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RMON Statistics Screen
6E122-26, 6E132-25, 6E123-26 and 6E133-25 User’s Guide 5-101
Multicasts (Read-only)
The Multicasts field displays the total number of good frames received
that were directed to a multicast address. The value of this field does not
include frames directed to the broadcast address.
CRC Align Errors (Read-only)
This field displays the number of frames with bad Cyclic Redundancy
Checks (CRC) received from the network. The CRC is a 4-byte field in
the data frames that ensures that the data received is the same as the data
that was originally sent.
Undersized Pkts (Read-only)
The Undersized Pkts field displays the number of frames received whose
size was less than the minimum Ethernet frame size of 64 bytes, not
including preamble, but have a valid CRC.
Oversized Pkts (Read-only)
The Oversized Pkts field displays the number of frames received whose
size exceeded 1518 data bytes, not including preamble, but have a valid
CRC.
Fragments (Read-only)
This field displays the number of received frames that are not the
minimum number of bytes in length or received frames that had a bad
Frame Check Sequence (FCS), were less than 64 bytes in length
(excluding framing bits, but including FCS bytes), and have an invalid
CRC.
Jabbers (Read-only)
This field displays the total number of frames that were greater than 1518
bytes and had either a bad FCS or a bad CRC.
Total Packets (Read-only)
This field displays the total number of frames (including bad frames,
broadcast frames, and multicast frames) received on this interface.
NOTE
It is normal for the Fragments field to increment. This is
because the RMON agent increments the field when runts are
detected (which are normal occurrences due to collisions) and
when noise hits occur.