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Forum Discussion

Raymond_Feng_97's avatar
Raymond_Feng_97
Historic F5 Account
Apr 20, 2005

How to use irules to do SIP outbounding proxy?

Hi, everyone   I am trying to do SIP proxy server loadbalance. By now, we can do loadbalance for inbound SIP request, I mean , from the client to the proxy server , just using SIP persistant....
application delivery
dev
devops
iRules
kapil_49150's avatar
kapil_49150
Icon for Nimbostratus rankNimbostratus
Sep 15, 2009
Thanks Nat for your suggestion.

 

 

That make it work as desired for UDP.

 

 

In SIP transport protocol used could be either UDP or TCP. SIP stack switches transport mode from UDP to TCP when packet size is greater than MTU. Therefore, I have created virtual server for both UDP and TCP in both directions (incoming & outgoing).

 

 

After making custom UDP profile with immediate timeout I see all the packets hittng right iRule at the right time. But when sip stack switches transport mode from UDP to TCP, I observe recurrence of similar behvior in which sip_out_2 is bieng hit in serverside.

 

 

Is there some means to customize TCP profile to achieve the same effect.