Dell PowerConnect Brocade 300 Fabric OS Administrator's Guide v7.1.0 - Page 380

13 Enabling bottleneck detection on a switch The following credit loss recovery methods are supported for Brocade 6520 back-end ports: • For all the credit loss methods described above, a link reset will automatically be performed, assuming that this option was enabled. See "Enabling back-end credit loss detection and recovery" below for details on enabling this feature. • A manual link reset option using the bottleneckmon command is also available. See "Enabling back-end credit loss detection and recovery" below for instructions. NOTE Whenever a link reset is performed on this switch, the RASlog C3-1014 message is displayed and recorded. Enabling back-end credit loss detection and recovery Credit loss detection and recovery is enabled and disabled through the CLI using the bottleneckmon --cfgcredittools command. Notes: • The execution of this command is subject to Virtual Fabric or Admin Domain restrictions that may be in place. Refer to the Fabric OS Troubleshooting and Diagnostics Guide for more information. • The bottleneck detection commands are supported on F_Ports, FL_Ports, E_Ports, and EX_Ports. • The credit recovery commands are supported only on back-end ports of 4G, 8G, and 16G Capable FC platforms for blades in the Brocade DCX, DCX-4S, DCX 8510-8, and DCX 8510-4 chassis. Enabling bottleneck detection on a switch Enabling bottleneck detection permits both latency and congestion detection. Bottleneck detection is enabled on a switch basis. It is recommended that you enable bottleneck detection on every switch in the fabric. If you later add additional switches, including logical switches, to the fabric, be sure to enable bottleneck detection on those switches as well. When you enable bottleneck detection on a switch, the settings are applied to all eligible ports on that switch. If ineligible ports later become eligible or, in the case of a logical switch, if ports are moved to the logical switch, bottleneck detection is automatically applied to those ports. You can later override these settings on a per-port basis, as described in "Changing bottleneck detection parameters" on page 384. Use the following procedure to enable bottleneck detection: 1. Connect to the switch and log in using an account with admin permissions. 2. Enter the bottleneckmon --enable command to enable bottleneck detection on all eligible ports on the switch. By default, alerts are not sent unless you specify the alert parameter; however, you can view a history of bottleneck conditions for the port as described in "Displaying bottleneck statistics" on page 391. 380 Fabric OS Administrator's Guide 53-1002745-02