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DHCP Relay Issues over VPN

  • exceed
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24 Jul 2013 17:09 #1 by exceed
DHCP Relay Issues over VPN was created by exceed
So we have a DrayTek Vigor 3900 (1.0.6.1) at our main office utilising 2 ADSL connections, a fibre leased line and a satellite connection.

At our backup site we have a DrayTek Vigor 2830 (3.6.3) on a single ADSL line.

Both sites are connected using a lan to lan VPN (IP-Sec) going over the fibre leased line.

Main office is 192.168.0.0/24 and backup site is 192.168.1.0/24.

The Vigor 3900 is the DHCP server with remote dial in users enabled to receive an IP address assignment, I've enabled DHCP server relay on the Vigor 2830 and set the server IP address correctly (the local adddress).

Whilst both routers are clearly able to connect to each other and we have complete access to both sites without problem DHCP server relay does NOT seem to work.

My question is am I doing something wrong or is this a firmware bug?

Apologies if I've missed anything!

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