I have a Cisco ASA based VPN currently deployed in a customer data centre. The project is an upgrade from a local VPN3000 Series Concentrator. The final service will handle a lot more clients than the previous local one, so a scalable DHCP service is required for end clients.
The data centre is using Lucent QIP for DNS & DHCP Services which is working fine for other servers & services.
When my VPN client session is built, authentication is successful and a tunnel through the ASA to the DHCP Server is built.
In successive capture files using bi-directional access-lists placed strategically in the data centre, I see the DHCP request traffic reaching the VLAN that the QIP Server is on. The QIP Server logs see the requests and -allegedly- respond. But I never recieve the DHCP response.
Has anybody had the same issues? Is there a known good fix for this? I am also raising a TAC Case for this problem and will share any information I recieve - but would rather solve the issue here first!! :)