Cisco ONS 15327, User Documentation

Page: 324 / 559

9-32
Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 9 Ethernet Operation
Remote Monitoring Specification Alarm Thresholds
during that time interval. For example, if a threshold is set at 1000 collisions and 1001 collisions occur
during the 15-minute interval, an event triggers. CTC allows you to provision these thresholds for
Ethernet statistics.
Note
You can find performance monitoring specifications for all other cards in Chapter 8, “Performance
Monitoring.”
Note Table 9-9 defines the variables you can provision in CTC. For example, to set the collision threshold,
choose etherStatsCollisions from the Variable menu.
Table 9-9 Ethernet Threshold Variables (MIBs)
Variable Definition
iflnOctets Total number of octets received on the interface, including
framing octets
iflnUcastPkts Total number of unicast packets delivered to an appropriate
protocol
iflnErrors Number of inbound packets discarded because they contain
errors
ifOutOctets Total number of transmitted octets, including framing packets
ifOutUcastPkts Total number of unicast packets requested to transmit to a single
address
dot3statsAlignmentErrors Number of frames with an alignment error, i.e., the length is not
an integral number of octets and the frame cannot pass the FCS
test
dot3StatsFCSErrors Number of frames with framecheck errors, i.e., there is an
integral number of octets, but an incorrect FCS
dot3StatsSingleCollisionFrames Number of successfully transmitted frames that had exactly one
collision
dot3StatsMutlipleCollisionFrame Number of successfully transmitted frames that had multiple
collisions
dot3StatsDeferredTransmissions Number of times that the first transmission was delayed because
the medium was busy
dot3StatsLateCollision Number of times that a collision was detected later than 64 octets
into the transmission (also added into collision count)
dot3StatsExcessiveCollision Number of frames where transmissions failed because of
excessive collisions
etherStatsJabbers Total number of octets of data (including bad packets) received
on the network
etherStatsUndersizePkts Number of packets received with a length less than 64 octets
etherStatsFragments Total number of packets that are not an integral number of octets
or have a bad FCS, and that are less than 64 octets long
etherStatsPkts64Octets Total number of packets received (including error packets) that
were 64 octets in length