Allied Telesis Rapier Switch - Manual (Page 66)

66 Rapier Switch Software Reference
Software Release 2.5.1
C613-02025-00 REV B
Figure 5: Example output from the SHOW IP IGMP command.
IGMP Protocol
----------------------------------------------------------------------------------
Status ........................... Enabled
Default Query Interval ........... 125 secs
Default Timeout Interval ......... 270 secs
Last Member Query Interval ....... 10 (1/10secs)
Last Member Query Count .......... 2
Robustness Variable .............. 2
Query Response Interval .......... 100 (1/10secs)
Interface Name .......... vlan1 (DR)
Other Querier timeout ... 164 secs
IGMP Proxy .............. Upstream
Group List ..............
Group. 224.0.1.22 Last Adv. 10.194.254.254 Refresh time 184 secs
Ports 24
All Groups Last Adv. 10.116.2.1 Refresh time 254 secs
Ports 24
Table 21: Parameters in the output of the SHOW IP IGMP command .
Parameter Meaning
Status The status of IGMP; one of “Enabled” or “Disabled”.
Default Query Interval The default interval at which Host Membership Queries are
sent.
Default Timeout Interval The default interval after which entries will be removed
from the group database, if no Host Membership Report is
received.
Last Member Query Interval Max Response Time inserted into Group-Specific Queries
sent in response to Leave Group messages, and is also the
amount of time between Group-Specific Query messages.
Last Member Query Count The number of Group-Specific Queries sent before the
switch assumes there are no local members.
Robustness Variable IGMP is robust to (Robustness Variable-1) packet losses.
Query Response Interval The Max Response Time (in 1/10 secs) inserted into the
periodic General Queries.
Interface Name The name of an interface configured for IGMP.
Other Querier timeout The length of time that remains before a multicast router
decides that there is no longer another multicast router
which should be the querier.
IGMP Proxy The status of IGMP Proxy; one of “Off”, “Upstream” or
“Downstream”.
Group List A list of multicast group memberships for this interface.
Group The group multicast address.
Last Adv. The last host to advertise the membership report.
Refresh time The time interval (in seconds) until the membership group
will be deleted if it does not receive another membership
report before then.
Ports The list of ports listening to this group.