Variable definitions

The following table describes the Snoop tab fields.

Field Description
Id Specifies the VLAN ID.
Name Specifies the VLAN name.
ReportProxyEnable Specifies the IGMP proxy status: enabled (true) or disabled (false).
Enable Specifies the IGMP snoop status: enabled (true) or disabled (false).
Robustness Specifies tuning for the expected packet loss of a network. This value is equal to the number of expected query packet losses for each query interval, plus 1. If you expect a network to lose query packets, you must increase the robustness value.

Ensure that the robustness value is the same as the configured value on the multicast router (IGMP querier).

The range is from 2–255, and the default is 2. The default value of 2 means that one query for each query interval can be dropped without the querier aging out.
QueryInterval Specifies the frequency (in seconds) at which IGMP query packets are transmitted on the VLAN.

Ensure that the query interval is the same as the configured value on the multicast router (IGMP querier).

The range is from 1 to 65535, and the default is 125.
MRouterPorts Specifies the statically-configured mrouter ports in the VLAN that provide connectivity to a nonquerier IP multicast router. Multicast data and group reports are forwarded out this port to the multicast router.
You do not need to configure this parameter if only one multicast router exists on the VLAN.
Ver1MRouterPorts Displays the mrouter ports in the VLAN that use IGMP version 1.
Ver2MRouterPorts Displays the mrouter ports in the VLAN that use IGMP version 2.
ActiveMrouterPorts Displays all dynamic (querier port) and static mrouter ports that are active on the interface.
ActiveQuerier Displays the IP address of the multicast querier router.
QuerierPort Displays the mrouter port on which the multicast querier router was heard.
MrouterExpiration Specifies the time remaining before the multicast router is aged out on this interface. If the switch does not receive queries before this time expires, it flushes out all group memberships known to the VLAN.
The Query Max Response Interval (obtained from the queries received) is used as the timer resolution.