Ip Igmp Snooping Vlan Proxy-Address - Supermicro SSE-G2252 User Manual

ip igmp snooping vlan proxy-address

This command configures a static source address for locally generated query and report
messages used by IGMP proxy reporting. Use the no form to restore the default source
address.
Syntax
[no] ip igmp snooping vlan vlan-id proxy-address source-address
vlan-id - VLAN ID (Range: 1-4093)
source-address - The source address used for proxied IGMP query and report, and
leave messages. (Any valid IP unicast address)
Default Setting
0.0.0.0
Command Mode
Global Configuration
Command Usage
IGMP Snooping uses a null IP address of 0.0.0.0 for the source of IGMP query
messages which are proxied to downstream hosts to indicate that it is not the elected
querier, but is only proxying these messages as defined in RFC 4541. The switch also
uses a null address in IGMP reports sent to upstream ports.
Many hosts do not implement RFC 4541, and therefore do not understand query
messages with the source address of 0.0.0.0. These hosts will therefore not reply to the
queries, causing the multicast router to stop sending traffic to them.
To resolve this problem, the source address in proxied IGMP query and report
messages can be replaced with any valid unicast address (other than the router's own
address) using this command.
Example
The following example sets the source address for proxied IGMP query messages to
10.0.1.8.
SSE-G2252(config)#ip igmp snooping vlan 1 proxy-address 10.0.1.8
SSE-G2252(config)#
Chapter 38: Multicast Filtering Commands
38-19