TNETX3100PGC datasheet(52/80 Pages) TI1

52 / 80 page

TNETX3100

ThunderSWITCH™ 10-PORT 10-/100-MBIT/S ETHERNET™ SWITCH

SPWS031D – JUNE 1997 – REVISED OCTOBER 1997

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

glossary

address duplications

The number of address duplications between a securely assigned port address within the TNETX3100 and a

source address observed on this port. Occurrence of this causes the TNETX3100 to suspend the port (see

port-N status register section for description).

address mismatches/address changes

The sum of:

The number of mismatches seen on a port between a securely assigned port address and the source

address observed on the port. Occurrence of this causes the TNETX3100 to suspend the port (see

port-N

status register section for description).

The number of times the TNETX3100 is required to assign or learn an address for a port

broadcast RX frames

The total number of good packets received that were directed to the broadcast address. This does not include

multicast packets.

broadcast TX frames

The total number of packets transmitted that were directed to the broadcast address. This does not include

multicast packets. See IEEE Std 802.3 Supplements, Layer Management (section 5) 5.2.2.1.1, number 6.

carrier sense errors

The number of times that the carrier sense condition was lost or never asserted when attempting to transmit

a frame on a particular interface. The count is incremented, at most, once for every transmission attempt, even

if the carrier sense condition fluctuates during a transmission attempt.

collisions port (02–09)

The number of times that the port’s transmitter was required to send a jam sequence

The following counters are implemented in previously described counters.

deferred TX frames

A count of the frames for which the first transmission attempt on a particular interface is delayed because the

medium was busy

excessive collisions

A count of frames for which transmission on a particular interface fails due to excessive collisions

filtered RX frames

The count of frames received but discarded due to lack of resources (TXQ full, destination disabled, or RX

errors). The number of frames sent to the TNETX3100 discard channel for any reason.

good RX frames

The total number of good packets (including unicast, broadcast packets, and multicast packets) received

good TX frames

The total number of packets (including bad packets, broadcast packets, and multicast packets) transmitted

successfully. See IEEE Std 802.3 Supplements, Layer Management (section 5) 5.2.2.1.1, number 1.

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