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Route selection precedence for multicast – Brocade Multi-Service IronWare Multicast Configuration Guide (Supporting R05.6.00) User Manual

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Multi-Service IronWare Multicast Configuration Guide

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IPv6 PIM Sparse

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Route selection precedence for multicast

The route-precedence command allows the user to specify a precedence table that dictates how
routes are selected for multicast.

NOTE

PIM must be enabled at the global level.

Configuring the route precedence by specifying the route types

The route-precedence {mc-non-default mc-default uc-non-default uc-default none} command
allows you to control the selection of routes based on the route types. There are four different types
of routes:

Non-default route from the mRTM

Default route from the mRTM

Non-default route from the uRTM

Default route from the uRTM

Using the route-precedence command, you may specify an option for all of the precedence levels.

To specify a non-default route from the mRTM, then a non-default route from the uRTM, then a
default route from the mRTM, and then a default route from the uRTM, enter commands such as
the following.

Brocade(config)# ipv6 router pim

Brocade(config-ipv6-pim-router)# route-precedence mc-non-default uc-non-default

mc-default uc-default

The none option can be used to fill up the precedence table in order to ignore certain types of
routes. To use the unicast default route for multicast, enter commands such as the following.

Brocade(config)# ipv6 router pim

Brocade(config-ipv6-pim-router)# route-precedence mc-non-default mc-default

uc-non-default none

To specify a non-default route from the mRTM, then a non-default route from the uRTM, then a
default route from the mRTM, and then a default route from the uRTM for a specified VRF, enter
commands such as the following.

Brocade(config)# ipv6 router pim vrf blue

Brocade(config-ipv6-pim-router-vrf-blue)# route-precedence mc-non-default

uc-non-default mc-default uc-default

The none option can be used to fill up the precedence table in order to ignore certain types of
routes. To use the unicast default route for multicast for a specified VRF, enter commands such as
the following.

Brocade(config)# ipv6 router pim vrf blue

Brocade(config-ipv6-pim-router-vrf-blue)# route-precedence mc-non-default

mc-default uc-non-default none

Syntax: [no] route-precedence {mc-non-default |mc-default |uc-non-default |uc-default |none}

The default value is the route-precedence mc-non-default mc-default uc-non-default uc-default
command.

Use the mc-non-default parameter to specify a multicast non-default route.

Use the mc-default parameter to specify a multicast default route.

Use the uc-non-default parameter to specify a unicast non-default route.