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XG2000 series User's Guide
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All Rights Reserved, Copyright (C) PFU LIMITED 2009
5.15.12 ip snooping max-group
Function
Defines the number of multicast groups that can be registered for IGMP snooping on specified VLANs.
Use the no form to return to the default setup.
Prompt
xg(config-vlan)#
Command syntax
max-group <10-128>
no ip snooping max-group
Parameter
z max-group <10-128>
Sets the maximum number of multicast groups that can be registered. It can be any integer
between 10 and 128.
Command type
Configuration command
Default
32
Message
% Global IGMP snooping is not enabled.
Explanation
Global IGMP snooping on the device is disabled.
Solution
Enable global IGMP snooping using the “ip snooping protocol” command first then execute
the command again.
% More than 128 total max-group per system.
Explanation
The registered number of multicast addresses allowed on the entire system exceeded the
limit (128 addresses).
Solution
Reduce the maximum number of VLANs using a command such as “ip snooping vlan max-group”,
or disable the IGMP snooping function for other VLANs.
% IGMP snooping vlan-%1$ is not enabled.
Explanation
IGMP snooping is not valid on specified VLAN ID.
[[Inserted string]]%1$: Specified VID
Solution
Valid IGMP snooping on specified VLAN by “ip snooping vlan” or “ip snooping” command.
Note
z Up to 128 multicast MAC addresses can be registered on the entire system.
Therefore, if IGMP snooping is used by multiple VLANs, care must be taken not to exceed the limit number of multicast
MAC addresses.
z Sets the maximum number of multicast groups not to exceed the number of multicast groups that Is registered
currently.
Example
Set the number of groups, that can be registered for IGMP snooping on VLAN 2 and 3, to 30.
xg(config)# interface vlan 2 3
xg(config-vlan)# ip snooping max-group 30