Allied Telesis AR400 manual When we deny groups instead of replacing them

IGMP throttling (limiting the number of streams for each subscriber) > Explanation of IGMP throttling (limiting the number of streams

Membership Report for that group. IGMP throttling cannot distinguish between different clients on the same port. For this reason, the limit is tied to the port, not to the client.

When we deny groups instead of replacing them

Finally, we will consider the effect of changing the IGMP throttle action to deny, by using the command below.

XModify switch 2 Configuration

set switch port=2 igmpmaxgroup=6 igmpaction=deny

Once the six slots are filled, additional attempts to join other groups fail. Neither switch 2’s IGMP snooping table nor switch 1’s IGMP table register the new groups, because switch 2 drops the client’s Membership Report without taking any further action.

However, if the client attempts to join a group that already occupies one of the six slots, this renews the IGMP Querier’s refresh time and the IGMP Snooper’s entry timeout for the

Page 46 AlliedWare™ OS How To Note: IGMP