Push Route doesn't work, but route add does

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BillyBuerger
OpenVpn Newbie
Posts: 3
Joined: Wed Nov 24, 2010 9:32 pm

Push Route doesn't work, but route add does

Post by BillyBuerger » Wed Nov 24, 2010 10:19 pm

We have two subnets at our office right now and OpenVPN setup to connect to one of them. I tried pushing the route to the second subnet and it shows up on my client. But I can't ping any PCs on it. If I delete the route on the client and do a route add for the subnet, it works. The only difference I see is that open VPN adds the route with a gateway (the OpenVPN server IP) while route add has On-Link for the gateway. Note that the server is running Windows XP and this particular client is running vista. I know I've seen the same thing in Win7 but don't remember if I've ever tried on XP.

After OpenVPN connection

Code: Select all

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0     192.168.16.1     192.168.16.2     30
       10.60.16.0    255.255.240.0    192.168.15.22   192.168.15.217     30
     192.168.15.0    255.255.255.0         On-link    192.168.15.217    286
    92.168.15.217  255.255.255.255         On-link    192.168.15.217    286
    92.168.15.255  255.255.255.255         On-link    192.168.15.217    286
Manual execute route add

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IPv4 Route Table
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0     192.168.16.1     192.168.16.2     30
       10.60.16.0    255.255.240.0         On-link    192.168.15.217     60
     192.168.15.0    255.255.255.0         On-link    192.168.15.217    286
    92.168.15.217  255.255.255.255         On-link    192.168.15.217    286
    92.168.15.255  255.255.255.255         On-link    192.168.15.217    286
Maybe there are better ways to set this up. I've thought about going the tunnel route instead of bridged. But it's been working for years and I don't really want to mess with it any more than I have to. I just want to be able to add the route in a way that works correctly. And since I can manually add the route on the client, it seems there should be a way to have it do that for me. Below are my server and client configs. Thanks.

Server Config...

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mode server
port 1195
proto udp
dev tap
duplicate-cn
ca "****"
cert "****"
key "****"
dh "****"
server-bridge 192.168.15.22 255.255.255.0 192.168.15.210 192.168.15.224
keepalive 10 120
comp-lzo
persist-key
persist-tun
status openvpn-status.log
verb 3
crl-verify "****"
push "route 10.60.16.0 255.255.240.0"
Client config

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client 
dev tap 
proto udp 
remote **** 1195 
resolv-retry infinite 
nobind 
persist-key 
persist-tun 
ca **** 
cert **** 
key **** 
ns-cert-type server 
cipher BF-CBC 
comp-lzo 
verb 1
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arnotixe
OpenVpn Newbie
Posts: 7
Joined: Fri Jan 28, 2011 4:30 am

Re: Push Route doesn't work, but route add does

Post by arnotixe » Fri Jan 28, 2011 5:48 pm

As http://superuser.com/questions/59996/wh ... nt-command says, "On-Link" means the address can be resolved on the local link, without any gateways.

Can you ping 192.168.15.22 from the client in question, before adding routes manually?
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