How to configure failover on H323 gateway - 3845 router

[jenny.russo]

I have two 3845s to configure for faiover, they will be gateways but am unsure about setup - any ideas?

[Adrian Saavedra]

Hi,

How is your topology?

You can read this documents for information:

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_configuration_example09186a0080094852.shtml

http://www.cisco.com.ru/en/US/docs/voice_ip_comm/cucm/admin/4_1_3/ccmcfg/b03rtlst.html

Regards,

-- adrián.

[jenny.russo]

Thank you, but that tells me how to configure the servers for redudancy but my issue is to have two voice gateways in a failover configuration, we are using HSRP but not sure how to set the failover router to become the active gateway, providing DHCP if the primary fails. Any help greatly appreciated.

[dezoconnor]

Hi,

If you're using CUCM you will need to put your 2 Voice Gateways into a Route Group and Route List so that if one gateway fails calls will be routed via the other.

On your Voice Gateways themselves you will need to configure VoIP dial-peers to point inbound calls to your CUCM:

dial-peer voice 22 voip

preference 1

destination-pattern 22.. (Phone Extn)

progress_ind setup enable 3

no modem passthrough

voice-class codec 1

voice-class h323 1

session target ipv4:x.x.x.x (CUCM Subscriber Address)

dtmf-relay h245-alphanumeric

fax rate 7200 bytes 48

fax nsf 000000

fax protocol pass-through g711ulaw

no vad

!

dial-peer voice 23 voip

preference 3

destination-pattern 22..

progress_ind setup enable 3

no modem passthrough

voice-class codec 1

voice-class h323 1

session target ipv4:x.x.x.x (CUCM Publisher address)

dtmf-relay h245-alphanumeric

fax rate 7200 bytes 48

fax nsf 000000

fax protocol pass-through g711ulaw

no vad

HTH

[jenny.russo]

Thank you.

I'll test that and post results!

[gil.guevara]

Did you all figure this one out - I have the same issue.  Thanks