Techblog

If you have a Cisco ASA and are having problems recieving a DHCP address there are a couple things you should know.

1) Prior to ASA version 7.2.2 (22) there is no way to assign a “client-id”.

2) client-id is a requirement for many ISPs to recieve a DHCP address.

Solution:

1) Need ASA IOS 7.2.(2).22 or higher

2) DO NOT USE ‘Cisco<MAC>-interfaxce_name-<host>’ as the client-id

3) perform the command:

Interface vlanX

dhcp client route distance 1

ip address  dhcp setroute

dhcp-client client-id interface outside

with vlanX being the correct vlan for your outside interface.