Is there any way to bypass SIP-Response?
Load on SIP-Loadbalancer gets increased when response traverse through it.

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Iñaki Baz 
Castillo
Sent: Wednesday, October 08, 2008 1:36 PM
Cc: [email protected]; [EMAIL PROTECTED]
Subject: Re: [Sip] Should SIP LoadBalancer add VIA header?

2008/10/8 Karthikeyan Gopal <[EMAIL PROTECTED]>:
> Hi All,
>
>   My Query:
>
>      1. SIP-Load Balancer should add VIA header?

A SIP load balander is in fact a SIP proxy (generally in stateless),
so it must add's a Via header.


>      2. SIP Response should traverse SIP-Loadbalancer or the SIP-Server can
> send it directly to respective SIP-Client.

The resopnse should traverse the load balancer. This is by SIP
definition. Imagine two cases:

1) Load balancer ---> SIP UDP ---> UAS
In this case the UAS would reply to the Via sent-by in case it's equal
to the load balancer IP address. In case the Via sent-by added by the
load balancer is a hostname then the UAS would add
"received=REAL_SOURCE_IP_OF_LOAD_BALANCER" to Via and sent replies
there,

2) Load balancer ---> SIP TCP ---> UAS
By definition a UAS msut reply using the incoming TCP connection.





-- 
Iñaki Baz Castillo
<[EMAIL PROTECTED]>
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