Users Guide

30 Contents
MVR Statistics . . . . . . . . . . . . . . . . . . . 954
GARP Timers
. . . . . . . . . . . . . . . . . . . . 955
GMRP Parameters
. . . . . . . . . . . . . . . . . 957
MFDB GMRP Table
. . . . . . . . . . . . . . . . . 959
Configuring L2 Multicast Features (CLI)
. . . . . . . . . 960
Configuring Layer-2 Multicasting
. . . . . . . . . . 960
Configuring IGMP Snooping on VLANs
. . . . . . . 961
Configuring IGMP Snooping Querier
. . . . . . . . 962
Configuring MLD Snooping on VLANs
. . . . . . . 963
Configuring MLD Snooping Querier
. . . . . . . . 964
Configuring MVR
. . . . . . . . . . . . . . . . . . 965
Configuring GARP Timers and GMRP
. . . . . . . . 967
Case Study on a Real-World Network Topology
. . . . 968
Multicast Snooping Case Study
. . . . . . . . . . 968
25 Snooping and Inspecting Traffic . . . . . . 973
Traffic Snooping and Inspection Overview . . . . . . . 973
What Is DHCP Snooping?
. . . . . . . . . . . . . . 974
How Is the DHCP Snooping Bindings Database
Populated? . . . . . . . . . . . . . . . . . . . . . 975
What Is IP Source Guard?
. . . . . . . . . . . . . 978
What is Dynamic ARP Inspection?
. . . . . . . . . 979
Why Is Traffic Snooping and Inspection
Necessary?
. . . . . . . . . . . . . . . . . . . . . 980
Default Traffic Snooping and Inspection Values
. . . . 980
Configuring Traffic Snooping and Inspection (Web)
. . 982
DHCP Snooping Configuration
. . . . . . . . . . . 982
DHCP Snooping Interface Configuration
. . . . . . 983
DHCP Snooping VLAN Configuration
. . . . . . . . 985
DHCP Snooping Persistent Configuration
. . . . . 986