[c-nsp] DHCP Forwarding Strategy

[cnsp at marenda.net]

> So is there anything I am missing? Is there any good documentation on
> what information forwarded DHCP requests have by default or what things
> I can add (besides the quite useless port number where the request came
> in)?

Look at 

http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/1
2.2_25_see/configuration/guide/swdhcp82.html#wp1148846

and upgrade your 3550's to at least 12.2(25) 
and you will be able to get the vlan-id .

( 12.2(44)SE6 is nearly current )

Hope this help's,

Juergen.