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7750-BRAS故障高级培训


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7750 BRAS 维护故障处理 介绍

IP TSC 何锋

All Rights Reserved ? Alcatel-Lucent @@YEAR

Module Objectives

/>7750 故障处理
日常维护 物理故障处理 BRAS常见故障处理 BRAS 中radius配置介绍

7750日常维护介绍 · 2

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1 日常维护

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1 日常维护

1.1 log 99/100
Log 99 是系统默认的main信息,保存在内存中 Log 100是系统默认的严重告警信息(是log 99的严重告警部分) Syslog 建议配置。 将main,security,change内容送syslog服务器

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1.1.1 7750 log体系

Log Event Control and Filters
Events Applications generate events. Applications include: BGP, IP, OSPF, Ports, System,Users, MPLS and others.

Log IDs Event Logger
Main Security Change

Event Filter
Ma tch
Application id Event id Severity Subject string

Destination
Console Session Syslog File Memory SNMP Trap Group

Opera tors Eq, neq, lt, lte, gt, gte Action Drop or Forward

Event Control
Alarm Severity

DebugTrace

Suppress

Generate

7750 SR Security and Logs

All rights reserved ? 2004, Alcatel

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1.2 常用show 命令

#show uptime # show system information #show system cpu #show system memory-pools #show system connections #Show system security user #show users #show bof #show chassis #show card detail #show mda detail show port x/x/x [detail]

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Log查看
Show log log-collector (查看系统有哪些log)
A:7750# show log log-collector =============================================================================== Log Collectors =============================================================================== Main Logged : 3552 Dropped : 0 Dest Log Id: 99 Filter Id: 0 Status: enabled Dest Type: memory Dest Log Id: 91 Filter Id: 0 Status: enabled Dest Type: syslog Dest Log Id: 93 Filter Id: 0 Status: enabled Dest Type: memory Dest Log Id: 98 Filter Id: 0 Status: enabled Dest Type: snmp Security Logged : 5501 Dropped : 0 Dest Log Id: 91 Filter Id: 0 Status: enabled Dest Type: syslog Dest Log Id: 98 Filter Id: 0 Status: enabled Dest Type: snmp Change Logged : 5646 Dropped : 0 Dest Log Id: 91 Filter Id: 0 Status: enabled Dest Type: syslog Debug Logged : 837 Dest Log Id: 92 Filter Id: 0 LI Logged : 245 Dropped : 0 Status: enabled Dest Type: memory Dropped : 0

===============================================================================

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Log查看
Show log log-id 99 (默认只有500个条目,保存在memory中)
A:7750# show log log-id 99 =============================================================================== Event Log 99 =============================================================================== Description : (Not Specified) Memory Log contents [size=500 next event=3485 (wrapped)] 3484 2010/06/21 14:41:39.96 BJT MINOR: PORT #2030 Base Port 2/1/1 "XFP/SFP DDM (rxOpticalPower-low-alarm)" 3483 2010/06/21 14:38:39.96 BJT MINOR: PORT #2030 Base Port 2/1/1 "XFP/SFP DDM (rxOpticalPower-low-alarm)" 3482 2010/06/21 14:37:39.96 BJT MINOR: PORT #2030 Base Port 2/1/1 "XFP/SFP DDM (rxOpticalPower-low-warning)" 3481 2010/06/21 14:26:39.95 BJT MINOR: PORT #2030 Base Port 2/1/1 "XFP/SFP DDM (rxOpticalPower-low-warning)" 3480 2010/06/21 14:23:39.96 BJT MINOR: PORT #2030 Base Port 2/1/1 "XFP/SFP DDM (rxOpticalPower-low-warning)"

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2 硬件维护

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查看整机
A:7750-SR7FW01# show chassis

show chassis

=============================================================================== Chassis Information =============================================================================== Name : 7750-SR7FW01 Type : 7750 SR-7 Location : Coordinates : CLLI code : Number of slots :7 Number of ports : 50 Critical LED state : Off Major LED state : Off Minor LED state : Off Over Temperature state : OK Base MAC address : 00:16:4d:e6:cd:91 Admin chassis mode :c Oper chassis mode :c Hardware Data Part number : 3HE02605AAAA01 CLEI code : Serial number : YP0821A02AF Manufacture date : 05282008 Manufacturing string : Manufacturing deviations : Time of last boot : 2010/06/11 11:12:37 Current alarm state : alarm cleared -------------------------------------------------------------------------------

