Hi,

What firmware version are you using? Are you using the out of band management or in band management?

Try updating the firmware http://www.dell.com/support/home/us/en/19/Drivers/DriversDetails?driverId=P3F19&fileId=3594871950&osCode=NAA&productCode=networking-n4000-series&languageCode=en&categoryId=NI

There are some fixes that may help. 

console(config-if-vlan1)#ip address 172.16.3.9 255.255.0.0 secondary

Failed to set IP address on interface.

console(config-if-vlan1)#ip address 172.16.3.9 255.255.0.0

console(config-if-vlan1)#exi

console(config)#exi

console#ping 172.16.3.9
 Pinging 172.16.3.9 with 0 bytes of data:

----172.16.3.9 PING statistics----
4 packets transmitted, 0 packets received, 100% packet loss
round-trip (msec) min/avg/max = <10/<10/<10

In band management

Ver 6.2.7.2

It seems that once I first set an IP and gateway ten it sets it in stone and cannot be changed

it can be vlan1 or any other vlan I create one crack at it and then its over :(

Hi,

I guess, this would be the case if the vlan is down.

Is there any active switch port in vlan 1?

Cheers,

Robin