Unable to discover device in DCNM

[CiscoPurpleBelt]

I have 9k series Nexus switches added to DCNM. Everytime I make a change let's say change ip or something, seems like all the devices added go to "unreachable/red or grey state". I click rediscover and it still is not green/normal reachable state. Any ideas guys?

[Branden Varney]

Hi,

What changes specifically do you make and where do you make them?

Changing something such as the mgmt IP of the device will cause the reaction you stated.

[CiscoPurpleBelt]

Yes that is exactly what I did. Seems most times it comes back on its own after few minutes.

Now problem I am experiencing is error when attempting to "Save and Deploy". Any ideas? Do you happen to have any good documentation for programming a fabric with DCNM version 11?

[CiscoPurpleBelt]

So I figured out is was global creds within DCNM.

Right now I am trying to configure things so it has a good flow and was wondering if you could give a little advice in regards to VXLAN..

So let' say I have the following:

Network ID:50500

Network Name: Test_50500

VRF Name: TestVRF_50500

VLAN ID: 500

SVI IP: 172.16.50.1

Is this a good practice so things can be remembered better?

Where I am troubled, what subnets  to people usually use for vlans abouv 255 because obviously know octect can be 256. What if it is vlan 1200 or 10200?