Cabletron Systems STHI 사용자 설명서

Page 5-25

Frames reporting isolating errors provide information that can be used to 
determine the physical domain of a fault. These errors are common soft 
errors, meaning that they are to be expected and can be overcome by 
normal Token Ring operations. While they will not completely halt a 
network, excessive soft errors reduce a network’s efficiency.

1

Line Errors are corrupted frames normally caused by stations entering and 
leaving the ring. Replacement frames are automatically generated.

This error can also indicate a problem with the receiver of the reporting 
node, or the transmitter of its Nearest Active Upstream Neighbor 
(NAUN), or the cabling and hub hardware between them.

2

A burst error is an absence of clocking signals at a node’s receiver. This 
error normally occurs when passive stations (those that do not generate 
phantom current) enter or leave the ring.

This error can also indicate a problem with the receiver of the reporting 
node, or the transmitter of its NAUN, or the cabling and hub hardware 
between them.

3

These Address Recognized/Frame Copied errors may indicate that the 
reporting station’s NAUN is faulty—unable to set the address recognized 
indicator and/or frame copied indicator bits in the frame which it has 
copied, leaving the downstream node with an incorrect NAUN address.

4

This displays the number of abort delimiter frames transmitted by a 
station. A frame of this type may indicate that either the reporting node 
has detected an error on itself, or there is an error with its NAUN or the 
cabling and wiring hubs between them.