Tracking Ip Route Reachability - Cisco NCS 5000 Series Manual

Tracking IP Route Reachability

Tracking IP Route Reachability
When a host or a network goes down on a remote site, routing protocols notify the router and the routing table
is updated accordingly. The routing process is configured to notify the tracking process when the route state
changes due to a routing update.
A tracked object is considered up when a routing table entry exists for the route and the route is accessible.
SUMMARY STEPS
1. configure
2. track track-name
3. type route reachability
4. Use one of the following commands:
5. exit
6. (Optional) delay {up seconds|down seconds}
7. commit
DETAILED STEPS
Command or Action
Step 1 configure
Step 2
track track-name
Example:
RP/0/RP0/CPU0:router(config)# track track1
Step 3 type route reachability
Example:
RP/0/RP0/CPU0:router(config-track)# type route
reachability vrf internet
Step 4 Use one of the following commands:
• vrf vrf-table-name
• route ipv4 IP-prefix/mask
Example:
RP/0/RP0/CPU0:router(config-track-route)# vrf
vrf-table-4
System Management Configuration Guide for Cisco NCS 5000 Series Routers, IOS XR Release 6.2.x
48
• vrf vrf-table-name
• route ipv4 IP-prefix/mask
Purpose
Enters track configuration mode.
• track-name—Specifies a name for the object to be
tracked.
Configures the routing process to notify the tracking process
when the state of the route changes due to a routing update.
Configures the type of IP route to be tracked, which can
consist of either of the following, depending on your router
type:
• vrf-table-name—A VRF table name.
• IP-prefix/mask—An IP prefix consisting of the network
and subnet mask (for example, 10.56.8.10/16).
Implementing Object Tracking