Brocade Communications Systems Fabric Watch, Administrator'S Manual

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Fabric Watch Administrator’s Guide 69
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Port fencing
7
Setting the port persistence time
Port persistence is used to transition a port into a marginal status. Fabric Watch does not record
the event until the event persists for a length of time equal to the port persistence time. If the port
returns to normal boundaries before the port persistence time elapses, Fabric Watch does not
record the event.
The port persistent time is measured in seconds and can be configured. Configuring the port
persistence time to zero disables this feature. The default value for port persistence is 18 seconds.
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. Port fencing is not supported on VE_Ports.
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.
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
EX_Ports Cyclic Redundancy Checks (CRC)
Invalid Transmission Words (ITW)
Link Reset (LR)
Protocol Error (PE)
State Change (ST)