Finisar Surveyor manual Illegal Network Source Address, Addr=255.255.255.255

Expert Features 10

Network Layer

Illegal Network Source Address

Counter

Illegal Network Source Address is a counter of all illegal network source addresses over a period of time per segment. A count of all illegal MAC source addresses displays in the Overview counters of Expert View. A threshold for this counter can be set in Expert Alarms.

Expert Symptom

Illegal network source addresses are automatically logged as expert symptoms. The Symptom Summary field provides the illegal address encountered. For example:

Addr=[255.255.255.255]

This symptom can help catch malfunctioning routers or bad addresses generated due to collisions.

Diagnostic Details

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Problem Description:

A broadcast network address has appeared as a source address.

This is a problem associated with a bad host.

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Probable Cause(s):

1.Someone is transmitting illegal frames using a traffic generator.

2.There may be a faulty adapter card/host.

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Recommended Action(s):

1. Filter on the MAC address to determine the faulty card and replace it.

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