Deployment Guide

The following example configures port fencing on an FOP_Port for the Class 3
discard frame area.
portFencing --enable fop-port --area C3TX_TO
Disabling port fencing
Use the portFencing --disable command to disable port fencing for the specified areas on all ports of
the specified port types. You can use the portFencing --show command to display the configuration.
The output of this command includes the configured port types, error types, and port fencing status
(disabled or enabled). Port fencing is disabled by default.
1. Connect to the switch and log in as admin.
2. Enter the portFencing --disable command.
The following example disables port fencing on an FOP_Port for the Link Reset
area.
portFencing --disable fop_port --area LR
Port fencing configuration using BNA
The Brocade Network Advisor (BNA) management application supports port fencing. Port fencing
objects include the SAN, Fabrics, Directors, Switches (physical), Virtual Switches, Ports, as well as
Port Types (E_Port, F_Port, and FX_Port). Use port fencing to directly assign a threshold to these
objects. When a switch does not support port fencing, a "No Fencing Changes" message displays in
the Threshold field in the Ports table.
If the port detects more events during the specified time period, the device firmware blocks the port,
disabling transmit and receive traffic until you investigate, solve the problem, and manually unblock the
port. Physical fabrics, directors, switches, port types, and ports display when you have the privileges to
manage that object and are indicated by the standard product icons.
Port fencing requirements
To configure port fencing using the BNA management application, all Fabric OS devices must have
Fabric Watch and must be running firmware Fabric OS 6.2 or later.
Port fencing threshold areas supported on BNA
You can add, edit, view, or remove thresholds on the following area types using Brocade Network
Advisor (BNA). You can then assign the thresholds to available objects in the BNA tree.
Port fencing threshold areas include the following:
• C3 Discard Frames (Fabric OS only)
• Invalid CRCs (Fabric OS only)
• Invalid Transmission Words (Fabric OS only)
• Link Reset (Fabric OS only)
• Protocol Errors (M-EOS and Fabric OS)
• Security (M-EOS)
• State Changes (Fabric OS only)
Disabling port fencing
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