Configuration Guide User guide

FastIron Configuration Guide 1621
53-1002494-02
MLD snooping configuration
Brocade(config)#vlan 20
Brocade(config-vlan-20)#mld-snooping static-group ff05::100 count 2 ethe 1/3 ethe
1/5 to 1/7
Brocade(config-vlan-20)#mld-snooping static-group ff10::200
Syntax: [no] mld-snooping static-group <ipv6-address> [count <num>] [<port-numbers>]
The ipv6-address parameter is the IPv6 address of the multicast group.
The count is optional, which allows a contiguous range of groups. Omitting the count <num> is
equivalent to the count being 1.
Except on FastIron X Series devices, if there are no port-numbers, the static groups apply to the
entire VLAN.
Configuring static router ports
All multicast control and data packets are forwarded to router ports that receive queries. Although
router ports are learned, you can configure static router ports to force multicast traffic to specific
ports, even though these ports never receive queries. To configure static router ports, enter
commands such as the following.
Brocade(config)#vlan 70
Brocade(config-vlan-70)#mld-snooping router-port e 1/4 to 1/5 e 1/8
Syntax: [no] mld-snooping router-port ethernet <port-numbers>
Disabling static group proxy
A device with statically configured groups acts as a proxy and sends membership reports for its
static groups when it receives general or group-specific queries. When a static group configuration
is removed, the group is immediately deleted from the active group table. However, the device does
not send leave messages to the querier. The querier should age out the group. The proxy activity
can be disabled (the default is enabled).
Example
Brocade(config)#vlan 20
Brocade(config-vlan-20)#mld-snooping proxy-off
Syntax: [no] mld-snooping proxy-off
By default, MLD snooping proxy is enabled.
Enabling MLDv2 membership tracking and fast leave
for the VLAN
MLDv2 provides membership tracking and fast leave services to clients. In MLDv1, only one client
per interface must respond to a router queries; leaving some clients invisible to the router, which
makes it impossible for the device to track the membership of all clients in a group. In addition,
when a client leaves the group, the device sends group-specific queries to the interface to see if
other clients on that interface need the data stream of the client who is leaving. If no client
responds, the device waits a few seconds before stopping the traffic. You can configure the wait
time with the ipv6 mld-snooping leave-wait-time command. Refer to “Modifying the wait time
before stopping traffic when receiving a leave message” on page 1618.