Cannot Enable SIP on LAN2 1

[SupportDude]

Hello!

500v2 8.1(65)
Licensed for 20 SIP channels.
SIP trunks provided by Telepacific.

I am unable to get the SIP trunks to use the WAN/LAN2 port on the IPO.
I think it is related to the setup engineered by the customer and Telepacific.
This is not my first rodeo when it comes to SIP trunking, but I do still lack knowledge on the internal workings of the IP Office.

LAN1 has a private network address, 192.168.110.10.
Telepacific requested a private IP on the customer network for their equipment and got 192.168.110.18.
Telepacific wants to direct the SIP trunks to the private IP address, but the customer doesn't want to use LAN1, so we configured LAN2 IP as 192.168.110.17 (I think this is what is causing the problem).
I am a bit ignorant on the data and internal router workings of the IP Office, but I'm pretty sure I just configured the interfaces of the internal router into the same subnet?

Now, if I enable SIP trunks on LAN2 and disable SIP trunks on LAN1, monitor we tell me the SIP trunks are out of service.
If I enable SIP trunks on LAN1 and LAN2, I will see OPTIONS packets being sent from LAN1, of course I don't see a reply from the Telepacific equipment because its looking for packets from the LAN2 address.
I tried building a static route to 192.168.110.18 using LAN2. No go.
No matter what, I cannot get LAN2 to send OPTIONS packets, and if I disable SIP trunks on LAN1, it seems to shut down the SIP trunking completely.
Will this ever work with this configuration?

Are there some rules that must be followed when using both of the LAN interfaces, like LAN1 for private IP's only and LAN2 for public IP's?
Does each interface need to be in a unique subnet?

Thanks in advance for your time!

-SD-

http://www.mysupportguy.net

 

[amriddle01]

LAN1 and LAN2/WAN cannot be in the same subnet...doesn't work



"No problem monkey socks

 

[SupportDude]

Thank-you amriddle!
I thought this was a problem, but getting confirmation from one of the people I consider a top gun on this product makes me feel like maybe I do know a thing or two!
So, if we configure the Telepacific equipment and LAN2 into a different subnet and connect the Telepacific equipment directly to LAN2 this configuration should work?
And I can use private addresses on both interfaces without a problem?

Are there any other rules you can think of when using both interfaces on the IP Office?

Thanks again for freely sharing your expertise.


-SD-

http://www.mysupportguy.net

 

[amriddle01]

Yes that should work, being on public/private addresses makes no difference they both work, just not both in the same one



"No problem monkey socks