Portcfgislmode - Brocade Communications Systems 1606 Command Reference Manual

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portCfgISLMode

portCfgISLMode
Enables or disables ISL R_RDY mode on a port.
Synopsis portcfgislmode [slot/]port,mode
Description 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:
•
•
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.
Notes The long distance modes L0.5, L1, and L2 are no longer supported in v5.3.0 or later.
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. Use fcoe --cfg to
configure FCoE ports.
Operands This command has the following operands:
slot
port
mode
Examples To enable ISL R_RDY mode on a port:
610
Trunk port
VC link init
For bladed systems only, specify the slot number of the port to display,
followed by a slash (/).
Specify the port to display, relative to its slot for bladed systems. Use
switchShow to list valid ports.
Specify 1 to enable ISL R_RDY mode. Specify 0 to disable ISL R_RDY mode.
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.
Fabric OS Command Reference
53-1001337-01