Dell Brocade 6520 Command Reference Supporting Fabric OS v7.1.0 - Page 712

2 portCfgISLMode portCfgISLMode Enables or disables ISL R_RDY mode on a port. SYNOPSIS portcfgislmode [slot/]port,mode DESCRIPTION NOTES OPERANDS EXAMPLES Use this command to enable or disable interswitch link read-ready (ISL R_RDY) mode on a port. Use the portCfgShow command to determine whether ISL R_RDY mode is enabled on a port. In ISL R_RDY mode, the port sends a primitive signal that the port is ready to receive frames. The port sends an exchange link parameter (ELP) with flow control mode 02. If a port is ISL R_RDY enabled, it can only receive an ELP with flow control mode 02. A received ELP with flow control mode 01 will segment the fabric. This mode cannot detect any inconsistencies in fabric operating mode parameters, such as the PID format of connected ports. Before enabling ISL R_RDY mode, ensure that all fabric-wide parameters are consistent for every switch in the fabric. Use configShow fabric.ops to view a complete listing of fabric operating mode parameters on the switch. The following E_Port configurations are not applicable to a port configured for ISL R_RDY mode. If configured, these port configuration parameters are ignored during E_Port initialization: • Trunk port • VC link init The portCfgISLMode and portCfgLongDistance levels LE, LD, or LS only can be enabled at the same time. Such an ISL uses R_RDY mode of flow control over the long distance link. This feature is not backward compatible with firmware versions that do not support it. Changes made by portCfgISLMode are persistent across switch reboots and power cycles. This configuration can be cleared but not set on VE/VEX_Ports. The execution of this command is subject to Virtual Fabric or Admin Domain restrictions that may be in place. Refer to Chapter 1, "Using Fabric OS Commands" and Appendix A, "Command Availability" for details. The Fabric OS port configuration commands are not supported on FCoE ports. This command has the following operands: slot For bladed systems only, specify the slot number of the port to display, followed by a slash (/). port Specify the port to display, relative to its slot for bladed systems. Use switchShow to list valid ports. mode Specify 1 to enable ISL R_RDY mode. Specify 0 to disable ISL R_RDY mode. To enable ISL R_RDY mode on a port: switch:admin> portcfgislmode 1/3, 1 ISL R_RDY Mode is enabled for port 3. Please make sure the PID formats are consistent across the entire fabric. 684 Fabric OS Command Reference 53-1002746-01