DHCP Server Port-Based Address Allocation

[krmidhun123]

Hi,

I want to configure cisco 4500 switch as the DHCP server for a VLAN and have it assign one IP address per port. I followed the steps in the article below, but  the client is assigned with a different IP address than the one is configured for that port. These end clients are client routers configured to receive IP address from the DHCP server.

http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_dhcp/configuration/12-2sx/dhcp-12-2sx-book/dhcp-prt-bsd-aa.html

I also noticed that when there is a client switch connected to this port on 4500 , all the end hosts connected to the client switch were getting IP address and I would like to restrict that as well. That is only allocate single IP address per port. Please let me know if this can be done.

Midhun Rajendran

[Borgenstrand]

Hi,
if you suspect that another device is giving out IP addresses in your network, I suggest you do DHCP snooping on the switches. With that you can control that it only comes from one source. With that it would work.

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12-2/15-02SG/configuration/guide/config/dhcp.html