Allied Telesis AR400 X A report is filtered out, X A port in the All Groups list is unplugged

IGMP debugging > Example

This example also shows what debugging output looks like when the Snooper receives a General Query. The Querier sends the General Query to the destination address 224.0.0.1 (the IGMP Query address) and the Snooper tells us that it has added the “router” port to its All Groups list. In the IGMP standards, “All routers on this subnet” are identified with the group address of 224.0.0.2, so the debugging output refers to that address.

Manager Switch 3> show igmpsnooping

IGMP Snooping

------------------------------------------------------------------------

Status			Enabled
Disabled All-groups		ports	........ None
Vlan	Name (vlan id)	..... default (1)
Fast	Leave		Off
Group List
No	group memberships.
Vlan	Name (vlan id)	..... vlan100 (100)
Fast	Leave		Off

Group	List
All	Groups	Entry timeout 144 secs
Ports 26

------------------------------------------------------------------------

For more information about router addresses, see "Controlling which addresses create All Groups entries" on page 95.

XA report is filtered out

The switch drops a Membership Report because of an IGMP filter. See "Explanation of IGMP filtering (controlling multicast distribution)" on page 38 for more information about filters.

Manager Switch 1>

IGMP filter: discarded report for group 224.0.1.22 on port 1

XA port in the All Groups list is unplugged

The switch deletes a port from the All Groups list after the port is disconnected.

Manager Switch 3> Deleting port 24 from group 224.0.0.2 on vlan100 Reconstructing snooping entries: 25,

Page 106 AlliedWare™ OS How To Note: IGMP