The behaviour of SipX is not unambiguous with regard to rport. I have several Bria's with rport enabled that work OK in an HA setup. Then I have a few that need rport disabled for some reason.
rport is not provisioned at the moment, will have a look at it to add it to the provisioning. From: pscheep...@epo.org To: Discussion list for users of sipXecs software <sipx-users@list.sipfoundry.org> Date: 07-02-2011 17:44 Subject: Re: [sipx-users] Problems with HA-setup, UDP and TCP ports mixed up, only 50% of calls come through Sent by: sipx-users-boun...@list.sipfoundry.org Made myself floating again..... rport was enabled on Bria by accident. Disabled it and now it seems to be OK again.............. Still weird that this happened. rport was invented for UDP, not for TCP, and I cant really find in the RFC http://www.faqs.org/rfcs/rfc3581.html what the behaviour should be when using TCP. If someone wants to shine a light on this, much appreciated. Paul From: pscheep...@epo.org To: Discussion list for users of sipXecs software <sipx-users@list.sipfoundry.org> Date: 07-02-2011 17:34 Subject: Re: [sipx-users] Problems with HA-setup, UDP and TCP ports mixed up, only 50% of calls come through Sent by: sipx-users-boun...@list.sipfoundry.org Blub Blub Below the trace of my Bria provisioning itself from server A, and then telling server A it wants to use port 30980 (see packet 23). In packet 32 we see server A contacting Bria on port 30980, that's OK. In packet 40 we see server B's attempt to connect to Bria on port 10198, wrong port, no connection, call fails, bad luck, need help. Paul From: pscheep...@epo.org To: Discussion list for users of sipXecs software <sipx-users@list.sipfoundry.org> Date: 07-02-2011 14:00 Subject: Re: [sipx-users] Problems with HA-setup, UDP and TCP ports mixed up, only 50% of calls come through Sent by: sipx-users-boun...@list.sipfoundry.org And for comparison a trace of a Bria that has no problems, look at the ports being used. Working Case: Proto Client Server A Server B 10.22.3.34 10.31.48.25 10.32.48.25 UDP 30004 5060 TCP 1232 5060 TCP 30004 5060 50% Case: Proto Client Server A Server B 10.3.203.150 10.31.48.25 10.32.48.25 UDP 30300 5060 TCP 1312 5060 TCP 1312 60618 (Syn from Server B to A, RST-ed by A) The UDP port was missing from the first trace, so I made a separate trace to show the UDP port. Paul From: pscheep...@epo.org To: Discussion list for users of sipXecs software <sipx-users@list.sipfoundry.org> Date: 07-02-2011 12:35 Subject: Re: [sipx-users] Problems with HA-setup, UDP and TCP ports mixed up, only 50% of calls come through Sent by: sipx-users-boun...@list.sipfoundry.org Sorry, some extra info: 10.1.248.31 is the GW (patton). The Patton doesn't like to use the same port (5060) to 2 different SipX clusters. So I configured it to use port 5061 as source port for my second SipX HA-pair. See part of the Patton config below: context sip-gateway gssipx02 interface TH-sip bind interface LAN context router port 5060 context sip-gateway gssipx02 no shutdown context sip-gateway mssipx02 interface MN-sip bind interface LAN context router port 5061 10.31.48.25 is server A and 10.32.48.25 is server B 10.3.203.150 is the PC with Bria. I think things start to go wrong in packet 23, that Syn should have gone to port 30300 (the UDP port used by Bria to server A, port 5060, see capture A) and not to 1312 (the TCP port used by Bria towards server A, port 5060, again, see capture A). Paul From: Tony Graziano <tgrazi...@myitdepartment.net> To: Discussion list for users of sipXecs software <sipx-users@list.sipfoundry.org> Date: 07-02-2011 11:59 Subject: Re: [sipx-users] Problems with HA-setup, UDP and TCP ports mixed up, only 50% of calls come through Sent by: sipx-users-boun...@list.sipfoundry.org its opening a tls connection (port 5061)? frame 21 (capture b) shows the source port for the invite to come from sipx on port 5061, and i (also) don't understand why it would do that. On Mon, Feb 7, 2011 at 5:34 AM, <pscheep...@epo.org> wrote: Maybe someone can look at the traces attached. The trace ServerA.pcap is taken on the sipserver that holds the registration. This server is sending the invite over the existing session and all works. The trace ServerB.pcap is taken on the other server and this one tries to open a session to the phone on the wrong port (if I am not mistaken). This is RST-ed in packet 24 and then S-B sends an invite to the IVR. If wanted I can send a snapshot from S-B or both servers. Please advise what to do. Paul From: pscheep...@epo.org To: sipx-users@list.sipfoundry.org Date: 04-02-2011 16:07 Subject: [sipx-users] Problems with HA-setup, UDP and TCP ports mixed up, only 50% of calls come through Sent by: sipx-users-boun...@list.sipfoundry.org For the second time in a looong time I have the problem that only 50% of the calls from a GW to a SIP-phone come through, the other 50% go to voicemail directly. I have an HA setup and the GW is distributing the calls round-robin to the 2 SipX servers that form an HA-cluster. Also calls from phones registered on one server (S-A) of the HA cluster to a phone with the problem on the other server (S-B) will go to voice mail directly. I am using 4.2.1-018971 and Bria 3.1.2.1 Most phones (Bria's) work OK, but some show the following behaviour: When the call flows to the SipX server (S-A) that holds the registration for that phone then the phone starts ringing. When the call flows to the other SipX server (S-B) then you go to voicemail directly. I have traced a working Bria and one with the problem. The difference lies in the port that is being used to send the invite on. BTW: my phones are configured to use TCP. In the normal case the phone registers from port A to 5060 (syn, syn ack etc) on S-A. The phone then sends some Notify requests over UDP from port B to 5060 on S-A. If the call flows through S-A (the server that holds the registration) then the existing session (5060 to port A) is used. If the call flows through S-B then the server sends a SYN from a random port to the phone to port B (so the same port that the phone used to communicate with S-A for UDP communication) This is SYN-acked and all goes well. In the case of the problem all is the same for S-A and these 50% of the calls work. If the call flows through S-B however then the SYN is not send to port B (the UDP port used by the phone between phone and S-A), but to port A (the TCP port of S-A). This SYN is generously RST-ed and you end up in voicemail. I found a really old issue, http://track.sipfoundry.org/browse/XCL-89 maybe something like this can happen very rarely as well. If needed I can send wiresharks, snapshots or anything else, please let me know. Restarting services does not help. Resetting the servers one at a time does not solve the problem as well. The only remedy so far that sort of works is resetting both servers at the same time. Paul_______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/ _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/ -- ====================== Tony Graziano, Manager Telephone: 434.984.8430 sip: tgrazi...@voice.myitdepartment.net Fax: 434.326.5325 Email: tgrazi...@myitdepartment.net LAN/Telephony/Security and Control Systems Helpdesk: Telephone: 434.984.8426 sip: helpd...@voice.myitdepartment.net Helpdesk Contract Customers: http://support.myitdepartment.net Blog: http://blog.myitdepartment.net Linked-In Profile: http://www.linkedin.com/pub/tony-graziano/14/4a6/7a4 _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/ _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/ [attachment "OK-ServerB.cap" deleted by Paul Scheepens/EPO] [attachment "OK-ServerA.cap" deleted by Paul Scheepens/EPO] [attachment "OK-ServerA-udp.pcap" deleted by Paul Scheepens/EPO] _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/ [attachment "Register-BNOK.pcap" deleted by Paul Scheepens/EPO] _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/ _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/
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