dhcp broadcasts

Unanswered Question
Mar 5th, 2007

Hi all, is there any way i can stop dhcp broadcasts on my switch coming through one of the ports, I have a site plugged in via a lan extension circuit, I dont want the dhcp propagating via the layer 2 link to my other site? how can i do this ?

I have this problem too.
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Amit Singh Mon, 03/05/2007 - 02:45


Please attach a brief network topology and description.

-amit singh

carl_townshend Mon, 03/05/2007 - 03:07

Hi The switch is using layer 2, basically i have 2 sites over a lan extension, i am setting dhcp on the other site, but I dont want the dhcp boradcast coming to my other site

b.petronio Mon, 03/05/2007 - 08:14

I dont think im wrong when im saying that the only way of filtering broadcast's is putting a router/vlan configuration in the middle.

Then u make 2 broadcast domains.

Broadcast Control

Just as switches isolate collision domains for attached hosts and only forward appropriate traffic out a particular port, VLANs provide complete isolation between VLANs. A VLAN is a bridging domain; all broadcast and multicast traffic is contained within the VLAN.

carl_townshend Mon, 03/05/2007 - 08:38

Thanks, I knew that already, I just wanted to know if it can be stopped via layer 2?



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