8456ch_DS_HMC_Plan.fm Draft Document for Review December 5, 2019 4:33 pm Figure 8-14 Management Ethernet Settings 8.4.2 Private Networks The internal private networks (black and gray) are using the IP ranges of 172.x.x.x by default.  You need to make sure that the network which is used for the internal private network is not  interfering with outside network ranges used by any network that the management console  can reach.  If the default address range cannot be used because it conflicts with another network, you  can instead specify one of three optional addresses ranges. Table 8-2 shows the possible  options that can be chosen during installation. Table 8-2 Private Networks Setting Black Network (MC eht0) Gray network (MC eth3) Default 172.16.0.0. to 172.16.255.255 172.17.0.0 to 172.17.255.255 Option 1 10.235.0.0 to 10.235.2.255 10.236.0.0 to 10.236.2.255 Option 2 192.168.160.0 to 192.168.162.25 192.168.240.0 to 192.168.242.255 Option 3 9.15.0.0 to 9.15.2.255 9.16.0.0 to 9.16.2.255 The change of the internal private network is not the configuring of each individual network  interface. It is set as a whole setting for both black and gray networks in one step.  Figure 8-15 shows the how the setting is made., by selecting  HMC Management Query/Change IP Range Figure 8-15 Setting Private Network range 220  IBM DS8900F Architecture and Implementation