Contents

Introduction

Prerequisites

Requirements

Componentes Utilizados

Abreviaturas

Problema

Troubleshoot

Solução

Introduction

Este documento descreve como solucionar o problema que ocorre quando a degradação do Indicador de Desempenho Chave (KPI - Key Performance Indicator) 4G Attach Success Rate (ASR) ocorre quando o motivo de desconexão mme-hss-user-unknown é aumentado.

Prerequisites

Requirements

A Cisco recomenda que você tenha conhecimento destes tópicos:

- Conhecimento de hardware do 5000/5500

- StarOS

Componentes Utilizados

Este documento não se restringe a versões de software e hardware específicas.

The information in this document was created from the devices in a specific lab environment.

All of the devices used in this document started with a cleared (default) configuration. Se a rede estiver ativa, certifique-se de que você entenda o impacto potencial de qualquer comando.

Abreviaturas

ASR

Anexar taxa de sucesso

KPI

Indicador-chave de desempenho

AR

Solicitação de informações de autenticação

AIA

Resposta de informações de autenticação

CER

Solicitação de troca de recursos

CEA

Resposta de troca de recursos

MME

Entidade de gerenciamento de mobilidade

HSS

Home Subscriber Server

DPC

Placa de processamento de dados

RFC

Solicitação de comentários

AVP

Par atributo-valor

Problema

O provedor de serviços relatou a degradação do ASR 4G em um MME e o motivo da desconexão 'mme-hss-user-unknown' foi aumentado.

"mme-hss-user-unknown(375)" a razão de desconexão descreve o número total de sessões desconectadas porque o usuário do MME HSS é desconhecido.

Um rastreamento de falha capturado relatou que o HSS estava rejeitando a autenticação como código de resultado DIAMETER_MISSING_AVP (5005) na mensagem AIA.

O MME obteve constantemente "DIAMETER_MISSING_AVP (5005)" do HSS e é assim que a mensagem de falha do AIA se parece:

INBOUND>>>>>  From diamproxy:52 oxy_conn_mgmt.c:3406 (Callid 4c0ea07a) 08:42:11:109 Eventid:81991(5)

Diameter message from 10.5.40.X:6000 to 10.0.231.Y:49417

Base Header Information:

Version:            0x01        (1)

Message Length:     0x000110    (272)

Command Flags:      0x40        (64)  PXY

Command Code:       0x00013e    (318) Authentication-Information-Answer

Application ID:     0x01000023  (16777251)   3GPP-S6a

Hop2Hop-ID:         0xadb40545  (2914256197)

End2End-ID:         0x2cafadd5  (749710805)

AVP Information:

[M]  Session-Id

Code:      0x00000107 (263) Session-Id

Flags:     0x40       (64)  [M]

Length:    0x000069   (105)

Data: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNET;1276027002;2496613;5c204e8b-16502

[M]  Auth-Session-State

Code:      0x00000115 (277) Auth-Session-State

Flags:     0x40       (64)  [M]

Length:    0x00000c   (12)

Data: NO_STATE_MAINTAINED (1)

[M]  Origin-Host

Code:      0x00000108 (264) Origin-Host

Flags:     0x40       (64)  [M]

Length:    0x000033   (51)

Data: hss101.epc.mnc0XY.mcc404.3gppnetwork.org

[M]  Origin-Realm

Code:      0x00000128 (296) Origin-Realm

Flags:     0x40       (64)  [M]

Length:    0x000029  (41)

Data: epc.mnc0XY.mcc404.3gppnetwork.org

[M]  Result-Code

Code:      0x0000010c (268) Result-Code

Flags:     0x40       (64)  [M]

Length:    0x00000c   (12)

Data: DIAMETER_MISSING_AVP (5005) >> DIAMETER_MISSING_AVP(5005)received from HSS

[M]  Failed-AVP

Code:      0x00000117 (279) Failed-AVP

Flags:     0x40       (64)  [M]

Length:    0x000018   (24)

[V] [M]  Visited-PLMN-Id

Code:      0x0000057f (1407) Visited-PLMN-Id

Flags:     0xc0       (192) [V]  [M]

Length:    0x00000d   (13)

Vendor-Id: 0x000028af (10415) 3GPP

Data: 0x00

Troubleshoot

Esta seção fornece informações que você pode usar para solucionar o problema de degradação de KPI ASR devido a um aumento no motivo de desconexão mme-hss-user-unknown.

