3Com 2916-SFP User Guide

3Com 2916-SFP - Baseline Switch Plus Manual

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  • 3Com 2916-SFP | User Guide - Page 1
    3Com® Baseline Switch 2916-SFP Plus and Baseline Switch 2924-SFP Plus User Guide 3CBLSG16 / 3CBLSG24 www.3Com.com Part Number 10016143 Rev. AA Published May 2007
  • 3Com 2916-SFP | User Guide - Page 2
    3Com Corporation to provide notification of such revision or change. 3Com Corporation provides this documentation without warranty as are provided in 3Com's standard commercial license for the Software. Technical data is User Guide. Unless otherwise indicated, 3Com through X/Open Company, Ltd
  • 3Com 2916-SFP | User Guide - Page 3
    ABOUT THIS GUIDE User Guide Overview This guide provides information about the Web user interface for the 3Com® Baseline Switch 2916-SFP Plus and Baseline Switch 2924-SFP Plus. The Web interface is a network management system that allows you to configure, monitor, and troubleshoot your switch from
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    Management Protocol (SNMP) which provides a method for managing network devices. ■ Configuring Quality of Service - Provides information defining Quality of Service, including DSCP and CoS mapping, policies, and configuring Trust mode. ■ Managing System Files - Provides information for defining file
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    you to potential personal injury. Related Documentation In addition to this guide, other documentation available for the 3Com Baseline Switch 2916-SFP Plus/2924-SFP Plus include the following: ■ Safety and Support Information: Provides installation, set-up, and regulatory compliance information.
  • 3Com 2916-SFP | User Guide - Page 6
    CONTENTS ABOUT THIS GUIDE User Guide Overview 3 Intended Audience 5 Conventions 5 Related Documentation 5 1 GETTING STARTED About the Switch 2916 and 2924 12 Front Panel Detail 13 LED Status Indicators 14 System Specifications 15 Installing the Switch 16 Setting Up for Management 17
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    DEVICE SECURITY Configuring System Access 45 Defining RADIUS Clients 50 Defining Port-Based Authentication (802.1X 52 Defining Access Control Lists 57 Enabling 83 6 CONFIGURING PORTS Viewing Port Settings 85 Defining Port Settings 88 Viewing Port Details 90 7 AGGREGATING PORTS Viewing Link
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    105 Modifying Port VLAN Settings 107 Removing VLANs 108 9 CONFIGURING IP AND MAC ADDRESS INFORMATION Defining IP Addressing 109 Configuring Defining SNMP Traps 139 Removing SNMP Traps 140 13 CONFIGURING QUALITY OF SERVICE Viewing CoS Settings 143 Defining CoS 144 Viewing CoS to Queue 145
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    Configuring Port Mirroring 175 Viewing Cable Diagnostics 178 A 3COM NETWORK MANAGEMENT 3Com Network Supervisor 181 3Com Network Director 182 3Com Network Access Manager 182 3Com Enterprise Management Suite 183 Integration Kit with HP OpenView Network Node Manager 183 B DEVICE SPECIFICATIONS
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    GUIDE Getting Started with the Command Line Interface 195 CLI Commands 196 F GLOSSARY ...206 G OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS Register Your Product to Gain Service Benefits 212 Solve Problems Online 212 Purchase Extended Warranty and Professional Services 212 Access Software Downloads
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    GETTING STARTED This chapter contains introductory information about the 3Com® Baseline Switch 2916-SFP Plus and the Baseline Switch 2924-SFP Plus and how they can be used in your network. It covers summaries of hardware and software features and also the following topics: ■ About the Switch 2916
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    businesses and small enterprises seeking to build a secure converged network. The Switch 2916 and 2924 includes the following models: ■ Baseline Switch 2916-SFP Plus 16-Port ■ Baseline Switch 2924-SFP Plus 24-Port The Switch 2916 and 2924 feature the following advantages: ■ Full Gigabit speed access
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    Ports Supports fiber Gigabit Ethernet long-wave (LX), and fiber Gigabit Ethernet short-wave (SX) transceivers in any combination. Mounting 19-inch rack or standalone mounting Front Panel Detail Figure 1 shows the front panel of the Switch 2916-SFP Plus 16-Port unit. Figure 1 Switch 2916 SFP 16
  • 3Com 2916-SFP | User Guide - Page 14
    14 CHAPTER 1: GETTING STARTED LED Status Indicators The 2916-SFP Plus 16-Port and 24-Port Ethernet switches provide LED indicators on the front panel for your convenience to monitor the switch. Table 2 describes the meanings of the LEDs. Table 2 Description on the LEDs of the Switch 2916 and 2924
  • 3Com 2916-SFP | User Guide - Page 15
    Switch 2916 and 2924 series switches Specification Physical dimensions (H×W×D) Weight Console port Gigabit Ethernet ports on the front panel AC Input voltage Power consumption (full load) Operating temperature Relative humidity Switch 2916-SFP Plus 16-Port 3CBLSG16 Switch 2924-SFP Plus 24-Port
  • 3Com 2916-SFP | User Guide - Page 16
    16 CHAPTER 1: GETTING STARTED Installing the Switch This section contains information that you need to install and set up your 3Com switch. WARNING: Safety Information. Before you install or remove any components from the Switch or carry out any maintenance procedures, you must read the 3Com
  • 3Com 2916-SFP | User Guide - Page 17
    of Managing a Switch ■ Switch Setup Overview ■ Manually set the IP Address using the Console Port ■ Viewing IP Information using the Console Port ■ Setting Up Web Interface Management ■ Setting Up SNMP Management V1 or V2 ■ Default Users and Passwords Methods of Managing a Switch To manage your
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    when it is in its default state. The whole setup process is summarized in Figure 5. Detailed procedural steps are contained in the sections that follow. In brief, you need to: ■ Configure IP information manually for your switch or view the automatically configured IP information ■ Prepare for your
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    20 The switch uses its default IP information See page 20 Initial IP Information Setup Do you want to manually Yes configure the IP information? No How do you want to connect to the Switch? How do you want to view the automatically configured IP information? Connect to the console port and
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    20 CHAPTER 1: GETTING STARTED IP Configuration The switch's IP configuration is determined automatically using DHCP, or manually using values you assign. Automatic IP Configuration using DHCP By default the switch tries to configure its IP Information without requesting user intervention. It tries
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    Line Interface (CLI) You can access the switch through the Console port to manually set the IP address, or to view the IP address that was assigned automatically (for example, by a DHCP server). For more information about the CLI, refer to "3Com CLI Reference Guide" on page 195. Connecting to the
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    emulation software for more information. 3 Power up the switch. The Power on Self Test (POST) will be performed. The Switch 2916 and 2924 takes approximately one minute to boot. Manually set the IP Address using the Console Port You are now ready to manually set up the switch with IP information
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    Port" page 21. The automatic IP configuration process usually completes within one minute. 2 The command line interface login sequence begins as soon as the switch detects a connection to its console port. 3 At the login prompt, enter admin as your user name and press Return. 4 At the password
  • 3Com 2916-SFP | User Guide - Page 24
    a Switch" on page 17. For more information about the CLI, refer to "3Com CLI Reference Guide" on page 195. If you do not intend to use the command line interface using the console port to manage the switch, you can logout, disconnect the serial cable and close the terminal emulator software.
