DHCP Relay for Cisco ASA 5505.
Posted on 2009-02-22
I would like to configure my Cisco ASA for DHCP relay and ACLs.
I'm unsure of how to point the ASA to our Cisco Router which handles the DHCP.
Wall -> Cisco 857 Router-> Cisco ASA 5505
I have the Router plugged into the Cisco ASA's outside interface.
The Cisco Router is at 10.0.0.1 and is handing out IPs in a DHCP pool of 10.0.0.50-10.0.0.200.
I would like devices connected to the ASA to receive IPs from the Cisco Router and exist on the same subnet... At least until we upgrade to a Security Plus license which would allow for DMZ deployment and multiple VLANs.
When I enter these commands into the Cisco ASA, devices connected to en1-en7 only seem to receive self-assigned IPs.
ip dhcp setroute (So that the outside interface (Vlan2) receives DHCP from the Cisco Router)
clear config dhcpd
dhcprelay server 10.0.0.1 outside
dhcprelay enable inside
The outside interface does receive an IP from the Router in the 10.0.0.x subnet.
It seems that the DHCP is not passing through.
The idea behind the deployment is that I want the Cisco ASA to handle the firewall.
Currently, my Xserve is also acting as a firewall and I'm not comfortable with that.
Thanks in advance for your help.
I will post a sh run tomorrow...