I recently came across a scenario that required load balancing to an upstream SBC. This is easily accomplished by building a Session-Agent Group and setting the appropriate strategy, however I wanted to try a different path. I found that load balancing on the Acme Packet Net-Net series with SRV records is easy, if you follow a few basic steps.

1. Under the session-agent config, leave the IP address blank.
2. Set the port to “0”.
3. Add ‘dns-load-balance’ to the options under the SA.

session-router session-agent
    hostname enter.dns.name.here
    ip-address
    port 0
    state enabled
    options dns-load-balance