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    already set up the switch with IP information as described in "Methods of Managing a Switch" on page 17. ■ Ensure that the switch is connected to the a browser by default. You will only need to enable them if you have changed your browser settings. The switch's Web interface supports both secure (
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    26 CHAPTER 1: GETTING STARTED Web Management To manage a switch using the web interface over an IP network: Over the Network 1 Be sure that you know your switch's IP address. See "IP Configuration" on page 20, and "Viewing IP Information using the Console Port" on page 23. 2 Check that your
  • 3Com 2916-SFP | User Guide - Page 27
    in Table 5. Table 5 Default Users Default User Name Password admin (no password) Access Level Management - The user can access and change all manageable parameters Use the admin default user name (no password) to login and carry out initial switch setup. Upgrading Software using the CLI This
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    the local database. A unique password is required of each user. Two access levels exist on the 3Com Web Interface: ■ Management access level - Provides the user with read/write access. There is always one management level user configured for the switch. The factory default is be username: admin with
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    To access the 3Com user interface: 1 Open an Internet browser. 2 Enter the device IP address in the address bar and press Enter. The Enter Network Password Page opens: Figure 7 Enter Network Password Page 3 Enter your user name and password. The device default factory settings is configured
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    The 3Com Web Interface Home Page contains the following views: ■ Tab View - Provides the device summary configuration located at the top of the home page. ■ Tree View - Provides easy navigation through the configurable device features. The main branches expand to display the sub-features. ■ Port
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    3Com Web Interface 31 Figure 9 Web Interface Components The following table lists the user all the components under a specific feature. Provides access to user interface buttons, including both management buttons and task icons. ■ Using the Web Interface Management Buttons - Provides instructions
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    Device The 3Com Web Interface Home Page contains a graphical panel Representation representation of the device that appears within the Device View Tab. To access the Device Representation: 1 Click Device Summary > Device View. Figure 10 Device Representation 2 By selecting a specific port with your
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    Using Screen and Table Options 33 Using Screen and Table Options 3Com contains screens and tables for configuring devices. This section contains the view configuration information: 1 Click Port > Administration > Summary. The Port Settings Summary Page opens: Figure 11 Port Settings Summary Page
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    2: USING THE 3COM WEB INTERFACE Adding Configuration Information User-defined information can be added to specific 3Com Web Interface pages, by opening the IP Setup Page. For example, to configure IP Setup: 1 Click Administration > IP Setup. The IP Setup Page opens: Figure 12 IP Setup Page 2 Enter
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    Using Screen and Table Options 35 Modifying Configuration Information 1 Click Administration > System Access > Modify. The System Access Modify Page opens: Figure 13 System Access Modify Page 2 Modify the fields. 3 Click Apply. The access fields are modified.
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    36 CHAPTER 2: USING THE 3COM WEB INTERFACE Removing Configuration Information 1 Click Administration > System Access > Remove. The System Access Remove Page opens: Figure 14 System Access Remove Page 2 Select the user account to be deleted. 3 Click Remove. The user account is deleted, and the device
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    Configuration changes are only saved to the device once the user saves the changes to the flash memory. The Save Configuration save the device configuration: 1 Click Save Configuration. The Save Configuration Page opens: Figure 15 Save Configuration Page A message appears: The operation saves your
  • 3Com 2916-SFP | User Guide - Page 38
    > Reset. The Reset Page opens: Figure 16 Reset Page 2 Click Reboot. A confirmation message is displayed. 3 Click OK. The device is reset, and a prompt for a user name and password is displayed. Figure 17 User Name and Password Page 4 Enter a user name and password to reconnect to the web interface
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    The Reset Page opens: Figure 18 Reset Page The Reset Page contains the following fields: ■ Initialize with Current IP Address - Resets the device with the factory default settings, but maintains the current IP Address, subnet mask, and default gateway address. ■ Initialize with Default IP Address
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    40 CHAPTER 2: USING THE 3COM WEB INTERFACE Logging Off the Device To log off the device: 1 Click Logout. The Logout Page opens. 2 The following message appears: 3 Click OK. The 3Com Web Interface Home Page closes.
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    , and contact, the system MAC address, System Object ID, System Up Time, and software, boot, and hardware versions. To view the Device Summary Settings: 1 Click Device Summary. The Device Summary Page opens: Figure 19 Device Summary Page The Device Summary Page contains the following fields:
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    Name - Defines the user-defined device name. Displays the 3Com device 3C number software version number. ■ Boot Version - Displays the current boot version running on the device. ■ Hardware Version - Displays the current hardware version of the device. ■ Poll Now - Enables polling the ports for port
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    . Lower speed on 10/100/1000M port. Maximum speed 10/100/1000M RJ45 or RJ45 SFP. Indicates that a link was detected. SX/LX SFP. Indicates that a link was detected. Port has been set to inactive by User or Protocol. Port has been selected by user. Port or Transceiver has failed POST or Transceivers
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    4 MANAGING DEVICE SECURITY The Management Security section provides information for configuring system access, defining RADIUS authentication, port-based authentication and defining access control lists. This section includes the following topics: ■ Configuring System Access ■ Defining RADIUS
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    local database. A unique password is required of each user. Two access levels exist on the 3Com Web Interface: ■ Management access level - Provides the user with read/write access. There is always one management level user configured for the switch. The factory default is be user name: admin with no
  • 3Com 2916-SFP | User Guide - Page 46
    : 1 Click Administration > System Access > Summary. The System Access Summary Page opens: Figure 21 System Access Summary Page The System Access Summary Page contains the following fields: ■ User Name - Displays the user name. The possible predefined field value is: ■ Admin - Displays the predefined
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    Page allows network administrators to define Access users, passwords, and access levels for users using the System Access Interface. Monitor users have no access to this page. 1 Click Administration > System Access > Setup. The System Access Setup Page opens: Figure 22 System Access Setup Page The
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    Modify Page allows network administrators to modify Access users, passwords, and access levels using the System Access Interface. Monitor users have no access to this page. 1 Click Administration > System Access > Modify. The System Access Modify Page opens: Figure 23 System Access Modify Page The
  • 3Com 2916-SFP | User Guide - Page 49
    The System Access Remove Page opens: Figure 24 System Access Remove Page The System Access Remove Page contains the following fields: ■ Remove User(s) - Select user(s) from the list below to be removed. ■ User Name - Displays the user name. ■ Access Level - Displays the user access level. The lowest
  • 3Com 2916-SFP | User Guide - Page 50
    DEVICE SECURITY Defining RADIUS Clients Remote Authorization Dial-In User Service (RADIUS) servers provide additional security for networks. RADIUS servers provide a centralized authentication method for 802.1X. The default parameters are user-defined, and are applied to newly defined RADIUS
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    before retrying the query, or switching to the next server. Possible field values are 1-30. The default value is 3. ■ Dead Time - Defines the default amount of time (in minutes) that a RADIUS server is bypassed for service requests. The range is 0-2000. The default value is 0. ■ Key String - Defines
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    Port-Based Authentication (802.1X) Port-based authentication authenticates users on a per-port basis via an external server. Only authenticated and approved system users can transmit and receive data. Ports is authorized to access system services. Port-based authentication creates two access states
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    802.1X Summary Page opens: Figure 26 802.1X Summary Page The 802.1X Summary Page contains the following fields: ■ Port - Displays a list of interfaces. ■ User Name - Displays the supplicant user name. ■ Admin Port Control - Displays the admin port authorization state. ■ ForceUnauthorized - Indicates
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    . 2 Click Apply. Port Authentication is enabled, and the device is updated. Defining 802.1X The 802.1X Setup Page contains information for configuring 802.1X Authentication global settings on the device and defining specific 802.1X setting for each port individually. Monitor users have no access to
