[SR-Users] Max-Forwards severly decreased when invite is relayed

[Daniel-Constantin Mierla]

Hello,

you have to adjust the max_limit parameter:

- http://kamailio.org/docs/modules/stable/modules/maxfwd.html#idp2652072

Cheers,
Daniel

On 09/01/14 09:33, Grant Bagdasarian wrote:
>
> Hello,
>
> Using Kamailio 4.1.
>
> I’m having some problems with the Max-Forwards header being 
> decremented by almost 50 when Kamailio relays the INVITE to the next hop.
>
> The INVITE is received by Kamailio with the value of 65, but when sent 
> to the next hop it has the value of 16.
>
> I’m not altering the max-forwards header value in any way in the 
> config script. At least not explicitly.
>
> Are there any known constructs which indirectly affect the 
> Max-Forwards header?
>
> 10.0.0.16 is the Kamailio server.
>
> U 10.0.0.10:5060 -> 10.0.0.16:5060
>
> INVITE sip:3110123456 at 10.0.0.16:5060 SIP/2.0.
>
> Via: SIP/2.0/UDP 10.0.0.10;rport;branch=z9hG4bKeg5g6U4Dc5HeS.
>
> Max-Forwards: 65.
>
> From: "31765123456" <sip:31765123456 at 10.0.0.10>;tag=9Z7avj87Bc2gm.
>
> To: <sip:3110123456 at 10.0.0.16:5060>.
>
> Call-ID: e089c971-f3a8-1231-c2bb-000c2941b070.
>
> CSeq: 54291565 INVITE.
>
> Contact: <sip:mod_sofia at 10.0.0.10:5060>.
>
> User-Agent: CM Carrier SBC.
>
> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, NOTIFY.
>
> Supported: timer, precondition, path, replaces.
>
> Allow-Events: talk, hold, conference, refer.
>
> Content-Type: application/sdp.
>
> Content-Disposition: session.
>
> Content-Length: 205.
>
> U 10.0.0.16:5060 -> 10.0.0.31:5060
>
> INVITE sip:3110123456 at 10.0.0.25:5060 SIP/2.0.
>
> Record-Route: <sip:10.0.0.16;lr=on>.
>
> Via: SIP/2.0/UDP 
> 10.0.0.16;branch=z9hG4bKe501.5459c149e5fa2c6c723149661017aa3d.0.
>
> Via: SIP/2.0/UDP 10.0.0.10;rport=5060;branch=z9hG4bKeg5g6U4Dc5HeS.
>
> Max-Forwards: 16.
>
> From: "31765123456" <sip:31765123456 at 10.0.0.10>;tag=9Z7avj87Bc2gm.
>
> To: <sip:3110123456 at 10.0.0.16:5060>.
>
> Call-ID: e089c971-f3a8-1231-c2bb-000c2941b070.
>
> CSeq: 54291565 INVITE.
>
> Contact: <sip:mod_sofia at 10.0.0.10:5060>.
>
> User-Agent: CM Carrier SBC.
>
> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, NOTIFY.
>
> Supported: timer, precondition, path, replaces.
>
> Allow-Events: talk, hold, conference, refer.
>
> Content-Type: application/sdp.
>
> Content-Disposition: session.
>
> Content-Length: 205.
>
>
>
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-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda

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