Brocade Network Advisor SAN User Manual v11.1x (53-1002167-01, May 2011)

Brocade Network Advisor SAN User Manual 805
53-1002167-01
Bottleneck detection
27
Displaying bottleneck statistics
You can display a graph of bottleneck statistics for up to 32 ports at one time.
You can display a graph showing the history of bottleneck conditions, for up to the last 150
minutes.
1. Select Monitor > Performance > Bottleneck Graph.
The Bottleneck Graph Port Selector dialog box displays with bottlenecked ports shown in the
Available list.
2. (Optional) Select All Ports from the Show list to display all ports in the Available list.
3. Select one or more ports for which you want to display bottleneck statistics and click the right
arrow to move them to the Selected list.
You can select up to 32 ports.
4. Click OK.
The Bottleneck Graph dialog box displays, showing bottleneck statistics for the selected ports.
This dialog box has several options for displaying the data:
• Change the display interval and the display range.
The display range cannot exceed the 30 times the display interval. Note that the display
interval is in seconds and the display range is in minutes. So if the display interval is 10
(seconds), the display range cannot be greater than (5 minutes). (10 seconds X 30 = 300
seconds = 5 minutes)
• Click Refresh to update the displayed data with fresh data.
If you change the display interval or display range, you must click Refresh for the changes
to take effect.
• Display realtime and historical performance graphs.
• Select a bottlenecked F_ or FL_Port and click Show Affected Hosts to see the hosts that
might be affected by the bottleneck.
Displaying hosts that could be affected by an F_ or FL_Port bottleneck
The following procedure displays hosts that could be affected because of a bottlenecked F_ or
FL_Port. These hosts are determined based on zoning information and are not based on actual
traffic flow.
Affected hosts cannot be determined for bottlenecked E_Ports.
1. Select Monitor > Performance > Bottlenecks.
The Bottlenecks dialog box displays.
2. In the Current Settings list, select a bottlenecked port (a port with “Bottlenecked” in the
Bottleneck Status column).
3. Click Show Affected Hosts.
The Bottleneck Affected Hosts dialog box displays.
4. Select a port in the Bottleneck Ports list to display the affected hosts in Hosts Affected by
Bottlenecks list.