Set Tracking Delays; Vrrp Object Tracking; Object Tracking Configuration - Dell C9000 Series Networking Configuration Manual

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Dell#configure

Dell(conf)#track 4 ip route 3.1.1.0/24 reachability vrf

The following example configures object tracking on the reachability of an IPv6 route.

Dell(conf)#track 105 ipv6 route 1234::/64 reachability

Dell(conf-track-105)#delay down 5

Dell(conf-track-105)#description Headquarters

Dell(conf-track-105)#end

Dell#show track 105

IPv6 route 1234::/64 reachability

Description: Headquarters

Reachability is Down (route not in route table)

2 changes, last change 00:03:03

Set Tracking Delays

You can configure an optional UP and/or DOWN timer for each tracked object to set the time delay before a

change in the state of a tracked object is communicated to clients. The configured time delay starts when the

state changes from UP to DOWN or the opposite way.

If the state of an object changes back to its former UP/DOWN state before the timer expires, the timer is

cancelled and the client is not notified. If the timer expires and an object's state has changed, a notification is

sent to the client. For example, if the DOWN timer is running when an interface goes down and comes back

up, the DOWN timer is cancelled and the client is not notified of the event.

If you do not configure a delay, a notification is sent when a change in the state of a tracked object is

detected. The time delay in communicating a state change is specified in seconds.

As a client, VRRP can track up to 20 objects (including route entries, and Layer 2 and Layer 3 interfaces) in

addition to the 12 tracked interfaces supported for each VRRP group.

You can assign a unique priority-cost value from 1 to 254 to each tracked VRRP object or group interface. The

priority cost is subtracted from the VRRP group priority if a tracked VRRP object is in a DOWN state. If a VRRP

group router acts as owner-master, the run-time VRRP group priority remains fixed at 255 and changes in the

state of a tracked object have no effect.

In VRRP object tracking, the sum of the priority costs for all tracked objects and interfaces cannot

equal or exceed the priority of the VRRP group.

You can configure three types of object tracking for a client.

Track Layer 2 Interfaces

Object Tracking