Users Guide

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(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 congure the UP and/or DOWN threshold for the scaled metric of a tracked IPv4 or
IPv6 route.
Determine the UP/DOWN state of a tracked route by the threshold for the current value of the route metric
in the routing table. To provide a common tracking interface for dierent clients, route metrics are scaled in
the range 0 to 255, where 0 is connected and 255 is inaccessible. The scaled metric value communicated to
a client always considers a lower value to have priority over a higher value.
The resulting scaled value is compared against the congured threshold values to determine the state of a
tracked route as follows:
• If the scaled metric for a route entry is less than or equal to the UP threshold, the state of a route is UP.
• If the scaled metric for a route is greater than or equal to the DOWN threshold or the route is not
entered in the routing table, the state of a route is DOWN.
Congure the UP and DOWN thresholds for each tracked route with 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.
The tracking process uses a protocol-specic resolution value to convert the actual metric in the routing
table to a scaled metric in the range 0 to 255. You can congure the resolution value used to scale route
metrics for supported protocols with the track resolution ip route and track resolution
ipv6 route commands.
Related Commands
• track ip route metric threshold – congure object tracking on the threshold of an IPv4 route metric.
• track resolution ip route – congure the protocol-specic resolution value used to scale an IPv4 route
metric.
track interface ip routing
Congure object tracking on the routing status of an IPv4 Layer 3 interface.
Syntax
track object-id interface interface ip routing
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.
interface Enter one of the following values:
• For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
1080
Object Tracking