| Online Help for Optivity Switch Manager Release 1.1 |
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The General tab displays the settings for IGMP Snoop on the selected device.
The table below describes the fields in the General tab.
VlanId
VLAN ID of the VLAN.
Enable
Indicates whether IGMP snooping works only when a multicast router exists in the VLAN.
ReportProxyEnable
Whether or not the IGMP report proxy feature is enabled. When this feature is enabled, reports are forwarded from hosts to the multicast router once per group per query interval or when there is new group information. When this feature is disabled, all reports from different hosts are forwarded to multicast routers, and more than one group report may be forwarded for the same multicast group per query interval. The default is enabled.
Robustness
Robust value (based on the network's tendency to lose data). This value, along with the query interval, is used to determine the group membership timeouts. It should be set to that of the multicast router in the network. If more than one multicast router is within a VLAN and the robust values are different, set the Passport switch to the highest value. The range is 2 to 255. The default is 2.
QueryInterval(sec)
In general, the time between queries sent to the host. this value is used to determine the multicast group membership timeouts. The real interval between queries is still dependent on the multicast router within the VLAN.
Set this value to be the same as that of the multicast routers in the VLAN. If there are multiple multicast routers on the net, select the highest query interval value. The query interval is in seconds (1 to 65535) with a default of 125 seconds.
MRouterPorts
Ports that have been configured as Multicast Router Ports. Such ports provide connectivity but do not have to be directly attached to a multicast router so the multicast data and group reports are forwarded to the router.
ActiveMRouter
Active Multicast Router Ports are ports that provide connectivity but do not have to be directly attached to a multicast router. These ports include the Querier port and all ports in the forwarding state that were configured by the user, as well as those that were dynamically learned using receiving queries.
ActiveQuerier
IP address of the last querier (multicast router) of this VLAN that was heard by the switch.
QuerierPort
Port on which the LastQuerier is being heard.
MRouterExpiration
Time remaining before the multicast router is aged out. If the switch does not receive any 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.
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