Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 687

The default UP threshold is 254. The routing state is UP if the scaled route metric is less than or equal to the UP threshold. The defult DOWN threshold is 255. The routing state is DOWN if the scaled route metric is greater than or equal to the DOWN threshold. 6. (Optional) Display the tracking configuration. EXEC Privilege mode show track object-id Example of IPv4 and IPv 6 Tracking Metric Thresholds The following example configures object tracking on the metric threshold of an IPv4 route. Dell(conf)#track 6 ip route 2.1.1.0/24 metric threshold Dell(conf-track-6)#delay down 20 Dell(conf-track-6)#delay up 20 Dell(conf-track-6)#description track ip route metric Dell(conf-track-6)#threshold metric down 40 Dell(conf-track-6)#threshold metric up 40 Dell(conf-track-6)#exit Dell(conf)#track 10 ip route 3.1.1.0/24 metric threshold vrf vrf1 The following example configures object tracking on the metric threshold of an IPv6 route. Dell(conf)#track 8 ipv6 route 2::/64 metric threshold Dell(conf-track-8)#threshold metric up 30 Dell(conf-track-8)#threshold metric down 40 Track Route Reachability If you configure the reachability of an IP route entry as a tracked object, the UP/DOWN state of the route is determined by the entry of the next-hop address in the ARP cache. A tracked route is considered to be reachable if there is an address resolution protocol (ARP) cache entry for the route's next-hop address. If the next-hop address in the ARP cache ages out for a route tracked for its reachability, an attempt is made to regenerate the ARP cache entry to see if the next-hop address appears before considering the route DOWN. Tracking Route Reachability Use the following commands to configure object tracking on the reachability of an IPv4 or IPv6 route. To remove object tracking, use the no track object-id command. 1. Configure object tracking on the reachability of an IPv4 or IPv6 route. CONFIGURATION mode track object-id {ip route ip-address/prefix-len | ipv6 route ipv6-address/ prefix-len} reachability [vrf vrf-name] Valid object IDs are from 1 to 65535. Enter an IPv4 address in dotted decimal format; valid IPv4 prefix lengths are from / 0 to /32. Enter an IPv6 address in X:X:X:X::X format; valid IPv6 prefix lengths are from / 0 to /128. Object Tracking 687