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track-default-gateway

system track-default-gateway—For a static route, determine whether the next hop is reachable before adding that route to the device's route table. By default, this function is enabled.

With gateway tracking enabled, the software sends ARP messages every 10 seconds to the next hop of a static route. If the software receives an ARP response, it places the static route into the local route table. After 10 consecutive ARP responses are missed, the static route is removed from the route table. The software continues to periodically send ARP messages, and as soon as it once again receives an ARP responses, the static route is added back to the route table.

vManage Feature Template

For  all Viptela devices:

Configuration ► Templates ► System

Command Hierarchy

system
  track-default-gateway

Options

None

Operational Commands

show ip routes

Example

Have the device determine whether the next hop for a static route is reachable before placing the static route in the local route table:

system
  track-default-gateway

Release Information

Command introduced in Viptela Software Release 15.3.5.​
In Release 15.4, number of retries changed from 3 to 10.

Additional Information

ip route

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