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Implementing IS-IS on Cisco IOS XR Software
How to Implement IS-IS on Cisco IOS XR Software
RC-96
Cisco IOS XR Routing Configuration Guide
Step 4
exit
Example:
RP/0/RP0/CPU0:router(config-if)# exit
Exits interface configuration mode, and returns the router to
global configuration 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 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:
RP0/0/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.
• See the “Single-Topology IPv6 Support” section on
page RC-87 for more information.
Step 9
exit
Example:
RP/0/RP0/CPU0:router(config-isis-af)# exit
Exits router address family configuration mode, and returns
the router to router configuration mode.
Step 10
interface
type instance
Example:
RP/0/RP0/CPU0:router(config-isis)# interface
POS 0/1/0/3
Enters interface configuration mode.
Command or Action Purpose