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Defining an IPv4 Interface, Administration > Management Interface > IPv4 Interface

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Configuring IP Information Management and IP Interfaces 16 If the switch does not receive a DHCP response in 60 seconds, it continues to send DHCPDISCOVER queries, and adopts the default IP address: 192.168.1.254/ 24. IP address collisions occur when the same IP address is used in the same IP subnet by more than one device. Address collisions require administrative actions on the DHCP server and/or the devices that collide with the switch. When a VLAN is configured to use dynamic IP addresses, the switch issues DHCP requests until it is assigned an IP address from a DHCP server. The management VLAN can be configured with a static or dynamic IP address. The IP address assignment rules for the switch are as follows: • Unless the switch is configured with a static IP address, it issues DHCP queries until a response is received from a DHCP server. • If the IP address on the switch is changed, the switch issues gratuitous ARP packets to the corresponding VLAN to check IP address collisions. This rule also applies when the switch reverts to the default IP address. • The system status LED changes to solid green when a new unique IP address is received from the DHCP server. If a static IP address has been set, the system status LED also changes to solid green. The LED flashes when the switch is acquiring an IP address and is currently using the factory default IP address 192.168.1.254. • The same rules apply when a client must renew the lease, prior to its expiration date through a DHCPREQUEST message. • With factory default settings, when no statically-defined or DHCP-acquired IP address is available, the default IP address is used. When the other IP addresses become available, the addresses are automatically used. The default IP address is always on the management VLAN. Defining an IPv4 Interface To manage the switch by using the web-based switch configuration utility, the IPv4 switch management IP address must be defined and known. The switch IP address can be manually configured or automatically taken from a DHCP server. To configure the IPv4 switch IP address: STEP 1 Click Administration > Management Interface > IPv4 Interface. The IPv4 Interface page opens. STEP 2 Enter values for the following fields: Cisco Small Business 200 Series Smart Switch Administration Guide 209

Section	Page
Getting Started	7
Starting the Web-based Switch Configuration Utility	7
Quick Start Switch Configuration	11
Interface Naming Conventions	11
Window Navigation	13
Viewing Statistics	17
Viewing Ethernet Interfaces	17
Viewing Etherlike Statistics	18
Viewing 802.1X EAP Statistics	19
Managing RMON	21
Managing System Logs	24
Setting System Log Settings	24
Setting Remote Logging Settings	26
Viewing Memory Logs	27
Managing System Files	29
Types of System Files	29
Upgrade/Backup Firmware/Language	32
Downloading or Backing-up a Configuration or Log	34
Viewing Configuration Files Properties	37
Copying Configuration Files	38
DHCP Auto Configuration	39
General Administrative Information	43
Switch Models	43
System Information	45
Rebooting the Switch	47
Monitoring the Fan Status and Temperature	48
Defining Idle Session Timeout	48
Pinging a Host	49
System Time	51
System Time Options	52
SNTP Modes	53
Configuring System Time	54
Managing Device Diagnostics	61
Testing Copper Ports	61
Displaying Optical Module Status	63
Configuring Port and VLAN Mirroring	64
Viewing CPU Utilization and Secure Core Technology	66
Configuring Discovery	68
Configuring Bonjour Discovery	68
LLDP and CDP	69
Configuring LLDP	70
Configuring CDP	91
Port Management	100
Configuring Ports	100
Setting Basic Port Configuration	101
Configuring Link Aggregation	103
Configuring Green Ethernet	111
Smartports	118
Overview	118
What is a Smartport	119
Smartport Types	119
Smartport Macros	122
Macro Failure and the Reset Operation	123
How the Smartport Feature Works	124
Auto Smartport	124
Error Handling	128
Default Configuration	128
Relationships with Other Features and Backwards Compatibility	129
Common Smartport Tasks	129
Configuring Smartport Using The Web-based Interface	131
Built-in Smartport Macros	136
Managing Power-over-Ethernet Devices	148
PoE on the Switch	148
Configuring PoE Properties	151
Configuring the PoE Power, Priority, and Class	152
VLAN Management	155
VLANs	155
Configuring Default VLAN Settings	158
Creating VLANs	159
Configuring VLAN Interface Settings	160
Defining VLAN Membership	161
Voice VLAN	165
Configuring the Spanning Tree Protocol	179
STP Flavors	179
Configuring STP Status and Global Settings	180
Defining Spanning Tree Interface Settings	182
Configuring Rapid Spanning Tree Settings	184
Managing MAC Address Tables	187
Configuring Static MAC Addresses	188
Managing Dynamic MAC Addresses	188
Configuring Multicast Forwarding	190
Multicast Forwarding	190
Defining Multicast Properties	193
Adding MAC Group Address	195
Adding IP Multicast Group Addresses	197
Configuring IGMP Snooping	198
MLD Snooping	200
Querying IGMP/MLD IP Multicast Group	203
Defining Multicast Router Ports	204
Defining Forward All Multicast	205
Defining Unregistered Multicast Settings	206
Configuring IP Information	207
Management and IP Interfaces	207
Configuring ARP	219
Domain Name Systems	220
Configuring Security	224
Defining Users	225
Configuring RADIUS	228
Configuring Management Access Authentication	230
Defining Management Access Method	231
Configuring TCP/UDP Services	236
Defining Storm Control	237
Configuring Port Security	238
Configuring 802.1X	241
Denial of Service Prevention	247
Using the SSL Feature	249
SSL Overview	249
Default Settings and Configuration	249
SSL Server Authentication Settings	250
Secure Sensitive Data	252
Introduction	252
SSD Rules	253
SSD Properties	258
Configuration Files	261
SSD Management Channels	266
Menu CLI and Password Recovery	266
Configuring SSD	267
Configuring Quality of Service	270
QoS Features and Components	271
Configuring QoS - General	272

