05-19-2011 02:45 AM - edited 03-04-2019 12:27 PM
I have 2 Cisco 800's connected to each other with a VPN
One thing that puzzles me - although I can ping and tracert between devices on either side of the VPN I get a strange response from the remote router when trying TraceRt to a remote server.
eg:
Server1: 192.168.50.10
Router1: 192.168.50.252
Router2: 10.10.10.1
Server2: 10.10.10.10
Ping from Server1 -> 10.10.10.10 - ok - response time ~33ms
Ping from Server1 -> 192.168.50.252 - ok - response time <1ms
Ping from Server1 -> 10.10.10.1 - ok - response time ~33ms
TraceRt from Server1 -> 10.10.10.1
Tracing route to 10.10.10.1 over a maximum of 30 hops
1 1 ms <1 ms 1 ms 192.168.50.252
2 31 ms 34 ms 32 ms 10.10.10.1
Trace complete.
TraceRt from Server1 -> Server2
Tracing route to 10.10.10.10 over a maximum of 30 hops
1 <1 ms <1 ms <1 ms 192.168.50.252
2 * * * Request timed out.
3 * * * Request timed out.
4 * * * Request timed out.
5 * * * Request timed out.
6 31 ms 31 ms 32 ms 10.10.10.10
Trace complete.
Why am I getting these timeouts?
05-19-2011 02:57 AM
I have the following route line stated in the config
ip route 10.10.10.0 255.255.255.0
and the opposite one on the other router ...
05-19-2011 03:16 AM
Hi,
You're going through an IPSec VPN and so traffic from server1 to server2 is interesting traffic and is encrypted so when it hits router 2 it is dropped.
In your first traceroute you were going from server1 to router 2 and so the traffic was not going through the tunnel.
Regards.
Alain.
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