CHAPTER 3
ETHERNET MIB
The ELS10-26 supports the Ethernet MIB as defined in Definitions of
Managed Objects for the Ethernet-like Interface Types, RFC 1284
(J. Cook, editor), dated December 1991.
The MIB tree prefix for reaching the GenericIF group is:
1.3.6.1.2.1.12.
3.1 GENERIC ETHERNET-LIKE GROUP
dot3Table
Not Accessible
{dot3 1}
A list of interface entries; one per Ethernet port. The entry instances correspond to the ELS10-26’s port numbers.
dot3Entry
Not Accessible
{dot3Table 1}
A set of operational attributes for an Ethernet entry. The individual components are described below. dot3Index
Integer Read-Only
The ELS10-26’s Ethernet port number.
{dot3Entry 1} dot3InitializeMAC
Integer Read-Write
{dot3Entry 2}
Whether the port has been initialized. Initializing a port automatically resets all of the port’s statistics, and enables transmit and receive (the receiver will be in promiscuous mode). The value of dot3InitializeMAC is not saved in the event that the ELS10-26 reboots. Values include:
• initialized (1)
• uninitialized (2)
3-1
Ethernet MIB dot3MACSubLayerStatus
Integer Read-Write
{dot3Entry 3}
Treated identically to dot3InitializeMAC. Values include:
• enabled (1)
• disabled (2) dot3MulticastReceiveStatus
Integer Read-Write
{dot3Entry 4}
Whether the port is able to receive multicasts. This is always enabled when the port is enabled, and always disabled when the port is disabled. Values include:
• enabled (1)
• disabled (2) dot3TxEnabled
Integer Read-Write
{dot3Entry 5}
Whether the port is able to transmit. This is always enabled when the port is enabled, and always disabled when the port is disabled.
Values include:
• true (1)
• false (2) dot3TestTdrValue
Gauge Read-Only
{dot3Entry 6}
Always zero, since the results of TDR tests are not available.
3.2 ETHERNET-LIKE STATISTICS GROUP
The dot3StatsTable is specified in a unique manner. That is, the
RFC specifies that value of 0 should be returned for counters that are not implemented.
3-2
Ethernet MIB dot3StatsTable
Not Accessible
{dot3 2}
A list of interface entries; one per Ethernet port, which correspond to the dot3Table entries. dot3StatsEntry
Not Accessible
{dot3StatsTable 1}
A set of statistics for an Ethernet entry. The individual components are described below. dot3StatsIndex
Integer Read-Only
The ELS10-26’s Ethernet port number.
{dot3StatsEntry 1} dot3StatsAlignmentErrors
Counter Read-Only
{dot3StatsEntry 2}
Number of received packets with frame alignment errors since the port was last enabled. dot3StatsFCSErrors
Counter Read-Only
{dot3StatsEntry 3}
Number of received packets with FCS errors (and without frame alignment errors) since the port was last enabled. dot3StatsSingleCollisionFrames
Counter Read-Only
{dot3StatsEntry 4}
The number of frames that experienced a single collision. dot3StatsMultipleCollisionFrames
Counter Read-Only
{dot3StatsEntry 5}
The number of successfully transmitted frames that experienced more than one collision.
3-3
Ethernet MIB dot3StatsSQETestErrors
Counter Read-Only
{dot3StatsEntry 6}
The number of times an SQE failure (i.e., heartbeat lost) occurred, since the port was last enabled. dot3StatsDeferredTransmissions
Counter Read-Only
{dot3StatsEntry 7}
The number of frames for which the first transmission attempt was successful, but delayed because the medium was busy.
dot3StatsLateCollisions
Counter Read-Only
{dot3StatsEntry 8}
The number of times that a late collision was detected while the
ELS10-26 was transmitting a frame.
dot3StatsExcessiveCollisions
Counter Read-Only
{dot3StatsEntry 9}
The number of times a frame transmission attempt experienced excessive collisions, since the port was last enabled. dot3StatsInternalMACTransmitErrors {dot3StatsEntry 10}
Counter Read-Only
The number of times a frame transmission attempt experienced an error other than dot3StatsSQETestErrors, dot3StatsExcessiveCollisions, or dot3StatsCarrierSenseErrors, since the port was last enabled. dot3StatsCarrierSenseErrors
Counter Read-Only
{dot3StatsEntry 11}
The number of times that a carrier sense condition was lost during a transmission attempt, since the port was last enabled.
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Ethernet MIB dot3StatsExcessiveDeferrals
Counter Read-Only
{dot3StatsEntry 12}
The number of times that transmission was deferred for an excessive period of time.
dot3StatsFrameTooLongs
Counter Read-Only
{dot3StatsEntry 13}
The number of times a received packet was too long, since the port was last enabled. dot3StatsInRangeLengthErrors
Counter Read-Only
{dot3StatsEntry 14}
The number of received frames with an incorrect LLC data size.
Zero is always returned. dot3StatsOutOfRangeLengthErrors
Counter Read-Only
{dot3StatsEntry 15}
The number of received frames with an LLC data size that is too large (not including frames that have an Ethernet frame type field).
Zero is always returned. dot3StatsInternalMACReceiveErrors {dot3StatsEntry 16}
Counter Read-Only
The number of times a frame reception failed due to an error condition not already accounted for, since the port was last enabled.
3.3 ETHERNET-LIKE COLLISION STATISTICS GROUP
dot3CollTable {dot3 5}
This group is minimally supported (i.e., the ELS10-26 returns a
GetResponse with a noSuchName ErrorStatus).
3-5
Ethernet MIB
3.4 ETHERNET-LIKE TESTS GROUP
dot3Tests {{dot3 6}
There are no MIB variables in this group.
3.5 ETHERNET-LIKE ERRORS GROUP
dot3Errors
There are no MIB variables in this group.
{dot3 7}
3.6 ETHERNET-LIKE CHIPSETS GROUP
dot3ChipSets {dot3 8}
There are no MIB variables in this group.
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