Allied Telesis AR400 manual X A port entry times out, X Snooped ports change

IGMP debugging > Example

XA port entry times out

Client 2 sends a Membership Report for group 224.12.13.14. Switch 1 sees the report on vlan100 (port 49) and adds an entry. The entry eventually expires.

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

Manager Switch 1> IGMP Snoop Timeout: group=224.12.13.14 (0) is deleted Deleting all ports for group 224.12.13.14 on vlan100

IGMP Timeout: group=224.12.13.14 (0) is deleted

XSnooped ports change

Switch 3—a Snooper—sees a Version 2 Membership Query message on vlan100 from the Querier and forwards it to all ports in the same VLAN. In the debugging output, the list of ports is the fwdports list. If we take a port out of the VLAN, the fwdports list changes.

Manager Switch 3> IGMP Snoop: resending pkt to vlan utPorts: 1-26 fwdPorts: 1-26

IGMP Snoop(25) on vlan100: Query -> code 100

snooped group 224.0.0.2 added

Adding port 26 for group 224.0.0.2 on vlan100

IGMP MVR Snoop: discard - no MVR snooper for code 17

Manager Switch 3> del vlan=100 port=5

Info (1089003): Operation successful.

Manager Switch 3> IGMP Snoop: resending pkt to vlan utPorts: 1-4,6-26 fwdPorts: 1-4,6-26

IGMP Snoop(25) on vlan100: Query -> code 100

snooped group 224.0.0.2 added

Adding port 26 for group 224.0.0.2 on vlan100

IGMP MVR Snoop: discard - no MVR snooper for code 17

Page 105 AlliedWare™ OS How To Note: IGMP