Adding A Top Talker Monitor On An F_Port; Adding Top Talker Monitors On All Switches In The Fabric (Fabric Mode - Brocade Communications Systems 53-1001763-02 Administrator's Manual

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Top Talker monitors
The Top Talker monitor is based on SID/DID and not WWNs. Once Top Talker is installed on a switch
or port, it remains installed across power cycles.
Top Talkers supports two modes, port mode and fabric mode:
•
•
You can install Top Talker monitors either in port mode or fabric mode, but not both.
NOTE
A fabric mode Top Talker monitor and an end-to-end monitor cannot be configured on the same
fabric. You must delete the end-to-end monitor before you configure the fabric mode Top Talker.
How do Top Talker monitors differ from end-to-end monitors? End-to-end monitors provide counter
statistics for traffic flowing between a given SID-DID pair. Top Talker monitors identify all possible
SID-DID flow combinations that are possible on a given port and provides a sorted output of the top
talking flows. Also, if the number of flows exceeds the hardware resources, existing end-to-end
monitors fail to get real time data for all of them; however, Top Talker monitors can monitor all flows
for a given E_Port or F_Port.
Virtual Fabric considerations: All logical switches in the same chassis can use either fabric mode
Top Talker monitors or port mode Top Talker and end-to-end monitors. You cannot use fabric mode
Top Talker monitors and end-to-end monitors together on the same logical switch.
Admin Domain considerations: Top Talker monitors are always installed in AD255.
NPIV considerations: Top Talker takes NPIV devices into consideration when calculating the top
talking flows.

Adding a Top Talker monitor on an F_Port

1. Connect to the switch and log in as admin.
2. Enter the perfTTmon

Adding Top Talker monitors on all switches in the fabric (fabric mode)

When fabric mode is enabled, you can no longer install Top Talker monitors on an F_Port unless you
delete fabric mode.
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Port mode Top Talker
A Top Talker monitor can be installed on an F_Port to measure the traffic originating from the
F_Port and flowing to different destinations.
Fabric mode Top Talker
In fabric mode, Top Talker monitors are installed on E_Ports in the fabric and measure the data
rate of all the possible flows in the fabric (ingress E_Port traffic only). In fabric mode, Top Talker
monitors can determine the top n bandwidth users on a given switch.
add command.
--
perfttmon --add [egress | ingress] [slotnumber/]port
For example, to monitor the incoming traffic on port 7:
perfttmon --add ingress 7
To monitor the outgoing traffic on slot 2, port 4 on the Brocade 48000, Brocade DCX, or
DCX-4S:
perfttmon --add egress 2/4
Fabric OS Administrator's Guide
53-1001763-02