Service Manual

If you do not congure a delay, a notication is sent immediately as soon as a change in the state of a tracked object is detected. The
time delay in communicating a state change is specied in seconds.
VRRP Object Tracking
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 xed at 255 and changes in the state of a tracked object have no eect.
NOTE: 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.
Object Tracking Conguration
You can congure three types of object tracking for a client.
• Track Layer 2 Interfaces
• Track Layer 3 Interfaces
• Track an IPv4/IPv6 Route
For a complete listing of all commands related to object tracking, refer to the Dell Networking OS Command Line Interface
Reference Guide.
Tracking a Layer 2 Interface
You can create an object that tracks the line-protocol state of a Layer 2 interface and monitors its operational status (UP or DOWN).
You can track the status of any of the following Layer 2 interfaces:
• 1 Gigabit Ethernet: Enter gigabitethernet slot/port in the track interface interface command (refer to Step
1).
• 10 Gigabit Ethernet: Enter tengigabitethernet slot/port.
• Port channel: Enter port-channel number, where valid port-channel numbers are:
– For the C-Series and S-Series, from 1 to 128.
– For the E-Series, from 1 to 255 (TeraScale and ExaScale)
• SONET: Enter sonet slot/port.
• VLAN: Enter vlan vlan-id, where valid VLAN IDs are from 1 to 4094
A line-protocol object only tracks the link-level (UP/DOWN) status of a specied interface. When the link-level status goes down,
the tracked object status is considered to be DOWN; if the link-level status is up, the tracked object status is considered to be UP.
To remove object tracking on a Layer 2 interface, use the no track object-id command.
To congure object tracking on the status of a Layer 2 interface, use the following commands.
1. Congure object tracking on the line-protocol state of a Layer 2 interface.
CONFIGURATION mode
track object-id interface interface line-protocol
Valid object IDs are from 1 to 65535.
2. (Optional) Congure the time delay used before communicating a change in the status of a tracked interface.
OBJECT TRACKING mode
delay {[up seconds] [down seconds]}
Object Tracking
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