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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
Defaults
None
Command Modes
CONFIGURATION
Command
Version 8.4.1.0
History
Related
show track ipv6
Commands
route
track ip route
reachability
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.
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.
Introduced
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.
Object Tracking | 1003
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