Network OS Administration Guide

Supporting Network OS 6.0.1a

Part Number: 53-1003768-04

Interface error types

The following table describes the interface counters that can be monitored on external interfaces.

Table 34 Interface errors that can be monitored on external interfaces

Interface area

Description

Port Fencing support

Threshold defaults

MissingTerminationCharacter

Number of frames terminated by anything other than the Terminate character; this includes termination due to the Error character.

No

Low 12

Buffer 0

High 300

CRCAlignErrors

Total number of frames received that had a length (excluding framing bits but including Frame Check Sequence (FCS) octets) of between 64 and 1518 octets. The error indicates either a bad FCS with an integral number of octets (an FCS error) or a bad FCS with a non-integral number of octets (an alignment error).

No

Low 12

Buffer 0

High 300

IFG

Minimum-length interframe gap (IFG) between successive frames is violated. A typical IFG is 12 bytes.

Yes

Low 5

Buffer 0

High 100

SymbolErrors

An undefined (invalid) symbol received on the interface. Large symbol errors indicate a bad device, cable, or hardware.

No

Low 0

Buffer 0

High 5

NOTE
The default setting for above high threshold, above low threshold, below high threshold, and below low threshold actions is "[none]."