This command configures the keepalive and hold times that BGP uses for all of its neighbors.
When BGP establishes an adjacency, the neighbors agree to use the minimum hold time configured on either neighbor. BGP sends KEEPALIVE messages at either 1/3 of the negotiated hold time or the configured keepalive interval, whichever is more frequent.
The new values are not applied to adjacencies already in the ESTABLISHED state. A new keepalive or hold time is applied the next time an adjacency is formed.
| Default | The default keepalive time is 30 seconds. The default hold time is 90 seconds. |
| Format | timers bgp keepalive holdtime |
| Mode |
|
| Parameter | Description |
|---|---|
| keepalive | The time, in seconds, between BGP KEEPALIVE packets sent to a neighbor. The range is 0 to 65,535 seconds. Jitter is applied to the keepalive time. |
| holdtime | The time, in seconds, that BGP continues to consider a neighbor to be alive without receiving a BGP KEEPALIVE or UPDATE packet from the neighbor. If no KEEPALIVE is received from a neighbor for longer than the hold time, BGP drops the adjacency. If the hold time is set to 0, then BGP does not enforce a hold time and BGP does not send periodic KEEPALIVE messages. The range is 0 to 65,535 seconds. |