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查看整机con’t
show chassis 电源模块、风扇盘
------------------------------------------------------------------------------Environment Information Number of fan trays :2 Number of fans :4 Fan tray number Status Speed :1 : up : half speed

Fan tray number :2 Status : up Speed : half speed ------------------------------------------------------------------------------Power Supply Information Number of power supplies :2 Power supply number :1 Defaulted power supply type : dc Power supply model : pem Status : up Power supply number :2 Defaulted power supply type : dc Power supply model : pem Status : up ===============================================================================
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查看IOM板卡
show card 1 detail
=============================================================================== Card 1 =============================================================================== Slot Provisioned Equipped Admin Operational Comments Card-type Card-type State State ------------------------------------------------------------------------------1 iom3-xp iom3-xp up up IOM Card Specific Data Clock source Named Pool Mode Available MDA slots Installed MDAs

: none : Disabled :2 :1

FP 1 Specific Data WRED Admin State : Out Of Service WRED buffer-allocation max : 2500 WRED buffer-allocation min : 2500 WRED reserved-cbs max : 2500 WRED reserved-cbs min : 2500 WRED Slope Policy : default hi-bw-mc-srcEgress Alarm :2 hi-bw-mc-srcEgress Group :0 mc-path-mgmt Admin State : Out Of Service Ingress Bandwidth Policy : default
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查看IOM板卡[cont.]
show card 1 detail
Hardware Data Platform type : 7750 Part number : 3HE03619AAAA01 CLEI code : IPU3AC9EAA Serial number : NS085270076 Manufacture date : 12222008 Manufacturing string : Manufacturing deviations : Administrative state : up Operational state : up Temperature : 39C Temperature threshold : 75C Software boot (rom) version : X-8.0.R1 on Tue Mar 2 18:05:14 PST 2010 by * Software version : TiMOS-I-8.0.R1 iom/hops ALCATEL SR 7750 Cop* Time of last boot : 2010/04/29 17:12:11 Current alarm state : alarm cleared Base MAC address : 00:1a:f0:bd:89:d7 Last bootup reason : hard boot Memory capacity : 2,048 MB ===============================================================================

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查看MDA板卡
show mda 1/1 detail
=============================================================================== MDA 1/1 detail =============================================================================== Slot Mda Provisioned Equipped Admin Operational Mda-type Mda-type State State ------------------------------------------------------------------------------1 1 m10-1gb-sfp-b m10-1gb-sfp-b up up MDA Specific Data Maximum port count : 10 Number of ports equipped : 10 Network ingress queue policy : default Capabilities : Ethernet Hardware Data Platform type : 7750 Part number : 3HE02617AAAB01 CLEI code : Serial number : NS082070104 Manufacture date : 05122008 Manufacturing string : Manufacturing deviations : Administrative state : up Operational state : up Temperature : 34C Temperature threshold : 75C Software version : N/A Time of last boot : 2010/06/11 11:12:38 Current alarm state : alarm cleared Base MAC address : 00:1a:f0:bd:84:2b ------------------------------------------------------------------------------QOS Settings ------------------------------------------------------------------------------Ing. Named Pool Policy : None Egr. Named Pool Policy : None2010 All Rights Reserved ? Alcatel-Lucent ===============================================================================

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查看端口状态
show port 1/1/1 detail
=============================================================================== Ethernet Interface =============================================================================== Description : 10/100/Gig Ethernet SFP Interface : 1/1/1 Oper Speed : 1 Gbps Link-level : Ethernet Config Speed : 1 Gbps Admin State : up Oper Duplex : full Oper State : up Config Duplex : full Physical Link : Yes MTU : 1526 Single Fiber Mode : No IfIndex : 35684352 Hold time up : 0 seconds Last State Change : 06/11/2010 11:12:38 Hold time down : 0 seconds Last Cleared Time : N/A DDM Events : Enabled Configured Mode : network Dot1Q Ethertype : 0x8100 PBB Ethertype : 0x88e7 Ing. Pool % Rate : 100 Ing. Pool Policy : n/a Egr. Pool Policy : n/a Net. Egr. Queue Pol: default Egr. Sched. Pol : n/a Auto-negotiate : false Accounting Policy : None Egress Rate : Default Load-balance-algo : default Down-when-looped : Disabled Loop Detected : False Use Broadcast Addr : False Sync. Status Msg. : Disabled Configured Address : 00:1a:f0:bd:84:2b Hardware Address : 00:1a:f0:bd:84:2b Cfg Alarm : Alarm Status All Rights Reserved ? Alcatel-Lucent 2010 : Encap Type : null QinQ Ethertype : 0x8100 Egr. Pool % Rate : 100