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    Click Security > 802.1X > Setup. The 802.1X Setup Page opens: Figure 27 802.1X Setup Page The 802.1X Setup Page contains the following fields: 802.1X Global Settings ■ Port Based Authentication State - Indicates if Port Authentication is enabled on the device. The possible field values are: ■ Enable
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    authentication services to the client through the interface. ■ Guest VLAN - Specifies whether the Guest VLAN is enabled on the port. The port. This is the default. ■ Periodic Reauthentication - Enables periodic reauthentication on the port. ■ Enable - Enables the periodic reauthentication on the port
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    actions and rules for specific ingress ports. Packets entering an ingress port, with an active ACL Port IP Address and Wildcard Mask - Filters the packets by the Source port IP address and wildcard mask. ■ Destination Port IP Address and Wildcard Mask - Filters the packets by the Source port IP
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    information regarding MAC ACLs Based ACLs configured on the device. Ports are reactivated from the Interface Configuration Page. To view MAC Based > ACL > MAC Based ACL > Summary. The MAC Based ACL Summary Page opens: Figure 28 MAC Based ACL Summary Page The MAC Based ACL Summary Page contains
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    ACL criteria, and disables the port to which the packet was addressed. Ports are reactivated from the Port Administration Setup Page. Configuring MAC Lists. Monitor users have no access to this page. 1 Click Device > ACL > MAC Based ACL > Setup. The MAC Based ACL Setup Page opens: Figure 29 MAC
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    used to classify network traffic. ■ Ethertype - Provides an identifier that differentiates between various types of protocols. ■ Action - Indicates the ACL forwarding action. In addition, the port can be shut down, a trap can be sent to the network administrator, or
  • 3Com 2916-SFP | User Guide - Page 61
    the ACL criteria, and disables the port to which the packet was addressed. Ports are reactivated from the Port Administration Setup Page. 2 Define the settings. Monitor users have no access to this page. 1 Click Device > ACL > MAC Based ACL > Modify. The MAC Based ACL Modify Page opens: Figure 30
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    network traffic. ■ Ethertype - Provides an identifier that differentiates between various types of protocols. ■ Action - Indicates the ACL forwarding action. The port can be shut down, a trap can be sent to the network administrator, or packet is assigned rate-limiting restrictions for forwarding
  • 3Com 2916-SFP | User Guide - Page 63
    disables the port to which the packet was addressed. Ports are reactivated from the Port Administration Setup user to remove MAC Based ACLs ACLs. Monitor users have no access to this page. To remove MAC Based ACLs: 1 Click Device > ACL > MAC Based ACL > Remove. The MAC Based ACL Remove Page opens
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    The possible field values are 1 to 4093. ■ CoS - Classifies Class of Service of the packet. ■ CoS Mask - Defines the wildcard bits to be applied to the ACL criteria, and disables the port to which the packet was addressed. Ports are reactivated from the Port Administration Setup Page. 2 Select the
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    Access Control Lists 65 Viewing IP Based The IP Based ACL Summary Page displays information regarding IP Based ACLs ACLs configured on the device. To view IP Based ACLs: 1 Click Device > ACL > IP Based ACL > Summary. The IP Based ACL Summary Page opens: Figure 32 IP Based ACL Summary Page The
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    IP Based ACLs Access Control Lists (ACL) allow network managers to define classification actions and rules for specific ingress ports. Your switch supports up to 256 ACLs. Packets entering an ingress port, with an active ACL, are either admitted or denied entry. If they are denied entry, the user
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    which ACE can be based. ■ Protocol ID - Adds user-defined protocols by which packets are matched to the ACE. Each protocol has a specific protocol number which is unique. The possible field range is 0-255. ■ Source Port - Indicates the source port that is used for matched packets. Enabled only when
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    packets. Enabled only when TCP or UDP are selected in the Protocol list. The field value is either user defined or Any. If Any is selected, the IP based ACL is applied to any destination port. ■ TCP Flags - If checked, enables configuration of TCP flags matched to the packet. The possible fields are
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    - If selected, enables matching the source port IP address to which packets are addressed to the ACE, according to a wildcard mask. The field value is either user defined or Any. If Any is selected, accepts any source IP address and disables wildcard mask filtering. ■ Wild Card Mask - Defines
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    ACL criteria, and disables the port to which the packet was addressed. Ports are reactivated from the Port Administration Setup Page. 2 Select an updated. Modifying IP Based ACLs The IP Based ACL Modify Page allows the network administrator to modify IP Based ACLs settings. Monitor users have no
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    Defining Access Control Lists 71 The IP Based ACL Modify Page contains the user-defined protocols by which packets are matched to the ACE. Each protocol has a specific protocol number which is unique. The possible field range is 0-255. ■ Source Port - Enables creating an ACL based on a specific
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    of 255.255.255.255 indicates that no bit is important. A mask of 0.0.0.0 indicates that all the bits are important. For example, if the source IP address is 149.36.184.198 and the wildcard mask is 255.255.255.00, the first three bytes of the
  • 3Com 2916-SFP | User Guide - Page 73
    reactivated from the Port Administration Setup Page. Removing IP Based The IP Based ACL Remove Page allows the user to remove IP Based ACLs. ACLs Monitor users have no access to this page. 1 Click Device > ACL > IP Based ACL > Remove. The IP Based ACL Remove Page opens: Figure 35 IP Based ACL Remove
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    value to the ACL. Either the DSCP value or the IP Precedence value is used to match packets to ACLs. ■ IP - Prec. - Indicates matching ip-precedence with the packet IP precedence value. ■ Action - Indicates the ACL forwarding action. In addition, the port can be shut down, a trap can be sent to the
  • 3Com 2916-SFP | User Guide - Page 75
    the ACL criteria, and disables the port to which the packet was addressed. Ports are reactivated from the Port Administration Setup Page. 2 Select an ACL user-defined ACLs mapped to the interfaces. To view ACL Binding: 1 Click Device > ACL > ACL Binding > Summary. The ACL Binding Summary Page opens
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    to bind Binding specific ports to MAC or IP Based ACLs. The monitor user has no access opens: Figure 37 ACL Binding Setup Page The ACL Binding Setup Page contains the following fields: ■ Select Port(s) - Indicates the ports to be configured. ■ Bind ACL - Assigns an Access Control List to a port
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    interface. Monitor users have no access to this page. To remove ACL Binding: 1 Click Device > ACL > ACL Binding > Remove. The ACL Binding Remove Page opens: Figure 38 ACL Binding Remove Page The ACL Binding Remove Page contains the following fields: ■ Interface - Displays the port interface to
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    separately on each port, and discards the frames when the rate exceeds a user-defined rate. Packet threshold is ignored if Broadcast Storm Control is Disabled. Monitor users have no access to this page. 1 Click Device > Broadcast Storm > Setup. The Broadcast Storm Setup Page opens: Figure 39
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    Multicast - Enables broadcast and multicast control on the selected port. ■ Packet Rate Threshold (3500-1,000,000) - Indicates the maximum rate (kilobits per second) at which unknown packets are forwarded. The range is 3,500-1,000,000. The default value is 3500. 2 Define the relevant fields. 3 Click
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    ■ Configuring System Time Viewing System Description The Device View Page displays parameters for configuring general device information, including the system name, MAC Address, software and hardware versions, and more. 1 Click Device Summary. The Device View Page opens. Figure 40 Device View Page
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    user-editable. ■ System Name - Displays the user the 3Com device software version number. ■ Boot Version - Displays the current boot version running on the device. ■ Hardware Version - Displays the current hardware version of the device. ■ Poll Now - This button immediately polls the switch ports
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    Name. The System Name Page opens: Figure 41 System Name Page The System Name Page includes the following fields: ■ System Name - Defines the user-defined device name. The changes will be lost when the switch is rebooted. To save the configuration, refer to "Saving the Configuration" on page 37.
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    users have limited permissions on this page. Country specific times need to be added manually. To configure the System Time: 1 Click Administration > System Time. The System Time Setup Page opens Daylight Saving Time (DST) on the switch. When checked, the DST setup parameters are displayed.
