Dell POWEREDGE M1000E - Manual (Page 506)

506 Fabric OS Administrator’s Guide
53-1002745-02
Frame monitoring
20
NOTE
The Advanced Performance Monitoring license is required to use the fmMonitor command. The
monitoring functionality also requires the Fabric Watch license. When you configure actions and
alerts through the fmMonitor command, Fabric Watch uses these values and generates alerts
based on the configuration. If you do not have a Fabric Watch license, these values are ignored.
Refer to the Fabric Watch Administrator’s Guide for more information about using Fabric Watch.
The maximum number of frame monitors and offsets per port depends on the platform. Table 74
shows the maximum number of frame monitors, in any combination of standard and user-defined
frame types, and the maximum number of offsets per port.
The actual number of frame monitors that can be configured on a port depends on the complexity
of the frame types. For trunked ports, the frame monitor is configured on the trunk master.
Static offsets are pre-set with offset/value combinations. Brocade also supports additional
dynamic offsets. When a user-specified offset and value combination matches that already
allocated by a Brocade application, resources are shared. The maximum number of configurable
offsets by fmMonitor may increase or decrease as a result of resource sharing.
Virtual Fabrics considerations: Frame monitors are not supported on logical ISLs (LISLs), but are
supported on ISLs and extended ISLs (XISLs).
Creating frame types to be monitored
In addition to the standard frame types, you can create custom frame types to gather statistics that
fit your needs. To define a custom frame type, you must specify a series of offsets, bitmasks, and
values. For all transmitted frames, the switch performs the following tasks:
• Locates the byte found in the frame at the specified offset.
• Applies the bitmask to the byte found in the frame.
• Compares the new value with the given value.
• Increments the filter counter if a match is found.
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.
TABLE 74 Maximum number of frame monitors and offsets per port
Platform Maximum number of frame monitors
per port Maximum number of offsets
per port
Brocade 300, 5300, 5410, 5424, 5450,
5460, 5470, 5480, and 7800 8 13 1
1. For switches in Access Gateway mode, the maximum number of offsets per port is 7.
Brocade 5100, 6505, 6510, 6520, 8000,
VA-40FC, DCX, DCX-4S, DCX 8510, and
Brocade Encryption Switch 12 25 2
2. For switches in Access Gateway mode, the maximum number of offsets per port is 15.