| Purpose |
This probe determines if fabric interfaces are flapping. A given interface
(considering only fabric interfaces) is considered to be flapping if it
transitions state more than "Threshold" times over the last "Duration". Such
flapping will cause an anomaly to be raised. If more-than "Max Flapping
Interfaces Percentage" percent of interfaces on a given device are flapping,
an anomaly will be raised for that device. Finally, the last "Anomaly
History Count" anomaly state-changes are stored for observation.
|
| Source Processor |
| leaf fab int status (Service Data Collector) |
Purpose: wires in interface status telemetry for all fabric
interfaces on the leaf devices.
| Output Stage: leaf_if_status |
Set of operational states ("up" or "down"). Each set
member corresponds to a leaf fabric interface and
has the following keys to identify it: system_id (id
of the leaf system, usually serial number),
interface (name of the interface).
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|
| Additional Processor(s) |
| leaf fabric interface status history (Accumulate) |
Purpose: create recent history time series for each interface
status In terms of the number of samples, the time series will
hold the smaller of: 1024 samples or samples collected during
the last 'total_duration' seconds (facade parameter).
Input Stage: leaf_if_status
| Output Stage: leaf_fab_int_status_accumulate |
Set of interface status time series (for each spine
facing interface on each leaf). Each set member has
the following keys to identify it: system_id (id of
the leaf system, usually serial number), interface
(name of the interface).
|
|
| leaf fabric interface flapping (Range) |
Purpose: Count the number of state changes in the
leaf_fab_int_status_accumulate ("up" to "down" and "down" to
"up"). If the count is higher than 'threshold' facade parameter
return "true", otherwise "false".
Input Stage: leaf_fab_int_status_accumulate
| Output Stage: if_status_flapping |
Set of statuses (for each spine facing interface on
each leaf), indicating if the interface has been
flapping or not. Each set member has the following
keys to identify it: system_id (id of the leaf
system, usually serial number), interface (name of
the interface).
|
|
| percentage flapping per device interfaces (MatchPercentage) |
Input Stage: if_status_flapping
Output Stage: flapping_fab_int_perc
|
| system anomalous flapping (Range) |
Input Stage: flapping_fab_int_perc
| Output Stage: system_flapping |
Set of statuses for each leaf, indicting if the leaf
has higher then acceptable percentage of flapping
interfaces. Each set member has the following key to
identify it: system_id (id of the leaf system,
usually serial number).
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For more information about this probe, from the blueprint, navigate to
Analytics > Probes, click Create
Probe, then select Instantiate Predefined Probe
from the drop-down list. Select the probe from the Predefined
Probe drop-down list to see details specific to the probe.