O "submarino mon" coletado é rastreado e comparado ao cenário de sucesso e falha. O AVP de recursos suportados está ausente no AIR do MME para o servidor HSS.

As mensagens AIA e AIR bem-sucedidas são capturadas do subrastreamento mon. Esta é a mensagem AIR enviada de MME para HSS:

Monday December 24 2018

<<<<OUTBOUND  From diamproxy:49 diamproxy_rlf.c:553 (Callid 62adced4) 08:42:39:580 Eventid:81990(5)

Diameter message from 10.0.231.Y:48273 to 10.5.40.X:6000

Base Header Information:

Version:            0x01        (1)

Message Length:     0x0001c4   (452)

Command Flags:      0xc0        (192) REQ PXY

Command Code:       0x00013e    (318) Authentication-Information-Request

Application ID:     0x01000023(16777251)   3GPP-S6a

Hop2Hop-ID:         0xadbdf12a  (2914906410)

End2End-ID:         0x60bd9382  (1623036802)

AVP Information:

[M]Session-Id

Code:      0x00000107 (263) Session-Id

Flags:     0x40      (64)  [M]

Length:    0x000069  (105)

Data: 0001-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNET;1655557844;4204805;5c204ea7-30502

[M]Auth-Session-State

Code:      0x00000115 (277) Auth-Session-State

Flags:     0x40      (64)  [M]

Length:    0x00000c  (12)

Data: NO_STATE_MAINTAINED (1)

[M]Origin-Host

Code:      0x00000108 (264) Origin-Host

Flags:     0x40      (64)  [M]

Length:    0x00004f  (79)

Data: 0001-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

[M]Origin-Realm

Code:      0x00000128 (296) Origin-Realm

Flags:     0x40      (64)  [M]

Length:    0x00002d  (45)

Data: MME.epc.mnc0XY.mcc404.3gppnetwork.org

[M]Destination-Realm

Code:      0x0000011b (283) Destination-Realm

Flags:     0x40      (64)  [M]

Length:    0x000029  (41)

Data: epc.mnc0XY.mcc404.3gppnetwork.org

[M]User-Name

Code:      0x00000001 (1) User-Name

Flags:     0x40      (64)  [M]

Length:    0x000017  (23)

Data: 404XY0000011111

[V]Supported-Features

Code:      0x00000274 (628) Supported-Features

Flags:    0x80       (128) [V]

Length:    0x000038  (56)

Vendor-Id: 0x000028af (10415) 3GPP

[M]Vendor-Id

Code:      0x0000010a (266) Vendor-Id

Flags:     0x40      (64)  [M]

Length:    0x00000c  (12)

Data: 10415

[V]Feature-List-ID

Code:      0x00000275 (629) Feature-List-ID

Flags:     0x80      (128) [V]

Length:    0x000010  (16)

Vendor-Id: 0x000028af (10415) 3GPP

Data: 1

[V]Feature-List

Code:      0x00000276 (630) Feature-List

Flags:     0x80      (128) [V]

Length:    0x000010  (16)

Vendor-Id: 0x000028af (10415) 3GPP

Data: 469763591

[V] [M]Requested-EUTRAN-Authentication-Info

Code:      0x00000580 (1408) Requested-EUTRAN-Authentication-Info

Flags:     0xc0      (192) [V]  [M]

Length:    0x00002c  (44)

Vendor-Id: 0x000028af (10415) 3GPP

[V] [M]  Number-Of-Requested-Vectors

Code:      0x00000582 (1410) Number-Of-Requested-Vectors

Flags:     0xc0      (192) [V]  [M]

Length:    0x000010  (16)

