Allied Telesis AR400 manual Page 97 AlliedWare OS How To Note IGMP

Stopping snoopers from snooping non-IGMP messages > Controlling which addresses create All Groups entries

Manager Switch 2> 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 214 secs
Ports 24-25

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

Manager Switch 2> Timing out port 24 from group 224.0.0.2 on vlan100 Deleting port 24 from group 224.0.0.2 on vlan100

Reconstructing snooping entries: 24,

Manager Switch 2> 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
Group. 224.12.13.14			Entry timeout	224	secs
Ports		None
All	Groups		Entry timeout	242	secs
Ports		25

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

Looking at the above outputs, note that debugging did not print out any messages about the OSPF router after we removed the address, but it did tell us when the port had been removed from the All Groups list. Also, remember that port 24 only times out of the All Groups list when its internal IGMP message timer counts down to zero.

Page 97 AlliedWare™ OS How To Note: IGMP