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3Com 3812 Getting Started Guide - Page 17

Power Socket, Redundant Power System Socket (Switch 3848 only), Default Settings, Redundant Power - vlan

UPC - 662705470191

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Power Socket Figure 5 Switch 3848 - rear view Default Settings 17 Redundant Power System Socket Power Socket Each Power Supply automatically adjusts its power setting to any power voltage in the range 100-240 VAC. Redundant Power System Socket (Switch 3848 only) To protect against internal power supply failure, you can use this socket to connect the Switch to a SuperStack 3 Advanced Redundant Power System. See "Connecting a Redundant Power Supply (Switch 3848 only)" on page 23. Default Settings Table 5 shows the default settings for the Switch 3812, Switch 3824 and Switch 3848. If you initialize one of the Switch units, it is returned to these defaults. Table 5 Default Settings Feature Port Status Port Speed Duplex Mode Flow Control Broadcast Storm Control Virtual LANs (VLANs) Multicast Filtering Rapid Spanning Tree Protocol Link Aggregation Control Protocol (LACP) Spanning Tree Protocol Smart Auto-sensing Switch 3812, Switch 3824, or Switch 3848 Enabled Auto-negotiated Auto-negotiated Disabled Enabled Threshold: 3000 broadcast frames per second All ports belong to the untagged Default VLAN (VLAN 1) IGMP filtering enabled Enabled Disabled per port Enabled Enabled

Section	Page
Contents	3
About This Guide	7
Conventions	8
Related Documentation	9
Accessing Online Documentation	9
Documentation Comments	10
Introducing the SuperStack 3 Switch 3812, Switch 3824, and Switch 3848	11
About the Switch	12
Summary of Hardware Features	12
Switch - Front View Detail	13
10BASE-T/ 100BASE-TX/ 1000BASE-T Ports	14
Dual Personality SFP Ports	14
Console Port	15
LEDs	15
Switch - Rear View Detail	16
Power Socket	17
Redundant Power System Socket (Switch 3848 only)	17
Default Settings	17
Installing the Switch	19
Package Contents	20
Choosing a Suitable Site	20
Rack-mounting	21
Placing Units On Top of Each Other	22
The Power-up Sequence	23
Powering-up the Switch	23
Checking for Correct Operation of LEDs	23
Connecting a Redundant Power Supply (Switch 3848 only)	23
Choosing the Correct Cables	24
SFP Operation	25
Approved SFP Transceivers	25
Inserting an SFP Transceiver	25
Removing an SFP Transceiver	27
Setting Up for Management	29
Setting Up Overview	30
IP Configuration	31
Preparing for Management	32
Manually Configuring IP Information	32
Connecting to the Console Port	32
Viewing Automatically Configured IP Information	36
Using 3Com Network Supervisor	36
Connecting to the Console Port	36
Methods of Managing a Switch	39
Command Line Interface Management	39
Web Interface Management	40
SNMP Management	40
Setting Up Command Line Interface Management	40
CLI Management via the Console Port	41
CLI Management over the Network	41
Setting Up Web Interface Management	42
Pre-requisites	42
Web Management Over the Network	43
Setting Up SNMP Management	43
Pre-requisites	43
Default Users and Passwords	44
Changing Default Passwords	44
Problem Solving	45
Solving Problems Indicated by LEDs	46
Solving Hardware Problems	47
Solving Communication Problems	49
Solving Software Upgrade Problems	50
Safety Information	51
Important Safety Information	52
L’information de Sécurité Importante	54
Wichtige Sicherheitsinformationen	56
Power Cord Set - Japan	57
Pin-outs	59
Null Modem Cable	59
PC-AT Serial Cable	60
Modem Cable	61
RJ-45 Pin Assignments	61
Technical Specifications	63
Switch 3812, Switch 3824, and Switch 3848	63
Obtaining Support for your Product	65
Register Your Product to Gain Service Benefits	65
Purchase Value-Added Services	65
Troubleshoot Online	65
Access Software Downloads	66
Contact Us	66
Telephone Technical Support and Repair	66
Index	69