how to ignore BOOTP request on Cisco catalyst 3750

[patrick.zhang]

Hi there,

Cisco catalyst 3750 can't seem to ignore BOOTP request which can be implemented on other routers/switchs using command "IP dhcp bootp ignore"

My current IOS version is 12.2(25)SEB1. Do you know how I can "ignore bootp request" on 3750?

Thanks.

[thisisshanky]

Cant seem to find that command for 3750, so am not sure if a newer IOS will support it. Mean time you can probably enable a access-list that denys BOOTP packets on the respective vlans.

Or if using helper-address, you can do a no ip forward-protocol for Bootp so that bootp packets are not forwarded to the helper-address.

[patrick.zhang]

because I want to use DHCP, I can't use access-list to deny bootp. bootp and dhcp use the same udp port.

my 3750 also functions as a dhcp server, so i'm not using helper-address.