Quick Reference Guide

PowerConnect B-Series TI24X Configuration Guide 535
53-1002269-02
IGMP Proxy
19
Clearing IGMP statistics
To clear statistics for IGMP traffic, enter the following command.
PowerConnect# clear igmp traffic
Syntax: clear igmp traffic
This command clears all the multicast traffic information on all interfaces on the device.
IGMP Proxy
IGMP Proxy provides a means for the PowerConnect B-Series TI24X routers to receive any or all
multicast traffic from an upstream device if the router is not able to run PIM.
IGMP Proxy enables the router to issue IGMP host messages on behalf of hosts that the router
discovered through standard PIM interfaces. The router acts as a proxy for its hosts and performs
the host portion of the IGMP task on the upstream interface as follows:
• When queried, the router sends group membership reports for the groups learned
• When one of its hosts joins a multicast address group to which none of its other hosts belong,
the router sends unsolicited membership reports to that group.
• When the last of its hosts in a particular multicast group leaves the group, the PowerConnect
B-Series TI24X router sends an unsolicited leave group membership report to group for all
routers (multicast IP address 244.0.0.2)
Configuration notes
When using IGMP Proxy, you must do the following.
1. Configure PIM on all multicast client ports to build the group membership table. The group
membership table will be reported by the proxy interface. Refer to “Globally enabling and
disabling PIM” on page 473.
2. Enable IP multicast on an interface to an upstream PowerConnect B-Series TI24X router that
will be the IGMP proxy interface and configure IGMP Proxy on that interface
MbrV2 The IGMP V2 membership report.
MbrV3 The IGMP V3 membership report.
Leave Number of IGMP V2 “leave” messages on the interface. (See ToEx for IGMP V3.)
IsIN Number of source addresses that were included in the traffic.
IsEX Number of source addresses that were excluded in the traffic.
ToIN Number of times the interface mode changed from exclude to include.
ToEX Number of times the interface mode changed from include to exclude.
ALLOW Number of times that additional source addresses were allowed or denied on the interface.
BLK Number of times that sources were removed from an interface.
TABLE 92 Output of show ip igmp traffic (Continued)
This field Displays