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    First Sunday of November ■ European - The device switches to DST at 1:00 am on the last Sunday standard. ■ Other - The DST definitions are user-defined and can be customized to your location. If amount of time adjusted for DST (in minutes). The default time is 60 minutes. ■ From - Indicates the non
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    mode to Auto = admin speed is = Admin Advertisement = 10/100/1000 full and half. ■ Setting the port speed to Auto and Duplex mode to Half = Admin Advertisement = 10+100+1000 half. ■ Setting the port speed to Auto and Duplex mode to Full = Auto Admin Advertisement = 10+100+1000 and Full. ■ Setting
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    6: CONFIGURING PORTS To view Port Settings: 1 Click Port > Administration > Summary. The Port Administration Summary Page opens: Figure 43 Port Administration Summary Page The Port Administration Summary Page contains the following fields: ■ Port - Indicates the selected port number. ■ Port Status
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    field is configurable only when auto negotiation is disabled, and the port speed is set to 10M or 100M or 1000M per second. This field cannot be configured on LAGs. The possible field values are: ■ Full - The interface supports transmission between the device and its link partner in both directions
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    network managers to configure port parameters for specific ports. Monitor users have no access to this page. To configure Port Settings: 1 Click Port > Administration > Setup. The Port Administration Setup Page opens: Figure 44 Port Administration Setup Page The Port Administration Setup Page
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    possible field values are: ■ Auto - Use to automatically configure the port. ■ Full - The interface supports transmission between the device and its link partner in both directions simultaneously. ■ Half - The interface supports transmission between the device and the client in only one direction at
  • 3Com 2916-SFP | User Guide - Page 90
    6: CONFIGURING PORTS Viewing Port Details The Port Detail Page displays current port parameters for specific ports. Monitor users have no access to this page. To view Port Details: 1 Click Port > Administration > Detail. The Port Detail Page opens: Figure 45 Port Detail Page The Port Detail Page
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    possible field values are: ■ Auto - Use to automatically configure the port. ■ Full - The interface supports transmission between the device and its link partner in both directions simultaneously. ■ Half - The interface supports transmission between the device and the client in only one direction at
  • 3Com 2916-SFP | User Guide - Page 92
    the same transceiver type. ■ The device supports up to eight LAGs, and eight ports in each LAG. ■ Ports added to a LAG lose their individual port configuration. When ports are removed from the LAG, the original port configuration is applied to the ports. This section contains the following topics
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    1 Click Ports > Link Aggregation > Summary. The Link Aggregation Summary Page opens: Figure 46 port usage by linking a group of ports together to form a single LAG. Aggregating ports multiplies the bandwidth between the devices, increases port flexibility, and provides link redundancy. Monitor users
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    94 CHAPTER 7: AGGREGATING PORTS 1 Click Ports > Link Aggregation > Create. The Link Aggregation Create Page opens: Figure 47 Link Aggregation Create Page The Link Aggregation Create Page includes the following fields: ■ Enter aggregation Group ID - Displays the group ID. The range
  • 3Com 2916-SFP | User Guide - Page 95
    multiplies the bandwidth between the devices, increases port flexibility, and provides link redundancy. Monitor users have no access to this page. To modify Link Aggregation: 1 Click Ports > Link Aggregation > Modify. The Link Aggregation Modify Page opens: Figure 48 Link Aggregation Modify Page
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    The Link Aggregation Remove Page allows the network manager to remove group IDs containing member ports. Monitor users have no access to this page. To remove Link Aggregation: 1 Click Ports > Link Aggregation > Remove. The Link Aggregation Remove Page opens: Figure 49 Link Aggregation Remove Page
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    can be set up manually or automatically established by enabling LACP on the relevant links. Aggregate ports can be linked into link-aggregation port-groups. The LACP Summary Page contains fields for viewing LACP LAGs. 1 Click Port > LACP > Summary. The LACP Summary Page opens: Figure 50 LACP Summary
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    can be set up manually or automatically established by enabling LACP on the relevant links. Aggregate ports can be linked into link-aggregation port-groups. The LACP Modify Page contains fields for modifying LACP LAGs. 1 Click Port > LACP > Summary. The LACP Modify Page opens: Figure 51 LACP Modify
  • 3Com 2916-SFP | User Guide - Page 99
    system priority value. The field range is 1-65535. The field default is 1 ■ Select Port - Displays the port number to which timeout and priority values are assigned. ■ LACP Port Priority - Displays the LACP priority value for the port. The field range is 1-65535. ■ LACP Timeout - Displays the
  • 3Com 2916-SFP | User Guide - Page 100
    more efficiently within subgroups. VLANs use software to reduce the amount of time it takes for network changes, additions, and moves to be implemented. VLANs restrict traffic within the VLAN. VLAN1 is the management VLAN. You can only manage the switch through a port that is an untagged member of
  • 3Com 2916-SFP | User Guide - Page 101
    VLAN tagging provides a method of transferring VLAN information between VLAN groups. VLAN1is the default VLAN. All ports are untagged members of VLAN1 by default. If any port becomes an untagged member of a different VLAN, then the port is removed from untagged membership of VLAN1. For example: If
  • 3Com 2916-SFP | User Guide - Page 102
    Detail Page provides information and global parameters on VLANS configured on the system. 1 Click Device > VLAN > VLAN Detail. The VLAN Detail Page opens: Figure 52 VLAN Detail Page The VLAN Detail Page contains the following information: ■ Select a VLAN to display - Selects a VLAN to be display
  • 3Com 2916-SFP | User Guide - Page 103
    Details 103 Viewing VLAN Port Details The VLAN Port Detail Page provides displays VLAN configured ports. To view VLAN Port details: 1 Click Device > VLAN > Port Detail. The VLAN Port Detail Page opens: Figure 53 VLAN Port Detail Page The VLAN Port Detail Page contains the following information
  • 3Com 2916-SFP | User Guide - Page 104
    VLANS Creating VLANs The VLAN Setup Page allows the network administrator to create user-defined VLANs. The monitor users have no access to this page. To create VLANs: 1 Click Device > VLAN > Setup. The VLAN Setup Page opens: Figure 54 VLAN Setup Page The VLAN Setup Page contains the following
  • 3Com 2916-SFP | User Guide - Page 105
    Page allows the network manager to rename VLANs and change VLAN membership. The monitor users have no access to this page. To edit VLAN Settings: 1 Click Device > VLAN > Modify VLAN. The Modify VLAN Page opens: Figure 55 Modify VLAN Page The Modify VLAN Page contains the following fields: ■ Select
  • 3Com 2916-SFP | User Guide - Page 106
    . ■ Not Available for Selection - Indicates the interface is not available for selection. ■ Select All - Allows the user to select all ports to be added to the VLAN. ■ Select None - Removes the ports selected. To rename VLANs: 1 Select a VLAN from the list to be renamed. 2 Click Rename. The VLANs
  • 3Com 2916-SFP | User Guide - Page 107
    network manager to modify port VLAN settings. The monitor users have no access to this page. 1 Click Device > VLAN > Modify Port. The Modify VLAN Port Page opens: Figure 56 Modify VLAN Port Page The Modify VLAN Port Page contains the following fields: ■ Select a Port - Selects a port to be modified
  • 3Com 2916-SFP | User Guide - Page 108
    be assigned to the port. 5 Click Apply. The VLANs are configured, and the device is updated. Removing VLANs The VLAN Remove Page allows the network administrator to remove VLANs. The monitor users have no access to this page. 1 Click Device > VLAN > Remove. The VLAN Remove Page opens: Figure 57
  • 3Com 2916-SFP | User Guide - Page 109
    assigning an IP address. The default gateway is erased when the Default IP address is modified. Packets are forwarded to the default gateway when sent to a remote network. The monitor user has no access to this page. 1 Click Administration > IP Setup. The IP Setup Page opens: Figure 58 IP Setup Page
  • 3Com 2916-SFP | User Guide - Page 110
    by the user. ■ DHCP - Indicates that the IP Interface is dynamically created. ■ IP Address - Displays the currently configured IP address. ■ Subnet Mask - Displays the currently configured subnet mask. ■ Default Gateway - Displays the currently configured default gateway. 2 Select Manual or DHCP
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    Administration > ARP Settings > Summary. The ARP Settings Summary Page opens: Figure 59 ARP Settings Summary Page The ARP Settings Summary Page the station MAC address, which is associated in the ARP table with the IP address. ■ Status - Displays the ARP table entry type. Possible field values
  • 3Com 2916-SFP | User Guide - Page 112
    specific interfaces. The monitor users have no access to this page. To configure ARP entries: 1 Click Administration > ARP Settings > Setup. The ARP Settings Setup Page opens associated in the ARP table with the IP address. ■ ARP Entry Age Out 40000000. The default value is 300 seconds. 2 Define the
  • 3Com 2916-SFP | User Guide - Page 113
    user has no access to this page. To remove ARP entries: 1 Click Administration > IP Addressing > ARP Settings > Remove. The ARP Settings Remove Page opens ■ Static - Clears only static ARP entries. ■ Remove - Removes a specific ARP entry. The possible field values are: ■ Checked - Removes the
  • 3Com 2916-SFP | User Guide - Page 114
