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Configuring IPv6 PIM Configuring PIM
page 7-40 OmniSwitch 6800/6850/9000 Advanced Routing Configuration Guide December 2007
disabled. For more information on static RP status and configuration, refer to “Configuring Static RP
Groups” below.
A C-RP periodically sends out messages, known as C-RP advertisements. When a BSR receives one of
these advertisements, the associated C-RP is considered reachable (if a valid route to the network exists).
The BSR then periodically sends an updated list of reachable C-RPs to all neighboring routers in the form
of a Bootstrap message.
Note. The list of reachable C-RPs is also referred to as an RP set. To view the current RP set, use the
show ipv6 pim group-map command. For example:
-> show ipv6 pim group-map
Origin Group Address/Pref Length RP Address Mode Precedence
---------+---------------------------+-------------+-----+-----------
BSR ff00::/8 3000::11 asm 192
BSR ff00::/8 4000::7 asm 192
SSM ff33::/32 ssm
For more information about these displays, see the “PIM Commands” chapter in the OmniSwitch CLI
Reference Guide.
Note. There is only one BSR per IPv6 PIM-SM domain. This allows all IPv6 PIM-SM routers in the IPv6
PIM-SM domain to view the same list of reachable C-RPs.
Configuring Static RP Groups for IPv6 PIM
A static RP group is used in the group-to-RP mapping algorithm. To specify a static RP group, use the
ipv6 pim static-rp command. Be sure to enter a multicast group address, a corresponding group mask, and
a 128-bit IPv6 address for the static RP in the command line. For example:
-> ipv6 pim static-rp ff0e::1234/128 2000::1 priority 10
This command entry maps all multicast groups ff0e::1234/128 to the static RP 2000::1 and specifies the
priority value to be used for the static RP configuration as 10. This priority value provides fine control
over which configuration is overridden by this static configuration. If the priority option has been defined,
a value of 65535 can be used to unset the priority
You can also specify whether or not this static RP configuration to override the dynamically learned RP
information for the specified group using the override parameter. As specifying the priority value obso-
letes the override option, you can use either the priority or override parameter only.
Use the no form of this command to delete a static RP configuration.
-> no ipv6 pim static-rp ff0e::1234/128 2000::1
The IPv6 PIM-Source-Specific Multicast (SSM) mode for the default SSM address range (FF3x::/32)
reserved by the Internet Assigned Numbers Authority is not enabled automatically and must be config-
ured manually to support SSM. You can also map additional IPv6 multicast address ranges for the SSM
group. However, the IPv6 multicast groups in the reserved address range can be mapped only to the SSM
mode.