No DHCP deployed to VLAN

[pochlikimhun]

Hi everyone,

can anyone help me with this LAB? I cannot deployed DHCP from Server Zone to VLAN 10-20.

[David Ruess]

Hello,

A few things need to happen for DHCP to function correctly. Mentioned below are some:

1. Have you configured the DHCP address pool and configured them in the correct subnet(s)?

2. Are VLANs 10 and 20 configured on all switches and trunks leading up to the router?

3. Do you have IP Helper addresses on the SVIs (Switch) or Subinterfaces (Router) to allow the DHCP messages to traverse a L3 boundary?

We can better help you if you attach your .pkt file in a zip folder for us to look at and help you further.

-David

[pochlikimhun]

Yes sir, DHCP can deploy only at the Server Zone excepted VLAN 10-20 cross OSPF

[M02@rt37]

Hello @pochlikimhun 

Where is your DHCP server on your topology ?

[Joseph W. Doherty]

Was just looking at the PT you've attached to your later reply.

Lots of issues that need addressing - pun not intended ; )

Your DSW3-Primary-1 and DSW4-Secondary-1 don't have SVIs defined for VLANs 10 or 20 gateways, which should, in turn, have helper IPs pointing to your DHCP server at 172.168.0.5.

I'm assuming you also want to take advantage of the physical redundancy.  If so, that will need some work, both at the client side and at the routing side for those VLANs, somewhat like you've done for VLAN 10 (which might need some reconfiguration too, although I haven't studied it).