Session Persistence with UDP protocols

UDP protocols are not connection oriented, but you will often desire that UDP datagrams in the same session are routed to the same back-end server.

In the Virtual Servers > Edit > Protocol Settings page, the two settings udp_timeout and udp_response_datagrams_expected are used to inform the Virtual Traffic Manager what the UDP session should look like.

The UDP session lasts until the number of response datagrams observed is equal to the setting udp_response_datagrams_expected. For example, if a session completes once the server has sent one datagram to the client, set udp_response_datagrams_expected to "1".

If the session is long-lived, set udp_response_datagrams_expected to "-1". The UDP session times out if no further UDP traffic has been observed within udp_timeout seconds.

You can use Session Persistence of various types (typically IP-based or Universal) with UDP if you want to track sessions for longer periods of time.