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Configuring IP Information

Management and IP Interfaces

Cisco Small Business 200 Series Smart Switch Administration Guide

209

If the switch does not receive a DHCP response in 60 seconds, it continues to

send DHCPDISCOVER queries, and adopts the default IP address: 192.168.1.254/

24.

IP address collisions occur when the same IP address is used in the same IP

subnet by more than one device. Address collisions require administrative actions

on the DHCP server and/or the devices that collide with the switch.

When a VLAN is configured to use dynamic IP addresses, the switch issues DHCP

requests until it is assigned an IP address from a DHCP server. The management

VLAN can be configured with a static or dynamic IP address.

The IP address assignment rules for the switch are as follows:

•

Unless the switch is configured with a static IP address, it issues DHCP

queries until a response is received from a DHCP server.

•

If the IP address on the switch is changed, the switch issues gratuitous ARP

packets to the corresponding VLAN to check IP address collisions. This rule

also applies when the switch reverts to the default IP address.

•

The system status LED changes to solid green when a new unique IP

address is received from the DHCP server. If a static IP address has been

set, the system status LED also changes to solid green. The LED flashes

when the switch is acquiring an IP address and is currently using the factory

default IP address 192.168.1.254.

•

The same rules apply when a client must renew the lease, prior to its

expiration date through a DHCPREQUEST message.

•

With factory default settings, when no statically-defined or DHCP-acquired

IP address is available, the default IP address is used. When the other IP

addresses become available, the addresses are automatically used. The

default IP address is always on the management VLAN.

Defining an IPv4 Interface

To manage the switch by using the web-based switch configuration utility, the

IPv4 switch management IP address must be defined and known. The switch IP

address can be manually configured or automatically taken from a DHCP server.

To configure the IPv4 switch IP address:

STEP 1

Click

Administration > Management Interface > IPv4 Interface

. The

IPv4

Interface

page opens.

STEP

Enter values for the following fields: