[cisco-voip] Authenticating sip trunk to ITSP from CUBE?

[NateCCIE]

BINDs on CUBEs are evil.  It will use the egress interface automatically without binds, and as you have found, you cannot change binds with calls up.  

 

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Nick Barnett
Sent: Wednesday, May 04, 2016 8:32 AM
To: Brian Meade <bmeade90 at vt.edu>
Cc: Cisco VoIP Group <cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] Authenticating sip trunk to ITSP from CUBE?

 

I'm binding control and media to my inside interface:

sip      

  bind control source-interface GigabitEthernet0/0
  bind media source-interface GigabitEthernet0/0

I suspect this is the issue... is there any way to make the REGISTER messages come from the outside gi0/1 interface?

The reason I'm binding to inside is that we have a a very fluid internal network. I have to make and modify internal dial peers almost daily.  When I need to create a dial peer and put the bind statements on the dial peer, it won't bind properly since there are active SIP calls on the CUBE... so I bound it globally. My external dial peers rarely change, so I bind those directly to gi0/1 (on the DP).

I was under the impression that REGISTER events can take place without a dial peer... but is there a way to, i dunno, make a dial peer for register messages?  Can I use SIP profile magic to get it working as is?

I found this article which is pretty much exactly what I'm dealing with, but it doesn't mention REGISTER at all...

   https://supportforums.cisco.com/blog/154506 <https://urldefense.proofpoint.com/v2/url?u=https-3A__supportforums.cisco.com_blog_154506&d=CwMFAg&c=M-KQspD_LQogCbR-BWCHOaeDEPOhF8vWqHZTaiwxT3c&r=T9uVLZucbHG2NKKKzOrp-o5cpdReHj02PkJJsCVkgfwcv7S0R5lDeFJg2VRbiNih&m=UIAzGDQs8RCZld9kCbExwqpJhTgzpDVwM0k8_I7JRqU&s=jZN-R2pRsZOWN3r5is-aSivDlf9hqddUzDIoOWRWc3E&e=> 

 

 

On Wed, May 4, 2016 at 9:06 AM, Brian Meade <bmeade90 at vt.edu <mailto:bmeade90 at vt.edu> > wrote:

Do you already have the SIP bind under voice service voip?

voice service voice

 sip

  bind all source-interface FastEthernet0

 

On Wed, May 4, 2016 at 9:58 AM, Nick Barnett <nicksbarnett at gmail.com <mailto:nicksbarnett at gmail.com> > wrote:

I've never dealt with an authenticated SIP trunk before and I'm having some issues. I was wondering if anyone has had a similar experience. I already have 2 SIP trunks from ITSP-1 that do NOT require authentication. These are working fine and have been for years.

 

We are adding ITSP-2 and their SIP service DOES require auth.  I've followed their integration guide (which left a lot to be desired) and their acceptance team is telling me my auth is coming from our private class A address.

 

Our CUBE is in HA with an inside (10.x.x.x) and outside (public) IP address. They are seeing REGISTER messages sourcing the inside VIP.

 

I was looking around for an auth BIND statement or something like that, but I haven't had any luck. Any pointers?

 

Thanks,

Nick

 

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