09-07-2002 06:26 PM - edited 03-02-2019 01:12 AM
Hello, I configured my router based on this document http://www.cisco.com/warp/public/109/router_behind_cm_19268.shtml but the outside interface doesn't get an ip address from the cable modem, I made a debug dhcp details and the interface keeps sending acks to the dhcp server but there is no response, i also set the mac-address of the interface the same as the nic where the cable modem was connected.
Please i need a help on this.
09-08-2002 07:12 AM
My config that works is
interface Ethernet0/1
description connected to cablemodem
mac-address
ip address dhcp
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat outside
no ip mroute-cache
half-duplex
no cdp enable
!
When I created the cablemodem connection, I used an old 3Com 3C509 10meg Nic for the tech to create the connection. They registered my MAC in their DHCP as a restricted connection.
When the tech left, I removed the NIC from the PC and placed the MAC on this i/f then rebooted the router. I got the same IP as the PC did, then I started adding in the usual access lists and controls.
-Jeff
09-08-2002 06:38 PM
Thanks, I didn't use this commands...
interface Ethernet0/1
description connected to cablemodem
mac-address
ip address dhcp
no ip redirects - THIS ONE
no ip unreachables - THIS ONE
no ip proxy-arp - THIS ONE
ip nat outside
no ip mroute-cache - THIS ONE
half-duplex - THIS ONE - NO SUPPORTED BY MY INTERFACE
no cdp enable
Well, I will try to add this commands to my configuration, but just for curiousity,
why when make a debug dhcp detail i get an error that says something like "unknow dhcp problem, no allocation possible".
Thanks in advance Jeff.
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