DHCP and 3750 Switch

Unanswered Question
Dec 12th, 2007
User Badges:

Hi All Experts!

Need help to configure DHCP!



Switchport 1 accessed

Address attched DHCP Server with address

VLAN 12.

Switchport 2 accessed

Address attached a PC with address

I've changed Configuration as following:


ip helper-address

DHCP is configured to reserve ip address to PC based on PC's MAC

problems are:

- PC cannot receive IP Address!!!.

- When I Asign static IP address to PC, I can ping DHCP server ( successfully.

Can you tell me why and how to config the switch.

DHCP server can asign address to PC.

I'm just a newbie!

Thanks all!

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Jon Marshall Thu, 12/13/2007 - 00:01
User Badges:
  • Super Blue, 32500 points or more
  • Hall of Fame,

    Founding Member

  • Cisco Designated VIP,

    2017 LAN, WAN


This sounds more like a DHCP server issue than a switch issue. If you can statically assign an IP address to the PC and then ping the DHCP server it sounds like routing etc. is working.

Can you send switch config.

Also, which type of DHCP server are you using and are there any logs that would point to what is going on.


thanhtq66 Thu, 12/13/2007 - 20:16
User Badges:

Thanks for help!

Wrong in configuration!

it's OK now.



This Discussion