PurposeCommand or Action
Specifies the IPv6 address family and enters router address family
configuration mode.
address-family ipv6 [ unicast ]
Example:
RP/0/RSP0/CPU0:router(config-isis)#
address-family ipv6 unicast
Step 7
•
This example specifies the unicast IPv6 address family.
(Optional) Configures the link topology for IPv4 when IPv6 is
configured.
single-topology
Example:
RP/0/RSP0/CPU0:router(config-isis-af)#
single-topology
Step 8
•
The single-topology command is valid only in IPv6 submode.
The command instructs IPv6 to use the single topology rather
than the default configuration of a separate topology in the
multitopology mode.
•
See the Single-Topology IPv6 Support, on page 278 for more
information.
Exits router address family configuration mode, and returns the router
to router configuration mode.
exit
Example:
RP/0/RSP0/CPU0:router(config-isis-af)#
exit
Step 9
Enters interface configuration mode.
interface type interface-path-id
Example:
RP/0/RSP0/CPU0:router(config-isis)#
interface GigabitEthernet 0/1/0/3
Step 10
(Optional) Configures the type of adjacency.circuit-type { level-1 | level-1-2 | level-2-only
}
Step 11
•
The default circuit type is the configured system type (configured
through the is-type command).
Example:
RP/0/RSP0/CPU0:router(config-isis-if)#
circuit-type level-1-2
•
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.
address-family { ipv4 | ipv6 } [ unicast |
multicast ]
Step 12
Example:
RP/0/RSP0/CPU0:router(config-isis-if)#
address-family ipv4 unicast
•
This example specifies the unicast IPv4 address family on the
interface.
commit
Step 13
(Optional) Displays information about the IS-IS interface.
show isis [ instance instance-id ] interface [
type interface-path-id ] [ detail ] [ level { 1 | 2
}]
Step 14
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.1.x
290 OL-30423-03
Implementing IS-IS
Configuring Single Topology for IS-IS