HP Brocade 8/12c Fabric Watch Administrator's Guide v6.4.0 (53-1001770-01, Jun - Page 95

Recommended high port fencing thresholds, Port fencing configuration using the portFencing command

Page 95 highlights

Port fencing 7 Recommended high port fencing thresholds It is recommend you use conservative thresholds to prevent false triggers. Examples for the Invalid Transmitted Words and Invalid CRCs are shown in Table 19. TABLE 19 Area High port fencing threshold recommendations High threshold (per minute) E_Ports High threshold (per minute) Storage FOP_Ports High threshold (per minute) Host FOP_Ports Default Invalid transmitted words (ITW) 40 80 1000 1000 Invalid cyclic redundancy check 20 40 1000 1000 error (CRC) Recommended low port fencing thresholds Set in-between thresholds to much lower values with an alerting action (RASlog, SNMP trap, or e-mail). Examples for the Invalid Transmitted Words and Invalid CRCs are shown in Table 20. These alerts will trigger when the count exceeds the low threshold. TABLE 20 Area Low port fencing threshold recommendations Low threshold (per minute) E_Ports Low threshold (per minute) Storage FOP_Ports Low threshold (per minute) Host FOP_Ports Default Invalid transmitted words (ITW) 25 25 25 1000 Invalid cyclic redundancy check 5 5 5 1000 error (CRC) Port fencing configuration using the portFencing command The portFencing command enables and configures the port fencing feature; it does not set the thresholds for port fencing. You must configure port thresholds with the portThconfig command before you can enable 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. You can configure a specified port type or a list of port types to enable port fencing for one or more areas. Use the all option to indicate all port types or all areas. NOTE Port fencing configuration on the VE_Port is supported on the FR4-18i router blade and the Brocade 7500 extension switch only. It is not supported on the Brocade 7800 extension switch or the DCX extension blade. Fabric Watch Administrator's Guide 75 53-1001770-01

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Fabric Watch Administrator’s Guide
75
53-1001770-01
Port fencing
7
Recommended high port fencing thresholds
It is recommend you use conservative thresholds to prevent false triggers. Examples for the Invalid
Transmitted Words and Invalid CRCs are shown in
Table 19
.
Recommended low port fencing thresholds
Set in-between thresholds to much lower values with an alerting action (RASlog, SNMP trap, or
e-mail). Examples for the Invalid Transmitted Words and Invalid CRCs are shown in
Table 20
. These
alerts will trigger when the count exceeds the low threshold.
Port fencing configuration using the portFencing command
The
portFencing
command enables and configures the port fencing feature; it does not set the
thresholds for port fencing. You must configure port thresholds with the
portThconfig
command
before you can enable 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.
You can configure a specified port type or a list of port types to enable port fencing for one or more
areas. Use the
all
option to indicate all port types or all areas.
NOTE
Port fencing configuration on the VE_Port is supported on the FR4-18i router blade and the Brocade
7500 extension switch only. It is not supported on the Brocade 7800 extension switch or the DCX
extension blade.
TABLE 19
High port fencing threshold recommendations
Area
High threshold
(per minute)
E_Ports
High threshold
(per minute)
Storage
FOP_Ports
High threshold
(per minute)
Host
FOP_Ports
Default
Invalid transmitted words (ITW)
40
80
1000
1000
Invalid cyclic redundancy check
error (CRC)
20
40
1000
1000
TABLE 20
Low port fencing threshold recommendations
Area
Low threshold
(per minute)
E_Ports
Low threshold
(per minute)
Storage
FOP_Ports
Low threshold
(per minute)
Host
FOP_Ports
Default
Invalid transmitted words (ITW)
25
25
25
1000
Invalid cyclic redundancy check
error (CRC)
5
5
5
1000