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Author fxo port is unregistered after reset
Eric Pedersen

2007-11-23, 1:12 am

I'm running Callmanager 5.1(2) and have a 2851 running 12.4(11)T3 with 2
FXO ports. When I reset one of the FXO ports from callmanager it stays
unregistered until I disable and re-enable mgcp on the router. I took a
packet capture, and when I issue the reset I see the callmanager passing
data to the router on the tcp/2428 backhaul connection, which it looks
like the router does not respond too. Sniffer decodes this as a
"MGMT_CHAN_RESET_REQ" message. "debug ccm-manager backhaul packets" on
the router does not show anything.



I thought the tcp backhaul connection was only used for keepalives
between the gateway and callmanager, and for carrying D-channel
information on PRIs so I am surprised to see anything being passed here
when there are only FXO ports on the gateway.



I set up another 2851 with same hardware on our testbench and it stays
registered on reset, and a packet capture shows normal mgcp packets, and
only keepalive traffic (no data) on the backhaul connection as I would
expect.



Has anyone seen anything like this?



Thanks,

Eric




Erick Bergquist

2007-11-23, 1:12 am

Do you have 'ccm-manager config' in the router config ?

Is the IOS version on your test setup different then the production router?

If it is same IOS, and hardware, and you have ccm-manager config
perhaps it is a MGCP issue where MGCP starts to get flaky after awhile
and needs to be kicked.

On Nov 22, 2007 6:11 PM, Eric Pedersen <eric.pedersen@sait.ca> wrote:
>
>
>
>
> I'm running Callmanager 5.1(2) and have a 2851 running 12.4(11)T3 with 2 FXO
> ports. When I reset one of the FXO ports from callmanager it stays
> unregistered until I disable and re-enable mgcp on the router. I took a
> packet capture, and when I issue the reset I see the callmanager passing
> data to the router on the tcp/2428 backhaul connection, which it looks like
> the router does not respond too. Sniffer decodes this as a
> "MGMT_CHAN_RESET_REQ" message. "debug ccm-manager backhaul packets" on the
> router does not show anything.
>
>
>
> I thought the tcp backhaul connection was only used for keepalives between
> the gateway and callmanager, and for carrying D-channel information on PRIs
> so I am surprised to see anything being passed here when there are only FXO
> ports on the gateway.
>
>
>
> I set up another 2851 with same hardware on our testbench and it stays
> registered on reset, and a packet capture shows normal mgcp packets, and
> only keepalive traffic (no data) on the backhaul connection as I would
> expect.
>
>
>
> Has anyone seen anything like this?
>
>
>
> Thanks,
>
> Eric
>
>
> ________________________________________
_______
> cisco-voip mailing list
> cisco-voip@puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>

Eric Pedersen

2007-11-26, 7:11 pm

Putting on "ccm-manager config" on that router fixed the problem, but I
don't have that on the testbench router and haven't had the same
problem. Both of them are the exact same hardware and same IOS.



-----Original Message-----
From: Erick Bergquist [mailto:erickbee@gmail.com]
Sent: November 22, 2007 21:03
To: Eric Pedersen
Cc: ciscovoip
Subject: Re: [cisco-voip] fxo port is unregistered after reset

Do you have 'ccm-manager config' in the router config ?

Is the IOS version on your test setup different then the production
router?

If it is same IOS, and hardware, and you have ccm-manager config
perhaps it is a MGCP issue where MGCP starts to get flaky after awhile
and needs to be kicked.

On Nov 22, 2007 6:11 PM, Eric Pedersen <eric.pedersen@sait.ca> wrote:
>
>
>
>
> I'm running Callmanager 5.1(2) and have a 2851 running 12.4(11)T3 with

2 FXO
> ports. When I reset one of the FXO ports from callmanager it stays
> unregistered until I disable and re-enable mgcp on the router. I took

a
> packet capture, and when I issue the reset I see the callmanager

passing
> data to the router on the tcp/2428 backhaul connection, which it looks

like
> the router does not respond too. Sniffer decodes this as a
> "MGMT_CHAN_RESET_REQ" message. "debug ccm-manager backhaul packets"

on the
> router does not show anything.
>
>
>
> I thought the tcp backhaul connection was only used for keepalives

between
> the gateway and callmanager, and for carrying D-channel information on

PRIs
> so I am surprised to see anything being passed here when there are

only FXO
> ports on the gateway.
>
>
>
> I set up another 2851 with same hardware on our testbench and it stays
> registered on reset, and a packet capture shows normal mgcp packets,

and
> only keepalive traffic (no data) on the backhaul connection as I would
> expect.
>
>
>
> Has anyone seen anything like this?
>
>
>
> Thanks,
>
> Eric
>
>
> ________________________________________
_______
> cisco-voip mailing list
> cisco-voip@puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>

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