Allied Telesis AR400 manual IGMP debugging, X A client joins a group, Example

IGMP debugging > Example

IGMP debugging

In this section, we shall examine the debugging messages that the router or switch outputs when certain events occur while debugging is enabled. To enable debugging, use the command:

enable ip igmp debug

Example

This example uses the same network configuration as "IGMP snooping" on page 9. For convenience, the diagram is reproduced below.

	Multicast Server
	port 1	AT-8948
			Switch 1:
			Querier
	port 50	port 49
	(blocked by STP)
	port 26		port 26
Switch 2:	Rapier 24i		Rapier 24i	Switch 3:
Snooper	port 25		port 25	Snooper
	port 2		port 3
	Client 1		Client 2
				igmp-snooper.eps

XA client joins a group

Client 2 sends a Membership Report for group 224.12.13.14. Switch 1 sees the report on vlan100 (port 49), and adds the port to its IGMP and IGMP snooping tables.

Manager Switch 1> IGMP Snoop(48): Report -> snooped group 224.12.13.14 added Adding port 49 for group 224.12.13.14 on vlan100

IGMP Rx(48): Report -> group 224.12.13.14 added

Note that the debugging output does not identify which client sent the Membership Report.

Page 103 AlliedWare™ OS How To Note: IGMP