Setting A Mask For End-To-End Monitors; Setting End-To-End Monitors On A Port; Proper Placement Of End-To-End Performance Monitors - HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual

Figure 35 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.
SID
0x051200
Host
A
Monitor 0
domain 0x05, switch area ID 0x12
AL_PA 0x00
Figure 35

Setting end-to-end monitors on a port

NOTE: End-to-end performance monitoring looks at traffic on the receiving port respective to the SID only.
In Figure 35, 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.
Monitoring the traffic from Host A to Dev B:
Add Monitor 0 to slot 2, port 2 on Switch x, specifying 0x051200 as the SID and 0x1 1 1eef as the DID, as
shown in the following example:
switch:admin> perfaddeemonitor 2/2, "0x051200" "0x111eef"
End-to-End monitor number 0 added.
Monitor 0 counts the frames that have an SID of 0x051200 and a DID of 0x1 1 1eef. For monitor 0,
RX_COUNT is the number of words from Host A to Dev B, TX_COUNT is the number of words from Dev B
to Host A, and CRC_COUNT is the number of frames in both directions with CRC errors.
Monitoring the traffic from Dev B to Host A:
Add Monitor 1 to slot 2, port 14 on Switch y, specifying 0x1 1 1eef as the SID and 0x051200 as the DID, as
shown in the following example.
switch:admin> perfaddeemonitor 2/14, "0x111eef" "0x051200"
End-to-End monitor number 1 added.
Monitor 1 counts the frames that have an SID of 0x1 1 1eef and a DID of 0x051200. For monitor 1,
RX_COUNT is the number of words from Dev B to Host A, TX_COUNT is the number of words from Host A
to Dev B, and CRC_COUNT is the number of frames in both directions with CRC errors.
Figure 36 shows several switches and the correct ports on which to add performance monitors for a
specified SID-DID pair.
SID
0x051200
Host
A
Figure 36

Proper placement of end-to-end performance monitors

Setting a mask for end-to-end monitors

End-to-end monitors count the number of words in Fibre Channel frames that match a specific SID/DID
pair. If you want to match only part of the SID or DID, you can set a mask on the port to compare only
certain parts of the SID or DID. By default, the frame must match the entire SID and DID to trigger the
monitor. By setting a mask, you can choose to have the frame match only one or two of the three fields
(Domain ID, Area ID, and AL_PA) to trigger the monitor.
Switch x Switch y
. . . . . .
Monitor 1
domain 0x11, switch area ID 0x1e
AL_PA 0xef
Add monitors here
. . . . . .
DID
0x111eef
Dev
B
. . . . . .
Fabric OS 6.1.x administrator guide 331
DID
0x111eef
Dev
B