Brocade Network Advisor SAN User Manual v12.3.0 - Manual (Page 1152)

1100 Brocade Network Advisor SAN User Manual
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Bottleneck detection
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• Clicking OK opens the legacy Top Talkers dialog box. To use the legacy Top Talkers feature, you
must deactivate existing flows defined for the switch for Flow Vision.
To pause a Top Talker monitor on systems using Fabric OS before 7.2, complete the following steps.
1. Select the dialog box of the Top Talker monitor you want to pause.
Refer to steps 1-5 under “Configuring a fabric mode Top Talker monitor” on page 1096 or
“Configuring an F_Port mode Top Talker monitor” on page 1098 to display this dialog box.
2. Click Pause at the top of the dialog box.
Related topics
“Flow Vision”
“Configuring a fabric mode Top Talker monitor”
“Configuring an F_Port mode Top Talker monitor”
“Deleting a Top Talker monitor”
“Restarting a Top Talker monitor”
Restarting a Top Talker monitor
Procedures in this section pertain to restarting monitors created on systems using the legacy Top
Talkers feature and not those created with Flow Vision.
For systems using Fabric OS version 7.2 or later, when you select a device or device port, and then
select Monitor > Performance > Top Talkers, a message displays that you can use Flow Vision to
provide Top Talkers monitoring. You have these options:
• To use Flow Vision, delete existing monitors, then use the Add Flow Definition dialog box to
define an initiator and target port pair for monitoring. Refer to
Chapter 29, “Flow Vision” for
more information.
• Clicking OK opens the legacy Top Talkers dialog box. To use the legacy Top Talkers feature, you
must deactivate existing flows defined for the switch for Flow Vision.
To restart a top talker monitor, perform the following steps:
1. Select the dialog box of the Top Talker monitor you want to restart.
Refer to steps 1-5 under “Configuring a fabric mode Top Talker monitor” on page 1096 or
“Configuring an F_Port mode Top Talker monitor” on page 1098 to display this dialog box.
2. Click Continue.
Bottleneck detection
A bottleneck is a port in the fabric where frames cannot get through as fast as they should. In other
words, a bottleneck is a port where the offered load is greater than the achieved egress
throughput. Bottlenecks can cause undesirable degradation in throughput on various links. When a
bottleneck occurs at one place, other points in the fabric can experience bottlenecks as the traffic
backs up.