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Table Of Contents
Fabric OS Administrator’s Guide 397
53-1001763-02
Trunk monitoring
17
Limitations of Top Talker monitors
Be aware of the following when using Top Talker monitors:
• Top Talker monitors cannot detect transient surges in traffic through a given flow.
• You cannot install a Top Talker monitor on a mirrored port.
• Top Talker can monitor only 10,000 flows at a time.
• Top Talker is not supported on VE_Ports, EX_Ports, and VEX_Ports.
• The maximum number of F_Port Top Talker monitors on an ASIC is 16. If Virtual Fabrics is
enabled, the maximum number of F_Port Top Talker monitors on an ASIC is 8.
Trunk monitoring
To monitor E_Port (ISL) and F_Port trunks, you can set monitors only on the master port of the
trunk. If the master changes, the monitor automatically moves to the new master port.
If a monitor is installed on a port that later becomes a slave port when a trunk comes up, the
monitor automatically moves to the master port of the trunk.
Note the following:
• End-to-end monitors are not supported for ISLs.
• For F_Port trunks, end-to-end masks are allowed only on the F_Port trunk master. Unlike the
monitors, if the master changes, the mask does not automatically move to the new master
port.
• Brocade 300 platforms support eight frame monitors for trunks.
• The Brocade 4100, 4900, 5000, 5100, 5300, 5410, 5424, 5450, 5480, 7500, 7500E, 7600,
7800, 8000, VA-40FC48000, Brocade Encryption Switch, Brocade DCX, and DCX-4S platforms
support 12 frame monitors for trunks.
• For the Brocade 8000, trunk monitoring is supported only on the FC ports and not on the CEE
ports.
Displaying end-to-end and ISL monitor counters
You can use this procedure display the end-to-end or ISL monitors on a specified port. For
end-to-end counters, you can display either the cumulative count of the traffic detected by the
monitors or a snapshot of the traffic at specified intervals.
1. Connect to the switch and log in as admin.
2. Enter the perfmonitorshow command.
perfmonitorshow --class monitor_class [slotnumber/]portnumber [interval]
Example of displaying an end-to-end monitor on a port at 10-second intervals
switch:admin> perfMonitorShow --class EE 4/5 10
Showing EE monitors 4/5 10: Tx/Rx are # of bytes
01234
--------- --------- --------- --------- ---------
Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx
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