Warning Threshold - Cisco MDS 9000 Series Configuration Manual

Configuring Interfaces
• err-pkt-to-xbar_ ASIC Error Pkt to xbar—This counter provides information about the number of error
• err-pkt-from-xbar_ ASIC Error Pkt from xbar—This counter provides information about the number of
Table 10: Slowdrain Port-Monitor Policy Threshold Value, on page 33
slow-drain port-monitor policy:
Table 10: Slowdrain Port-Monitor Policy Threshold Value
Counter
Credit Loss Reco
TX Credit Not
Available
Note
If no other port monitor policy is explicitly activated, the slowdrain policy is activated. The default policy
shows only the default counter monitor values.

Warning Threshold

Port Monitor warning thresholds can be used to generate syslog messages before rising and falling thresholds
are reached. A single threshold is configurable per Port Monitor counter. A syslog is generated whenever the
counter crosses the configured warning threshold in either the rising or falling direction. This allows the user
to track counters that are not severe enough to hit the rising threshold, but where nonzero events are of interest.
The warning threshold must be equal or less than the rising threshold and equal or greater than the falling
threshold.
The warning threshold is optional; warning syslogs are only generated when it is specified in a counter
configuration.
Use Case Warning Threshold
Let us consider two scenarios with the following configurations:
• Rising threshold is 30
• Warning threshold is 10
• Falling threshold is 0
This example displays the syslog generated when the error count is less than the rising threshold value, but
has reached the warning threshold value:
Syslog Generated When the Error Count is Less Than the Rising Threshold Value
%PMON-SLOT2-4-WARNING_THRESHOLD_REACHED_UPWARD: Invalid Words has reached warning threshold
in the upward direction (port fc2/18 [0x1091000], value = 10).
packets that were sent from the crossbar on a module to the crossbar on a supervisor.
error packets that were sent to the crossbar on a module from the crossbar on a supervisor.
Threshold
Type
Delta
Delta
Interval Rising Event
(Seconds) Threshold
1 1 4
1 10 4
Cisco MDS 9000 Series Interfaces Configuration Guide, Release 8.x
Warning Threshold
displays the threshold value of the
Falling Event Port Monitor
Threshold Portguard
0 4 Not enabled
0 4 Not enabled
33