    Displays the station MAC address, which is associated in the ARP table with the IP address. ■ Status - Displays the ARP table entry type. Possible field values is not associated with any port, are flooded to all ports of the relevant VLAN. Static addresses are manually configured. In order to
  • 3Com 2916-SFP | User Guide - Page 115
    Monitoring > Address Tables > Summary. The Address Table Summary Page opens: Figure 62 Address Table Summary Page The Address Table Summary Page the MAC Addresses that were entered by a user. ■ Dynamic - Displays the MAC Addresses that were detected by the switch. ■ MAC Address - Displays the current
  • 3Com 2916-SFP | User Guide - Page 116
    is detected. The default value is 300 seconds. Viewing Port The Port Summary Page allows the user to view the MAC addresses Summary Settings assigned to specific ports. 1 Click Monitoring > Address Tables > Port Summary. The Port Summary Page opens: Figure 63 Port Summary Page The Port Summary Page
  • 3Com 2916-SFP | User Guide - Page 117
    timed out if no traffic from the source is detected. The default value is 300 seconds. Adding Entries into The Address Table Add Page allows the network manager to assign MAC Address Tables addresses to ports with VLANs. The monitor users have no access to this page. To add Address Tables: 1 Click
  • 3Com 2916-SFP | User Guide - Page 118
    118 CHAPTER 9: CONFIGURING IP AND MAC ADDRESS INFORMATION The Address Table Add Page contains the following fields: ■ VLAN ID - Assigns a VLAN ID to the user-defined MAC Address. ■ MAC Address - Defines a MAC Address to be assigned to the specific port and VLAN ID. ■ No Aging - Indicates that the
  • 3Com 2916-SFP | User Guide - Page 119
    out if no traffic from the source is detected. The default value is 300 seconds. The monitor users have no access to this page. To define the Aging Time: 1 Click Monitoring > Address Tables > Setup. The Address Table Setup Page opens:
  • 3Com 2916-SFP | User Guide - Page 120
    IP AND MAC ADDRESS INFORMATION Removing Address The Port Remove Page allows the network manager to remove ports from Table Ports the address tables. The monitor users have no access to this page. To remove ports: 1 Click Monitoring > Address Tables > Port Remove. The Port Remove Page opens
  • 3Com 2916-SFP | User Guide - Page 121
    the source is detected. The default value is 300 seconds. 2 Select the port(s) to remove. 3 Click Remove. The selected ports are removed from the MAC address users have no access to this page. To remove Address Tables: 1 Click Monitoring > Address Table > Remove. The Address Table Remove Page opens
  • 3Com 2916-SFP | User Guide - Page 122
    the MAC address is dynamically configured. ■ Port Index - Indicates Port Table entry number. ■ Aging Time - Specifies the amount of time the MAC Address remains in the Dynamic MAC Address before it is timed out if no traffic from the source is detected. The default value is 300 seconds. 2 Select the
  • 3Com 2916-SFP | User Guide - Page 123
    Multicast routers generating IGMP queries. ■ Which routing protocols are forwarding packets and Multicast traffic. Ports requesting to join a specific Multicast group issue an IGMP report, specifying that Multicast group is accepting members. This results in the creation of the Multicast filtering
  • 3Com 2916-SFP | User Guide - Page 124
    IGMP Snooping parameters. The monitor users have read-only access to this page. 1 Click Device > IGMP Snooping > Setup. The IGMP Snooping Setup Page opens: Figure 68 IGMP Snooping Disable - Disables IGMP Snooping on the VLAN. This is the default value. ■ Enable - Enables IGMP Snooping on the VLAN.
  • 3Com 2916-SFP | User Guide - Page 125
    Defining IGMP Snooping 125 2 Select Enable IGMP Snooping. 3 Define the fields. 4 Click Apply. IGMP Snooping is enabled, and the device is updated.
  • 3Com 2916-SFP | User Guide - Page 126
    Spanning Tree Protocol (RSTP) detects and uses network topologies that allow a faster STP convergence without creating forwarding loops. The device supports the following STP versions: ■ Classic STP - Provides a single path between end stations, avoiding and eliminating loops. ■ Rapid STP - Detects
  • 3Com 2916-SFP | User Guide - Page 127
    view Spanning Tree Summary: 1 Click Device > Spanning Tree > Summary. The Spanning Tree Summary Page opens: Figure 69 Spanning Tree Summary Page The Spanning Tree Summary Page contains the following fields: ■ Port - The interface for which the information is displayed. ■ STP - Indicates if STP is
  • 3Com 2916-SFP | User Guide - Page 128
    is attached to the LAN. ■ Alternate - Provides an alternate path to the root switch from the root interface. ■ Backup - Provides a backup path to the designated port path toward the Spanning Tree leaves. Backup ports occur only when two ports are connected in a loop by a Point-to-Point link, or when
  • 3Com 2916-SFP | User Guide - Page 129
    priority value influences the port choice when a bridge has two ports connected in a loop. The priority range is between 0 -240. The priority value is determined in increments of 16. ■ RSTP Link Type - Indicates whether a Point-to-Point link is established, or if the device is permitted to establish
  • 3Com 2916-SFP | User Guide - Page 130
    Network administrators can assign STP settings to specific interfaces using the Spanning Tree Setup Page. The monitor user has no access to this page. To configure Spanning Tree Setup: 1 Click Device > Spanning Tree > Setup. The Spanning Tree Setup Page opens
  • 3Com 2916-SFP | User Guide - Page 131
    1 through 200,000,000 range for port path cost. The default path cost assigned to an interface varies according to the selected method (Hello Time, Max Age, or Forward Delay). Bridge Setting ■ Priority - Specifies the bridge priority value. When switches or bridges are running STP, each is
  • 3Com 2916-SFP | User Guide - Page 132
    - Indicates the port number that offers the lowest cost path from this bridge to the Root Bridge. This field is significant when the bridge is not the Root Bridge. The default is zero. ■ Root Path Cost - Specifies the cost of the path from this bridge to the Root Bridge. ■ Topology Changes Counts
  • 3Com 2916-SFP | User Guide - Page 133
    : 1 Click Device > Spanning Tree > Modify. The Spanning Tree Modify Page opens: Figure 71 Spanning Tree Modify Page The Spanning Tree Modify Page contains the following fields: ■ STP - Indicates if STP is enabled on the port. The possible field values are: ■ Enable - Indicates that STP is enabled
  • 3Com 2916-SFP | User Guide - Page 134
    - Restricts the interface from acting as the root port of the switch. The possible field values are: ■ Enable - Indicates Root Guard is enabled on the port ■ Disable - Indicates Root Guard is disabled on the port. ■ Default Path Cost - Indicates if Default Path Cost is enabled. The possible field
  • 3Com 2916-SFP | User Guide - Page 135
    device supports the following SNMP versions: ■ SNMP version 1 ■ SNMP version 2c SNMP v1 and v2c The SNMP agents maintain a list of variables, which are used to manage the device. The variables are defined in the Management Information Base (MIB). The SNMP agent defines the MIB specification format
  • 3Com 2916-SFP | User Guide - Page 136
    SNMP communities are defined only for SNMP v1 and SNMP v2c. Monitor users have no access to this page. To define SNMP communities: 1 Administration > SNMP > Communities > Setup. The SNMP Communities Setup Page opens: Figure 72 SNMP Communities Setup Page The SNMP Communities Setup Page contains
  • 3Com 2916-SFP | User Guide - Page 137
    Station - Displays the management station IP address for which the SNMP community is defined. ■ Open Access (0.0.0.0) - Provides SNMP Private - Displays the pre-defined private community string name. ■ User Defined - Defines a user-defined community string name. ■ Access Mode - Defines the access
  • 3Com 2916-SFP | User Guide - Page 138
    Administration > SNMP > Communities > Remove. The SNMP Communities Remove Page opens: Figure 73 SNMP Communities Remove Page The SNMP Communities Remove Page the management station IP address for which the SNMP community is defined. ■ Community String - Displays the user-defined text string
  • 3Com 2916-SFP | User Guide - Page 139
    Defining SNMP Traps The SNMP Traps Setup Page contains information for defining filters that determine whether traps are sent to specific users, and the trap type sent. Monitor users have no access to this page. To define SNMP traps: 1 Click Administration > SNMP > Traps. The SNMP Traps Setup Page
  • 3Com 2916-SFP | User Guide - Page 140
    SNMP Traps Setup Page contains the following fields: ■ Recipients IP Address - Defines the IP address to which the traps are sent. ■ Community String Remove Page allows the network manager to remove SNMP Traps. Monitor users have no access to this page. To remove SNMP traps: 1 Click Administration >
  • 3Com 2916-SFP | User Guide - Page 141
    field values are: ■ Checked - Removes the selected recipient from the list of recipients. ■ Unchecked - Maintains the list of recipients. ■ Recipients IP - Defines the IP address to which the traps are sent. ■ Trap - Displays the trap type. The possible field values are: ■ SNMP V1 - Indicates that
  • 3Com 2916-SFP | User Guide - Page 142
    QUALITY OF SERVICE Quality of Service (QoS fields are matched to specific values. All packets matching the user-defined specifications are classified together. user-definable. Packets arriving untagged are assigned a default VPT value, which is set on a per-port basis. The assigned VPT is used to map
  • 3Com 2916-SFP | User Guide - Page 143
    Viewing CoS Settings 143 Viewing CoS Settings The CoS Summary Page displays CoS default settings assigned to ports. To view CoS Settings: 1 Click Device > QoS > CoS > Summary. The CoS Summary Page opens: Figure 76 CoS Summary Page The CoS Summary Page contains the following fields: ■ Interface -
  • 3Com 2916-SFP | User Guide - Page 144
    Select Port(s) - Indicates the ports to be configured. ■ Set Default - Sets the default user priority. The possible field values are 0-7. The default CoS value is 0. With the default settings, 0 is the lowest and 7 is the highest priority. ■ Restore Default - Restores the device factory defaults for
  • 3Com 2916-SFP | User Guide - Page 145
    the following fields: ■ Class of Service - Specifies the CoS priority tag values mapped. Four traffic priority queues are supported. The CoS to Queue Setup Page contains fields for mapping CoS values to traffic queues. Four traffic priority queues are supported user has no access to this page.
