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Back-up route for telephony service.

marionfabor
Level 1
Level 1

Hi All,

 

I want to ask for help on how will I configure the telephony service on my topology that there should be a backup route for my VOIP when one serial line is cut-off/removed. I have set the DHCP, OSPF routing also telephony service with the dial-peers but when I try to cut off one serial line the IP phone won't work. Everyone's suggestions are all welcome.

 

Thanks

8 Replies 8

Hello,

 

do you have IP connectivity after the failover ? Is your Call Manager reachable through the backup line ?

Yes. I do have IP connectivity and call manager is reachable (pingable) after failover. 


@Georg Pauwen wrote:

Hello,

 

do you have IP connectivity after the failover ? Is your Call Manager reachable through the backup line ?


 

Deepak Kumar
VIP Alumni
VIP Alumni

Hi,

Can you share configuration or PT lab files with us so we can digg in the issue?

Regards,
Deepak Kumar,
Don't forget to vote and accept the solution if this comment will help you!

You also might want to consider running an EEM script that clears the dial peers when the failover occurs. As requested by Deepak, post the running configs of your routers...

Hi All,

 

Here below are the configs related to the telephony service. Thank you.

ip dhcp pool CVOIP
network 192.168.200.0 255.255.254.0
default-router 192.168.200.1
option 150 ip 192.168.200.1


interface FastEthernet1/0.200
encapsulation dot1Q 200
ip address 192.168.200.1 255.255.254.0

router ospf 1
log-adjacency-changes
network 10.10.10.8 0.0.0.3 area 0
network 10.10.10.0 0.0.0.3 area 0
network 192.168.200.0 0.0.1.255 area 0
network 192.168.100.0 0.0.1.255 area 0

dial-peer voice 63000 voip
destination-pattern 6300.
session target ipv4:10.10.10.2
!
dial-peer voice 64000 voip
destination-pattern 6400.
session target ipv4:10.10.10.9
!
telephony-service
max-ephones 10
max-dn 10
ip source-address 192.168.200.1 port 2000
auto assign 4 to 9
auto assign 1 to 9
!
ephone-dn 1
number 62001
!
ephone 1
device-security-mode none
mac-address 000B.BE7E.90B9
type 7960
button 1:1

Hello,

 

post the full running configuration (show run), and indicate which interface is the backup. How did you set up the failover ? Or do you just use OSPF ?

 

What if you manually clear the dial voice peers after the failover (clear dial-peer voice) ?


Yes. Thats the config that I use above. I only use ospf. How can I setup another failover?  any other recommendations?  Thank you Georg
@Georg Pauwen wrote:

Hello,

 

post the full running configuration (show run), and indicate which interface is the backup. How did you set up the failover ? Or do you just use OSPF ?

 

What if you manually clear the dial voice peers after the failover (clear dial-peer voice) ?

 

 


 

Hello,

 

OSPF by itself should do the job.

 

What happens if you issue the 'clear dial-peer voice' exec command, or shut/no shut the access ports where the PCs and the phones are connected to ?

 

 

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