The command “hmc lssysconn” can be used to display the connections of an HMC to managed systems. Alternatively, the command can display the list of IP addresses that are not automatically detected by the HMC.

To display all managed systems connected to HMC hmc01, simply specify the name of the HMC as the only argument:

$ hmc lssysconn hmc01
                             RESOURCE                                  
MTMS              STATE      TYPE      IPADDR      ALT_IPADDR   SP       SP_TYPE  SP_PHYS_LOC
9009-22A*8927C71  Connected  sys       10.0.0.246  unavailable  primary  fsp      U78D3.001.WZS03LD-P1-C1
9009-22A*89B1B61  Connected  sys       10.0.0.21   unavailable  primary  fsp      U78D3.001.WZS0CK8-P1-C1
9009-22A*897DFD1  Connected  sys       10.0.0.19   unavailable  primary  fsp      U78D3.001.WZS08NZ-P1-C1
8408-44E*89F284X  Connected  sys       10.0.0.16   unavailable  primary  fsp      U78C7.001.KIC4A99-P1-C5
8284-22A*323631X  Connected  sys       10.0.0.13   unavailable  primary  fsp      U78CB.001.WZS09TS-P1
9040-MR9*89F88EY  Connected  sys       10.0.0.122  unavailable  primary  fsp      U780C.ND1.CSS648Y-P1-C1
9105-22A*89B3562  Connected  sys       10.0.0.99   unavailable  -        ebmc     -
9105-22A*89B3592  Connected  sys       10.0.0.177  unavailable  -        ebmc     -
$

For each managed system, information such as the current status of the connection, IP address of the FSP or eBMC, type of service processor and more is displayed.

To display the list of IP addresses that are not automatically detected, the option “-D” (non-discoverable) must be used. Here is an example with an empty list (this should be the default):

$ hmc lssysconn -D hmc01
IPADDR
$

And another example with two IP addresses in this list:

$ hmc lssysconn -D hmc02
IPADDR
192.168.240.7
192.168.240.12
$

Managed systems with the IP addresses from this list (192.168.240.7 and 192.168.240.12) are not automatically recognized by the HMC hmc02!

If these IP addresses are to be used again, they must first be removed from this list, see “hmc rediscoversysconn” and “hmc mksysconn”.