Red Hat NETWORK 4.0.5 - CHANNEL MANAGEMENTT GUIDE Průvodce řešením problémů stáhnout pdf (Strana 33)

F5 SDC Troubleshooting Guide

Proprietary and Confidential Information of F5 Networks

Figure 4: Parsing Offset

This analysis shows that the error in the offset started when parsing the AVP which came

before the “AMBR” AVP which is the “SS-Status” AVP.

After debugging the parsing of the “SS-Status” AVP, it was found that this AVP was parsed as

a grouped AVP while it did not hold any grouped information. The reason for the parsing error

was an error in the diameter dictionary in which the “SS-Status” AVP was marked as a

grouped AVP instead of as an octet sting AVP. Changing the AVP type in the dictionary

resolved the issue.

Symptoms

The following section describes the error condition and its relevant error message.

 The buffer offset is out of sync with the message AVPs during parsing. CPF

starts parsing AVPs from the wrong buffer index causing illegal field values to

be read.

 Error Message:

Internal warning: An attempt to create an AVP list from SlicedChannelBuffer(ridx=0,

widx=1328, cap=1328) had failed. [Client Worker_4_11]

[DiameterParsedGroupedAvp.getVendorSpecificAvpSet()]

com.traffix.openblox.diameter.exceptions.InvalidAvpLengthValidationException:

Invalid avp length 1435 to avp with code 83886080 and vendorId 0

Resolution

When encountering such parsing issues, you need to find the root cause (with Wireshark) to

resolve the issue.

 To find the root cause of the AVP parsing error:

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 41 42

Žádné komentáře

Red Hat NETWORK 4.0.5 - CHANNEL MANAGEMENTT GUIDE Průvodce řešením problémů Strana 33