Dell Force10 S25N-S50N FTOS Command Line Reference Guide FTOS 8.4.2.7 E-Series - Page 1003

track ipv6 route reachability c e s Configure object tracking on the reachability of an IPv6 route. Syntax track object-id ipv6 route ip-address/prefix-len reachability To return to the default setting, enter no track object-id. Parameters object-id ipv6-address/ prefix-len Enter the ID number of the tracked object. Range: 1 to 65535. Enter an IPv6 address in X:X:X:X::X format. Valid IPv6 prefix lengths are from /0 to / 128. Defaults None Command Modes CONFIGURATION Command History Related Commands Version 8.4.1.0 Introduced show track ipv6 route track ip route reachability Display information about tracked IPv6 routes, including configuration, current state, and clients which track the route. Configure object tracking on the reachability of an IPv4 route. Usage Use this command to create an object that tracks the reachability of an IPv6 route. In order for a route's Information reachability to be tracked, the route must appear as an entry in the routing table. A tracked route is considered to match an entry in the routing table only if the exact IPv6 address and prefix length match a table entry. For example, when configured as a tracked route, 3333:100:200:300:400::/80 does not match routing table entry 3333:100:200:300::/64. If no route-table entry has the exact IPv6 address and prefix length, the tracked route is considered to be DOWN. When you configure IPv6 route reachability as a tracked object, the UP/DOWN state of the tracked route is also 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 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. Object Tracking | 1003