Overview

The customer reports that Account Packet Failures are seen periodically on the AAA node for a few of the packets from a specific external Network Element. The customer shares the log entries seen on the external network element:

20-09-2022 13:45 202.83.21.55 Sep 20 2022 08:15:17 BLR-HUAWEI-NE40-X8A-01 -01BRASUM/6/br_aaa(l):CID=0x838c0571;BRAS AAA info: Failed to process the normal realtime accounting. (User=102679192872@web, AcctSessionID=BLR-HUA01273205000581faefb8AAAF0p)

20-09-2022 05:45 202.83.21.55 Sep 20 2022 00:15:17 BLR-HUAWEI-NE40-X8A-01 -01BRASUM/6/br_aaa(l):CID=0x838c0571;BRAS AAA info: Failed to process the normal realtime accounting. (User=102679192872@web, AcctSessionID=BLR-HUA01273205000581faefb8AAAF0p)

20-09-2022 02:49 202.83.21.55 Sep 19 2022 21:19:16 BLR-HUAWEI-NE40-X8A-01 -01BRASUM/6/br_aaa(l):CID=0x838c0571;BRAS AAA info: Failed to process the normal realtime accounting. (User=102760769612@web, AcctSessionID=BLR-HUA07270223500637563d37AAARVn)

Pre-Requisites

Need the following information to process with the analysis

• AAA Server Logs
• PCAP Traces for the calls.

Analysis

• The AAA Server Logs report the following errors for these requests:

28 Oct 2022 14:19:00,217 [WARN] RAD-ACCT-RES-12 [CONCURRENCY_SESSION_MANAGER]: HW-CLIPS&PPPOE-SESSION-MGR- Droping ACCOUNTING-REQUEST, Reason: Attribute(s) 21067:125 bound to coloumn USER_NAME is/are either unavailable in request or empty
28 Oct 2022 14:19:05,044 [WARN] RAD-ACCT-RES-237 [CONCURRENCY_SESSION_MANAGER]: HW-CLIPS&PPPOE-SESSION-MGR- Droping ACCOUNTING-REQUEST, Reason: Attribute(s) 21067:125 bound to coloumn USER_NAME is/are either unavailable in request or empty
28 Oct 2022 14:19:10,102 [WARN] RAD-ACCT-RES-148 [CONCURRENCY_SESSION_MANAGER]: HW-CLIPS&PPPOE-SESSION-MGR- Droping ACCOUNTING-REQUEST, Reason: Attribute(s) 21067:125 bound to coloumn USER_NAME is/are either unavailable in request or empty

• The PCAP Traces for these calls indicate that
  • they are either missing the CLASS AVP or
    • 
  • they do not have AVP 21067:125 value in Class AVP
    • 

Solution

Inform the customer of the following and explain this is expected behavior:

• AVP 21067:125 is mandatory in the Accounting request as it is mapped to Username in Session Manager.
• This AVP is embedded in Class AVP which comes in accounting requests from the external network element.

Explain that the external network element needs to include the AVP as expected by the AAA Server.