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Cabling a 7063-CR2 HMC
If the 7063-CR2 HMC is installed in a rack, cabling can be started. The following description is a very shortened description, which is mainly about showing the possibilities for cabling the network ports. For detailed information on cabling the HMC, the official IBM documentation should be consulted: Installing the IBM Power Systems HMC (7063-CR2) into a rack – IBM Documentation.
On the back of the 7063-CR2 there are 2 USB ports to which a keyboard and mouse can be connected. There is a VGA port for connecting a screen.
A schematic view of the back can be obtained with the LPAR tool and the command “hmc view 7063-CR2”:
$ hmc view 7063-CR2
HMC 7063-CR2
rear view
+----------------------------------------------------+----------++-----------+
| |PS1 ||PS2 |
| | || |
| | || |
| +----++----+ | || |
+----++----++----++----+ |USB4||USB3| +----+ +-----+ | || |
|ETH3||ETH2||ETH1||ETH0| +----++----+ | M | | VGA | | || |
+----++----++----++----+--------------+----+-+-----+-+----------++-----------+
$
The two USB ports are labeled USB3 and USB4 in the schematic view, the VGA port is labeled VGA. The VGA port only supports the setting 1024×768 at 60 Hz. The monitor cable may be a maximum of 3m long.
The 7063-CR2 HMC has a baseboard management controller. There are two options for connecting the BMC to the network:
- Using the dedicated IPMI network port (labeled “M”), or
- Using the network port ETH0 (labeled “0”)
The IPMI port “M” belongs exclusively to the BMC. The Ethernet port “0” can be used shared by BMC and HMC:
- Advantage: A network cable and a switch port are saved.
- Disadvantage: BMC and HMC have to share the bandwidth of the common port.
If the dedicated IPMI port “M” is used for the BMC, then a separate Ethernet port must be used for the public or open network of the HMC. Either one of the 4 ports of the built-in quad Ethernet card can be used, or if the HMC has an optional dual 10Gb card, one of these two ports can be used. If a port of the built-in quad card is used, it is recommended to use the Ethernet port ETH0 (labeled “0”). This leaves the option to acess BMC and HMC together via this port at a later point in time. If the optional dual 10Gb card is available, one of these ports could be chosen due to the higher bandwidth (10Gb instead of 1Gb for the built-in quad card).
In environments with separate private or service networks, an additional network port is required to connect the managed systems. A 10 Gb port should not be used for this, as the managed systems FSP does not support 10 Gb. In principle, any available port of the 4 ports on the built-in quad card can be used, but port ETH0 (labeled “0”) should not be selected because the BMC can also be reached by this port.
If necessary, additional network ports can of course be cabled.
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