
Software Version 2.7.5 31
Software Version 2.7.5
C613-10454-00 REV A
IGMP Throttling
IGMP throttling controls the maximum number of multicast groups that a port
can join. When the number of multicast group memberships associated with a
switch port reaches the limit set, further Membership Reports are subject to a
throttling action—deny or replace.
If you configure a throttling action of deny, when the multicast group
membership associated with the port reaches the set limit, additional
Membership Reports from that switch port are denied until old membership
entries are aged out.
If you configure a throttling action of replace, when the multicast group
membership associated with the port reaches the set limit, additional
Membership Reports from that switch port replace existing membership
entries.
Static associations of switch ports and multicast groups are counted in the
number of multicast group memberships, but they are not affected by the
throttling action.
Configuring IGMP
throttling
To enable IGMP throttling on a switch port, set the maximum number of group
memberships and the throttling action to take, by using the command:
set switch port={port-list|all} igmpmaxgroup=1..65535
igmpaction={deny|replace} [other-options...]
To disable IGMP throttling on a switch port, set the maximum number of
group memberships to none, by using the command:
set switch port={port-list|all} igmpmaxgroup=none
[other-options...]
To display the IGMP throttling settings for a switch port, use the command:
show switch port[={port-list|all}]
Command Changes
The following table summarises the new and modified commands:
Command Change
IGMP Filtering
add igmp filter New command
create igmp filter New command
delete igmp filter New command
destroy igmp filter New command
set igmp filter New command
show igmp filter New command
set switch port New igmpfilter parameter
show switch port New IGMP Filter field
IGMP Throttling
set switch port New igmpmaxgroup parameter
New igmpaction parameter
show switch port New Max-groups/Joined field
New IGMP Max-groups Action field
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