voip over ipsec tunnel
Howdy all, I have just installed a site to site ipsec tunnel as per the example on the Tik wiki. At one end I have a PBX that has it's own proprietary IP protocol (RTP based) and also has SIP extensions. The remote extensions connect over the ipsec tunnel to the PBX (routed, not bridged). All works well basically, except that on two occasions during testing, I lost voice completely at the non-PBX end for about 5-10 seconds, after which it restored by itself. The other end could hear me fine but I could not hear anything. I was able to look at the LCD (there is a RB2011UAS at each end) when this occurred and I could see a drop in the receive data down to zero while the transmit was still at around 100kbps. I have not configured any QoS at this stage. Keep in mind that pretty much nothing else was using the tunnel at the time. The WAN link is 12/4Mbps at both ends. Does anyone have any clues as to why this is happening? Cheers, Dave. -- David Ryan - 0402 054 426 RJS Communications dsryan@rjs.com.au MTCNA, MTCWE, MTCRE
Hi Dave, We have a similar setup, but between 2 RB450G's. They are still running early 4.9 software (will upgrade one day soon), and we get one way no speech on long time calls, over 10 minutes. Lasts for about 5-10 seconds, then comes back. This affects the non PABX end, PABX is a NEC SV8100 using net link across the tunnel. Phones are TDM to remote shelf, so only RTP is between PABX and remote shelf connected via net link. What version software are you running in the RB2011's? What PABX (if not NEC, that would rule out a similar PABX problem)? Regards Mark Voevodin 0410520070 The Communications Company markv@commsco.com.au Nitel Software markv@nitel.com.au MTCNA Sent from my iPhone
On 26 Jul 2014, at 10:28 am, David Ryan <dsryan@rjs.com.au> wrote:
Howdy all,
I have just installed a site to site ipsec tunnel as per the example on the Tik wiki.
At one end I have a PBX that has it's own proprietary IP protocol (RTP based) and also has SIP extensions. The remote extensions connect over the ipsec tunnel to the PBX (routed, not bridged).
All works well basically, except that on two occasions during testing, I lost voice completely at the non-PBX end for about 5-10 seconds, after which it restored by itself. The other end could hear me fine but I could not hear anything. I was able to look at the LCD (there is a RB2011UAS at each end) when this occurred and I could see a drop in the receive data down to zero while the transmit was still at around 100kbps.
I have not configured any QoS at this stage. Keep in mind that pretty much nothing else was using the tunnel at the time. The WAN link is 12/4Mbps at both ends.
Does anyone have any clues as to why this is happening?
Cheers, Dave.
-- David Ryan - 0402 054 426 RJS Communications dsryan@rjs.com.au MTCNA, MTCWE, MTCRE _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
Hi, Are you using NAT across the tunnel? -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of David Ryan Sent: Saturday, 26 July 2014 9:59 AM To: public@talk.mikrotik.com.au Subject: [MT-AU Public] voip over ipsec tunnel Howdy all, I have just installed a site to site ipsec tunnel as per the example on the Tik wiki. At one end I have a PBX that has it's own proprietary IP protocol (RTP based) and also has SIP extensions. The remote extensions connect over the ipsec tunnel to the PBX (routed, not bridged). All works well basically, except that on two occasions during testing, I lost voice completely at the non-PBX end for about 5-10 seconds, after which it restored by itself. The other end could hear me fine but I could not hear anything. I was able to look at the LCD (there is a RB2011UAS at each end) when this occurred and I could see a drop in the receive data down to zero while the transmit was still at around 100kbps. I have not configured any QoS at this stage. Keep in mind that pretty much nothing else was using the tunnel at the time. The WAN link is 12/4Mbps at both ends. Does anyone have any clues as to why this is happening? Cheers, Dave. -- David Ryan - 0402 054 426 RJS Communications dsryan@rjs.com.au MTCNA, MTCWE, MTCRE _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
You may also want to consider ipsec config (lifetime/lifebytes). -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Stavros Patiniotis Sent: Saturday, 26 July 2014 11:08 AM To: 'MikroTik Australia Public List' Subject: Re: [MT-AU Public] voip over ipsec tunnel Hi, Are you using NAT across the tunnel? -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of David Ryan Sent: Saturday, 26 July 2014 9:59 AM To: public@talk.mikrotik.com.au Subject: [MT-AU Public] voip over ipsec tunnel Howdy all, I have just installed a site to site ipsec tunnel as per the example on the Tik wiki. At one end I have a PBX that has it's own proprietary IP protocol (RTP based) and also has SIP extensions. The remote extensions connect over the ipsec tunnel to the PBX (routed, not bridged). All works well basically, except that on two occasions during testing, I lost voice completely at the non-PBX end for about 5-10 seconds, after which it restored by itself. The other end could hear me fine but I could not hear anything. I was able to look at the LCD (there is a RB2011UAS at each end) when this occurred and I could see a drop in the receive data down to zero while the transmit was still at around 100kbps. I have not configured any QoS at this stage. Keep in mind that pretty much nothing else was using the tunnel at the time. The WAN link is 12/4Mbps at both ends. Does anyone have any clues as to why this is happening? Cheers, Dave. -- David Ryan - 0402 054 426 RJS Communications dsryan@rjs.com.au MTCNA, MTCWE, MTCRE _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
participants (3)
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David Ryan -
Mark Voevodin -
Stavros Patiniotis