We have replaced our old cisco 2921 router with cisco 4331 recently. We are running Asterisk SIP server behind NAT.
The configuration is pretty simple and was working with Cisco 2921 for years without issue. However, with same configuration on Cisco 4331, SIP peers are not reachable. Other Non-SIP services are working ok.
We tried to enable/disable SIP ALG but no luck.
Below is the conf with diagram-1 attached herewith.
=============================================================
interface GigabitEthernet0/0/0
ip address 2xx.xxx.xx.4 255.255.255.224
ip nat outside
negotiation auto
ip virtual-reassembly
!
interface GigabitEthernet0/0/1
ip address 10.10.8.1 255.255.255.0
ip nat inside
negotiation auto
ip virtual-reassembly
ip nat inside source static 192.168.99.5 2xx.xxx.xxx.22
ip route 0.0.0.0 0.0.0.0 2xx.xxx.xxx.1
ip route 192.168.99.0 255.255.255.0 10.10.8.254
====================================================
rtr-2r#sh ip nat translations
Pro Inside global Inside local Outside local Outside global
--- 2xx.xx.x.22 192.168.99.5 --- ---
udp 2xx.xxx.xx.22:5060 192.168.99.5:5060 34.xx.xx.xx:5060 34.xxx.xx.xx:5060
Total number of translations: 2
Appreciate if any leads about solving this can be provided.
Thanks,
Sam
