Chapter 5: Local Management
Page 5-76
2H22-08R SmartSwitch 2208 User’s Guide
Multicast Pkts (Read-only)
The Multicasts field displays the total number of good packets received
that were directed to a multicast address. The value of this field does not
include packets directed to the broadcast address.
CRC Align Errors (Read-only)
This field displays the number of packets with bad Cyclic Redundancy
Checks (CRC) received from the network. The CRC is a 4-byte field in
the data packet that ensures that the data received is the same as the data
that was originally sent. Alignment errors are due to packets not sent to
higher level protocols in the correct order.
Undersized Pkts (Read-only)
The Undersized Pkts field displays the number of packets received with a
valid CRC and whose size was less than the minimum Ethernet frame size
of 64 bytes (not including preamble).
Oversized Pkts (Read-only)
The Oversized Pkts field displays the number of packets received with a
valid CRC and whose size exceeded 1518 data bytes (not including
preamble).
Fragments (Read-only)
This field displays the number of received packets with less than the
minimum number of bytes, or received packets, were less than 64 bytes
(excluding framing bits), but including Frame Check Sequence (FCS)
bytes) that had a bad FCS, and an invalid CRC.
Jabbers (Read-only)
This field displays the total number of packets 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 packets (including bad packets,
broadcast packets, and multicast packets) 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.
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