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Cisco ASR1001 NAT for SIP

emichrist
Level 1
Level 1

Hi. 

So here is our scheme:

Spoiler
scheme.PNG

Cisco ASR has NAT translation 1:1 from 10.10.10.254 to public IP (let's say it is 1.1.1.254):

ip nat inside source static 10.10.10.254 1.1.1.254 redundancy BDI10

So my SIP station can make registration and make call but no voice at all. I was try to catch traffic and after registration there is no RTP packets with voice. 

I was trying to use ALG:

ip nat service sip udp port 5060
ip nat service sip tcp port 5060
ip nat service sip udp port 5061
ip nat service sip tcp port 5061

but still no voice. What should i do to make sip work correctly? 

Remote office router has no ACL at all.

interface GigabitEthernet0/1
description inside
ip address 10.10.10.1 255.255.255.0
interface GigabitEthernet0/0
 description UPLiNK
 ip address 192.168.100.2 255.255.255.0

 

2 Replies 2

emichrist
Level 1
Level 1

Okay after some manipulation with SIP station i can now hear the voice from 10.10.10.254 but remote office cant hear anything. What could be wrong?

Hello

I don't see any dual connectivity in your topology so not so sure why you have stated a nat redundancy?

Can you post the config of the ASR rtr please? 


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Kind Regards
Paul
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