Vendor-Id: 0x000028af (10415) 3GPP

Data: 1

[V] [M]  Immediate-Response-Preferred

Code:      0x00000584 (1412) Immediate-Response-Preferred

Flags:     0xc0      (192) [V]  [M]

Length:   0x000010   (16)

Vendor-Id: 0x000028af (10415) 3GPP

Data: 1

[V] [M]Visited-PLMN-Id

Code:      0x0000057f (1407) Visited-PLMN-Id

Flags:    0xc0       (192) [V]  [M]

Length:    0x00000f  (15)

Vendor-Id: 0x000028af (10415) 3GPP

Data: 0x04f4YX

A mensagem AIA enviada do HSS para o MME é:

INBOUND>>>>>  From diamproxy:49 oxy_conn_mgmt.c:3406 (Callid 62adced4) 08:42:39:601 Eventid:81991(5)

Diameter message from 10.5.40.X:6000 to 10.0.231.Y:48273

Base Header Information:

Version:            0x01        (1)

Message Length:     0x000198   (408)

Command Flags:      0x40        (64)PXY

Command Code:       0x00013e    (318) Authentication-Information-Answer

Application ID:     0x01000023(16777251)   3GPP-S6a

Hop2Hop-ID:         0xadbdf12a  (2914906410)

End2End-ID:         0x60bd9382  (1623036802)

AVP Information:

[M]Session-Id

Code:      0x00000107 (263) Session-Id

Flags:     0x40      (64)  [M]

Length:    0x000069  (105)

Data: 0001-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNET;1655557844;4204805;5c204ea7-30502

[M]Auth-Session-State

Code:      0x00000115 (277) Auth-Session-State

Flags:     0x40      (64)  [M]

Length:    0x00000c  (12)

Data: NO_STATE_MAINTAINED (1)

[M]Origin-Realm

Code:      0x00000128 (296) Origin-Realm

Flags:     0x40      (64)  [M]

Length:    0x000029  (41)

Data: epc.mnc0XY.mcc404.3gppnetwork.org

[M]Origin-Host

Code:      0x00000108 (264) Origin-Host

Flags:     0x40      (64)  [M]

Length:    0x000033  (51)

Data: hss304.epc.mnc0XY.mcc404.3gppnetwork.org

[V] [M]Authentication-Info

Code:      0x00000585 (1413) Authentication-Info

Flags:     0xc0      (192) [V]  [M]

Length:    0x0000a0  (160)

Vendor-Id: 0x000028af (10415) 3GPP

[V] [M]  EUTRAN-Vector

Code:      0x00000586 (1414) EUTRAN-Vector

Flags:     0xc0      (192) [V]  [M]

Length:    0x000094  (148)

Vendor-Id: 0x000028af (10415) 3GPP

[V] [M]  Item-Number

Code:      0x0000058b (1419) Item-Number

Flags:     0xc0      (192) [V]  [M]

Length:    0x000010  (16)

Vendor-Id: 0x000028af (10415) 3GPP

Data: 1

[V] [M]  RAND

Code:      0x000005a7 (1447) RAND

Flags:     0xc0      (192) [V]  [M]

Length:    0x00001c  (28)

Vendor-Id: 0x000028af (10415) 3GPP

Data: 0xc8d8ecce3d684b36ee5aa7aaadaf2658

[V] [M]  XRES

Code:      0x000005a8 (1448) XRES

Flags:     0xc0      (192) [V]  [M]

Length:    0x000014  (20)

Vendor-Id: 0x000028af (10415) 3GPP

Data: 0x7a74729d5a811ac9

[V] [M]  AUTN

Code:      0x000005a9 (1449) AUTN

Flags:     0xc0      (192) [V]  [M]

Length:    0x00001c  (28)

Vendor-Id: 0x000028af (10415) 3GPP

Data: 0xddc5adb739e6800088e9c8135c3099d4

[V] [M]  KASME

Code:      0x000005aa (1450) KASME

Flags:     0xc0      (192) [V]  [M]

Length:    0x00002c  (44)

Vendor-Id: 0x000028af (10415) 3GPP

Data: 0xbf4c4f11f05d9c8c1e39d1066c6cdb92080760e40d0273b015cfffd4a20325fc

[M]Result-Code

Code:      0x0000010c (268) Result-Code

Flags:     0x40      (64)  [M]

Length:    0x00000c  (12)

Data: DIAMETER_SUCCESS (2001)

As mensagens AIR e AIA com falha são capturadas do subrastreamento mon.