  • 3Com 2916-SFP | User Guide - Page 146
    79 CoS to Queue Setup Page The CoS to Queue Setup Page contains the following fields: ■ Restore Defaults - Restores the device factory defaults for mapping CoS values to a forwarding queue. ■ Class of Service - Specifies the CoS priority tag values, where zero is the lowest and 7 is the highest
  • 3Com 2916-SFP | User Guide - Page 147
    to Queue The DSCP to Queue Summary Page contains fields for mapping DSCP settings to traffic queues. For example, a packet with Device > QoS > DSCP to Queue > Summary. The DSCP to Queue Summary Page opens: Figure 80 DSCP to Queue Summary Page The DSCP to Queue Summary Page contains the following
  • 3Com 2916-SFP | User Guide - Page 148
    monitor user has no access to this page. To map CoS to Queues: 1 Click Device > QoS > DSCP to Queue > Setup. The DSCP to Queue Setup Page opens: Figure 81 DSCP to Queue Setup Page The DSCP to Queue Setup Page contains the following fields: ■ Restore Defaults - Restores the device factory defaults
  • 3Com 2916-SFP | User Guide - Page 149
    configured interfaces. The original device QoS default settings can be reassigned to the QoS > Trust Setup. The Trust Setup Page opens: Figure 82 Trust Setup Page The Trust Setup Page mapped according to the relevant trust modes table. Traffic not containing a predefined packet field is mapped
  • 3Com 2916-SFP | User Guide - Page 150
    : 1 Click Device > QoS > Bandwidth > Summary. The Bandwidth Summary Page opens: Figure 83 Bandwidth Summary Page The Bandwidth Summary Page contains the following fields: on the interface. ■ Rate Limit - Indicates the traffic limit for the port. The field range is 3,500-1,000,000 kbps per second.
  • 3Com 2916-SFP | User Guide - Page 151
    CbS as the interface shaping type. The possible field range is 4096-16,769,020 bytes per second. Defining Bandwidth Settings The Bandwidth Setup Page shaping type is selected in the Bandwidth Setup Page. The monitor user has no access to this page. To configure Bandwidth Settings: 1 Click
  • 3Com 2916-SFP | User Guide - Page 152
    Burst Size (CbS) - Defines CbS as the interface shaping type. The possible field value is 4096-16,769,020 bytes per second. ■ Select ports - Indicates the ports to be configured. 2 Select the ports to be configured. 3 Define the fields. 4 Click Apply. The bandwidth is defined, and the device is
  • 3Com 2916-SFP | User Guide - Page 153
    service by configuring ports to carry IP voice traffic from IP phones on a specific IP traffic is received unevenly. The system supports one Voice VLAN. There are two operational modes for IP Phones: ■ IP the initial IP address through DHCP. The phone eventually use the Voice VLAN and start sending
  • 3Com 2916-SFP | User Guide - Page 154
    Time - Indicates the amount of time after the last IP phone's OUI is aged out for a specific port. The port will age out after the bridge and voice aging time. The default time is one day. The field format is Day, Hour, Minute. The aging time starts after the MAC Address is aged out from the
  • 3Com 2916-SFP | User Guide - Page 155
    ports that were manually added to the Voice VLAN. Defining Voice VLAN The Voice VLAN Setup Page provides information for enabling and defining Voice VLAN globally on the device. To configure Voice VLAN Settings: 1 Click Device > QoS > VoIP > Traffic Setting > Setup. The Voice VLAN Setup Page opens
  • 3Com 2916-SFP | User Guide - Page 156
    QUALITY OF SERVICE ■ Voice VLAN Aging Time - Indicates the amount of time after the last IP phone's OUI is aged out for a specific port. The port will age out after the bridge and voice aging time. The default time is one day. The field format is Day, Hour, Minute. The aging time starts after the
  • 3Com 2916-SFP | User Guide - Page 157
    the MAC Address of the IP phones OUI was added manually to a port/LAG in the Voice VLAN, the user cannot add it to the Voice VLAN in Auto mode, only in Manual mode. ■ Voice VLAN Port Security - Indicates if port security is enabled on the Voice VLAN. Port Security ensures that packets arriving with
  • 3Com 2916-SFP | User Guide - Page 158
    . This is the default value. ■ None - Indicates that the selected port will not be added to a Voice VLAN. ■ Manual - Adding a selected port to a Voice VLAN. ■ Auto - Indicates that if traffic with an IP Phone MAC Address is transmitted on the port, the port joins the Voice VLAN. The port is aged out
  • 3Com 2916-SFP | User Guide - Page 159
    While the last three bytes contain a unique station ID. Using the OUI, network managers can add specific manufacturer's MAC addresses to the OUI table. Once the OUIs are added, all traffic received on the Voice VLAN ports from the specific IP phone with a listed OUI, is forwarded on the voice VLAN.
