About Gateway Keepalive
The keepalive speed is a global configuration that applies to all Aviatrix gateways. Aviatrix gateways send periodic keepalive messages to the Aviatrix Controller that enables the Controller to determine when a gateway’s state changes to monitor when a gateway is down.
The following table shows how frequently gateways send keepalive messages and how often the Controller processes these messages.
| Speed | Gateway sends keepalive | Down detection |
|---|---|---|
Fast |
every 2 seconds |
every 7 seconds |
Medium |
every 12 seconds |
every 1 minute |
Slow |
every 1 minute |
every 5 minutes |
By default, the keepalive speed is set to Medium.
A gateway is considered to be in the UP state if the Controller receives at least 2 (out of a possible 5) messages from that gateway between two consecutive health checks. For example:
When set to Fast, the gateway down detection time is between 7 seconds and 14 seconds.
When set to Medium, the gateway down detection time is between 1 minute to 2 minutes.