Users Guide

2. (Optional) Enter interface object tracking on the line-protocol state of an L2 interface in OBJECT TRACKING mode.
interface interface line-protocol
3. (Optional) Configure the time delay used before communicating a change to the status of a tracked interface in OBJECT
TRACKING mode, from 0 to 80 seconds; default 0.
delay [up seconds] [down seconds]
4. (Optional) View the tracked object information in EXEC mode.
show track object-id
5. (Optional) View all interface object information in EXEC mode.
show track interface
6. (Optional) View all IPv4 or IPv6 next-hop object information in EXEC mode.
show track [ip | ipv6]
7. (Optional) View brief status of object information in EXEC mode.
show track brief
Configure object tracking
OS10(config)# track 1
OS10(conf-track-1)# interface ethernet 1/1/1 line-protocol
OS10(conf-track-1)# delay up 20
OS10(conf-track-1)# delay down 10
OS10(conf-track-1)# do show track 1
Interface ethernet1/1/1 line-protocol
Line protocol is UP
1 changes, Last change 2017-04-26T06:41:36Z
Host tracking
If you configure an IP host as a tracked object, the entry or next-hop address in the ARP cache determines the Up or Down
state of the route.
A tracked host is reachable if there is an ARP cache entry for the router's next-hop address. An attempt to regenerate the ARP
cache entry occurs if the next-hop address appears before considering the route Down.
1. Configure object tracking in CONFIGURATION mode.
track object-id
2. Enter the host IP address for reachability of an IPv4 or IPv6 route in OBJECT TRACKING mode.
[ip | ipv6] host-ip-address reachability
3. Configure the time delay used before communicating a change in the status of a tracked route in OBJECT TRACKING mode.
delay [up seconds] [down seconds]
4. Track the host by checking the reachability periodically in OBJECT TRACKING mode.
reachability-refresh interval
5. View the tracking configuration and the tracked object status in EXEC mode.
show track object-id
Configure IPv4 host tracking
OS10 (conf-track-1)# track 2
OS10 (conf-track-2)# ip 1.1.1.1 reachability
Layer 3
987