Dial Peer Question VGW to CUCM

[latintrpt]

Hello,

I have 4 cisco voice gateways.

2x 3845's

2x 3945's

I'm looking to put in 8 call manager's.  4 that are active and 4 that are backup.

My question is, do I need my dial peers to be exactly the same on each voice gateway?

For instance here are two dial-peers on one of my voice gateways that point to two different call managers.

dial-peer voice 50 voip

description Inbound calls send to CCM

destination-pattern [2-7]....

progress_ind setup enable 3

voice-class codec 100

voice-class h323 1

session target ipv4:10.74.13.2

dtmf-relay h245-alphanumeric

ip qos dscp cs5 media

ip qos dscp cs3 signaling

no vad

!

dial-peer voice 51 voip

description Inbound calls send to CCM

preference 1

destination-pattern [2-7]....

progress_ind setup enable 3

voice-class codec 100

voice-class h323 1

session target ipv4:10.73.13.3

dtmf-relay h245-alphanumeric

ip qos dscp cs5 media

ip qos dscp cs3 signaling

no vad

Would I need to do the following on each voice gateway for true redundancy?

dial-peer voice 50 voip

description Inbound calls send to CCM

preference 1

destination-pattern [2-7]....

progress_ind setup enable 3

voice-class codec 100

voice-class h323 1

session target ipv4:10.74.13.2

dtmf-relay h245-alphanumeric

ip qos dscp cs5 media

ip qos dscp cs3 signaling

no vad

!

dial-peer voice 51 voip

description Inbound calls send to CCM

preference 2

destination-pattern [2-7]....

progress_ind setup enable 3

voice-class codec 100

voice-class h323 1

session target ipv4:10.74.13.3

dtmf-relay h245-alphanumeric

ip qos dscp cs5 media

ip qos dscp cs3 signaling

no vad

dial-peer voice 52 voip

description Inbound calls send to CCM

preference 3

destination-pattern [2-7]....

progress_ind setup enable 3

voice-class codec 100

voice-class h323 1

session target ipv4:10.74.13.4

dtmf-relay h245-alphanumeric

ip qos dscp cs5 media

ip qos dscp cs3 signaling

no vad

!

dial-peer voice 53 voip

description Inbound calls send to CCM

preference 4

destination-pattern [2-7]....

progress_ind setup enable 3

voice-class codec 100

voice-class h323 1

session target ipv4:10.74.13.5

dtmf-relay h245-alphanumeric

ip qos dscp cs5 media

ip qos dscp cs3 signaling

no vad

etc etc........................................

[beachwalker]

its depends upon what you need..need more information about design. And you need to set your routepattern in CUCM for call routing......

[beachwalker]

is this centeralized ddeployement ?

[Chris Deren]

Your dial-peer destinations need to match the 3 CUCM servers that are assigned to CM Group used by the device pool that is assigned to the H323 Gateway on CUCM, simple as that.

HTH,

Chris

[latintrpt]

So I'm planning on using the following:

PUB - rudua-cucmp001

--------------------

CMG1

sub1 - d-cucm001

sub3 - p-cucm003   ----> VGW3845-1

sub5 - d-cucm003

CMG2

sub2 - d-cucm002

sub4 - p-cucm004  ---> VGW3845-2

sub6 - d-cucm004

CMG3

sub7 - p-cucm001

sub5 - d-cucm003  ---> VGW3945-1

sub3 - p-cucm003

CMG4

sub8 - p-cucm002

sub6 - d-cucm004 ---> VGW3945-2

sub4 - p-cucm004

--------------------

TFTP/MOH

sub9 - d-cucm005

sub10 - p-cucm005

So what would happen with VGW3845-1?  Wouldn't that mean all my call manager's associated to that VGW would have call routing issues?

[Chris Deren]

You will need to ensure that the dial-peers on that GW point to these 3 servers. Call will not be accepted unless the CM Group used by the GW configuration references common servers.

For outbound now you have more flexibility with CUCM 8.5+ as you can use "Run on All Nodes" configuration on the Route Lists.

HTH, please rate all useful posts!

Chris

[latintrpt]

So I guess with my configruation there really isn't redudancy in case of single router failing correct?

[Chris Deren]

I don't know what your setup is as in one post you are showing hostnames and the other you have IPs.  I am not your DNS to resolve it :-)

But, I provided you the logic of how it works, should be easy to come up with conclusions.

HTH,  glad of providing you with assistance!!!

Chris

[Zekeria Sammantar]

I have the same deployment. I would like to reduce the number of dial-peers to 1 Dial-peer. Is that possible if I use server groups in the dial-peer that directs inbound calls to CUCM.?

Doc:

http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/dialpeer/configuration/xe-3s/vd-xe-3s-book/multiple-server-groups.html

[Chris Deren]

Yes, but that is brand new feature on brand new IOS, so you may need to upgrade your IOS.  Keep in mind that feature works only for voip dial peers and not pots (just an FYI).

HTH,

Chris