Allied Telesis AR400 manual again forwarding the multicast stream out the port

Query solicitation (rapid recovery from topology changes) > Why convergence takes so long without query solicitation

When link When we reconnect port 1 on the Snooper, the port does not reappear because the comes up Querier has not yet received a Report over it. Therefore, the Querier does not start

again forwarding the multicast stream out the port.

Eventually, the Querier sends an IGMP Query out all its ports. In response it receives a Report from the client (via the Snooper). This restores the port entry and the Querier starts sending the multicast stream again.

The output of the commands show igmpsnooping and show ip igmp both show this restored entry.

Manager Switch 1> show igmpsnooping

IGMP Snooping

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

Status	Enabled
Disabled All-groups ports	........ None
Vlan Name (vlan id) ..... default (1)
Fast Leave	Off
Query Solicitation	Off
Static Router Ports ..... None
Group List
Group. 224.12.13.14	Entry timeout 115 secs
Ports 1

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

Manager Switch 1> show ip igmp

IGMP Protocol

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

Status	Enabled
Default Query Interval	125	secs
Default Timeout Interval	260	secs
Last Member Query Interval	10 (1/10secs)
Last Member Query Count	2
Robustness Variable	2
Query Response Interval	100	(1/10secs)
Disabled All-groups ports	None
Interface Name	vlan1		(DR)
IGMP Status	Enabled
IGMP Proxy	Off

General	Query Reception Timeout .... None
Group List
Group. 224.12.13.14		Last Adv. 10.13.2.11	Refresh time 110 secs
Ports	1

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

Page 32 AlliedWare™ OS How To Note: IGMP