Send document comments to nexus7k-docfeedback@cisco.com.
9-19
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
OL-20002-02
Chapter 9 Configuring IS-IS
Configuring IS-IS
The following example shows how to configure an IPv4 unicast summary address for IS-IS:
switch# config t
switch(config)# router isis Enterprise
switch(config-router)# address-family ipv4 unicast
switch(config-router-af)# summary-address 192.0.2.0/24 level-2
switch(config-router-af)# copy running-config startup-config
Configuring Redistribution
You can configure IS-IS to accept routing information from another routing protocol and redistribute that
information through the IS-IS network. You can optionally assign a default route for redistributed routes.
BEFORE YOU BEGIN
Ensure that you have enabled the IS-IS feature (see the “Enabling the IS-IS Feature” section on
page 9-7).
Ensure that you are in the correct VDC (or use the switchto vdc command).
SUMMARY STEPS
1. config t
2. router isis instance-tag
3. address-family ipv4 unicast
4. redistribute {bgp as | direct |{eigrp | isis | ospf | ospfv3 | rip} instance-tag | static} route-map
map-name
5. default-information originate [always] [route-map map-name]
6. distribute {level-1 | level-2} into {level-1 | level-2} {route-map route-map | all}
7. show isis [vrf vrf-name] ip route ip-prefix [detail | longer-prefixes [summary | detail]]
8. copy running-config startup-config
DETAILED STEPS
Command Purpose
Step 1
config t
Example:
switch# config t
switch(config)#
Enters configuration mode.
Step 2
router isis
instance-tag
Example:
switch(config)# router isis Enterprise
switch(config-router)#
Creates a new IS-IS instance with the configured
instance tag.