C H A P T E R
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Catalyst 2975 Switch Software Configuration Guide
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Configuring IGMP Snooping and MVR
This chapter describes how to configure Internet Group Management Protocol (IGMP) snooping on the
Catalyst 2975 switch, including an application of local IGMP snooping, Multicast VLAN Registration
(MVR). It also includes procedures for controlling multicast group membership by using IGMP filtering
and procedures for configuring the IGMP throttling action. Unless otherwise noted, the term
switch
refers to a standalone switch and a switch stack.
Note
For complete syntax and usage information for the commands used in this chapter, see the switch
command reference for this release and the “IP Multicast Routing Commands” section in the
Cisco IOS
IP Command Reference, Volume 3 of 3:Multicast, Release 12.2
from the Cisco.com page under
Documentation
>
Cisco IOS Software
>
12.2 Mainline
>
Command References
.
This chapter consists of these sections:
•
Understanding IGMP Snooping, page 22-1
•
Configuring IGMP Snooping, page 22-6
•
Displaying IGMP Snooping Information, page 22-15
•
Understanding Multicast VLAN Registration, page 22-17
•
•
Displaying MVR Information, page 22-23
•
Configuring IGMP Filtering and Throttling, page 22-24
•
Displaying IGMP Filtering and Throttling Configuration, page 22-29
Note
You can either manage IP multicast group addresses through features such as IGMP snooping and MVR,
or you can use static IP addresses.
Understanding IGMP Snooping
Layer 2 switches can use IGMP snooping to constrain the flooding of multicast traffic by dynamically
configuring Layer 2 interfaces so that multicast traffic is forwarded to only those interfaces associated
with IP multicast devices. As the name implies, IGMP snooping requires the LAN switch to snoop on
the IGMP transmissions between the host and the router and to keep track of multicast groups and
member ports. When the switch receives an IGMP report from a host for a particular multicast group,
Содержание 2975 - Catalyst LAN Base Switch
Страница 36: ...Contents xxxvi Catalyst 2975 Switch Software Configuration Guide OL 19720 02 ...
Страница 40: ...xxxviii Catalyst 2975 Switch Software Configuration Guide OL 19720 02 Preface ...
Страница 62: ...1 22 Catalyst 2975 Switch Software Configuration Guide OL 19720 02 Chapter 1 Overview Where to Go Next ...
Страница 398: ...13 30 Catalyst 2975 Switch Software Configuration Guide OL 19720 02 Chapter 13 Configuring VLANs Configuring VMPS ...
Страница 424: ...15 18 Catalyst 2975 Switch Software Configuration Guide OL 19720 02 Chapter 15 Configuring VTP Monitoring VTP ...
Страница 628: ...26 8 Catalyst 2975 Switch Software Configuration Guide OL 19720 02 Chapter 26 Configuring UDLD Displaying UDLD Status ...
Страница 660: ...28 8 Catalyst 2975 Switch Software Configuration Guide OL 19720 02 Chapter 28 Configuring RMON Displaying RMON Status ...
Страница 888: ...38 32 Catalyst 2975 Switch Software Configuration Guide OL 19720 02 Chapter 38 Troubleshooting Troubleshooting Tables ...