Finisar Surveyor manual Icmp Fragment Reassembly Time Exceeded, Counter

Surveyor

User’s Guide

ICMP Fragment Reassembly Time Exceeded

Counter

ICMP Fragment Reassembly Time Exceeded events are counted in the All ICMP Errors counter. A count of all ICMP errors displays in the Overview counters of Expert View. A threshold can be set in Expert Alarms for all ICMP errors.

Expert Symptom

ICMP Fragment Reassembly Time Exceeded events are automatically logged as expert symptoms. The Symptom Summary field provides information about the IP addresses involved. For example:

Sent by Destination Host [206.250.228.69] to

[206.250.228.11]. SA=[206.250.228.11] DA=[206.250.228.69]

Diagnostic Details

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Problem Description:

An ICMP Fragment Reassembly Time Exceeded message has been sent.

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Probable Cause(s):

1.A host may send this message if it cannot reassemble the fragments (due to missing fragments) on time.

2.There may be a lot of missing IP fragments (possibly due to NFS traffic or network overload).

3.The routing tables may be incorrect on the source.

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Recommended Action(s):

1.Check the routing tables of the source.

2.Check the netmask configuration of the source.

3.Check for missing IP fragments.

4.May need to upgrade the host that sent this message.

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