hmc cabling and fsp
TRANSCRIPT
Cabling the HMC and FSP
Technote
This document shows how to cable the Ethernet connection from the HMC to the managed Server. It assumes the typical
configuration where the HMC eth0 port is configured as a DHCP server on a private network and cabled to the HMC1 on the
managed server. The location of the HMC eth0 port varies depending not only on the HMC model but also the number and
type of adapters as well as the version of HMC. The information contained in this document shows the typical location of
eth0 however it is highly recommended that you confirm the location by testing for link status changes.
Locating eth0 using link status
This technique assumes you have a good CAT 5 or CAT 6 Ethernet cable connected to another active Ethernet port (the FSP
HMCx port or a switch port). To use link status to locate eth0, do the following:
1. Check link status.
V7.3.3 and later: Click HMC Management , Test Network Connectivity , then click the Ethernet Settings tab. Note
the Link detected setting for each adapter (yes/no).
All Versions: Open a restricted shell terminal as hscroot. Enter the command tail -F /var/log/messages
2. Remove/Insert the cable to the typical eth0 location to change the link status.
Wait one minute for link status to change.
3. Check link status again.
V7.3.3 and later: Click the refresh button.
All Versions: Check the log for an entry with "ethx: .... Link is up" (active) or "ethx ... Link is down" (unplugged).
If the adapter reporting the link status change is not eth0, try another adapter.
Note: Starting with V7R3.3.0, the first boot after install fixes the eth0 interface location to a particular adapter by saving the location to disk. To check for this,you can view (in other words, with cat, less, or more) the net-persisent-names file located in /etc/udev/rules.d/30-net_persistent_names.rules. This file is used to
associate the interface to particular port so it will not change when adding an optional Ethernet adapter.
Rack HMC Model (7042-CR5 and CR6)
The additional dual port Ethernet card is standard on the CR5. eth0 is the port labeled Ethernet 1.
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Document information
i family
Software version:
V5R3M0, V5R3M5,
V5R4M0, V5R4M5,
V6R1M0, V6R1M1
Operating system(s):
OS/400
Reference #:
357481422
Modified date:
2011-10-31
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Rack-Mounted HMC Model (7310/7042-CR4)
Planar Board Ethernet 1
connecter (left)
Planar Board Ethernet 2
connector (right)
Expansion adapter slot
(right)
Expansion adapter (left)
eth0 eth1 both empty
eth2 eth3 eth0 eth1
Note: When an optional 2 port PCI-X Ethernet adapter is installed in either of the optional PCI expansion slots, the right side Ethernet port becomes eth0(stamped act/lnk A). Port A is normally the right port when viewing the HMC from the back of the machine.
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Rack-Mounted HMC Model (7310/7042-CR3)
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Planar Board Ethernet 1
connecter (left)
Planar Board Ethernet 2
connector (right)
Expansion adapter slot
(right/only)
Expansion adapter slot (left)
eth0 eth1 both empty
eth1 eth2 eth0
eth2 eth3 eth0 eth1
Note: When an optional FC.5706, 2 port PCI-X Ethernet adapter is installed in either of the optional PCI expansion slots, the right side Ethernet port becomeseth0 (stamped act/lnk A). Port A is normally the right port when viewing the HMC from the back of the machine.
Rack-Mounted HMC Model (7310-CR2)
Back view of a rack-mounted HMC
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The location of the eth0 varies depending on the number of Ethernet adapters.
Planar Board Ethernet 1 connecter
(lower)
Planar Board Ethernet 2 connector
(upper)
Expansion adapter slot (either)
eth0 eth1 both empty
eth1 eth2 eth0
Floorstanding HMC Model (7310/7042-C06 and 7042-C07)
Back view of a stand-alone HMC
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eth0 will be the planar board connection (Ethernet) except when there is an Ethernet expansion adapter installed. When an Ethernet adapter is installed in an
expansion slot, it will become eth0, depending on what other options are installed. The general rules for the location of eth0 include:
o If there is only one single port Ethernet adapter installed in an expansion slot, it will be eth0.
o If there is only one dual port Ethernet adapter (FC.5706) installed in an expansion slot, the port stamped act/lnk A will be
eth0. The port marked A is normally the right port when viewing the HMC from the back of the machine.
One way to identify which port of which adapter is eth0 is to check the MAC address. On the HMC, run netstat -i -e from
the restricted shell or view lan adapter settings in Change network settings. This will show the MAC address of each
adapter for each interface. In the case of a dual Ethernet port adapter (FC.5706 ), the two MAC addresses will be the same
except for the last digit. eth0 will be the lower address (A), eth1 will be the larger address (usually A+1 or A+2 in hex).
