Avaya Troubleshooting Routers Instrukcja Naprawy Pobierz pdf (Strona 88)

Troubleshooting Routers

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308656-14.00 Rev 00

• wfCSMACDOctetsRxOk

This shows the number of bytes received without error.

• wfCSMACDFramesRxOk

This shows the number of frames received without error.

• wfCSMACDOctetsTxOk

This shows the number of bytes transmitted without error.

• wfCSMACDFramesTxOk

This shows the number of frames transmitted without error.

• wfCSMACDDeferredTx

This shows the number of deferred transmissions. The Ethernet port

detected a frame transmitting on the segment when it was preparing to

transmit another frame. This is not an error, but an indication of a busy

segment. If this statistic changes rapidly, determine why the segment is so

busy.

• wfCSMACDLateCollnTx

This shows the number of late collisions transmitted. A late collision

transmission is a collision that takes place after the router transmits the

first 64 bytes of a frame. The Ethernet controller chip (ILACC, Integrated

Local Area Communications Controller) does not retransmit the frame.

The length of the Ethernet cable exceeds the specified length. Use a cable

length that complies with the IEEE 802.3 specification.

Late collisions may indicate that the Ethernet LAN exceeds the length of

the IEEE 802.3 specification.

• wfCSMACDExcessvCollnTx

This shows the number of excessive collisions. The software declares an

excessive collision when 16 successive attempts to transmit a frame fail

because each attempt results in a collision. The router discards the frame

and adds one to the error count.

This is an indication of an overloaded segment with possible data storms.

Analyze this segment in order to determine what type of traffic is causing

the problem.

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Avaya Troubleshooting Routers Instrukcja Naprawy Strona 88