АМАТЕК AN-SGM28P24-400 [197/322] Igmp snooping configuration

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send back the IGMP REPORT。

When the host leaves the multicast group, there are two ways to switch off the two layer

multicast from the switch: leave out of time and receive the IGMP LEAVE packet。

When the switch over a certain time from one port to receive a multicast group IGMP

REPORT packet, the port should be removed from the two layer multicast entry corresponding, if

the two layer multicast entries without port, delete two layer multicast entries。

When the switch fast-leave is configured as a ENABLE, if a port receives a multicast group

IGMP LEAVE packet, clear the port from the two layer multicast entry corresponding, if the two

layer multicast no entry port, then delete the layer two multicast entries。

Fast-leave is generally used by one host in a port under the circumstances; if a port under

more than one host, you can configure the fast-leave-timeout waiting time, so as to ensure the

continuity and reliability of multicast flow。

13.2 IGMP SNOOPING configuration

13.2.1 IGMP SNOOPING default configuration

The default IGMP SNOOPING is closed, and the two layer hardware multicast forwarding

table is in the unregistered forwarding mode。

Fast-leave is closed by default。

Fast-leave-timeout time is 300 seconds。

The age time of multicast group REPORT port defaults to 400 seconds。

The age time of multicast group QUERY port defaults to 300 seconds。

13.2.2 Open and close IGMP SNOOPING

Open the IGMP SNOOPING protocol can be global open, you can also open part of the

VLAN; only global open IGMP SNOOPING to open or close a VLAN IGMP SNOOPING。

Open global IGMP SNOOPING