Finisar Surveyor manual Jabber Frame, CRC error with more than 1518 bytes

Surveyor

User’s Guide

Jabber Frame

Counter

The Jabber Frame counter increments when a frame has a CRC error and is greater than 1518 bytes in length. A count of all Jabber Frames is included in the Bad Frames counter that displays in the Overview counters of Expert View. The Jabber counter is used for Expert Alarms.

Expert Symptom

Jabber Frame events are automatically logged as expert symptoms. The Symptom Summary field contains the following information:

CRC error with more than 1518 bytes

Diagnostic Details

__________________________________________________________________

Problem Description:

A packet with more than 1518 bytes of data and a CRC error has been received.

__________________________________________________________________

Probable Cause(s):

1.The network is overloaded, resulting in too many collisions.

2.A faulty hub/switch/router device.

3.An end station may have a faulty network interface card.

4.A protocol analyzer has been transmitting error packets.

__________________________________________________________________

Recommended Action(s):

1. Find out the source device and fix the problem.

10-112