The Device Statistics Screen
5.8.5Isolating Errors Fields (Group 3)
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.
Line Errors | 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.
Burst Errors | 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.
AC Errors | 3 |
These Address Recognized/Frame Copied errors may indicate that the reporting station’s NAUN is
Abort Transmit Errors | 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.
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