Setting A Mask For End-To-End Monitors - HP StorageWorks 8B - FC Entry Switch User Manual

3
Using Advanced Performance Monitoring
Monitor 0 counts the frames that have an SID of 0x051200 and a DID of 0x111eef. For monitor 0,
RX_COUNT is the number of words from Host A to Dev B, CRC_COUNT is the number of
frames from Host A to Dev B with CRC errors, and TX_COUNT is the number of words from
Dev B to Host A.
Monitor 1 counts the frames that have an SID of 0x111eef and a DID of 0x051200. For monitor 1,
RX_COUNT is the number of words from Dev B to Host A, CRC_COUNT is the number of
frames from Dev B to Host A with CRC errors, and TX_COUNT is the number of words from
Host A to Dev B.
Note:
Figure 3-2
specified SID-DID pair.
Figure 3-2

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. With no mask set, the frame must match the entire
SID or DID to trigger the monitor counter. By setting a mask, you can choose to have the frame
match only one or two of the three fields (Domain ID, Area ID, AL_PA) to trigger the monitor.
Note:
The mask is specified in the form "dd:aa:pp" where dd is the Domain ID mask, aa is the Area ID
mask, and pp is the AL_PA mask. The values for dd, aa, and pp are either ff (the field must match)
or 00 (the field is ignored).
3-4
End-to-end performance monitoring monitors traffic on the receiving port respective to the
SID only. In Figure 3-1, if you add a monitor to port 2 specifying Dev B as the SID and
Host A as the DID, no counters are incremented.
Valid:
perfAddEEMonitor 2, "0x051200", "0x111eef"
Not valid:
perfAddEEMonitor 2, "0x111eef", "0x051200"
shows several switches and the proper ports on which to add performance monitors for a
SID
0x051200
Host
. . .
A
DID
0x051200
Host
. . .
A
Proper placement of end-to-end performance monitors
You can set only one mask per port. The mask is applied to all of the end-to-end monitors
on a port. If you subsequently create new monitors on the port, the mask is applied to these
new monitors as well. The counters are reset when you set the mask.
Add monitors here
. . . . . .
Add monitors here
. . . . . .
Advanced Performance Monitoring User's Guide
DID
0x111eef
. . .
Dev
B
SID
0x111eef
. . .
Dev
B