AM79C976 datasheet(77/309 Pages) AMD

77 / 309 page

8/01/00

Am79C976

P R E L I M INARY

XmtPackets

RMON etherStatsPkts

RMON etherHistoryPkts

RMON hostOutPkts

RMON hostTimeOutPkts

BRIDGE-MIB dot1dTpPortOutFrames

The number of packets transmitted. This

does not include packets transmitted with

errors (i.e., collision fragments and partial

packets due to transmit FIFO under runs).

XmtBroadCastPkts

RMON etherStatsBroadcastPkts

RMON etherHistoryBroadcastPkts

RMON hostOutBroadcastPkts

RMON hostTimeOutBroadcastPkts

EXT-MIB-II ifOutBroadcastPkts

The number of valid frames transmitted that

are addressed to a broadcast address. This

counter does not include errored broadcast

packets or valid multicast packets.

XmtMultiCastPkts

RMON etherStatsMulticastPkts

RMON etherHistoryMulticastPkts

RMON hostOutMulticastPkts

RMON hostTimeOutMulticastPkts

EXT-MIB-II ifOutMulticastPkts

The number of valid frames transmitted that

are addressed to a multicast address. This

counter does not include errored multicast

packets or valid broadcast packets.

XmtCollisions

RMON etherStatsCollisions

RMON etherHistoryCollisions

The number of collisions that occur during

transmission attempts. Collisions that occur

while the device is not transmitting (i.e.,

receive collisions) are not identifiable and

therefore not counted.

XmtUnicastPkts

MIB-II ifOutUcastPkts

The number of valid frames transmitted that

are not addressed to a multicast or a

broadcast address. This counter does not

include errored unicast packets.

XmtOneCollision

E-like dot3StatsSingleCollisionFrames

The number of packets successfully

transmitted after experiencing one collision.

XmtMultipleCollision

E-like dot3StatsMultipleCollsionFrames

The number of packets successfully

transmitted after experiencing more than one

collision.

XmtDeferredTransmit

E-like dot3StatsDeferredTransmissions

The number of packets for which the first

transmission attempt on the network is

delayed because the medium is busy.

XmtLateCollision

E-like dot3StatsLateCollisions

The number of late collisions that occur. A

late collision is defined as a collision that

occurs more than 512 bit times after the

transmission starts. The 512- bit interval is

measured from the start of preamble.

XmtExcessiveDefer

The number of excessive deferrals that occur.

An excessive deferral occurs when a

transmission is deferred for more than 3036

byte times in normal mode or 3044 byte times

in VLAN mode.

XmtLossCarrier

The number of transmit attempts made when

the LINK_STAT bit in the STAT0 register is 0.

XmtExcessiveCollision

E-like dot3StatsExcessiveCollisions

The number of packets that are not

transmitted because the packet experienced

16 unsuccessful transmission attempts (the

first attempt plus 15 retries).

Offset

(hex)

Transmit Counter Name

MIB Object Supported

Description of Counter/Comments

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