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New Member

DHCP

We are currently in the process of moving to DHCP. Servers issuing IP while routers relaying DHCP request. Do I have to enable "IP direct broadcast" on the ethernet or fastethernet port ?

7 REPLIES
New Member

Re: DHCP

No ,you can config "ip help address xxx" on port .

New Member
New Member

Re: DHCP

I have already configured IP helper address and block the other UDP ports except port 67 and 68. I found out this command on the ethernet port

(no ip direct broadcast)

My question is, will I need to enable "IP direct broadcast" ?

New Member

Re: DHCP

hi

when you configure ip helper address",the router will enable to change the DHCP broadcast packet to unicast packet,so it not need to enable ip direct broadcast on port .

New Member

Re: DHCP

Thank you so much. I think that was the answer to my question.

New Member

Re: DHCP

Hi U should take care while using ip helper command as it by default forwards 8 types of UDP traffic so enable what ever u require ,why to allow unnecessary bodcasts pass through the router.use ip forward prtocol command... for this

New Member

Re: DHCP

Hi,

It is better to use the "ip helper" command. It will forward those BOOTP/DHCP UDP ports to your DHCP server...

Thanx...

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