Administrator Guide

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 if the next-hop address appears before considering the route DOWN.
Related
Commands
• show track ipv6 route – display information about tracked IPv6 routes, including configuration, current state,
and clients which track the route.
• track ipv6 route reachability – configure object tracking on the reachability of an IPv4 route.
track resolution ipv6 route
Configure the protocol-specific resolution value used to scale an IPv6 route metric.
Syntax
track resolution ipv6 route {isis resolution-value | ospf resolution-value}
To return to the default setting, use the no track object-id command.
Parameters
object-id Enter the ID number of the tracked object. Use the range to 1 to 500.
isis resolution-
value
Enter the resolution used to convert the metric in the routing table for ISIS routes to a
scaled metric.
ospf resolution-
value
Enter the resolution used to convert the metric in the routing table for OSPF routes to a
scaled metric.
Defaults None
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC
Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100-ON.
9.8(2.0) Introduced on the S3100 series.
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 configure the protocol-specific resolution value that converts the actual metric of an IPv6
route in the routing table to a scaled metric in the range 0 to 255.
The UP/DOWN state of a tracked IPv6 route is determined by the user-configurable threshold (the threshold
metric command) for a route’s metric in the routing table. To provide a common tracking interface for different
clients, route metrics are scaled in the range 0 to 255, where 0 is connected and 255 is inaccessible.
The protocol-specific resolution value calculates the scaled metric by dividing a route's cost by the resolution
value set for the route protocol:
1074 Object Tracking