IPv6 Multicast Commands
ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
ExtremeWare XOS 11.5 Command Reference Guide
1876
configure mld snooping timer
configure mld snooping timer <router_timeout> <host_timeout>
Description
Configures the MLD snooping timers.
Syntax Description
Default
The router timeout default setting is 260 seconds. The host timeout setting is 260 seconds.
Usage Guidelines
Timers should be set to approximately 2.5 times the router query interval in use on the network. Specify
the following:
●
router timeout—The maximum time, in seconds, that a router snooping entry can stay without
receiving a router report. The range is 10 to 214,748,364 seconds (6.8 years). The default setting is 260
seconds.
●
host timeout—The maximum time, in seconds, that a group snooping entry can stay without
receiving a group report. The range is 10 to 214,748,364 seconds (6.8 years). The default setting is 260
seconds.
MLD snooping is a layer 2 function of the switch. It does not require multicast routing to be enabled.
The feature reduces the flooding of IPv6 multicast traffic. On the VLAN, MLD snooping optimizes the
usage of network bandwidth and prevents multicast traffic from being flooded to parts of the network
that do not need it. The switch does not reduce any IP multicast traffic in the local multicast domain
(FF02::x).
MLD snooping is enabled by default on the switch. MLD snooping expects at least one device on every
VLAN to periodically generate MLD query messages. Without an MLD querier, the switch eventually
stops forwarding IPv6 multicast packets to any port, because the MLD snooping entries will time out,
based on the value specified in
host timeout
.
Example
The following command configures the MLD snooping timers:
configure mld snooping timer 600 600
History
This command was first available in ExtremeWare XOS 11.2.
router_timeout
Specifies the time in seconds before removing a router snooping entry.
host_timeout
Specifies the time in seconds before removing a host’s group snooping entry.