IBM RS/6000 SP, Maintenance Information

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MAP 0490: Network Problem
MAP 0490: Network Problem
There are several communication adapters supported for node-to-node (network) communication,
including:
Ethernet Thin (Coax) Mandatory: Used for installation/boot LAN
Ethernet Thick Mandatory: Used for installation/boot LAN
Ethernet TTP Mandatory: Used for installation/boot LAN
Switch Adapter Application high-speed node-to-node communication
Token-Ring Customer use
FDDI (Fiber Optic) Customer use
001
Attention: The processor node(s) must be removed from active configuration before continuing. If
processor node(s) is/are off, continue; otherwise, ask customers to initiate shutdown procedure and
power-off processor node(s) from the control workstation, or defer maintenance until all jobs are com-
pleted. Powering off a processor node(s) in a parallel environment will cause all jobs to flush from the
queue and switch initialization to rerun.
Attention: Servicing a processor node with the High Performance Switch (HiPS) feature or Scalable
POWERparallel Switch (SPS) feature installed, will impact the entire switch network, unless the processor
node has already been powered off (or fenced) and/or the switch data cable has been disconnected.
– Refer to "Service Position Procedures" in
IBM RS/6000 SP: Maintenance Information, Volume 3,
Locations and Service Procedures for placing or removing processor node(s) in/from service position.
– Refer to "Viewing Switch Partitions" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations
and Service Procedures for locating and fencing/unfencing nodes within a switch partition.
– In order to service the LAN, you must determine the topology (wiring) of the LAN. Contact the System
Administrator to obtain a copy of the machine's Ethernet topology. The topology tells you which
processor nodes are connected together inside the frame, and where group(s) of processor nodes are
connected outside the frame.
– Perform "Checking Network (LAN) Status" in
IBM RS/6000 SP: Maintenance Information, Volume 3,
Locations and Service Procedures.
– Go to Step 002.
002
– Based on the adapter name, use the following table to continue service:
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RS/6000 SP MAPs