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Author Topic: Can't see 2nd LAN with VPN tunnel  (Read 4111 times)

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Offline ccottreau

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Can't see 2nd LAN with VPN tunnel
« on: July 27, 2012, 07:19:53 AM »
We have 2 separate LAN's connected via a BSR222 VPN tunnel. Also each Location is equipped with a Nortel BCM50 pbx. Both locations have VOIP and can intercom/transfer between locations.

We need to see both LAN's in order to implement a Microsoft SharePoint Server - I think that's how it works because we can't sign in from the 2nd LAN.

How do we configure the BSR222's  in order for the 2nd location to log into the SharePoint server through the tunnel? Without this change affecting the current BCM50 VOIP system configurations.

Will the Quality of the VOIP service be degraded? Qos

Chris C


Offline Telair

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Re: Can't see 2nd LAN with VPN tunnel
« Reply #1 on: July 30, 2012, 05:23:15 PM »
Sorry, it's been a while since I had a BSR222 unit to play with, so bear with me.  How do you have routing working between the BSR222's on each side of the tunnel?  From a workstation, can you ping a device on the other side of the VPN tunnel?

Offline ccottreau

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Re: Can't see 2nd LAN with VPN tunnel
« Reply #2 on: July 31, 2012, 07:30:58 AM »
We have 1 BCM50 PBX phone system at each end of the tunnel with IP phones and that is working OK - i guess, a little scratchy when we call on the intercom. Outside lines are fine.

Can't see the LAN on windows explorer.

I can ping the router on the other end but I can't get past it and ping any device beyond it.
I'm at 192.168.0.1 and i can ping the 192.168.1.1 but that's it.

Offline Telair

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Re: Can't see 2nd LAN with VPN tunnel
« Reply #3 on: August 02, 2012, 06:41:48 PM »
Is the VPN router the default gateway in both LAN locations?

Offline ccottreau

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Re: Can't see 2nd LAN with VPN tunnel
« Reply #4 on: August 03, 2012, 08:18:41 AM »
Yes they are.

Offline Michael McNamara

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Re: Can't see 2nd LAN with VPN tunnel
« Reply #5 on: August 04, 2012, 11:53:35 PM »
When you trace route the other office where does the traffic go?
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Offline ccottreau

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Re: Can't see 2nd LAN with VPN tunnel
« Reply #6 on: August 07, 2012, 07:45:02 AM »
Trace Route?

Offline ccottreau

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Re: Can't see 2nd LAN with VPN tunnel
« Reply #7 on: August 09, 2012, 02:54:15 PM »
OK we tried the trace route and it has seen the local router and the router at the other end of the tunnel. it shows both the time and the IP of each.

But when i try to tracert an IP beyond the other router it times out.


Offline Michael McNamara

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Re: Can't see 2nd LAN with VPN tunnel
« Reply #8 on: August 11, 2012, 02:31:35 PM »
Does the next hop in the network know how to get back to you?
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Offline ccottreau

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Re: Can't see 2nd LAN with VPN tunnel
« Reply #9 on: August 13, 2012, 08:05:56 AM »
we pointed the trace route to 192.168.0.155 form 192.168.1.222 and it says "TRACE COMPLETE"




Offline Michael McNamara

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Re: Can't see 2nd LAN with VPN tunnel
« Reply #10 on: August 13, 2012, 11:43:11 AM »
In short you need to understand if the packets are making it across the VPN to the edge device and then making it back from the edge device. You can test this by setting up WireShark on the device, if you see the ICMP echo requests you know the problem is with the return traffic. Then you can focus on that aspect, right now you only know it doesn't work and your not sure why.

A silly question but you have all these networks defined in the tunnel configuration correct?
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