Administrator Guide

You congure the UP and DOWN thresholds for each tracked IPv6 route by using the threshold metric
command. The default UP threshold is 254; the default DOWN threshold is 255. The notication of a change in
the state of a tracked object is sent when a metric value crosses a congured threshold.
Related Commands
• show track ipv6 route – display information about tracked IPv6 routes, including conguration, current state,
and clients which track the route.
• threshold metric – congure the metric threshold used to determine the UP and/or DOWN state of a tracked
route.
• track resolution ipv6 route – congure the protocol-specic resolution value used to scale an IPv6 route metric.
track ipv6 route reachability
Congure 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, use the no track object-id command.
Parameters
object-id Enter the ID number of the tracked object. The range is 1 to 500.
ipv6-address/
prex-len
Enter an IPv6 address in X:X:X:X::X format. The valid IPv6 prex lengths are from /0 to /
128.
Defaults None
Command Modes CONFIGURATION
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(1.0) Introduced on the Z9100-ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
8.3.12.0 Introduced on the S4810.
8.4.1.0 Introduced.
Usage Information
Use this command to create an object that tracks the reachability of an IPv6 route. In order for a route’s
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 prex length
match a table entry. For example, when congured 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 prex length, the
tracked route is considered to be DOWN.
When you congure 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.
1066 Object Tracking