  • 3Com 2916-SFP | User Guide - Page 160
    OUI Summary Page opens: Figure 89 Voice VLAN OUI Summary Page The Voice VLAN OUI Summary Page contains the following fields: OUI List ■ Telephony OUI(s) - Lists the OUIs currently enabled on the Voice VLAN. The following OUIs are enabled by default. ■ 00:E0:BB - Assigned to 3Com IP Phones. ■ 00:03
  • 3Com 2916-SFP | User Guide - Page 161
    are added, all traffic received on the Voice VLAN ports from the specific IP phone with a listed OUI, is forwarded on the voice VLAN. To modify OUI Settings: 1 Click Device > QoS > VoIP Traffic Setting > OUI Modify. The Voice VLAN OUI Modify Page opens: Figure 90 Voice VLAN OUI Modify Page The
  • 3Com 2916-SFP | User Guide - Page 162
    up switch firmware, including the following topics: ■ Backing Up System Files ■ Restoring Files ■ Upgrade the Firmware Image file to the Startup Configuration file. ■ Image files - Software upgrades are used when a new version file is downloaded. The file is checked for the right format, and
  • 3Com 2916-SFP | User Guide - Page 163
    to a TFTP or HTTP server. The monitor users have no access to this page. 1 To keep Backup & Restore > Backup. The Backup Page opens: Figure 91 Backup Page The Backup Page contains the HTTPS server. ■ TFTP Server IP Address - Specifies the TFTP Server IP Address to which the configuration files
  • 3Com 2916-SFP | User Guide - Page 164
    opens: Figure 92 Restore Page The Restore Page contains the following fields: ■ Download via TFTP - Enables a download from the TFTP server. ■ Download via HTTP - Enables a download from the HTTP server or HTTPS server. Configuration Download ■ TFTP Server IP Address - Specifies the TFTP Server IP
  • 3Com 2916-SFP | User Guide - Page 165
    the Command Line Interface (CLI). See "Upgrading Software using the CLI" page 27. ■ The monitor user has no access to this page. To download the software image: 1 Click Administration > Firmware Upgrade > Restore Image. The Restore Image Page opens: Figure 93 Restore Image Page The Restore Image
  • 3Com 2916-SFP | User Guide - Page 166
    managers to select and reset the Image files. The Device Boot is downloaded onto the device through the CLI. To upload System files: 1 Click Administration > Firmware Upgrade > Active Image. The Active Image Page opens: Figure 94 Active Image Page The Active Image Page contains the following
  • 3Com 2916-SFP | User Guide - Page 167
    system is functioning properly, but a system notice has occurred. 6 Provides device information. 7 Provides detailed information about the log. If a Debug error occurs, contact Customer Tech Support. This section includes the following topics: ■ Viewing Logs ■ Configuring Logging
  • 3Com 2916-SFP | User Guide - Page 168
    logs in a chronological order that are saved in RAM (Cache). The monitor user has read-only access to this feature. To view Logging: 1 Click Administration > Logging > Display. The Logging Display Page opens: Figure 95 Logging Display Page The Logging Display Page contains the following fields and
  • 3Com 2916-SFP | User Guide - Page 169
    are listed from the highest severity to the lowest severity level. The monitor users have no access to this page. To define Log Parameters: 1 Click Administration > Logging > Setup. The Logging Setup Page opens: Figure 96 Logging Setup Page The Logging Setup Page contains the following fields
  • 3Com 2916-SFP | User Guide - Page 170
    functional. ■ Error - A device error has occurred, for example, if a single port is offline. ■ Warning - The lowest level of a device warning. The device is functioning, but an operational problem has occurred. ■ Notice - Provides device information. ■ Info - Provides device information. ■ Debug
  • 3Com 2916-SFP | User Guide - Page 171
    , but an operational problem has occurred. ■ Note - Provides device information. ■ Informational - Provides device information. ■ Debug - Provides debugging messages. ■ Syslog IP Address - Defines IP Address to upload syslog messages. ■ Syslog Port - Defines the UDP Port through which syslog
  • 3Com 2916-SFP | User Guide - Page 172
    device. To view RMON statistics: 1 Click Ports > Statistics > Summary. The Port Statistics Summary Page opens: Figure 97 Port Statistics Summary Page The Port Statistics Summary Page contains the following fields: ■ Select Port (s) - Defines the specific port for which RMON statistics are displayed
  • 3Com 2916-SFP | User Guide - Page 173
    are refreshed. The possible field values are: ■ No Refresh - Indicates that the port statistics are not refreshed. ■ 15 Sec - Indicates that the port statistics are refreshed every 15 seconds. ■ 30 Sec - Indicates that the port statistics are refreshed every 30 seconds. ■ 60 Sec - Indicates that the
  • 3Com 2916-SFP | User Guide - Page 174
    174 CHAPTER 16: VIEWING STATISTICS octet (Alignment Error) number. The field range to on the interface since the device was last refreshed. 2 Select a port. The port statistics are displayed. 3 Click Clear All Counters. The port statistics counters are cleared and the new statistics are displayed.
  • 3Com 2916-SFP | User Guide - Page 175
    as well as a debugging feature. Port mirroring also enables switch performance monitoring. Network administrators can configure port mirroring by selecting a specific port from which to copy all packets, and other ports to which the packets copied. The monitor user has limited access to this page
  • 3Com 2916-SFP | User Guide - Page 176
    > Setup. The Port Mirroring Setup Page opens: Figure 98 Port Mirroring Setup Page The Port Mirroring Setup Page contains the following fields: ■ Select Port Type - Defines the port that will be the monitor port (destination port) and the port that will be mirrored (source port). The possible values
  • 3Com 2916-SFP | User Guide - Page 177
    is updated. Removing Port The Port Mirroring Remove Page permits the network manager to Mirroring terminate port mirroring or monitoring. The monitor users have no access to this page. 1 Click Monitoring > Port Mirroring > Remove. The Port Mirroring Remove Page opens: Figure 99 Port Mirroring Remove
  • 3Com 2916-SFP | User Guide - Page 178
    port. ■ Mirror In - Displays ports that are monitored on the RX. ■ Mirror Out - Displays ports that are monitored on the TX. 2 Select the ports to be removed. 3 Click Remove. Port and characteristics of a copper cable attached to a port. The monitor users have limited access to this page. To view
  • 3Com 2916-SFP | User Guide - Page 179
    . When performing cable tests consider the following: ■ During the tests, ports are in the down state. ■ The minimum cable length resolution is one meter, so if the cable is shorter than 1 meter the test will display "no cable". ■ An open cable or a 2-pair copper cable will display a cable fault
  • 3Com 2916-SFP | User Guide - Page 180
    To test cables: 1 Click Monitoring > Cable Diagnostics > Diagnostics. The Diagnostics Page opens: Figure 101 Diagnostics Page The Diagnostics Page contains the following fields: ■ Select a Port - Specifies the port to be tested. ■ Test Result - Displays the cable test results. Possible values
  • 3Com 2916-SFP | User Guide - Page 181
    intelligent defaults and the ability to detect network misconfigurations. It can also offer optimization suggestions, making this application ideal for network managers with all levels of experience. To find out more about 3Com Network Supervisor and to download a trial version, go to: www.3com.com
  • 3Com 2916-SFP | User Guide - Page 182
    and administrative tasks on midsized networks. By using 3ND you can discover, map, and monitor all your 3Com devices on the network. It simplifies tasks such as backup and restore for 3Com device configurations as well as firmware and agent upgrades. 3ND makes it easy to roll out network-wide
  • 3Com 2916-SFP | User Guide - Page 183
    , security switches, the 3Com VCX™ IP Telephony server, and wireless access points: ■ Up to 250 devices ■ Up to 1,000 devices ■ Up to 5,000 devices ■ An unlimited number of devices To find out more about 3Com Enterprise Management Suite, go to: www.3com.com/ems Integration Kit with HP OpenView
  • 3Com 2916-SFP | User Guide - Page 184
    B DEVICE SPECIFICATIONS AND FEATURES Related Standards The 3Com® Baseline Switch 2916-SFP Plus and Baseline Switch 2924-SFP Plus have been designed to the following standards: Function 8802-3, IEEE 802.3 (Ethernet), IEEE 802.3u (Fast Ethernet), IEEE 802.3ab (Gigabit Ethernet), IEEE 802.1D (
  • 3Com 2916-SFP | User Guide - Page 185
    Switch Features This section describes the device features. The system supports the following features: Table 11 Features of the Baseline Switch 2916-SFP Plus and Switch 2924-SFP Plus ■ Configure each port for the highest-level operational mode that both ports can support MAC addresses from
  • 3Com 2916-SFP | User Guide - Page 186
    186 APPENDIX B: DEVICE SPECIFICATIONS AND FEATURES Table 11 Features of the Baseline Switch 2916-SFP Plus and Switch 2924-SFP Plus (continued) Feature Address Resolution Protocol (ARP) Class Of Service (CoS) Command Line Interface Configuration File Management DHCP Clients Fast Link Full 802.1Q
  • 3Com 2916-SFP | User Guide - Page 187
    187 Table 11 Features of the Baseline Switch 2916-SFP Plus and Switch 2924-SFP Plus (continued) Feature MAC Address Capacity Support MAC Multicast Support MDI/MDIX Support Password Management Port-based Authentication Port-based Virtual LANs Port Mirroring RADIUS Clients Rapid Spanning Tree
  • 3Com 2916-SFP | User Guide - Page 188
    SPECIFICATIONS AND FEATURES Table 11 Features of the Baseline Switch 2916-SFP Plus and Switch 2924-SFP Plus (continued) Feature SNMP Alarms and Trap Logs SNMP Versions 1 and 2 Spanning Tree Protocol SSL Static MAC Entries TCP TFTP Trivial File Transfer Protocol Virtual Cable Testing VLAN Support
  • 3Com 2916-SFP | User Guide - Page 189
    RJ45-to-DB9 cable. One end of the cable has an RJ-45 plug for connecting to the switch's Console port, and the other end has a DB-9 socket connector for connecting to the serial port on the terminal, as shown in Figure 102. Figure 102 Console cable Table 12 Console cable pinouts RJ
  • 3Com 2916-SFP | User Guide - Page 190
    required for handshake 8 CTS Modem Cable RJ-45 to RS-232 25-pin Switch 5500 Cable connector: RJ-45 female Screen Shell TxD 3 RxD 2 RTS 7 CTS 8 DSR 6 Ground 5 DCD 1 DTR 4 RS-232 Modem Port Cable connector: 25-pin male 1 Screen 2 TxD 3 RxD 4 RTS 5 CTS 6 DSR 7 Ground
  • 3Com 2916-SFP | User Guide - Page 191
    RJ-45 Pin Assignments 10/100 and 1000BASE-T RJ-45 connections. Table 10 Pin assignments Pin Number 10/100 Ports configured as MDI 1 Transmit Data + 2 Transmit Data − 3 Receive Data + 4 Not assigned 5 Not assigned 6 Receive Data − 7 Not assigned 8 Not assigned 1000 Bidirectional
  • 3Com 2916-SFP | User Guide - Page 192
    . Solutions are found either in this chapter, or through customer support. If no solution is found in this chapter, contact Customer Support. Listed below are some possible troubleshooting problems and solutions. These error messages include: ■ Switch does not run; power LED is off. ■ Cannot connect
  • 3Com 2916-SFP | User Guide - Page 193
    management using HTTP, SNMP, etc. Be sure the switch has a valid IP address, subnet mask and default gateway configured Check that your cable is properly connected with a valid link light, and that the port has not been disabled Ensure that your management station is plugged into the appropriate
  • 3Com 2916-SFP | User Guide - Page 194
    12 Troubleshooting Solutions (continued) Problems Possible Cause Device is in a reboot loop Software fault No connection and the port Incorrect ethernet cable, LED is off e.g., crossed rather than straight cable, or vice versa, split pair (incorrect twisting of pairs) Solution Download and
  • 3Com 2916-SFP | User Guide - Page 195
    E 3COM CLI REFERENCE GUIDE This section describes using the Command Line Interface (CLI) to manage the device. The device is managed through the CLI from a direct connection to the device console port Getting Started with the Command Line Interface Using the CLI, network managers enter
  • 3Com 2916-SFP | User Guide - Page 196
    APPENDIX E: 3COM CLI REFERENCE GUIDE 3 Press Enter. The Password prompt displays: Password: The Login information is verified, and displays the following CLI menu: Select menu option# If the password is invalid, the following message appears and Login process restarts. Incorrect Password Automatic
  • 3Com 2916-SFP | User Guide - Page 197
    Select menu option#? initialize Reset the device to factory default and reboot. ipsetup Configures IP address logout Logout from this session. ping Send echo messages reboot Power cycles the device. summary Summarizes IP setup and software versions. upgrade Software upgrade over TFTP.
