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28 Chapter 1 Network monitoring
Field Description
512-1023 bytes Received column: Indicates the total number of 512-byte to
1023-byte packets received on this port.
Transmitted column: Indicates the total number of 512-byte to
1023-byte packets transmitted successfully on this port.
1024-1518 bytes Received column: Indicates the total number of 1024-byte to
1518-byte packets received on this port.
Transmitted column: Indicates the total number of 1024-byte to
1518-byte packets transmitted successfully on this port.
Frame Errors Indicates the total number of valid-size packets received but
discarded because of CRC errors and improper framing.
Undersized Packets Indicates the total number of packets received on this port with
fewer than 64 bytes and with proper CRC and framing (also known
as short frames or runts).
Oversized Packets Indicates the total number of packets received on this port with more
than 1518 bytes and with proper CRC and framing (also known as
oversized frames).
Filtered Packets Indicates the number of packets filtered (not forwarded) by this port.
Flooded Packets Indicates the total number of packets flooded (forwarded) through
this port because the destination address was not in the address
database.
FCS Errors Indicates the total number of valid-size packets received with proper
framing but discarded because of cyclic redundancy check (CRC)
errors.
Collisions Indicates the total number of collisions detected on this port.
Single Collisions Indicates the total number of packets transmitted successfully on
this port after a single collision.
Multiple Collisions Indicates the total number of packets transmitted successfully on
this port after more than one collision.
Excessive Collisions Indicates the total number of packets lost on this port due to
excessive collisions.
Deferred Packets Indicates the total number of frames delayed on the first transmission
attempt, but that never incurred a collision.
Late Collisions Indicates the total number of packet collisions that occurred
after a total length of time that exceeded 512 bit-times of packet
transmission.
Nortel Ethernet Switch 460/470
Configuration — System Monitoring
NN47210-503 01.01 Standard
3.7 22 February 2007
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