Connectivity Guide

Object tracking manager
OTM allows you to track the link status of Layer 2 (L2) interfaces, and the reachability of IPv4 and IPv6 hosts. You can increase
the availability of the network and shorten recovery time if an object state goes Down.
Object tracking monitors the status of tracked objects and communicates any changes made to interested client applications.
OTM client applications are virtual router redundancy protocol (VRRP) and policy-based routing (PBR). Each tracked object has
a unique identifying number that clients use to configure the action to take when a tracked object changes state. You can also
optionally specify a time delay before changes in a tracked object's state report to a client application.
VRRP subscribes to a track object which tracks the interface line protocol state. It uses the tracked object status to determine
the priority of the VRRP router in a VRRP group. If a tracked state or interface goes down, VRRP updates the priority based on
how you configure the new priority for the tracked state. When the tracked state comes up, VRRP restores the original priority
for the virtual router group.
Figure 7. Object tracking
Interface tracking
You can create an object that tracks the line-protocol state of an L2 interface, and monitors its operational up or down status.
You can configure up to 500 objects. Each object is assigned a unique ID.
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Layer 3