Dell PowerConnect Brocade 300 Fabric OS Administrator's Guide v7.1.0 - Page 506

20 Frame monitoring 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. TABLE 74 Platform Maximum number of frame monitors and offsets per port Maximum number of frame monitors per port Maximum number of offsets per port Brocade 300, 5300, 5410, 5424, 5450, 8 131 5460, 5470, 5480, and 7800 Brocade 5100, 6505, 6510, 6520, 8000, 12 252 VA-40FC, DCX, DCX-4S, DCX 8510, and Brocade Encryption Switch 1. For switches in Access Gateway mode, the maximum number of offsets per port is 7. 2. For switches in Access Gateway mode, the maximum number of offsets per port is 15. 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. 506 Fabric OS Administrator's Guide 53-1002745-02