MDI/MDX : unknown Collect-stats : Disabled Ingress Rate : Default LACP Tunnel : Disabled Keep-alive : 10 Retry : 120 Rx Quality Level : N/A

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查看端口状态[cont.1]
Transceiver Data Transceiver Type : SFP Model Number : 3HE00028AAAA02 ALA IPUIAEMDAB TX Laser Wavelength: 1310 nm Diag Capable : yes Connector Code : LC Vendor OUI : 00:06:b5 Manufacture date : 2008/04/30 Media : Ethernet Serial Number : 85VT200932 Part Number : SPGBLXTDBAL Optical Compliance : GIGE-LX Link Length support: 10km for SMF =============================================================================== Transceiver Digital Diagnostic Monitoring (DDM), Externally Calibrated =============================================================================== Value High Alarm High Warn Low Warn Low Alarm ------------------------------------------------------------------------------Temperature (C) +39.9 +98.0 +96.0 -42.0 -43.0 Supply Voltage (V) 3.30 4.12 3.60 3.00 2.80 Tx Bias Current (mA) 21.7 100.0 85.0 7.5 5.0 Tx Output Power (dBm) -5.99 -1.00 -2.00 -10.00 -11.00 Rx Optical Power (avg dBm) -12.15 -1.00 -2.00 -23.01 -24.00 =============================================================================== =============================================================================== Traffic Statistics =============================================================================== Input Output ------------------------------------------------------------------------------Octets 118435578111 18320206725 Packets 839234092 74106258 Errors 0 0 ===============================================================================

show port 1/1/1 detail SFP DDM

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查看端口状态[cont.2]
show port 1/1/1 detail Octets 端口流量统计 Packets

=============================================================================== Ethernet Statistics =============================================================================== Broadcast Pckts : Multicast Pckts : Undersize Pckts : Oversize Pckts : Collisions : : : 2 Drop Events : 13249027 CRC/Align Errors : 0 Fragments : 0 Jabbers : 0 0 0 0 0

136755784836 913340350 Packets of 64 Octets : 15834072 Packets of 65 to 127 Octets : 398081434 Packets of 128 to 255 Octets : 480059373 Packets of 256 to 511 Octets : 3643327 Packets of 512 to 1023 Octets : 6513692 Packets of 1024 to 1518 Octets : 9208398 Packets of 1519 or more Octets : 54 =============================================================================== =============================================================================== Port Statistics =============================================================================== Input Output ------------------------------------------------------------------------------Unicast Packets 836985259 63106062 Multicast Packets 2248832 11000195 Broadcast Packets 1 1 Discards 0 0 Unknown Proto Discards 0 =============================================================================== =============================================================================== Ethernet-like Medium Statistics =============================================================================== Alignment Errors : 0 Sngl Collisions : 0 FCS Errors : 0 Mult Collisions : 0 SQE Test Errors : 0 Late Collisions : 0 CSE : 0 Excess Collisns : 0 All : Too long Frames Rights Reserved ? Alcatel-Lucent MAC Tx Errs : 0 Int 2010 0 Symbol Errors : 0 Int MAC Rx Errs : 0 In Pause Frames : 0 Out Pause Frames : 0 ===============================================================================

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3 BRAS业务相关

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查看PPPoE用户
show service active-subscribers summary 所有在线用户的总数
show service active-subscribers summary =============================================================================== Active Subscriber table summary =============================================================================== Total Count : 7646 ===============================================================================

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查看PPPoE用户
show service id 100 pppoe summary 所有在线PPPoE用户的总数
show service id 100 pppoe summary =============================================================================== PPPoE Summary info for IES svc-id 100 =============================================================================== Number of sessions : 7685 ===============================================================================

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查看PPPoE用户
查看某个pppoe用户的具体信息。 show service show service show service show service show service show service show service active-subscribers subscriber xxx detail id xxx pppoe session id xxx pppoe session ip-address 10.13.64.8 detail id xxx subscriber-hosts id xxx subscriber-hosts sap <sap-id> id xxx subscriber-hosts sla-profile <sla-profile-name> id xxx subscriber-hosts ip <ip-prefix/prefix-length>

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查看PPPoE用户

show service active-subscribers subscriber "DGDSL1001030071@16900.gd" detail 查看某个具体用户的信息

