PurposeCommand or Action
Enables IS-IS routing for the specified routing instance, and places the
router in router configuration mode.
router isis instance-id
Example:
RP/0/RSP0/CPU0:router(config)# router
isis isp
Step 5
•
By default, all IS-IS instances are Level 1 and Level 2. You can
change the level of routing to be performed by a particular routing
instance by using the is-type command.
Configures NETs for the routing instance.
net network-entity-title
Step 6
Example:
RP/0/RSP0/CPU0:router(config-isis)# net
47.0004.004d.0001.0001.0c11.1110.00
•
Specify a NET for each routing instance if you are configuring
multi-instance IS-IS. You can specify a name for a NET and for
an address.
•
This example configures a router with area ID 47.0004.004d.0001
and system ID 0001.0c11.1110.00.
•
To specify more than one area address, specify additional NETs.
Although the area address portion of the NET differs, the system
ID portion of the NET must match exactly for all of the configured
items.
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 346 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
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
358
Implementing IS-IS
Configuring Single Topology for IS-IS