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Example:
Switch(config)#ip igmp snooping vlan 2 L2-general-query-version 2
21.2.11 ip igmp snooping vlan limit
Command: ip igmp snooping vlan <vlan-id> limit {group <g_limit> | source
<s_limit>}
no ip igmp snooping vlan <vlan-id> limit
Function: Configure the max group count of VLAN and the max source count of every
group. The ―no ip igmp snooping vlan <vlan-id> limit‖ command cancels this
configuration.
Parameter: <vlan-id> is the VLAN number.
g_limit：<1-65535>, max number of groups joined.
s_limit：<1-65535>, max number of source entries in each group, consisting
of include source and exclude source.
Command mode: Global Mode.
Default: Maximum 50 groups by default, with each group capable with 40 source entries.
Usage Guide: When number of joined group reaches the limit, new group requesting for
joining in will be rejected for preventing hostile attacks. To use this command, IGMP
snooping must be enabled on VLAN. The ―no‖ form of this command restores the default
other than set to ―no limit‖. For the safety considerations, this command will not be
configured to ―no limit‖. It is recommended to use default value and if layer 3 IGMP is in
operation, please make this configuration in accordance with the IGMP configuration as
possible.
Example: Switch(config)#ip igmp snooping vlan 2 limit group 300
21.2.12 ip igmp snooping vlan mrouter-port interface
Command: ip igmp snooping vlan <vlan-id> mrouter-port interface [<ehternet> |
<port-channel>] <ifname>
no ip igmp snooping vlan <vlan-id> mrouter-port interface [<ehternet>
| <port-channel>] <ifname>
Function: Configure static mrouter port of VLAN. The no form of the command cancels
this configuration.
Parameter: vlan-id: ranging between <1-4094>
ehternet: Name of Ethernet port