For example:
eth0 00:14:5E:FB:91:10
eth1 00:14:5E:FB:91:12
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For some example configurations, refer to Table 3 .
Table 3. eth0 with 7310-C07, C06, C05 HMC
Planar Board Port Expansion Slot Expansion Slot Expansion Slot
eth0 empty empty empty
eth1 emptyeth0
(1 GB or 10/100 e-net)empty
eth2 emptyeth0, eth1
(dual port Ethernet adapter)empty
eth3eth*
(1 GB or 10/100 e-net)
eth*, eth*
(dual port Ethernet adapter)empty
eth4eth*, eth*
(dual port Ethernet adapter)
eth*, eth*
(dual port Ethernet adapter)empty
eth5eth*, eth*
(dual port Ethernet adapter)
eth*, eth*
(dual port Ethernet adapter)
eth*
(1 GB or 10/100 e-net)
Floorstanding HMC Model (7310/7042-C05)
Back view of a stand-alone HMC
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See Table 3 above.
Desktop HMC Models (7310/7042-C04)
Back view of a stand-alone HMC
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eth0 will be the planar board connection (Ethernet port 1) except when there is an Ethernet expansion adapter installed. Unlike like the 7310-C03, when a 10/100
e-net Ethernet adapter is installed in an expansion slot, it might become eth0, depending on the what other options are installed. The general rules for the location
of eth0 include:
o If there is only one 10/100 e-net adapter installed in an expansion slot, it will be eth0.
o If there are two 10/100 e-net adapters installed, the adapter in slot 1 will be eth0.
o If there is a 1 GB adapter and a 10/100 adapter installed, independent of position, the 1 GB adapter will be eth0 and
the 10/100 adapter will be eth1.
o If there are two 1 GB e-net adapters installed, the adapter in slot 1 will be eth0.
o If there is only one 1 GB e-net adapters installed in an expansion slot, it will be eth0.
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For some example configurations, refer to Table 2 .
Table 2. eth0 with 7310-C04 HMC
Planar Board port 1 Expansion slot 3 Expansion slot 2 Expansion slot 1
eth0 empty empty empty
eth1 emptyeth0
(1 GB or 10/100 e-net)empty
eth2 emptyeth1
(10/100 e-net)
eth0
(10/100 e-net)
eth1eth0
(1 GB or 10/100 e-net)empty empty
eth2 emptyeth0
(1 GB e-net)
eth1
(10/100 e-net)
eth2 emptyeth1
(1 GB e-net
eth0
(1 GB e-net)
eth2eth0
(1 GB e-net)
eth1
(10/100 e-net)empty
Desktop HMC Models (7310-C03)
Back view of a stand-alone HMC
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5
eth0 will be the planar board connection (Ethernet port 1) except when there is a 1 GB Ethernet expansion adapter (FC.5701) in slot 2 or 3. Refer to Table 1 .Do not install an FC.5701 1 GB Ethernet PCI card in slot 1.
Table 1. eth0 with 7310-C03 HMC
Planar Board port 1 Expansion slot 3 Expansion slot 2 Expansion slot 1
eth0 empty empty empty
eth1 emptyeth0
(1 GB e-net)empty
eth2eth1
(1 GB e-net)
eth0
(1 GB e-net)empty
eth1eth0
(1 GB e-net)empty empty
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eth1eth0
(1 GB e-net)empty
eth2
(any e-net)
eth2eth0
(1 GB e-net)
eth1
(10/100 e-net)empty
eth0 10/100 Ethernet adapters do not change the location of eth0
POWER7 ServersNote: On Power7 Systems, the FSP ports are no longer labeled HMC1 and HMC2.
8231-E1C POWER 710
8231-E2C POWER 730
8202-E4C POWER 720
8205-E6C POWER 740
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8202-E4B POWER 720
8205-E6B POWER 740
9117-MMB IBM Power 770
9179-MHB IBM Power 780
9117-MMC IBM Power 770
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9179-MHC IBM Power 780
8233-E8B IBM Power 750 Express
8236-E8C IBM Power 755
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POWER6 Servers
View of POWER6 525 models 9407-M15, 9408-M25, 8203-E4A
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View of POWER6 550 models 9409-M50, 8204-E8A
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View of POWER6 570 models 8234-EMA, 9117-MMA, and 9406-MMA
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POWER 5 Servers
Rear View of a Model 9406-520,515,525 Server
Rear View of a Model 9406-550 Server
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Rear View of a Model 9406-570 Server
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View of a Model 595
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