Cisco NCS 5500 Series Configuration Manuals page 20

Configure Single Topology for IS-IS
Step 4
exit
Example:
RP/0/RP0/CPU0:router(config-if)# exit
Exits interface configuration mode, and returns the router to mode.
Step 5
router isis instance-id
Example:
RP/0/RP0/CPU0:router(config)# router isis isp
Enables IS-IS routing for the specified routing instance, and places the router in router configuration mode.
• 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.
Step 6 net network-entity-title
Example:
RP/0/RP0/CPU0:router(config-isis)# net 47.0004.004d.0001.0001.0c11.1110.00
Configures NETs for the routing instance.
• 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.
Step 7
address-family ipv6 [ unicast ]
Example:
RP/0/RP0/CPU0:router(config-isis)# address-family ipv6 unicast
Specifies the IPv6 address family and enters router address family configuration mode.
• This example specifies the unicast IPv6 address family.
Step 8
single-topology
Example:
RP/0/RP0/CPU0:router(config-isis-af)# single-topology
(Optional) Configures the link topology for IPv4 when IPv6 is configured.
• 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.
Step 9
exit
Example:
Routing Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.3.x
8
Implementing IS-IS