Fabric Watch Administrator's Guide v7.0.0 (53-1002153-01, April 2011)

70 Fabric Watch Administrator’s Guide

53-1002153-01

Port fencing

1. Use the fwSet --port -persistence command to set the port persistence time.

switch:admin> portthconfig --show [port_type]

2. Set the port persistence time.

switch:admin> fwSet --port -persistence seconds

Port fencing

Port fencing monitors ports for erratic behavior and disables a port if specified error conditions are

met. You can customize the thresholds and configure the ports to report errors for one or more

areas using the portThConfig command. After the ports are configured, you can enable port fencing

for specific areas of the physical ports, E_Ports, FOP_Ports, and FCU_Ports using the portFencing

command.

Table 20 shows the areas that support port fencing for the different physical port class and E_Port,

FOP_Port, and FCU subclasses. Port fencing is not supported for Loss of Sync (LOS) and Link

Failure (LF) areas.

NOTE

Port fencing configuration on the VE_Port is not supported on the Brocade DCX extension blade.

Active or online ports with errors that exceed the threshold are fenced after a six-second delay. In

cases where two types of errors occur within the six-second interval, the port is disabled and

indicates the reason code for the first error type that exceeded the threshold.

NOTE

The execution of the portFencing command is subject to Virtual Fabric or Admin Domain restrictions

that may be in place. Refer to the Fabric OS Command Reference Manual for details.

TABLE 20 Port fencing class and subclass areas

Port type Areas supported for port fencing

Physical ports Cyclic Redundancy Checks (CRC)

Invalid Transmission Words (ITW)

Link Reset (LR)

Protocol Error (PE)

State Change (ST)

Class 3 Discard Frames (C3TXO)

FOP_Ports Cyclic Redundancy Checks (CRC)

Invalid Transmission Words (ITW)

Link Reset (LR)

Protocol Error (PE)

State Change (ST)

Class 3 Discard Frames (C3TXO)

E_Ports Cyclic Redundancy Checks (CRC)

Invalid Transmission Words (ITW)

Link Reset (LR)

Protocol Error (PE)

State Change (ST)