Concept Guide

Table Of Contents
FIP Snooping Example.................................................................................................................................................. 348
Debugging FIP Snooping.............................................................................................................................................. 348
23 Internet Group Management Protocol (IGMP).........................................................................................350
IGMP Overview............................................................................................................................................................. 350
IGMP Version 2..............................................................................................................................................................350
Joining a Multicast Group........................................................................................................................................351
Leaving a Multicast Group.......................................................................................................................................351
IGMP Version 3...............................................................................................................................................................351
Joining and Filtering Groups and Sources............................................................................................................ 352
Leaving and Staying in Groups...............................................................................................................................353
IGMP Snooping..............................................................................................................................................................354
How IGMP Snooping is Implemented on an Aggregator.......................................................................................... 354
Disabling Multicast Flooding.........................................................................................................................................354
Displaying IGMP Information........................................................................................................................................354
24 Interfaces.................................................................................................................................................357
Basic Interface Conguration....................................................................................................................................... 357
Advanced Interface Conguration...............................................................................................................................357
Interface Types...............................................................................................................................................................358
View Basic Interface Information.................................................................................................................................358
Conguring the Default Interface................................................................................................................................360
Enabling a Physical Interface........................................................................................................................................ 361
Physical Interfaces......................................................................................................................................................... 361
Conguration Task List for Physical Interfaces.....................................................................................................361
Overview of Layer Modes...................................................................................................................................... 362
Conguring Layer 2 (Data Link) Mode..................................................................................................................362
Conguring Layer 2 (Interface) Mode.................................................................................................................. 362
Conguring Layer 3 (Network) Mode...................................................................................................................363
Conguring Layer 3 (Interface) Mode.................................................................................................................. 363
Automatic recovery of an Err-disabled interface....................................................................................................... 364
Conguring an automatic recovery for an Err-disabled interface......................................................................365
Management Interfaces................................................................................................................................................365
Conguring Management Interfaces on the Switch........................................................................................... 366
VLAN Interfaces.............................................................................................................................................................367
Loopback Interfaces...................................................................................................................................................... 368
Null Interfaces................................................................................................................................................................ 368
VLAN Membership........................................................................................................................................................ 368
Default VLAN .......................................................................................................................................................... 369
Port-Based VLANs.................................................................................................................................................. 369
VLANs and Port Tagging........................................................................................................................................ 369
Conguring VLAN Membership............................................................................................................................. 370
Displaying VLAN Membership................................................................................................................................370
Adding an Interface to a Tagged VLAN................................................................................................................. 371
Adding an Interface to an Untagged VLAN...........................................................................................................371
VLAN Conguration on Physical Ports and Port-Channels................................................................................372
Contents
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