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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
- Fabric Watch 1
- Document History 3
- Contents 5
- Chapter 7 Port Monitoring 7
- Chapter 8 System Monitoring 8
- 53-1002752-01 10
- About This Document 15
- What’s new in this document 16
- Document conventions 17
- Notes, cautions, and warnings 18
- Key terms 18
- Additional information 19
- Getting technical help 19
- Document feedback 20
- Fabric Watch overview 22
- Role-based access control 22
- Fabric Watch licensing 22
- Event behavior configuration 23
- Alert configuration 23
- Time base configuration 24
- Monitoring 24
- Post-processing of messages 24
- Switch monitoring components 25
- Security monitoring 26
- SFP monitoring 26
- Port monitoring 26
- System resource monitoring 27
- Logical switch support 28
- Fabric Watch event settings 29
- SNMP traps 30
- RASlog (switch event) 30
- Fabric Watch audit messages 31
- Data values 31
- • Fabric 32
- • Security 32
- • E_Port (Port subclass) 32
- • VE_Port (Port subclass) 32
- Fabric Watch Thresholds 33
- Threshold triggers 34
- Above event trigger 35
- Below event trigger 35
- Audit and RASlog messages 35
- Time bases 36
- Fabric Watch alarm behavior 37
- Elements 40
- Class Description 41
- Fabric Watch Activation 43
- FIGURE 6 Example OID tree 47
- Fabric Watch Configuration 49
- Disabling an e-mail alert 52
- Enabling an e-mail alert 52
- Sending a test e-mail message 53
- Notification configuration 54
- FW: Alarms are enabled 55
- Area Description 58
- Fabric class default settings 59
- Security class areas 60
- Threshold state 61
- SFP class areas 63
- • Send an SNMP alarm 66
- • Log a RASlog message 66
- • Send an e-mail alert 66
- Configuration recommendation 67
- 16 Gbps and QSFP monitoring 68
- Monitoring the SFP and QSFP 69
- Security classes 72
- Port Monitoring 75
- Port class default settings 77
- Port configuration 78
- Using the nosave command 79
- Port type: physical port 79
- <[slot/]port> 81
- E_Port class default settings 82
- • Area: Loss of Signal Count 84
- Port fencing 89
- Port fencing configuration 90
- Enabling port fencing 91
- Disabling port fencing 91
- Port fencing requirements 92
- System Monitoring 95
- 76 53-1002752-01 96
- Resource class settings 97
- Environment class settings 99
- CPU and memory 100
- Switch monitoring 101
- Switch status policy planning 102
- Monitor Health factors 103
- FRU monitoring 104
- Recommended FRU settings 106
- In this chapter 107
- • Polling Interval 108
- • Usage Limit 108
- • No. of Retries 108
- Configuring threshold traits 109
- Configuring threshold alarms 110
- Displaying alarms 113
- Enabling the e-mail alert 114
- Disabling the e-mail alert 115
- Fabric Watch Reports 117
- Switch Health report 119
- Switch Status Policy report 120
- Port Detail report 121
- Report item Description 122
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