Cisco NCS 5000 Series Manual page 66

Configuration Examples for Configuring Object Tracking
Tracking IP Route Reachability: Example
In this example, traffic arriving from interface service-ipsec1 has its destination in network 7.0.0.0/24. This
tracking procedure follows the state of the routing protocol prefix to signal when there are changes in the
routing table.
track PREFIX1
type route reachability
route ipv4 7.0.0.0/24
!
interface service-ipsec 1
vrf 1
ipv4 address 70.0.0.2 255.255.255.0
profile vrf_1_ipsec
line-protocol track PREFIX1
tunnel source 80.0.0.2
tunnel destination 80.0.0.1
service-location preferred-active 0/2/0
Building a Track Based on a List of Objects: Example
In this example, traffic arriving from interface service-ipsec1 exits through interface GigabitEthernet 0/0/0/3
and interface ATM 0/2/0/0.1. The destination of the traffic is at network 7.0.0.0/24.
If either one of the interfaces or the remote network goes down, the flow of traffic must stop. To do this, we
use a Boolean AND expression.
track C1
type route reachability
route ipv4 3.3.3.3/32
!
!
track C2
type route reachability
route ipv4 1.2.3.4/32
!
!
track C3
type route reachability
route ipv4 10.0.20.2/32
!
!
track C4
type route reachability
route ipv4 10.0.20.0/24
!
!
track OBJ
type list boolean and
object C1
object C2
!
!
track OBJ2
type list boolean or
object C1
object C2
!
System Management Configuration Guide for Cisco NCS 5000 Series Routers, IOS XR Release 6.2.x
56
Implementing Object Tracking