Technical data

Fabric OS Administrator’s Guide 14-9
Publication Number: 53-0000518-09
Monitoring Filter-Based Performance
14
• Applies the mask to the byte found in the frame.
• Compares the value with the given values in the perfAddUserMonitor command.
• Increments the filter counter if a match is found.
The following number of offsets can be specified:
• SilkWorm 3016, 3250, 3850, 3900, 12000, and 24000 models (Fabric OS v4.0.0 or later)
Up to two different offsets per port (one offset when FICON management server mode (FMS)
is enabled).
• SilkWorm 48000 model (Fabric OS v5.0.1 or later)
Up to 15 different offsets per port (14 offsets when fmsmode is enabled).
• SilkWorm 3200, 3800 models (Fabric OS v3.0.0 or later)
Up to three different offsets per port.
• SilkWorm 4100 model (Fabric OS v4.4.0 or later)
Up to 15 different offsets per port (14 offsets when FMS is enabled).
• SilkWorm 200E and 4012 models (Fabric OS v5.0.1)
Up to 7 different offsets per port (6 offsets when FMS is enabled).
You can specify up to four values to compare against each offset. If more than one offset is required to
properly define a filter, the bytes found at each offset must match one of the given values for the filter to
increment its counter. If one or more of the given offsets does not match any of the given values, the
counter does not increment. The value of the offset must be between 0 and 63, in decimal format. Byte
0 indicates the first byte of the Start of Frame (SOF), byte 4 is the first byte of the frame header, and
byte 28 is the first byte of the payload. Thus only the SOF, frame header, and first 36 bytes of payload
can be selected as part of a filter definition. Offset 0 is a special case, which can be used to monitor the
first 4 bytes of the frame (SOF). When the offset is set to 0, the values 0–7 that are checked against that
offset are predefined as shown in Table 14-3.
If the switch does not have enough resources to create a given filter, then other filters might have to be
deleted to free resources.
To add filter-based monitors
Table 14-3 Predefined Values at Offset 0
Value SOF Value SOF
0SOFf4SOFi2
1SOFc15SOFn2
2SOFi16SOFi3
3SOFn17SOFn3
switch:admin> perfaddusermonitor 4/2, “12, 0xff, 0x05, 0x08; 9, 0xff, 0x02” “FCP/IP”
User monitor #5 added
switch:admin> perfaddusermonitor 1/2, “0, 0xff, 6"
User Monitor #6 added