08-26-2013 03:47 AM
I have a windows 2008R2 dhcp server with two scope. One for voice and one for data vlan. The dhcp server is currently on vlan 20 data and have the ip 192.168.20.9/24. I have two 6450 with routing image. I enabled router interface on each vlan.
interface ve 1 is on vlan 10 voip. 192.168.10.252/24
interface ve 2 is on vlan 20 data 192.168.20.252/24
I added this line to interface ve 2 ip helper-address 1 192.168.20.9
All switch ports are tagged and use dual mode vlan 20. I try to manually tag the phone to vlan 10. But I'm not able to have an IP from dhcp server. Am I missing something with ip helper ?
Also, do I need to configure ip helper on both switches ?
See attached file for config.