Purpose
Command or Action
Specifies the IPv4 or IPv6 address family, and enters
address family configuration mode.
address-family
{
ipv4
|
ipv6
} [
unicast
]
Example:
Step 7
RP/0/RP0/CPU0:router(config-isis-if)#
address-family ipv4 unicast
Sets the value of the tag to associate with the advertised
connected route.
tag
tag
Example:
Step 8
RP/0/RP0/CPU0:router(config-isis-if-af)# tag 3
commit
Step 9
Displays tag information. Verify that all tags are present
in the RIB.
show isis
[
ipv4
|
ipv6
|
afi-all
] [
unicast
|
safi-all
]
route
[
detail
]
Example:
Step 10
RP/0/RP0/CPU0:router(config-isis-if-af)# show isis
ipv4 route detail
Setting the Priority for Adding Prefixes to the RIB
This optional task describes how to set the priority (order) for which specified prefixes are added to the RIB.
The prefixes can be chosen using an access list (ACL), prefix list, or by matching a tag value.
SUMMARY STEPS
1.
configure
2.
router isis instance-id
3.
address-family
{
ipv4
|
ipv6
} [
unicast
]
4.
metric-style wide
[
transition
] [
level
{
1
|
2
}]
5.
spf prefix-priority
[
level
{
1
|
2
}] {
critical
|
high
|
medium
} {
access-list-name
|
tag tag
}
6.
commit
DETAILED STEPS
Purpose
Command or Action
configure
Step 1
Enables IS-IS routing for the specified routing process, and
places the router in router configuration mode. In this
example, the IS-IS instance is called isp.
router isis instance-id
Example:
RP/0/RP0/CPU0:router(config)# router isis isp
Step 2
Specifies the IPv4 or IPv6 address family, and enters router
address family configuration mode.
address-family
{
ipv4
|
ipv6
} [
unicast
]
Example:
Step 3
Routing Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
236
Implementing IS-IS
Setting the Priority for Adding Prefixes to the RIB