HP StorageWorks Fabric OS 6.1.1 administrator guide (5697-0235, December 2009)

344 Administering advanced performance monitoring
NOTE: The command examples in this chapter use the slot/port syntax required by 4/256 SAN Director
and DC Directors. For the 4/8 SAN Switch, 4/16 SAN Switch, SAN Switch 4/32, 4/64 SAN Switch,
SAN Switch 4/32B, 8/8 SAN Switch, 8/24 SAN Switch, 8/40 SAN Switch, 8/80 SAN Switch and the
400 Multi-protocol Router, use only the port number where needed in the commands.
End-to-end performance monitoring
End-to-end performance monitoring counts the number of words in Fibre Channel frames for a specified
Source ID (SID) and Destination ID (DID) pair. An end-to-end performance monitor includes these counts:
• RX_COUNT (words in frames received at the port)
• TX_COUNT (words in frames transmitted from the port)
To enable end-to-end performance monitoring, you must configure an end-to-end monitor on a port,
specifying the SID-DID pair (in hexadecimal). The monitor counts only those frames with matching SID and
DID.
Each SID or DID has the following three fields.
• Domain ID (DD)
• Area ID (AA)
• AL_PA (PP)
For example, the SID 0x118a0f denotes DD 0x11, AA 0x8a, and AL_PA 0x0f.
You can monitor end-to-end performance using the perfMonitorShow command, as described in
”Displaying monitor counters” on page 353. You can clear end-to-end counters using the
perfMonitorClear command, as described in ”Clearing monitor counters” on page 356.
End-to-end monitors
The SAN Switch 4/32, 4/64 SAN Switch, SAN Switch 4/32B, 8/40 SAN Switch, 8/80 SAN Switch,
400 Multi-protocol Router, and 4/256 SAN Director models allow up to 256 end-to-end monitors shared
by all ports in the same ASIC chip. The DC Director allows up to 1024 end-to-end monitors. (The number of
interswitch links configured on the switch affects the amount of resources available for end-to-end monitors.)
The 4/8 SAN Switch, 4/16 SAN Switch, 8/8 SAN Switch, and 8/24 SAN Switch allow up to eight
end-to-end monitors.
The FC4-48 blade allows end-to-end monitors on all 48 ports.
For the FC4-16IP blade, end-to-end monitors are supported on the FC ports (ports 0 through 7), but not on
the GbE ports.
You cannot add end-to-end monitors to interswitch links. Identical end-to-end monitors cannot be added to
the same port. Two end-to-end monitors are considered identical if they have the same SID and DID values
after applying the end-to-end mask.
The monitor count is qualified using either of the following conditions:
• For frames received at the port with the end-to-end monitor installed, the frame SID is the same as
SourceID and the frame DID is the same as DestID. The RX_COUNT and CRC_COUNT are updated
accordingly.
• For frames transmitted from the port with the end-to-end monitor installed, the frame DID is the same as
SourceID and the frame SID is the same as DestID. The TX_COUNT and CRC_COUNT are updated
accordingly.
NOTE: The relationship between the area ID for a port and the port number depends on the PID format
used by the fabric. See ”Configuring the PID format” on page 451 for more information.