384 Fabric OS Administrator’s Guide
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Advanced Performance Monitoring overview
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•ISL monitors measure the traffic transmitted through an InterSwitch Link (ISL) to different
destination domains.
•Top Talkers monitors measure the flows that are major consumers of bandwidth on a switch or
port.
The type of monitors supported depends on the switch model, as shown in Table 81.
NOTE
Advanced Performance Monitoring is not supported on VE_Ports and EX_Ports. If you issue
commands for any Advanced Performance Monitors on VE_Ports or EX_Ports you will receive error
messages.

Virtual Fabrics considerations for Advanced Performance Monitoring

In a fabric with Virtual Fabrics enabled, the number of logical switches that can be configured with
monitors is restricted. Table 82 lists the platforms that support logical switches and, for each
platform, the maximum number of logical switches that can support performance monitors.
Each logical switch can have its own set of performance monitors. The installation of monitors is
restricted to the ports that are present in the respective logical switch.
•Top Talker and end-to-end monitors are supported on the default logical switch, the base
switch, and user-defined logical switches.
•Frame monitors are not supported on logical ISLs (LISLs) in user-defined logical switches.
•ISL monitors are not supported on any of the platforms listed in Table 82.
If you move a port from one logical switch to another, the behavior of monitors installed on that port
is as follows:
•Frame monitor: Any frame monitors on the port are deleted. To keep the frame monitor, you
must manually install it on the port after the move.
TABLE 81 Types of monitors supported on Brocade switch models
Platform Monitors: EE Frame ISL Top Talker
Brocade 300, 5300, 7800 Yes Yes No Yes
Brocade 5410, 5424, 5450, and 5480 Yes Yes No No
Brocade 4100, 4900, 5000, 7500, 7500E, 7600, and 48000 Yes Yes Yes Yes
Brocade 5100, 80001, VA-40FC, Brocade Encryption Switch,
Brocade DCX, Brocade DCX-4S
1. For the Brocade 8000, performance monitoring is supported only on the FC ports and not on the CEE ports.
Yes Yes No Yes
TABLE 82 Number of logical switches that support performance monitors
Platform Maximum number of logical switches supported Maximum number of logical switches on which
monitors are supported
Brocade DCX 8 4
Brocade DCX-4S 8 4
Brocade 5100
Brocade VA-40FC
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Brocade 5300 4 3