Adding End-To-End Monitors; Setting End-To-End Monitors On A Port - HP AA979A - StorageWorks SAN Switch 2/8V Administrator's Manual

Adding end-to-end monitors

An end-to-end monitor counts the following items for a port: number of words received, number of words
transmitted, and number of CRC errors detected in frames.
4/16 SAN Switch and 4/8 SAN Switch, SAN Switch 2/8V, SAN Switch 2/16V, SAN Switch 2/32, and
SAN Director 2/128 models allow up to eight end-to-end monitors.
The SAN Switch 4/32, 4/64 SAN Switch, 400 MP 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 number of interswitch links
configured on the switch affects the amount of resources available for end-to-end monitors.)
The FC4-48 blade allows end-to-end monitors on all 48 ports.
For the FC4- 1 6IP, end-to-end monitors are supported on the ASIC FC ports (ports 0 through 7), but not on
the GbE ports. At the time of this document's release, HP does not support the FC4- 1 6IP blade. Consult
http://www.hp.com
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 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 upon the PID format
used by the fabric. Refer to
Figure 18 shows two devices:
• Host A is connected to domain 5 (0x05), switch area ID 18 (0x12), AL_PA 0x00 on Switch X
• Dev B is a storage device connected to domain 17 (0x1 1), switch area ID 30 (0x1e), AL_PA 0xef on
Switch Y.
Figure 18

Setting end-to-end monitors on a port

SID
0x051200
Host
A
Monitor 0
domain 0x05, switch area ID 0x12
AL_PA 0x00
NOTE: End-to-end performance monitoring looks at traffic on the receiving port respective to the SID only.
In Figure 18, if you add a monitor to slot 2, port 2 on Switch x, specifying Dev B as the SID and Host A as
the DID, no counters (except CRC) will be incremented.
To monitor the traffic from Host A to Dev B
switch:admin> perfaddeemonitor 2/2, "0x051200" "0x111eef"
End-to-End monitor number 0 added.
314 Administering Advanced Performance Monitoring (APM)
for the latest, updated information.
"Configuring the PID
Switch x Switch y
. . . . . .
Monitor 1
domain 0x11, switch area ID 0x1e
AL_PA 0xef
format" on page 381 for more information.
DID
0x111eef
Dev
B