CLI Guide

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.
ip-address/
prefix-len
Enter an IPv4 address in dotted decimal format. The valid
IPv4 prefix lengths are from /0 to /32.
vrf vrf-name (Optional) E-Series only: You can configure a VPN routing
and forwarding (VRF) instance to specify the virtual routing
table to which the tracked route belongs.
Defaults None
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms,
see the relevant Dell Networking OS Command Line Reference Guide.
Version Description
9.8(2.0) Introduced on the S3100 series.
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 IPv4 route.
In order for a route’s reachability to be tracked, the route must appear as an entry
in the routing table.
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 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.
Object Tracking
1181