D-Link 1824i User Guide - Page 65

DRM Data Rate Mismatch, Auto Partition

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10BASE-T Stackable Hubs are too long, and you have either exceeded the repeater count or cable length specified in the Ethernet standard. ♦ Runt Frame: counts frames shorter than the 64-byte (octet) minimum defined by the Ethernet standard. These are usually caused by collisions. ♦ Collision: counts collisions on the Ethernet segment. ♦ FCS Error: counts otherwise valid frames that fail the CRC check. ♦ Alignment Error: counts otherwise valid frames that did not end on a byte (octet) boundary ♦ Interframe Gap: counts frames sent too close behind the previous frame; a minimum of 8±1 microseconds of carrier is required between frames. ♦ Jabber: counts frames longer than the maximum 1518 bytes (octets) with either bad framing or an invalid CRC. ♦ Auto Partition: counts events where the port was partitioned off from the rest of the network due to excessive errors. ♦ Fragment: counts packets less than 64 bytes with either bad framing or an invalid CRC. These are normally the result of collisions. ♦ DRM (Data Rate Mismatch): counts events where there is a frequency mismatch between the received signal and the hub's internal clock. This may indicate a hardware problem in the hub or in an Ethernet interface. ♦ SFD Missing: counts frames longer than 10 bytes without a valid Start of Frame Delimiter. ♦ Readable Frame: counts valid frames. ♦ Multicast Frame: counts valid frames that are sent to multicast Ethernet addresses. Using the Console Interface 6-23

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10BASE-T Stackable Hubs
are too long, and you have either exceeded the repeater count or cable
length specified in the Ethernet standard.
♦
Runt Frame:
counts frames shorter than the 64-byte (octet) minimum
defined by the Ethernet standard.
These are usually caused by
collisions.
♦
Collision:
counts collisions on the Ethernet segment.
♦
FCS Error:
counts otherwise valid frames that fail the CRC check.
♦
Alignment Error:
counts otherwise valid frames that did not end on a
byte (octet) boundary
♦
Interframe Gap:
counts frames sent too close behind the previous
frame; a minimum of 8
±
1 microseconds of carrier is required between
frames.
♦
Jabber:
counts frames longer than the maximum 1518 bytes (octets)
with either bad framing or an invalid CRC.
♦
Auto Partition:
counts events where the port was partitioned off from
the rest of the network due to excessive errors.
♦
Fragment:
counts packets less than 64 bytes with either bad framing
or an invalid CRC.
These are normally the result of collisions.
♦
DRM (Data Rate Mismatch):
counts events where there is a
frequency mismatch between the received signal and the hub’s
internal clock. This may indicate a hardware problem in the hub or in
an Ethernet interface.
♦
SFD Missing:
counts frames longer than 10 bytes without a valid
Start of Frame Delimiter.
♦
Readable Frame:
counts valid frames.
♦
Multicast Frame:
counts valid frames that are sent to multicast
Ethernet addresses.
Using the Console Interface
6-23