Reference Guide

A tracked IPv4 route is considered to match an entry in the routing table only if the
exact IPv4 address and prefix length match a table entry. For example, when
configured as a tracked route, 10.0.0.0/24 does not match the routing table entry
10.0.0.0/8. If no route-table entry has the exact IPv4 address and prefix length, the
status of the tracked route is considered to be DOWN.
When you configure IPv4 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 address resolution protocol (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 if the next-hop
address appears before considering the route DOWN.
Related
Commands
• show track – displays information about tracked objects, including
configuration, current state, and clients which track the object.
• track ip route metric threshold – configures object tracking on the threshold of
an IPv4 route metric.
track resolution ip route
Configure the protocol-specific resolution value used to scale an IPv4 route metric.
C9000 Series
Syntax
track resolution ip 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. The range is
from 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,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
1380
Object Tracking