A mensagem AIR enviada de MME para HSS é:

<<<<OUTBOUND  From diamproxy:52 diamproxy_rlf.c:553 (Callid 4c0ea07a) 08:42:11:089 Eventid:81990(5)

Diameter message from 10.0.231.Y:49417 to 10.5.40.X:6000

Base Header Information:

Version:            0x01        (1)

Message Length:     0x000150    (336)

Command Flags:      0xc0        (192) REQ PXY

Command Code:       0x00013e    (318) Authentication-Information-Request

Application ID:     0x01000023  (16777251)   3GPP-S6a

Hop2Hop-ID:         0xadb40545  (2914256197)

End2End-ID:         0x2cafadd5  (749710805)

AVP Information:

[M]  Session-Id

Code:      0x00000107 (263) Session-Id

Flags:     0x40       (64)  [M]

Length:    0x000069   (105)

Data: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNET;1276027002;2496613;5c204e8b-16502

[M]  Auth-Session-State

Code:      0x00000115 (277) Auth-Session-State

Flags:     0x40       (64)  [M]

Length:    0x00000c   (12)

Data: NO_STATE_MAINTAINED (1)

[M]  Origin-Host

Code:      0x00000108 (264) Origin-Host

Flags:     0x40       (64)  [M]

Length:    0x00004f   (79)

Data: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

[M]  Origin-Realm

Code:      0x00000128 (296) Origin-Realm

Flags:     0x40       (64)  [M]

Length:    0x00002d   (45)

Data: MME.epc.mnc0XY.mcc404.3gppnetwork.org

[M]  Destination-Realm

Code:      0x0000011b (283) Destination-Realm

Flags:     0x40       (64)  [M]

Length:    0x000029   (41)

Data: epc.mnc0XY.mcc404.3gppnetwork.org

[M]  User-Name

Code:      0x00000001 (1) User-Name

Flags:     0x40       (64)  [M]

Length:    0x000017   (23)

Data: 404XY0000022222

A mensagem AIA enviada do HSS para o MME é:

INBOUND>>>>>  From diamproxy:52 oxy_conn_mgmt.c:3406 (Callid 4c0ea07a) 08:42:11:109 Eventid:81991(5)

Diameter message from 10.5.40.X:6000 to 10.0.231.Y:49417

Base Header Information:

Version:            0x01        (1)

Message Length:     0x000110    (272)

Command Flags:      0x40        (64)  PXY

Command Code:       0x00013e    (318) Authentication-Information-Answer

Application ID:     0x01000023  (16777251)   3GPP-S6a

Hop2Hop-ID:         0xadb40545  (2914256197)

End2End-ID:         0x2cafadd5  (749710805)

AVP Information:

[M]  Session-Id

Code:      0x00000107 (263) Session-Id

Flags:     0x40       (64)  [M]

Length:    0x000069   (105)

Data: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNET;1276027002;2496613;5c204e8b-16502

[M]  Auth-Session-State

Code:      0x00000115 (277) Auth-Session-State

Flags:     0x40       (64)  [M]

Length:    0x00000c   (12)

Data: NO_STATE_MAINTAINED (1)

[M]  Origin-Host

Code:      0x00000108 (264) Origin-Host

Flags:     0x40       (64)  [M]

Length:    0x000033   (51)

Data: hss101.epc.mnc0XY.mcc404.3gppnetwork.org

[M]  Origin-Realm

Code:      0x00000128 (296) Origin-Realm

Flags:     0x40       (64)  [M]

Length:    0x000029   (41)

