Port Monitor - Cisco MDS 9000 Series Configuration Manual

Configuring Interfaces
• tx-discards

Port Monitor

The Port Monitor feature can be used to monitor the performance and status of ports and generate alerts when
problems occur. You can configure thresholds for various counters and enable event triggers when the values
cross the threshold.
For rising and falling thresholds, a syslog is generated only when the error count crosses these threshold
values.
Table 8: Default Port Monitor Policy with Threshold Values, on page 29
policy with threshold values. The unit for threshold values (rising and falling) differs across different counters.
Note
The link connecting a core switch to a Cisco NPV switch should be treated as an Inter-Switch Link (ISL)
(core port) in the port monitor. Previously, core ports were included as access ports and were subject to any
portguard actions configured. This allows portguard actions on true access (edge) ports, while ports connecting
to Cisco NPV switches remain unaffected. Use the interface level switchport logical-type command to change
the logical type for the links between an NPIV switch and a Cisco NPV switch.
Note NP ports are not monitored in port monitor.
Table 8: Default Port Monitor Policy with Threshold Values
Counter
link-loss
sync-loss
signal-loss
state-change
invalid-words
invalid-crc
tx-discards
Threshold Interval Rising
Type (Seconds) Threshold
Delta 60 5
Delta 60 5
Delta 60 5
Delta 60 5
Delta 60 5
Delta 60 5
Delta 60 200
Cisco MDS 9000 Series Interfaces Configuration Guide, Release 8.x
displays the default port monitor
Event Falling Event
Threshold
4 1 4
4 1 4
4 1 4
4 0 4
4 0 4
4 1 4
4 10 4
Port Monitor
Warning Port
Threshold Monitor
Portguard
Not Not
enabled enabled
Not Not
enabled enabled
Not Not
enabled enabled
Not Not
enabled enabled
Not Not
enabled enabled
Not Not
enabled enabled
Not Not
enabled enabled
29