Dell PowerConnect Brocade M6505 Brocade 7.1.0 Fabric Watch Administrator's Gui - Page 91

Port fencing configuration using BNA, Enabling port fencing

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Port fencing 7 TABLE 21 Area Recommended port fencing thresholds Moderate/recommended threshold Cyclic redundancy check (CRC) Invalid transmission word (ITW) Link reset (LR) State change (ST) Class 3 frame discard due to timeout (C3TX_TO) Low 5 High 20 Low 25 High 40 Low 0 High 5 Low 0 High 7 Low 0 High 5 Aggressive threshold Low 0 High 2 Low 0 High 25 Defaults Defaults N/A Conservative threshold Low 5 High 40 Low 25 High 80 Defaults Defaults N/A Enabling port fencing 1. Connect to the switch and log in as admin. 2. Configure port thresholds. Information about how to configure port thresholds is detailed in Chapter 7, "Port Monitoring". 3. Enter the portFencing --enable command. For example, to configure 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 --disable option to disable port fencing for the specified areas on all ports of the specified port types. Use the --show option to display the configuration. The display 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. For example, to disable 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. Fabric Watch Administrator's Guide 71 53-1002752-01

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Fabric Watch Administrator’s Guide
71
53-1002752-01
Port fencing
7
Enabling port fencing
1.
Connect to the switch and log in as admin.
2.
Configure port thresholds. Information about how to configure port thresholds is detailed in
Chapter 7, “Port Monitoring”
.
3.
Enter the
portFencing
--
enable
command. For example, to configure 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 --
disable
option to disable port fencing for the specified areas on all ports of the specified
port types. Use the --
show
option to display the configuration. The display 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. For example, to disable 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.
TABLE 21
Recommended port fencing thresholds
Area
Moderate/recommended
threshold
Aggressive threshold
Conservative threshold
Cyclic redundancy check
(CRC)
Low 5
High 20
Low 0
High 2
Low 5
High 40
Invalid transmission word
(ITW)
Low 25
High 40
Low 0
High 25
Low 25
High 80
Link reset (LR)
Low 0
High 5
Defaults
Defaults
State change (ST)
Low 0
High 7
Defaults
Defaults
Class 3 frame discard due
to timeout (C3TX_TO)
Low 0
High 5
N/A
N/A