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=============================================================================== Active Subscribers =============================================================================== ------------------------------------------------------------------------------Subscriber DGDSL1001030071@16900.gd (DATA) ------------------------------------------------------------------------------I. Sched. Policy : N/A E. Sched. Policy : N/A E. Agg Rate Limit: Max I. Policer Ctrl. : N/A E. Policer Ctrl. : N/A Q Frame-Based Ac*: Disabled Acct. Policy : N/A Collect Stats : Disabled Rad. Acct. Pol. : adsl-acc Dupl. Acct. Pol. : N/A ANCP Pol. : N/A HostTrk Pol. : N/A NAT Policy : N/A Sub. ANCP-String : "DGDSL1001030071@16900.gd" Sub. Int Dest Id : "" Host Trk Rate Adj: N/A ------------------------------------------------------------------------------(1) SLA Profile Instance - sap:[2/2/1:1055.1193] (IES 100 - GE10G-2/2/1) - sla:2M ------------------------------------------------------------------------------Description : (Not Specified) Host Limit :1 Ingress Qos-Policy : 2000 Egress Qos-Policy : 2000 Ingress Queuing Type : Service-queuing (non policer) Ingr IP Fltr-Id : n/a Egr IP Fltr-Id : n/a Ingr IPv6 Fltr-Id : n/a Egr IPv6 Fltr-Id : n/a Ingress Report-Rate : N/A Egress Report-Rate : N/A Egress Remarking : from Sap Qos Credit Control Pol. : N/A ------------------------------------------------------------------------------------------------------------------------------------------------------------IP Address MAC Address PPPoE-SID Origin -------------------------------------------------------27.37.2.246 All Rights Reserved ? Alcatel-LucentIPCP 2010 c8:3a:35:6a:cc:78 1 ===============================================================================

查看pppoe session detail

=============================================================================== PPPoE sessions for svc-id 100 =============================================================================== Sap Id Mac Address Sid Up Time Type IP/L2TP-Id/Interface-Id ------------------------------------------------------------------------------[2/2/5:1209.1001] 00:27:19:4e:81:25 1 5d 04:42:10 Local 27.42.97.143 LCP State : Opened IPCP State : Opened IPv6CP State : Initial PPP MTU : 1492 PPP Auth-Protocol : PAP PPP User-Name : ZHDSL1024022240@16900.gd Subscriber-interface : pppoe Group-interface : ge-1/2/5-qinq Subscriber Origin : Radius Strings Origin : Radius IPCP Info Origin : DHCP IPv6CP Info Origin : None

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查看pppoe session detail(cont’)
Subscriber : "ZHDSL1024022240@16900.gd" Sub-Profile-String : "DATA" SLA-Profile-String : "4M" ANCP-String : "" Int-Dest-Id : "" App-Profile-String : "" Category-Map-Name : "" Primary DNS Secondary DNS Primary NBNS Secondary NBNS Address-Pool : 221.5.88.88 : 210.21.196.6 : N/A : N/A : N/A

IPv6 Prefix : N/A IPv6 Del.Pfx. : N/A Primary IPv6 DNS : N/A Secondary IPv6 DNS : N/A Circuit-Id Remote-Id Service-Name : : :

Session-Timeout : N/A Radius Class : Radius User-Name : ZHDSL1024022240@16900.gd ------------------------------------------------------------------------------Overrides ------------------------------------------------------------------------------Direction Type Key PIR CIR CBS MBS ------------------------------------------------------------------------------------------------------------------------------------------------------------7750日常维护介绍 · 24
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查看radius服务器状态
show subscriber-mgmt authentication "auth_asiainfomod" =============================================================================== Authentication 查看radius 认证服务器状态 Policy auth_asiainfomod
=============================================================================== Description : (Not Specified) Re-authentication : No Username Format : MAC Address PPPoE Access Method : PAP/CHAP Username Append : Nothing Last Mgmt Change : 06/08/2010 10:34:23 ------------------------------------------------------------------------------Include Radius Attributes ------------------------------------------------------------------------------Remote Id : Yes Circuit Id : Yes NAS Port Id : Yes NAS Identifier : Yes PPPoE Service Name : Yes DHCP Vendor Class Id : Yes Access Loop Options : No MAC Address : Yes NAS Port Prefix : HSI NAS Port Suffix : None NAS-Port-Type : No Calling Station Id : Yes (mac) Called Station Id : No Tunnel Server Attr : No DHCP Options : No ------------------------------------------------------------------------------Radius Servers ------------------------------------------------------------------------------Router : Base Source Address : 61.148.144.1* Access Algorithm : Direct Retry :3 Timeout : 10 Fallback Action : deny ------------------------------------------------------------------------------Index IP Address Port Oper State ------------------------------------------------------------------------------1 61.148.150.121 2645 Up ------------------------------------------------------------------------------Ignore Radius Attributes ------------------------------------------------------------------------------All Rights Reserved ? Alcatel-Lucent 2010 No Matching Entries ===============================================================================

