ip dhcp snooping

fd_case17 · ‎05-25-2009

Hi,

I used this feature in a previously switched network ( one vlan)

Now , my network looks like several vlans with a 3750 who acts as the hub and makes routing for vlans ( with SVI and ip helper address) , the dhcp server is in a specfic vlan .

How can I configure dhcp snooping for this,

cause my clients never get dhcp offer from the server,

I simply make this on an access swith :

ip dhcp snooping

ip dhcp snooping vlan 10 !vlan access

ip dhcp snooping trust ! for uplink trunk

thanx

cisco_lad2004 · ‎05-25-2009

Fab,

Your configuration looks correct!

1-Enable DHCP snooping.

2-Apply it to selected VLANs.

3-Exclude physical port / trust the legitim DHCP server.

If your set up still does not work, check routing from SVI to server and vice versa.

HTH

Sam