對4G ASR KPI效能降低進行故障排除，因為mme-hss-user-unknown斷開原因增加

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已更新: 2019 年 7 月 17 日

文件 ID:214633

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簡介

本文描述如何解決當mme-hss-user-unknown斷開原因增加時，4G連線成功率(ASR)關鍵效能指標(KPI)出現降級時發生的問題。

必要條件

需求

思科建議您瞭解以下主題：

5000/5500的硬體知識
StarOS

採用元件

本文件所述內容不限於特定軟體和硬體版本。

本文中的資訊是根據特定實驗室環境內的裝置所建立。
文中使用到的所有裝置皆從已清除（預設）的組態來啟動。如果您的網路運作中，請確保您瞭解任何指令可能造成的影響。

縮寫

ASR	配售成功率
KPI	關鍵績效指標
空氣	身份驗證資訊請求
AIA	驗證資訊應答
CER	功能交換請求
CEA	功能交換答案
MME	行動化管理實體
HSS	家庭使用者伺服器
DPC	資料處理卡
RFC	要求建議
AVP	屬性 — 值對

問題

服務提供商報告一個MME中的4G ASR降級，並且斷開原因「mme-hss-user-unknown」增加。

「mme-hss-user-unknown(375)」斷開原因描述由於MME HSS使用者未知而斷開的會話總數。

捕獲的一個故障跟蹤報告HSS在AIA消息中拒絕身份驗證作為結果代碼DIAMETER_MISSING_AVP(5005)。

MME不斷從HSS獲得「DIAMETER_MISSING_AVP(5005)」，AIA消息出現故障的情況如下：

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

疑難排解

本節提供的資訊可用於解決由於mme-hss-user-unknown斷開原因增加而導致ASR KPI降級的問題。

對收集的「mon sub」進行跟蹤，並將其與成功和失敗方案進行比較。從MME到HSS伺服器的AIR中缺少受支援的功能AVP。

從mon子跟蹤中捕獲成功的AIR和AIA消息。這是從MME傳送到HSS的AIR消息：

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

從HSS傳送到MME的AIA消息為：

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)

從mon子跟蹤捕獲故障AIR和AIA消息。

從MME傳送到HSS的AIR消息為：

<<<<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

從HSS傳送到MME的AIA消息為：

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

根據 mon子跟蹤，對於0004-diamproxy（僅與DPC卡2關聯），收到錯誤「DIAMETER_MISSING_AVP(5005)」。

[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#

對於僅與DPC卡2關聯的例項sessmgr例項，似乎增加了「 mme-hss-user-unknown」斷開原因。

******** 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

進一步檢查後，對於具有DPC卡2的HSS對等裝置，支援的供應商ID為「無」。

[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

解決方案

「支援的供應商ID」AVP似乎沒有與DPC卡2協商，因此只觀察到該卡的故障。

根據RFC 3588,
Supported-Vendor-Id AVP — 這用於CER和CEA消息中，以通知對等體傳送方支援（AVP中標識的供應商所定義的供應商特定AVP的子集）。
Vendor-Id AVP — 與Supported-Vendor-Id AVP結合使用，可用於瞭解哪些供應商特定的屬性可能會傳送到對等體。

為了在diameter對等體與客戶端之間交換功能，向服務提供商建議此行動計畫。

行動計畫是遷移DPC卡2和備用DPC卡10。

[local]SGSN-MME-03# card migrate from 2 to 10 
Are you sure? [Yes|No]: yes

服務提供商執行了與備用DPC卡10的DPC卡2遷移。

在活動後，對於具有各自的hss-peer的卡10，支援的供應商ID(10415)似乎正常，ASR KPI似乎也正常。

[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>

在MME和HSS之間建立Diameter對等連線以便交換操作Diameter消息時，支援的供應商ID應為「10415」值。

由思科工程師貢獻

Tushar Patel
Cisco TAC工程師

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