RFC 1369 (rfc1369) - Page 2 of 7
Implementation Notes and Experience for the Internet Ethernet MIB
Alternative Format: Original Text Document
RFC 1369 Ethernet MIB Implementations October 1992
This document reflects the currently known status of 11 different
implementations of the MIB by 7 different vendors on 7 different
Ethernet interface chips.
2. Observations
There are some interesting points to be noted from this information:
1) Only 4 variables are actually implemented in all
implementations: AlignmentErrors, FCSErrors,
ExcessiveCollisions and InternalMacTransmitErrors.
2) There were another five variables implemented in all but
one of the reported implementations,
SingleCollisionFrames, MultipleCollisionFrames,
LateCollisions, FrameTooLongs, and CarrierSenseErrors.
Three of these variables exist in implementations that
use the same chip as the implementation that does not
contain the variable. Specifically:
A) SingleCollisionFrames is not implemented in
implementation number 3, which uses the AMD LANCE.
However, other AMD LANCE implementations (7, 8, and 10)
do implement the variable, implying that it is
available on the LANCE.
B) MultipleCollisionFrames is not implemented in
implementation number 3, which uses the AMD LANCE.
However, other AMD LANCE implementations (7, 8, and 10)
do implement the variable, implying that it is
available on the LANCE.
C) LateCollisions is not implemented in implementation
number 1, which uses the Intel 82586. However, another
Intel 82586 based implementation (11) does implement
the variable, implying that it is available on the
Intel 82586.
D) CarrierSenseErrors is not implemented on implementation
number 2, which is based on the Fujitsu 86950 chip.
However, there is only one implementation based on this
chip and I have not been able to locate a data sheet on
this part so no conclusion can be drawn at this time.
E) FrameTooLongs is not implemented on implementation
number 5, which is based on the National NIC 8390 chip.
However, there is only one implementation based on this
Kastenholz