Configuring Multitopology Routing; Restrictions For Configuring Multitopology Routing - Cisco ASR 9000 Series Routing Configuration Manual

Implementing IS-IS
Command or Action
Step 11
circuit-type { level-1 | level-1-2 | level-2-only
}
Example:
RP/0/RSP0/CPU0:router(config-isis-if)#
circuit-type level-1-2
Step 12 address-family { ipv4 | ipv6 } [ unicast |
multicast ]
Example:
RP/0/RSP0/CPU0:router(config-isis-if)#
address-family ipv4 unicast
Step 13 commit
Step 14 show isis [ instance instance-id ] interface [
type interface-path-id ] [ detail ] [ level { 1 | 2
}]
Example:
RP/0/RSP0/CPU0:router# show isis
interface GigabitEthernet 0/1/0/1
Step 15 show isis [ instance instance-id ] topology
[ systemid system-id ] [ level { 1 | 2 }] [
summary ]
Example:
RP/0/RSP0/CPU0:router# show isis topology

Configuring Multitopology Routing

This set of procedures configures multitopology routing, which is used by PIM for reverse-path forwarding
(RPF) path selection.

Restrictions for Configuring Multitopology Routing

• Only the default VRF is currently supported in a multitopology solution.
• Only protocol-independent multicast (PIM) and intermediate system-intermediate system (IS-IS) routing
protocols are currently supported.
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
Purpose
(Optional) Configures the type of adjacency.
• The default circuit type is the configured system type (configured
through the is-type command).
• Typically, the circuit type must be configured when the router is
configured as only level-1-2 and you want to constrain an
interface to form only level-1 or level-2-only adjacencies.
Specifies the IPv4 or IPv6 address family, and enters interface address
family configuration mode.
• This example specifies the unicast IPv4 address family on the
interface.
(Optional) Displays information about the IS-IS interface.
(Optional) Displays a list of connected routers in all areas.
Configuring Multitopology Routing
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