Re: OT : user in our Building can't heare the user in the other

Call Setup rarely flows the same way as the voice traffic.

99% of the time when this occurs it is a reachability problem or a
firewall....

BTW I don't get UDP being a subset of TCP.... they are two different
services of the transport layer.

-Carl

On Wed, Jun 22, 2011 at 4:59 PM, -Hammer- <bhmccie_at_gmail.com> wrote:

> Oh yeah. I'm not saying it ISN'T the firewall. I just am used to people
> calling me asking why the firewall is blocking something because they
> have no concept so I enjoyed seeing this thread. No. I don't classify
> most of the folks on this distro as end users. Reading up on RTP now.....
>
> -Hammer-
>
>
>
> On 06/22/2011 03:56 PM, JB Poplawski wrote:
> > Good call, I should step back and also mention routing (reachability)
> > could be an issue.
> >
> > Could be a fixup issue as well. I've seen those commands break/fix
> things.
> >
> http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00801fc74a.shtml
> >
> > Blaming the firewall....Take the firewall out and I bet it works... :)
> >
> > On Wed, Jun 22, 2011 at 3:50 PM, -Hammer-<bhmccie_at_gmail.com> wrote:
> >
> >> OK. Being a firewall guy I love when people blame the firewall. I'm not
> >> saying it's not the firewall but isn't RTP a TCP transport layer
> >> protocol? I'm not a voice guy so please don't bash me too much. Do the
> >> phones make independent connections (like a send and receive channel) to
> >> each other? Which part is stateless?
> >>
> >> -Hammer-
> >>
> >>
> >>
> >> On 06/22/2011 03:28 PM, JB Poplawski wrote:
> >>
> >>> Determine the IP addresses of the phones at each site (assuming the
> >>> whole subnet needs to be opened up).
> >>> Verify UDP from their side to your side is valid. If you can't hear
> >>> the other building, the RTP stream is being blocked coming your way.
> >>>
> >>> HTH,
> >>> JB
> >>>
> >>> On Wed, Jun 22, 2011 at 3:17 PM, Joe Astorino<
> joeastorino1982_at_gmail.com> wrote:
> >>>
> >>>
> >>>> Sounds like a firewall issue. I would investigate that the firewall
> is
> >>>> allowing the proper RTP voice packets from building2 back to building1
> like
> >>>> JB said. Now, the political implications of said task might be harder
> than
> >>>> it sounds depending on your relationships with other teams and who
> runs the
> >>>> firewall lol
> >>>>
> >>>> On Wed, Jun 22, 2011 at 4:07 PM, wael Ahmed<wsadani_at_gmail.com>
> wrote:
> >>>>
> >>>>
> >>>>
> >>>>> Hi GS
> >>>>> i have a problem here and i need your sugession
> >>>>> this is the senario
> >>>>>
> >>>>> iptuser(our Building)--------access
> >>>>>
> >>>>>
> switch1----corswitche1----------------firewall--------coreswitch2---------acess
> >>>>> switch2------ iptuser(otherbuilding)
> >>>>>
> >>>>>
> >>>>> The unified Communication conected to coreswitch1
> >>>>>
> >>>>> coreswitch1 connecetd to firewall by Fiber it is end 10.20.91.100 the
> >>>>> firewall end 10.20.91.105
> >>>>> My responsability till only coreswitch1 and there is seperated team
> to the
> >>>>> firewall coreswitch2
> >>>>>
> >>>>> ipt user(our Building) can heare each other
> >>>>> ipt user (other Building ) can heare eah other
> >>>>> ipt user (other Building ) can heare ipt(our Building)
> >>>>> ipt user (our Building) can't heare iptuser(othe Building)
> >>>>>
> >>>>>
> >>>>>
> >>>>> voice vlans are in access switch 1 and coreswitch 1 vlan 230
> >>>>> voive vlan are in acce switch 2 and coreswitch2 vlan 111
> >>>>> any idea
> >>>>> thanks
> >>>>>
> >>>>>
> >>>>> Blogs and organic groups at http://www.ccie.net
> >>>>>
> >>>>>
> _______________________________________________________________________
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> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>> --
> >>>> Regards,
> >>>>
> >>>> Joe Astorino
> >>>> CCIE #24347
> >>>> Blog: http://astorinonetworks.com
> >>>>
> >>>> "He not busy being born is busy dying" - Dylan
> >>>>
> >>>>
> >>>> Blogs and organic groups at http://www.ccie.net
> >>>>
> >>>>
> _______________________________________________________________________
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> >>>>
> >>>>
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> >>>
> >>
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> >>
> >> _______________________________________________________________________
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>
>
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>
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Received on Wed Jun 22 2011 - 17:29:53 ART