Cisco IE-4000 Software Configuration Manual page 878

Configuring IP Unicast Routing
Configuring ISO CLNS Routing
DETAILED STEPS
Command
1. configure terminal
2. clns routing
3. router isis [area tag]
4. net network-entity-title
5. is-type {level-1 | level-1-2 |
level-2-only}
6. exit
7. interface interface-id
8. no shutdown
9. ip router isis [area tag]
10. clns router isis [area tag]
11. ip address ip-address-mask
12. end
13. show isis [area tag] database
detail
14. copy running-config
startup-config
To disable IS-IS routing, use the no router isis area-tag router configuration command.
EXAMPLE
This example shows how to configure three routers to run conventional IS-IS as an IP routing protocol. In conventional
IS-IS, all routers act as Level 1 and Level 2 routers (by default).
Purpose
Enter global configuration mode.
Enable ISO connectionless routing on the switch.
Enable the IS-IS routing for the specified routing process and
enter IS-IS routing configuration mode.
(Optional) Use the area tag argument to identify the area to which
the IS-IS router is assigned. You must enter a value if you are
configuring multiple IS-IS areas.
The first IS-IS instance configured is Level 1-2 by default. Later
instances are automatically Level 1. You can change the level of
routing by using the is-type global configuration command.
Configure the NETs for the routing process. If you are configuring
multiarea IS-IS, specify a NET for each routing process. You can
specify a name for a NET and for an address.
(Optional) You can configure the router to act as a Level 1 (station)
router, a Level 2 (area) router for multi-area routing, or both (the
default):

level-1—act as a station router only

level-1-2—act as both a station router and an area router

level 2—act as an area router only
Return to global configuration mode.
Specify an interface to route IS-IS, and enter interface
configuration mode. If the interface is not already configured as a
Layer 3 interface, enter the no switchport command to put it into
Layer 3 mode.
Enable the interface if necessary. By default, UNIs and ENIs are
disabled and NNIs are enabled.
Configure an IS-IS routing process for ISO CLNS on the interface
and attach an area designator to the routing process.
Enable ISO CLNS on the interface.
Define the IP address for the interface. An IP address is required
on all interfaces in an area enabled for IS-IS if any one interface is
configured for IS-IS routing.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
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