[c-nsp] Cisco IAD2431

[Andriy A. Yerofyeyev]

hello Tim, group

indeed, CA place endpoint OOS . But , problem arise if MGCP endpoint 
located under nat and ca behind vpf.
Lets figure out, for example ,  external ip of nat router was changed. 
In that case endpoint still silent , cause endpoint didnt know about 
such path changes. Ca
comes to conclusion what endpoint gets oos.
As a results , calls directed in ca->endpoint direction will fail , even 
if endpoint still alive.

ATA186(mgcp) in opposite, dont suffer from such problem, cause it 
actively monitor session and restarts if connection gets lost.

So , to clarify my question - is it possible to force IAD2431 behave 
like ATA186 , if it loose connection to ca ?



Tim Jackson wrote:
> That should be the responsibility of the Call Agent...
>
> IE MetaSwitch does an AUEP (Audit Endpoint) to a non-existent endpoint 
> every 30 seconds to verify that it's alive:
>
> Jun 19 00:22:11.669: MGCP Packet received from 192.168.2.201:2727--->
> AUEP 5101985 MetaSwitch_Connectivity_Test@[66.29.239.162 
> <http://66.29.239.162>] MGCP 1.0
> <---
>
> Jun 19 00:22:11.673: MGCP Packet sent to 192.168.2.201:2727--->
> 500 5101985 Endpt Unknown
> <---
>
> Jun 19 00:22:41.673: MGCP Packet received from 192.168.2.201:2727--->
> AUEP 5102331 MetaSwitch_Connectivity_Test@[66.29.239.162 
> <http://66.29.239.162>] MGCP 1.0
> <---
>
> Jun 19 00:22: 41.673: MGCP Packet sent to 192.168.2.201:2727--->
> 500 5102331 Endpt Unknown
> <---
>
>
> --
> Tim
>
>
> On 6/18/07, *Andriy A. Yerofyeyev* <andriy.yerofyeyev at gmail.com 
> <mailto:andriy.yerofyeyev at gmail.com>> wrote:
>
>     Hello group,
>
>         Could you imagine Cisco IAD2431 configured as mgcp gateway ?
>     Let say
>     mgcp connection failed for some reason (packet loss, external ip
>     changed, etc.) In that case call agent  noticed OOS status of such
>     gateway and silently waited any message from  him.
>         IAD also have no clue about circumstances which happens
>     between him
>     and call agent. and remains silent.
>
>         Is there any way to force mgcp device send periodic status
>     updates
>     (like "hey, i'm alive") to call agent ?
>
>         Thanks , group !
>
>     --
>
>     Best regards,
>
>     Andriy A. Yerofyeyev.
>     Senior Network Engineer.
>
>
>     _______________________________________________
>     cisco-nsp mailing list  cisco-nsp at puck.nether.net
>     <mailto:cisco-nsp at puck.nether.net>
>     https://puck.nether.net/mailman/listinfo/cisco-nsp
>     archive at http://puck.nether.net/pipermail/cisco-nsp/
>
>


-- 

Best regards,

Andriy A. Yerofyeyev.
Senior Network Engineer.