Data: epc.mnc0XY.mcc404.3gppnetwork.org

[M]  Result-Code

Code:      0x0000010c (268) Result-Code

Flags:     0x40       (64)  [M]

Length:    0x00000c   (12)

Data: DIAMETER_MISSING_AVP (5005)              >>DIAMETER_MISSING_AVP(5005)received from HSS

[M]  Failed-AVP

Code:      0x00000117 (279) Failed-AVP

Flags:     0x40       (64)  [M]

Length:    0x000018   (24)

[V] [M]  Visited-PLMN-Id

Code:      0x0000057f (1407) Visited-PLMN-Id

Flags:     0xc0       (192) [V]  [M]

Length:    0x00000d   (13)

Vendor-Id: 0x000028af (10415) 3GPP

Data: 0x00

De acordo com o sub trace mon, o erro "DIAMETER_MISSING_AVP (5005)" é recebido para 0004-diamproxy, que está associado somente à placa DPC 2.

[local]SGSN-MME-03# show diameter  peers full endpoint DRA1 | grep -i -E "CPU|LOCAL HOST"

Monday December 24 11:34:47 IST 2018

Local Hostname: 0001-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

CPU: 8/1                                Task: diamproxy-49

Local Hostname: 0002-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

CPU: 9/1                                Task: diamproxy-50

Local Hostname: 0003-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

CPU: 3/1                                Task: diamproxy-51

Local Hostname: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

CPU: 2/1                                Task: diamproxy-52

Local Hostname: 0005-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

CPU: 4/1                                Task: diamproxy-53

Local Hostname: 0006-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

CPU: 7/1                                Task: diamproxy-54

Local Hostname: 0001-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

CPU: 8/1                                Task: diamproxy-49

Local Hostname: 0002-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

CPU: 9/1                                Task: diamproxy-50

Local Hostname: 0003-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

CPU: 3/1                                Task: diamproxy-51

Local Hostname: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

CPU: 2/1                                Task: diamproxy-52

Local Hostname: 0005-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

CPU: 4/1                                Task: diamproxy-53

Local Hostname: 0006-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

CPU: 7/1                                Task: diamproxy-54

[local]SGSN-MME-03#

Parece ser que o motivo de desconexão mme-hss-user-unknown é aumentado para a instância do sessmgr que está associada somente à placa DPC 2.

******** show task resources *******

task   cputime        memory     files     sessions

cpu facility      instused  allc   usedalloc used allc  used  allc S status

----------------------- ----------- ------------- --------- ------------- ------

..

2/1 sessmgr        749 3.07%  100% 355.0M 900.0M  173500   881 12000 I   good

2/1 sessmgr        762 2.86%  100% 353.3M 900.0M  171500   881 12000 I   good

<additional outputs supressed>

Disconnect reason for smgr-instance 749:

[local]SGSN-MME-03# show session disconnect-reasons smgr-instance 749|grep -i hss-us

Monday December 24 13:45:17 IST 2018

mme-hss-user-unknown                                          788     8.97597

[local]SGSN-MME-03# show session disconnect-reasons smgr-instance 749|grep -i hss-us

Monday December 24 13:45:19 IST 2018

mme-hss-user-unknown                                          790     8.99158

-------------------- -

Disconnect reason for smgr-instance 762:

[local]SGSN-MME-03# show session disconnect-reasons smgr-instance 762|grep -i hss-us

Monday December 24 13:45:26 IST 2018

mme-hss-user-unknown                                          743     8.16125

[local]SGSN-MME-03# show session disconnect-reasons smgr-instance 762|grep -i hss-us

Monday December 24 13:45:31 IST 2018

mme-hss-user-unknown                                          744     8.16147

[local]SGSN-MME-03# show session disconnect-reasons smgr-instance 762|grep -i hss-us

Monday December 24 13:45:32 IST 2018

mme-hss-user-unknown                                          749     8.20732

[local]SGSN-MME-03# show session disconnect-reasons smgr-instance 762|grep -i hss-us

Monday December 24 13:45:34 IST 2018

mme-hss-user-unknown                                          750     8.20659

Quando verificado novamente, os IDs de fornecedor suportados foram 'none' para o par HSS com a placa DPC 2.

