Tech 26 Oct 2004 02:35 pm
DHCP+firewall frustration II
Just for the record, putting a DHCP server behind the firewall did work, as, or course, we did not have DHCP packets crossing the firewall anymore. That is, until we added a second VLAN behind the firewall. With more than one VLAN, we need either (a) to have a DHCP server on each VLAN, or (b) to have interfaces on each VLAN on the same DHCP server, or (c) to relay requests across the firewall. (a) or (b) are fine as long as you don’t have many VLANs, but we do. (c) is perfect, but then we go back to the same issue, which is dhcprelay not working.
The last update from our reseller (and support provider) is that the recommended version is no longer x.x(x.1) but x.x(x.16), and that they’re still waiting for Cisco to release it. I’ll let you know how it goes…
