Brocade BigIron RX Series Configuration Guide - Manual (Page 1438)

1360 BigIron RX Series Configuration Guide
53-1002484-04
Multicast Listener Discovery and source specific multicast protocols (MLDv2)
50
• General Query, used to learn which multicast addresses have listeners on an attached
link.
• Multicast-Address-Specific Query, used to learn if a particular multicast address has any
listeners on an attached link.
• Multicast listener reports
• Multicast listener done messages
MLDv2 mode interfaces exchange the following types of messages with MLDv2 hosts:
• Multicast listener queries
• MLDv2 multicast listener reports
Enabling MLDv2
MLDv1 is enabled once PIM Sparse (PIM-SM) is enabled on an interface. You then enable version 2
of MLD, the version that supports source filtering.
MLDv2 interoperates with MLDv1. MLDv1 messages are understood by MLDv2. When an IPv6
router detects that the node is operating in MLDv1 mode, the router switches to MLDv1 for that
node even though queries are sent in MLDv2. To enable PIM-SM, do the following.
1. Enable IPv6 PIM mode by entering a command such as the following.
BigIron RX(config)#ipv6 router pim
BigIron RX(config-ipv6-pim-router)#
Syntax: [no] ipv6 router pim
2. At the interface level enable MLDv2 by entering the following commands.
BigIron RX(config)#interface ethernet 1/1
BigIron RX(config-if-e10000-1/1)#ipv6 pim-sparse
Syntax: [no] ipv6 pim-sparse
3. Once PIM-SM is enabled, specify which version of MLD will be used by entering the following
command.
BigIron RX(config-if-e10000-1/1)#ipv6 mld port-version 2
Syntax: ipv6 mld port-version <version-number>
Enter 1 or 2 for <version-number>. Be sure to enter “2” if you want to use source filtering.
Enabling source specific multicast
Once MDLv2 is enabled, source specific multicast for PIM can be enabled for multicast group
addresses in the ff30::0/16 IPv6 address range. If MLDv2 is enabled, but SSM is not, the IPv6
router builds the Shortest Path Tree (SPT) as well as the shared (RP) tree and produces a (*.G)
record. If both MLDv2 and SSM are enabled, then only the SPT is built to produce a (S,G) record.
To enable SSM on a Brocade device running PIM-SM, enter commands such as the following.
BigIron RX(config)# ipv6 router pim
BigIron RX(config-ipv6-pim-router)# ssm-enable
Syntax: [no] ssm-enable