FWSM dhcprelay limitations

[rathinilesh]

Hi.. I am looking to configure my FWSM as a dhcp relay agent.

The Cisco doc. as below mentions that

"Note There is a limit of 100 active DHCP bindings when configuring a dhcp relay using the dhcprelay enable command."

Does this mean that I cannot have more than 100 hosts requesting dhcp addresses through the FWSM?

Regards,

Nilesh

http://www.cisco.com/en/US/docs/security/fwsm/fwsm31/command/reference/d2.html#wp1563622

[varrao]

Hi Nilesh,

Thats correct. The max limit for dhcprelay bindings is 100, if that limit is reached no more dhcp relay binding would be done, until a host terminates its binding. To check if the limit has maxed out, you can use the command:

show dhcprelay statistics

Yu can also run a debug, if the clients stop getting the ip's, to check if  the limit has exceeded:

debug dhcprelay error

Hope this helps.

Thanks,

Varun

[rathinilesh]

Hi Varun.. thank you for your reply.

Dunno why the FWSM needs to care about the bindings..

Guess I will have to move the configs to the switch then because I need more than just a 100 dhcp addresses

[varrao]

Hi Nilesh,

The FWSM is acting like a dhcprelay on the network and it maintains a table of all the dhcp bindings or requests that it forwards to teh server. There already has been a Enhancement request filed on this, you can refer this for it:

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsk81211

Hope this helps.

Thanks,

Varun