Documentation, Support, and Training
Check Network Management Port Status LEDs
Check Power Supply Status LEDs
Understanding Routing Through the Switch
CXP Connectors and Link LEDs to Switch Chip Port Routes
Switch Chip Port to Switch Chip Port Routes
Switch Chip Port to CXP Connectors and Link LED Routes
Signal Route Through the Switch
Administrative Command Overview
Display Switch Environmental and Operational Data
Display Switch Firmware Versions
Locate a Switch Chip or Connector From the GUID
Display Switch Chip Boot Status
Display Switch Chip Port Status
Monitoring the InfiniBand Fabric
Identify All Switches in the Fabric
Identify All HCAs in the Fabric
Display the InfiniBand Fabric Topology
Display a Route Through the Fabric
Display the Link Status of a Node
Display Data Counters for a Node
Display Low-Level Detailed Information About a Node
Display Low-Level Detailed Information About a Port
Restart the Management Controller
Recover Ports After Switch Chip Reset
Change the Administrator Password
Controlling the InfiniBand Fabric
Perform Comprehensive Diagnostics for the Entire Fabric
Perform Comprehensive Diagnostics for a Route
Determine Changes to the InfiniBand Fabric Topology
Find 1x or SDR or DDR Links in the Fabric
Determine Which Links Are Experiencing Significant Errors
Controlling the Subnet Manager
Set the Subnet Manager Priority
Start the Subnet Manager With the opensmd Daemon
Global unit identifiers (GUIDs) are unique 64-bit strings that identify nodes such as switches and channel adapters. For the Sun Datacenter InfiniBand switches, GUIDs are modified to identify the node’s role and location. The following table describes the GUID’s structure.
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The five fields of the GUID are described as follows:
MAC – Bits 63 through 16 are the Machine Allocation Code (MAC) address. A standard for network components, the MAC address is typically provided by manufacturers in a 6-byte, colon delimited string. For example, 00:11:22:33:44:55.
Type – Bits 15 through 12 is the type of board on which the node resides.
Pos – Bits 11 through 8 identify the position of the board within the switch.
Device – Bits 7 through 4 identify which device on the board has that node.
Num – Bits 3 through 0 are numbers reserved for the programs which modify the GUID. In most occurrences, the value is 0x2.
The following table provides values for Type, Pos, Device.
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For example, given the following output from the ibswitches command:
Switch : 0x0021283a8620b0e0 ports 36 "Sun DCS 72 QDR switch 1.1(FC)" base port 1 lid 24 lmc 0
The GUID is 0x0021283a8620b0e0 or 0021283a8620 B 0 E 0. Using the information provided in this topic:
The MAC address is 0x0021283a8620 or 00:21:28:3A:86:20.
The type is 0xB, or a 72-port board.
The position is 0x0.
The device is 0xE, or I4 switch chip E.
The number is 0.
Switch Reference, ibnetdiscover command
Switch Reference, ibnodes command
Switch Reference, ibswitches command
Switch Reference, ibhosts command