b interface show: unpopulated vs down ?

Hi there.

I couldn't find this in the Big-IP System and Network Management nor the Ask F5. Hoping someone here can help me

When I type in a "b interface show" I get the below:

[root@secondary:Standby] config  b interface show
interface   speed   pkts   pkts   pkts   pkts   bits   bits errors trunk
             Mb/s     in    out   drop   coll     in    out
 mgmt DN   100 FD      0      0      0      0      0      0      0
  1.1 UP  1000 FD 454.9M 490.7M  13650      0 596.0G 469.3G      0
  1.2 UP  1000 FD 256.5M 249.9M 2.384M      0 293.2G 158.2G      0
  1.3 UP   100 FD 32.19M 4.161M 2.894M      0 26.84G 25.79G      0
  1.4 DN  1000 FD      0      0      0      0      0      0      0
  2.1 MS  1000 FD      0      0      0      0      0      0      0
  2.2 MS  1000 FD      0      0      0      0      0      0      0

What is the "DN" vs the "MS" ? When I look on the gui, it says 1.4 is "DOWN" and 2.1 and 2.2 are "UNPOPULATED"?

The longer version is that we are adding another VLAN to our network and my manager

asked me if we had any free interfaces to do so. Physically there are no cables

plugged in to 1.4, 2.1, and 2.2. I'm guessing we can use 1.4. I was just curious

what those statuses meant.

Can someone explain what that column means?

Thanks,

Ben