CLI Guide

When you configure the threshold of an IPv6 route metric as a tracked object, the UP/DOWN state of
the tracked route is also determined by the current metric for the route 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 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 configured 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.
You configure 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 notification
of a change in the state of a tracked object is sent when a metric value crosses a configured threshold.
Related
Commands
● show track ipv6 route – display information about tracked IPv6 routes, including configuration, current
state, and clients which track the route.
● threshold metric – configure the metric threshold used to determine the UP and/or DOWN state of a
tracked route.
● track resolution ipv6 route – configure the protocol-specific resolution value used to scale an IPv6
route metric.
track ipv6 route reachability
Configure 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/
prefix-len
Enter an IPv6 address in X:X:X:X::X format. The valid IPv6 prefix lengths are
from /0 to / 128.
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 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.
Object Tracking 1023