Brocade BigIron RX Series Configuration Guide - Manual (Page 1425)

BigIron RX Series Configuration Guide 1347
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IPv6 PIM sparse
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BigIron RX(config-ipv6-pim-router)#sho ipv6 pim rp-map
Static RP and associated group ranges
-------------------------------------
Static RP count: 1
2000::16
Number of group prefixes Learnt from BSR: 1
Group prefix = ff00::/8 # RPs: 3
RP 1: 2000::8 priority=0 age=30
RP 2: 2000::4 priority=0 age=50
RP 3: 2000::16 priority=0 age=20
Syntax: show ipv6 pim rp-set
Updating IPv6 PIM-sparse forwarding entries with new RP configuration
If you make changes to your static RP configuration, the entries in the IPv6 PIM-Sparse multicast
forwarding table continue to use the old RP configuration until they are aged out.
The clear IPv6 pim rp-map command allows you to update the entries in the static multicast
forwarding table immediately after making RP configuration changes. This command is meant to
be used with rp-address command.
To update the entries in an IPv6 PIM sparse static multicast forwarding table with new RP
configuration, enter the following command at the privileged EXEC level of the CLI.
BigIron RX(config)# clear ipv6 pim rp-map
Syntax: clear ipv6 pim rp-map
Embedded Rendezvous Point (RP)
Global deployment of IPv4 Multicast within multiple PIM Sparse domain relies on MSDP to convey
information about the active sources. Since IPv6 provides more address space, the RP address can
be included in the Multicast group address.
NOTE
The IPv6 group address must be part of the FF70::/12 prefix.
Embedded-RP support is enabled by default. You can disable it using the following command:
BigIron RX(config)#no rp-embedded
Syntax: [no] rp-embedded
Changing the Shortest Path Tree (SPT) threshold
In a typical IPv6 PIM Sparse domain, there may be two or more paths from a DR (designated router)
for a multicast source to an IPv6 PIM group receiver.
• Path through the RP – This is the path the device uses the first time it receives traffic for an
IPv6 PIM group. However, the path through the RP may not be the shortest path from the
device to the receiver.