[local]SGSN-MME-03# show diameter peers full peer-host dra01.epc.mnc0XY.mcc404.3gppnetwork.org

-------------------------------------------------------------------------------

Context: s6a                             Endpoint: HSS_DRA01

-------------------------------------------------------------------------------

Peer Hostname: dra01.epc.mnc0xy.mcc404.3gppnetwork.org

Local Hostname: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

Peer Realm: epc.mnc0XY.mcc404.3gppnetwork.org

Local Realm: MME.epc.mnc0XY.mcc404.3gppnetwork.org

Peer Address: 10.5.40.X:6000

State: OPEN [SCTP]

CPU: 2/1                                Task: sessmgr-4

Messages Out/Queued: H0.L0/H0.L0

Supported Vendor IDs: None                          >> Supported Vendor IDs: none instead of 10415

Admin Status: Enable

DPR Disconnect: N/A

Peer Backoff Timer running:N/A

-----------

Peer Hostname: dra01.epc.mnc0xy.mcc404.3gppnetwork.org

Local Hostname: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

Peer Realm: epc.mnc0XY.mcc404.3gppnetwork.org

Local Realm: MME.epc.mnc0XY.mcc404.3gppnetwork.org

Peer Address: 10.5.40.X:6000

State: OPEN [SCTP]

CPU: 2/2                                Task: sessmgr-8

Messages Out/Queued: H0.L0/H0.L0

Supported Vendor IDs: None                          >> Supported Vendor IDs: none instead of 10415

Admin Status: Enable

DPR Disconnect: N/A

Peer Backoff Timer running:N/A

------------

Peer Hostname: dra01.epc.mnc0xy.mcc404.3gppnetwork.org

Local Hostname: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

Peer Realm: epc.mnc0XY.mcc404.3gppnetwork.org

Local Realm: MME.epc.mnc0XY.mcc404.3gppnetwork.org

Peer Address: 10.5.40.X:6000

State: OPEN [SCTP]

CPU: 2/0                                Task: sessmgr-15

Messages Out/Queued: H0.L0/H0.L0

Supported Vendor IDs: None                          >> Supported Vendor IDs: none instead of 10415

Admin Status: Enable

DPR Disconnect: N/A

Peer Backoff Timer running:N/A

------------

Peer Hostname: dra01.epc.mnc0xy.mcc404.3gppnetwork.org

Local Hostname: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

Peer Realm: epc.mnc0XY.mcc404.3gppnetwork.org

Local Realm: MME.epc.mnc0XY.mcc404.3gppnetwork.org

Peer Address: 10.5.40.X:6000

State: OPEN [SCTP]

CPU: 2/0                                Task: sessmgr-20

Messages Out/Queued: H0.L0/H0.L0

Supported Vendor IDs: None                          >> Supported Vendor IDs: none instead of 10415

Admin Status: Enable

DPR Disconnect: N/A

Peer Backoff Timer running:N/A

------------

Peer Hostname: dra01.epc.mnc0xy.mcc404.3gppnetwork.org

Local Hostname: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

Peer Realm: epc.mnc0XY.mcc404.3gppnetwork.org

Local Realm: MME.epc.mnc0XY.mcc404.3gppnetwork.org

Peer Address: 10.5.40.X:6000

State: OPEN [SCTP]

CPU: 2/1                                Task: sessmgr-27

Messages Out/Queued: H0.L0/H0.L0

Supported Vendor IDs: None                          >> Supported Vendor IDs: none instead of 10415

Admin Status: Enable

DPR Disconnect: N/A

Peer Backoff Timer running:N/A

Solução

Parece que o AVP "Suported Vendor IDs" não é negociado com a placa DPC 2 e, portanto, a falha é observada apenas para essa placa.

Conforme o RFC 3588,

Support-Vendor-Id AVP - É usado nas mensagens CER e CEA para informar ao peer que o remetente suporta (um subconjunto de) AVPs específicos do fornecedor definidos pelo fornecedor identificado neste AVP.