  • 3Com 2916-SFP | User Guide - Page 198
    ■ hostname - hostname to ping. (Range: 1 - 158 characters) Default Configuration This command has no default configuration. User Guidelines There are no user guidelines for this command. Example The following displays current IP configuration and software versions running on the device: Select menu
  • 3Com 2916-SFP | User Guide - Page 199
    This command has no default configuration. User Guidelines There are no user guidelines for this command. Example The following displays current IP configuration and software versions running on the device: Select menu option: Summary IP Method: Manual IP address: 1.2.3.4 Subnet mask: 255
  • 3Com 2916-SFP | User Guide - Page 200
    200 APPENDIX E: 3COM CLI REFERENCE GUIDE ipSetup The ipSetup command allows the user to define an IP address on the device either manually or via a DHCP server. Syntax ipSetup [dhcp| ip-address mask [default-gateway ip-address]] Parameters ■ dhcp - Specifies the IP address is acquired automatically
  • 3Com 2916-SFP | User Guide - Page 201
    Type - Defines the file type to be downloaded. The possible values are: ■runtime - Downloads the runtime software application file. ■bootcode - Downloads the bootcode software file. Default Configuration This command has no default configuration. User Guidelines During the upgrade process, a series
  • 3Com 2916-SFP | User Guide - Page 202
    202 APPENDIX E: 3COM CLI REFERENCE GUIDE Initialize The Initialize command resets the device configuration to factory defaults, including the IP configuration. Syntax Initialize Default Configuration This command has no default configuration. User Guidelines The system prompts for confirmation of
  • 3Com 2916-SFP | User Guide - Page 203
    CLI Commands 203 Reboot The Reboot command simulates a power cycle of the device. Syntax reboot Default Configuration This command has no default configuration. User Guidelines There are no user guidelines for this command. Example Select menu option: reboot Are you sure you want to reboot the
  • 3Com 2916-SFP | User Guide - Page 204
    204 APPENDIX E: 3COM CLI REFERENCE GUIDE Logout The Logout command terminates the CLI session. Syntax logout Default Configuration This command has no default configuration. User Guidelines There are no user guidelines for this command. Example Select menu option: logout exiting session... Username:
  • 3Com 2916-SFP | User Guide - Page 205
    Password command changes the user's password. Syntax password Default Configuration This command has no default configuration. User Guidelines The user needs to login to the session in order to change the password. Example Select menu option: password Change password for user: username Old password
  • 3Com 2916-SFP | User Guide - Page 206
    Service (CoS) CoS is supported by prioritizing packets based on the required level of service port default, the packet's priority bit (in the VLAN tag), TCP/UDP port number, IP Precedence bit, or DSCP priority bit. Differentiated Services Code Point Service mapped to the Class of Service categories
  • 3Com 2916-SFP | User Guide - Page 207
    for VLAN groups. IEEE 802.1X Port Authentication controls access to the switch ports by requiring users to first enter a user ID and password for authentication. IEEE 802.3ac Defines frame extensions for VLAN tagging. IEEE 802.3x Defines Ethernet frame start/stop requests and timers used for
  • 3Com 2916-SFP | User Guide - Page 208
    . IP Multicast Filtering A process whereby this switch can pass multicast traffic along to participating hosts. IP Precedence The Type of Service ( are mapped one-to-one to the Class of Service categories by default, but may be configured differently to suit the requirements for specific network
  • 3Com 2916-SFP | User Guide - Page 209
    Port Authentication See IEEE 802.1X. Port Mirroring A method whereby data on a target port is mirrored to a monitor port for troubleshooting forwarding. PIM uses the router's IP routing table rather than maintaining a User Service (RADIUS) RADIUS is a logon authentication protocol that uses software
  • 3Com 2916-SFP | User Guide - Page 210
    conditions, including specific error types. IP protocol commonly used for software downloads. Protocol (TFTP) User Datagram Protocol (UDP) UDP provides a datagram mode for packet-switched communications. It uses IP as the underlying transport mechanism to provide access to IP-like services
  • 3Com 2916-SFP | User Guide - Page 211
    regardless of their physical location or connection point in the network. A VLAN serves as a logical workgroup with no physical barriers, and allows users to share information and resources as though located on the same LAN. XModem A protocol used to transfer files between devices. Data is grouped
  • 3Com 2916-SFP | User Guide - Page 212
    your product at: http://eSupport.3com.com/ 3Com eSupport services are based on accounts that are created or that you are authorized to access. Solve Problems Online 3Com offers the following support tool: ■ 3Com Knowledgebase - Helps you to troubleshoot 3Com products. This query-based interactive
  • 3Com 2916-SFP | User Guide - Page 213
    product. Separately orderable software releases and licenses are listed in the 3Com Price List and are available for purchase from your 3Com reseller. Contact Us 3Com offers telephone, internet, and e-mail access to technical support and repair services. To access these services for your region
  • 3Com 2916-SFP | User Guide - Page 214
    sender unopened, at the sender's expense. If your product is registered and under warranty, you can obtain an RMA number online at http://eSupport.3com.com/. First-time users must apply for a user name and password. Telephone numbers are correct at the time of publication. Find a current directory
  • 3Com 2916-SFP | User Guide - Page 215
    Contact Us 215 Country Telephone Number Country Telephone Number You can also obtain support in this region using this URL: http://emea.3com.com/support/email.html You can also obtain non-urgent support in this region at these email addresses: Technical support and general requests:
  • 3Com 2916-SFP | User Guide - Page 216
    the instructions, user may be required to take adequate measures. A copy of the signed Declaration of Conformity can be downloaded from the Product Support web page for the Baseline Switch 2916/2924-SFP Plus family (3CBLSG16 and 3CBLSG24) at http://www.3Com.com. Also available at http://support.3com
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3Com
®
Baseline Switch 2916-SFP Plus
and Baseline Switch 2924-SFP Plus
User Guide
3CBLSG16 / 3CBLSG24
www.3Com.com
Part Number 10016143 Rev. AA
Published May 2007