PurposeCommand or Action
detects destinations within its area. Packets containing
destinations outside the area if any, are sent to the
nearest level-1-2 router in the area.
• The level-2-only keyword configures the software to
perform Level 2 (backbone) routing only, the router
only establishes Level 2 adjacencies. It is established
either with other Level 2-only routers or with
level-1-2 routers.
• The level-1-2 keyword configures the software to
perform both Level 1 and Level 2 routing. Both Level
1 and Level 2 adjacencies are established. The router
acts as a border router between the Level 2 backbone
and its Level 1 area.
Configures an IS-IS network entity (NET) for a routing
process.
net net
Example:
Step 4
RP/0/RP0/CPU0:router(config-isis)# net
47.0001.0000.0000.8888.00
Specifies the IPv4 or IPv6 address family, and enters the
interface address family configuration mode.
address-family {ipv4 | ipv6} [unicast | multicast]
Example:
Step 5
RP/0/RP0/CPU0:router(config-isis)# address-family
ipv4 unicast
Configures a router to generate and accept wide link
metrics only.
metric-style wide
Example:
Step 6
RP/0/RP0/CPU0:router(config-isis-af)#metric-style
wide
Exits router address family configuration mode, and resets
the router to router configuration mode.
exit
Example:
Step 7
RP/0/RP0/CPU0:router(config-isis-af)# exit
Creates and names a new Ethernet link bundle.
interface Bundle-Ether bundle-id
Example:
Step 8
RP/0/RP0/CPU0:router(config-isis)# interface
Bundle-Ether 9
Specifies the IPv4 or IPv6 address family, and enters
interface address family configuration mode.
address-family {ipv4 | ipv6} [unicast | multicast]
Example:
Step 9
RP/0/RP0/CPU0:router(config-isis-if)#
address-family ipv4 unicast
Enables per-prefix FRR.fast-reroute per-prefix
Example:
Step 10
Routing Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
349
Implementing IP Fast Reroute Loop-Free Alternate
Configuring Fast Reroute Support
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