We have obtained a VOIP service from a service provider for external calls in our company (we already have internal VOIP). They have setup the service and now I just need to get our VOIP server to talk to them. They require that our VOIP server's IP address be set to 192.168.244.250 (their gateway is .10).
So I thought of doing the following. Add a seconday IP to my Main Router of 192.168.244.250 and then just NAT everything through to the VOIP server.
Simple. I thought ... Of course I can't get the natting to work. Please check the following and assist !
Switch (can ping 192.168.1.80 and 192.168.244.250) :
interface Vlan1
ip address 192.168.1.1 255.255.0.0
Main Router:
interface Loopback0
no ip address
ip nat outside
interface GigabitEthernet0/0
ip address 192.168.244.250 255.255.255.0 secondary
ip address 192.168.1.80 255.255.255.0
no ip redirects
ip nat inside
ip virtual-reassembly in
ip policy route-map VOIP_NAT
route-map VOIP_NAT permit 10
match ip address 103
set interface Loopback0
access-list 103 permit ip any host 192.168.244.250
ip nat source static 192.168.1.15 192.168.244.250 extendable no-alias
(The VOIP server btw can not be set to 192.168.244.250 as their are too many VOIP devices on the LAN to change. Neither can it be added as a secondary IP because of some or other network failover features it has).
How I try and test this is to open a browser on my PC to http://192.168.244.250 which should then open the web interface on the VOIP server, but it opens the web interface of the Main Router (or it times out, depending on how I screw up the config).
