MGCP gateway SRST with dual LAN attachment

Answered Question
May 11th, 2010
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Hi


I have to configure L3 redundancy between a 3825 MGCP Gateway which also is the SRST Gateway and a L3 LAN at the distribution layer.

The customer wants to use OSPF. Ok I need 2 different /30 subnets on the 3825 interfaces plus a loop-back interface with a /32 network all advertised by OSPF.

For MGCP I can bind control and media flows to the loop-back.

For SRST I can configure the loop-back interface addresse as source of SRST.


Does anyone use such a configuration ?

Is it supported by Cisco ?


Usually I use bridging with irb and a bvi interface but my customer does not want to rely on Spanning-Tree.


Kind Regards


Guy

Correct Answer by William Bell about 7 years 1 month ago

Sure. You can bind MGCP control/media to loopback. You can configure SRST to use the loopback. if you have conference/transcoding/etc. media resources, you can bind SCCP to loopback. You can also bind the H323 call processing to the loopback if you had a need to allow your SRST device to communicate with another router.


All of this is supported by Cisco and I use it on every deployment I work on because redundancy is important


I assume from your post that you know how to bind the call control and media channels to your loopback.


HTH.


Regards,

Bill

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Correct Answer
William Bell Tue, 05/11/2010 - 09:15
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Sure. You can bind MGCP control/media to loopback. You can configure SRST to use the loopback. if you have conference/transcoding/etc. media resources, you can bind SCCP to loopback. You can also bind the H323 call processing to the loopback if you had a need to allow your SRST device to communicate with another router.


All of this is supported by Cisco and I use it on every deployment I work on because redundancy is important


I assume from your post that you know how to bind the call control and media channels to your loopback.


HTH.


Regards,

Bill

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guy.richard Tue, 05/11/2010 - 09:31
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Thank you so much for answering so quickly.


You are right I forgot the SCCP conference ressources. So I go on configuring.

Yes I know the 4 binding methods for theese 4 protocols. I did this in the pass when often I used WAN routers as PSTN/SRST gateways.


Kind Regards


Guy

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