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Trouble routing to a different network segment over VPN
Asked by cahall85 in Windows Networking, Virtual Private Networking (VPN), IPSec Security Protocol
Tags: The route addition failed: Either the interface index is wrong or the gateway does not lie on the same network as the interface. Check the IP Address Table for the machine.
I wonder if anyone can help me.
Setup:
[1] Main network segment 172.20.0.0/16
[2] Secondary network segment 172.21.0.0/16
When on [1] and want to access to [2] I add the static route in a CMD:
route -p add 172.21.0.0 mask 255.255.0.0 172.20.3.10 metric 1
And that works fine. However, if I'm accessing [1] over VPN from home and try to access [2] by adding the same persistent static route I get the following error:
The route addition failed: Either the interface index is wrong or the gateway does not lie on the same network as the interface. Check the IP Address Table for the machine.
The problem obviously stems from the VPN but I'm lost as to how to troubleshoot. I'm using Cisco's proprietary VPN software which adds a virtual network interface and statically assigns itself an IP on install so the IP is 192.168.250.49/24. Is there any conceivable way to add a route that takes this into consideration so I can access servers on [2] over VPN?
Thanks in advance for any help.
Best Regards,
Chris
| [+][-]01/29/08 04:34 AM, ID: 20767135Accepted Solution |
Your question has an Asker Certified™ answer! cahall85 verified that this solution worked for them--which means it will likely work for you, too. Click to view the solution free for 30-days now.
