Chapter 24
| Multicast Filtering Commands
MLD Snooping
– 709 –
Example
Console(config)#ipv6 mld snooping version 1
Console(config)#
ipv6 mld snooping
vlan immediate-leave
This command immediately deletes a member port of an IPv6 multicast service
when a leave packet is received at that port and immediate-leave is enabled for the
parent VLAN. Use the no form to restore the default.
Syntax
ipv6 mld snooping vlan vlan-id immediate-leave [by-host-ip]
vlan-id - A VLAN identification number. (Range: 1-4094)
by-host-ip - Specifies that the member port will be deleted only when
there are no hosts joining this group.
Default Setting
Disabled
Command Mode
Global Configuration
Command Usage
◆ If MLD immediate-leave is not used, a multicast router (or querier) will send a
group-specific query message when an MLD group leave message is received.
The router/querier stops forwarding traffic for that group only if no host replies
to the query within the specified timeout period.
◆ If MLD immediate-leave is enabled, the switch assumes that only one host is
connected to the interface. Therefore, immediate leave should only be enabled
on an interface if it is connected to only one MLD-enabled device, either a
service host or a neighbor running MLD snooping.
◆ If the “by-host-ip” option is used, the router/querier will not send out a group-
specific query when an MLD leave message is received, but will check if there
are other hosts joining the multicast group. Only when all hosts on that port
leave the group will the member port be deleted.
Example
The following shows how to enable MLD immediate leave.
Console(config)#ipv6 mld snooping immediate-leave
Console(config}#
To Next Page
Loading...
Need help?
General