Surveyor

User’s Guide

Network Layer

Duplicate Network Address

A separate table showing duplicate network addresses is available. Press the button on the Data View or Capture View toolbar to see this table.

Counter

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

IP address 0.0.0.0 is not counted as a duplicate address.

Expert Symptom

Duplicate network addresses are automatically logged as either “Duplicate IP Address” or “Duplicate IPX Address” expert symptoms. The Symptom Summary field provides information about the duplicate IP or IPX address. For example:

Addr=[206.250.228.67]

Diagnostic Details

__________________________________________________________________

Problem Description:

This network address has multiple MAC station address associations. This is a serious problem if the associated MAC stations are not routers.

__________________________________________________________________

Probable Cause(s):

1.An existing network address has been assigned to a new machine without verification.

2.An old (discarded) machine using this address has been re-introduced into the network.

__________________________________________________________________

Recommended Action(s):

1.Change the network address of one or more hosts so that there are no duplicates.

10-58

Page 262
Image 262
Finisar Surveyor manual Network Layer, Duplicate Network Address, Addr=206.250.228.67