Vendor-Id AVP - Em combinação com o Support-Vendor-Id AVP, ele pode ser usado para saber quais atributos específicos do fornecedor podem ser enviados ao peer.

Para trocar os recursos entre o ponto de diâmetro e o cliente, este plano de ação é sugerido ao provedor de serviços.

O plano de ação é migrar a Placa DPC 2 com a Placa DPC em standby 10.

[local]SGSN-MME-03# card migrate from 2 to 10

Are you sure? [Yes|No]: yes

O provedor de serviços realizou a migração da Placa DPC 2 com a placa DPC em standby 10.

Após a atividade, as IDs de fornecedor suportadas (10415) pareceram estar ok para a placa 10 com o respectivo hss-peer e o ASR KPI também parecia estar ok.

[local]SGSN-MME-03# show diameter peers full peer-host dra01.epc.mnc0XY.mcc404.3gppnetwork.org

-------------------------------------------------------------------------------

Context: s6a                             Endpoint: HSS_DRA01

-------------------------------------------------------------------------------

Peer Hostname: dra01.epc.mnc0xy.mcc404.3gppnetwork.org

Local Hostname: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

Peer Realm: epc.mnc0XY.mcc404.3gppnetwork.org

Local Realm: MME.epc.mnc0XY.mcc404.3gppnetwork.org

Peer Address: 10.5.40.X:6000

State: OPEN [SCTP]

CPU: 10/1                               Task: sessmgr-4

Messages Out/Queued: H0.L0/H0.L0

Supported Vendor IDs: 10415                          >> Supported Vendor IDs: 10415

Admin Status: Enable

DPR Disconnect: N/A

Peer Backoff Timer running:N/A

------------

Peer Hostname: dra01.epc.mnc0xy.mcc404.3gppnetwork.org

Local Hostname: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

Peer Realm: epc.mnc0XY.mcc404.3gppnetwork.org

Local Realm: MME.epc.mnc0XY.mcc404.3gppnetwork.org

Peer Address: 10.5.40.X:6000

State: OPEN [SCTP]

CPU: 10/0                               Task: sessmgr-15

Messages Out/Queued: H0.L0/H0.L0

Supported Vendor IDs: 10415                          >> Supported Vendor IDs: 10415

Admin Status: Enable

DPR Disconnect: N/A

Peer Backoff Timer running:N/A

------------

Peer Hostname: dra01.epc.mnc0xy.mcc404.3gppnetwork.org

Local Hostname: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

Peer Realm: epc.mnc0XY.mcc404.3gppnetwork.org

Local Realm: MME.epc.mnc0XY.mcc404.3gppnetwork.org

Peer Address: 10.5.40.X:6000

State: OPEN [SCTP]

CPU: 10/1                               Task: sessmgr-27

Messages Out/Queued: H0.L0/H0.L0

Supported Vendor IDs: 10415                          >> Supported Vendor IDs: 10415

Admin Status: Enable

DPR Disconnect: N/A

Peer Backoff Timer running:N/A

------------

Peer Hostname: dra01.epc.mnc0xy.mcc404.3gppnetwork.org

Local Hostname: 0004-diamproxy.MMEC001.MMEGI32000.MME.EPC.MNC0XY.MCC404.3GPPNETWORK.ORG

Peer Realm: epc.mnc0XY.mcc404.3gppnetwork.org

Local Realm: MME.epc.mnc0XY.mcc404.3gppnetwork.org

Peer Address: 10.5.40.X:6000

State: OPEN [SCTP]

CPU: 10/2                               Task: sessmgr-29

Messages Out/Queued: H0.L0/H0.L0

Supported Vendor IDs: 10415                          >> Supported Vendor IDs: 10415

Admin Status: Enable

DPR Disconnect: N/A

Peer Backoff Timer running:N/A

<additional outputs supressed>

As IDs de fornecedor suportadas devem ter o valor '10415' quando a conexão por diâmetro é estabelecida entre MME e HSS para trocar as mensagens de diâmetro operacional.