Top Talker Monitors - HP StoreFabric SN6500B Administrator's Manual

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Top Talker monitors

Top Talker monitors
Top Talker monitors determine the flows (SID and DID pairs) that are the major users of bandwidth
(after initial stabilization). Top Talker monitors measure bandwidth usage data in real time and
relative to the port on which the monitor is installed.
NOTE
Initial stabilization is the time taken by a flow to reach the maximum bandwidth. This time varies
depending on the number of flows in the fabric and other factors. The incubation period can be up
to 14 seconds in the Backbones, and up to 82 seconds in the fixed-port switches.
Applications can use Top Talker monitors' data to do the following:
•
•
You can use Top Talker monitors to identify the SID and DID pairs that consume the most
bandwidth and can then configure them with certain Quality of Service (QoS) attributes so they get
proper priority. Refer to
The Top Talker monitor is based on SID and DID pairs and not WWNs. Once Top Talker monitors are
installed on a switch or port, it remains installed across power cycles.
Top Talker monitors supports two modes, port mode and fabric mode:
•
•
You can install Top Talker monitors in either port mode or fabric mode, but not both.
ATTENTION
A fabric mode Top Talker monitor and an EE monitor cannot be configured on the same fabric. You
must delete the EE monitor before you configure the fabric mode Top Talker monitor.
510
Re-route the traffic through different ports that are less busy, so as not to overload a given
port.
Alert you to the top-talking flows on a port if the total traffic on the port exceeds the acceptable
bandwidth consumption.
Chapter 21, "Optimizing Fabric Behavior,"
Port mode Top Talker monitor
A Top Talker monitor can be installed on a port to measure the traffic originating from the port
and flowing to different destinations.
You can configure Top Talker monitors on F_Ports and, depending on the switch model, on
E_Ports. The following platforms support Top Talker monitors on E_Ports:
-
Brocade 6505
-
Brocade 6510
-
Brocade 6520
-
Brocade DCX 8510 family
Fabric mode Top Talker monitor
In fabric mode, Top Talker monitors are installed on all 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.
for information on QoS.
Fabric OS Administrator's Guide
53-1002745-02