Westermo RedFox Series - Manual (Page 196)

Westermo OS Management Guide
Version 4.17.0-0
9.1.7 Dropped Outbound Packets
The counter for a single type of dropped outbound packets is described here
(there is also a second kind, see excessive collisions in
section 9.1.8 ).
Filtered Outbound packets dropped outbound policy rules or because the port
was in LEARNING, LISTENING or BLOCKING state.
9.1.8 Outbound Collision and Busy Medium Counters
The collision and busy medium counters described here are only relevant for
half-duplex links.
Single Collisions The number of packets involved in a single collision, but then
sent successfully.
This would correspond to the Ether-like MIB dot3StatsSingleCollisionFrames
object.
Multiple Collisions The number of packets involved in more than one collision,
but finally sent successfully.
This would correspond to the Ether-like MIB dot3StatsMultipleCollisionFrames
object.
Excessive Collisions The number of packets failing (i.e., dropped) due to ex-
cessive collisions (16 consecutive collisions).
This would correspond to the Ether-like MIB dot3StatsExcessiveCollisions ob-
ject.
Late Collisions The number of collisions detected later than a 512-bits time into
the packet transmission.
This would correspond to the Ether-like MIB dot3StatsLateCollisions object.
Other Collisions Other collisions than single, multiple, excessive or late colli-
sions discovered on a port.
Total Collisions Computed as the sum of single, multiple, excessive, late and
other collisions.
Deferred (busy medium) The number of packets experiencing a busy medium
on its first transmission attempt, and which is later sent successfully, and
without experiencing any collision.
This would correspond to the Ether-like MIB dot3StatsDeferredTransmissions
object.
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