We have two Cisco 1811 routers configured to establish an IPSEC VPN with each other. The VPN connection establishes just fine, and we are able to ping across the tunnel, however, applications like RDP or joining a domain fail to work properly. We have ruled out duplex mismatches and other common problems. One really interesting twist is that we can connect a laptop to the network and it will work just fine. However the desktop PC's are failing to work. We have tried swapping out NIC cards and other devices without any success. We even reformatted a PC completely to eliminate the computers.
Today we upgraded the IOS on both routers to 12.4(15)T3 hoping that would resolve the issue, but it has not.
I've attached the configs from both routers and also a packet dump that was taken while a PC (192.168.25.17) was trying to RDP to a server (192.168.24.200) across the tunnel. I am seeing a lot of duplicate packets, but I can't make complete sense of it.
Has anyone else seen this before? Are we missing something obvious here?
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...