Thanks for your reply.

Under the current configuration we are successfully able to obtain IP addresses from the DHCP server which is located on the same host as the NPS role, when manually assigning a specific VLAN to a port. Furthermore it is also possible to ping said server. 

Please find attached the console output of the show dot1x command and the port configuration of our test port as well (g0/21).

User Name:admin

Password:********

console# show dot1x

802.1x is enabled

        Admin              Oper          Reauth   Reauth     Username

Port     Mode               Mode          Control  Period

-------- ------------------ ------------- -------- ---------- -----------------

gi1/0/1  Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/2  Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/3  Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/4  Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/5  Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/6  Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/7  Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/8  Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/9  Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/10 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/11 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/12 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/13 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/14 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/15 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/16 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/17 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/18 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/19 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/20 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/21 Auto               Unauthorized* Enabled  3600       n/a

gi1/0/22 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/23 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/24 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/25 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/26 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/27 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/28 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/29 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/30 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/31 Force Authorized   Authorized    Disabled 3600       n/a

gi1/0/32 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/33 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/34 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/35 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/36 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/37 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/38 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/39 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/40 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/41 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/42 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/43 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/44 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/45 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/46 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/47 Force Authorized   Authorized*   Disabled 3600       n/a

gi1/0/48 Force Authorized   Authorized*   Disabled 3600       n/a

te1/0/1  Force Authorized   Authorized    Disabled 3600       n/a

te1/0/2  Force Authorized   Authorized    Disabled 3600       n/a

* Port is down or not present

console# show interfaces switchport gigabitethernet 0/21

Gathering information...

Name: gi1/0/21

Switchport: enable

Administrative Mode: access (Inactive: dva)

Operational Mode: down

Access Mode VLAN: none

Access Multicast TV VLAN: none

Trunking Native Mode VLAN: 1

Trunking VLANs Enabled: 1,10,15,20,25,30,35,45,50,60,100

                       2-9,11-14,16-19,21-24,26-29,31-34,36-44,46-49,51-59,

                       61-99,101-4094 (Inactive)

General PVID: 1

General VLANs Enabled: none

General Egress Tagged VLANs Enabled: none

General Forbidden VLANs: none

General Ingress Filtering: enabled

General Acceptable Frame Type: all

General GVRP status: disabled

Customer Mode VLAN: none

Private-vlan promiscuous-association primary VLAN: none

Private-vlan promiscuous-association Secondary VLANs Enabled: none

Private-vlan host-association primary VLAN: none

Private-vlan host-association Secondary VLAN Enabled: none

DVA: enable

Classification rules:

Classification type Group ID VLAN ID

------------------- -------- -------

console#

console#

Hello all,

i have exactly the same problem here. We have a Dell 5548 and i cant get it work with DVA.

I would be glad to read another suggestion here.