DHCP Relay & Option 82

Bruce Hudson Bruce.Hudson at Dal.Ca
Wed Aug 25 16:19:05 UTC 2010

>> This will work for the example cited. If your network is still flat, you
>> really want a single "shared-subnet" for the entire campus that surrounds
>> all of your subnet stanzas.
> But I think what he is actually trying to do is convert FROM a flat 
> network TO a routed network.

    Sometimes you just have to guess.

    My assumption, largely inferred I admit, was that the network was 
still flat and that they were trying to reconfigure their IP addresses
to facilitate a future split of the the network. That was why they 
were using option 82 to determine where the breaks will be, making the
upcoming split less painful.

    I did not explicitly say that that the DHCP configuration will have
to change to match the real configuration of the network when the split
actually happens. That means, as Simon said, getting rid of any shared
networks no longer appropriate. A split network will probably make use
of option 82 redundant.
Bruce A. Hudson				| Bruce.Hudson at Dal.CA
ITS, Networks and Systems		|
Dalhousie University			|
Halifax, Nova Scotia, Canada		| (902) 494-3405

More information about the dhcp-users mailing list