LTM show sys ha-mirror command

Greetings, This seems a newer and not very well documented command, so I took a few minutes to see how this works. I don't think mirroring will work for you based on what you've shown and my testing. Here are the results:

I initially had the "closed" status as well. I set up mirroring and it did not work. I then realized there were no mirroring addresses defined in my CM config. To check:

tmsh list cm device mirror-ip
cm device lc.one.test.net {
    mirror-ip 10.12.23.120
}
cm device lc.two.testnet {
    mirror-ip 10.12.23.121
}

Then the status changed to the following:

----------------------------------------------------------------------------------------------------------------
Sys::HA Mirror Status
----------------------------------------------------------------------------------------------------------------
Traffic Group      TMM  Primary  Secondary  Aborts  Overflows  Errors  Buffered  L4 Mirror  L7 Mirror  L7 Failed
----------------------------------------------------------------------------------------------------------------
traffic-group-1  [0.0]    delay     closed       0          0       7         0          0          0          0
traffic-group-1  [0.1]    delay     closed       0          0       7         0          0          0          0

Still no mirroring occurring. I then realized that each LTM had a different number of CPUs. So I corrected that and finally mirroring began to work:

 show sys connection type mirror
Sys::Connections
10.12.23.139:55523  10.12.23.137:22  10.12.23.121:55523  10.12.23.27:22  tcp  1  (tmm: 1)  none
Total records returned: 1

------------------------------------------------------------------------------------------------------------------
Sys::HA Mirror Status
------------------------------------------------------------------------------------------------------------------
Traffic Group      TMM    Primary  Secondary  Aborts  Overflows  Errors  Buffered  L4 Mirror  L7 Mirror  L7 Failed
------------------------------------------------------------------------------------------------------------------
traffic-group-1  [0.0]  connected     closed       0          0       2         0          0          0          0
traffic-group-1  [0.1]  connected     closed       0          0       2         0          0          0          0
traffic-group-1  [0.2]  connected     closed       0          0       2         0          0          0          0
traffic-group-1  [0.3]  connected     closed       0          0       2         0          0          0          0