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User’s Guide
ICMP Required IP Option Missing
Counter
ICMP Required IP Option Missing events are counted in the ICMP All 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 Required IP Option Missing events are automatically logged as expert
symptoms. The
Symptom Summary field provides information about the IP
addresses involved. For example:
Bad IP Header sent from [206.250.228.11] to
[206.250.228.69]. SA=[206.250.228.11] DA=[206.250.228.69]
Diagnostic Details
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Problem Description:
An ICMP Parameter Problem (IP Options required, but, missing) message has been sent.
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Probable Cause(s):
1. A host/router may send this message if the IP header parameters have
problems that prevent processing of the packet.
2. A host/router may have a bad network stack or a bad interface card.
3. There may be incorrect arguments in IP options.
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Recommended Action(s):
1. Check the ICMP Pointer field to see the octet in the IP header where the error
was detected.
2. Verify that the source that sent this IP header has a good network interface card.
3. Verify that the network stack on the source that sent the bad IP header
parameters is working properly.