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查看radius服务器状态
show subscriber-mgmt radius-accounting-policy "acct_asiainfomod“ =============================================================================== Radius Accounting Policy acct_asiainfomod =============================================================================== 查看radius 计费服务器状态
Description : (Not Specified) Update Interval : 13 Session-id Format : Number Per-Host Accounting : Yes Last Mgmt Change : 06/08/2010 10:34:23 ------------------------------------------------------------------------------Include Radius Attributes ------------------------------------------------------------------------------Framed IP Address : Yes Framed Ip Netmask : Yes Subscriber Id : Yes Circuit Id : Yes Remote Id : Yes NAS Port Id : Yes NAS Identifier : Yes Sub-Profile : Yes SLA-Profile : Yes User-Name : Yes Calling Station Id : Yes (mac) Called Station Id : No NAS Port Prefix : HSI Use Std-Acct-Attr : Yes NAS Port Suffix : None Tunnel Server Attr : No NAS-port : Yes NAS-Port-Type : No NAS-Port bits spec : *12i*3s*2m*6p NAT-Port-Range : No MAC Address : No Acct-delay-time : No Acc-authentic : No IPv6-Address : No Framed-Interface-Id: No Delegated-IPv6-Prefix: No Framed-IPv6-Prefix : No ------------------------------------------------------------------------------Radius Servers ------------------------------------------------------------------------------Router : Base Source Address : 61.148.144.1* Access Algorithm : Direct Retry :3 Timeout :3 ------------------------------------------------------------------------------Index IP Address Port Oper State ------------------------------------------------------------------------------All Rights Reserved ? Alcatel-Lucent 2010 1 61.148.150.121 2646 Up ===============================================================================

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查看DHCP状态
show router dhcp servers 返回所有的本地dhcp服务器。 show router dhcp local-dhcp-server server-1 summary show router dhcp local-dhcp-server server-1 leases show router dhcp Failover Admin State : outOfService local-dhcp-server server-1 leases 192.168.42.22 detail
Failover Oper State : shutdown Administrative MCLT : 0h10m0s Operational MCLT : 0h10m0s ------------------------------------------------------------------------------Pool name : ngn ------------------------------------------------------------------------------Subnet Free Stable Declined Offered Rem-pend ------------------------------------------------------------------------------10.241.100.0/22 1022 0 0 0 0 Totals for pool 1022 0 0 0 0 ------------------------------------------------------------------------------Totals for server 1022 0 0 0 0 show router 1 dhcp local-dhcp-server "ngn" summary =============================================================================== DHCP server ngn router 1 =============================================================================== Admin State : inService Operational State : inService Persistency State : shutdown User Data Base : N/A Use gateway IP address : disabled Use pool from client : enabled Send force-renewals : disabled

------------------------------------------------------------------------------Associations Admin ------------------------------------------------------------------------------loopback Up ===============================================================================
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如何debug

生成log,将debug-trace输出到log/session中 log-id 50 from debug-trace to session exit

打开相应的debug模块 show debug debug radius detail exit

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debug
Debug radius detail 查bras和radius之间报文交换信息

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Debug [cont.1]
Debug PPPoE 查bras和PPPoE终端之间PPPoE报文交换信息 debug service id xxxx pppoe packet mode egr-ingr-and-dropped detail level medium discovery ppp lcp pap chap ipcp dhcp-client exit sap x/x/x:x.x exit exit

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Debug [cont.2]
Debug DHCP 查bras和DHCP之间报文交换信息 debug router ip dhcp detail-level medium mode egr-ingr-and-dropped exit exit exit

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Mirror镜像
生成mirror destination的服务 configure mirror mirror-dest 200 create 并指定镜像端口sap Sap 1/1/20 Debug被镜像的端口/subscriber
debug mirror-source 200 sap 1/1/3:214.33 egress ingress subscriber "test" ingress egress no shutdown exit exit config>mirror>mirror-dest# info ---------------------------------------------sap 1/1/20 create exit no shutdown ----------------------------------------------

在dest端口接上抓包PC,并开启抓包软件

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Filter log
1. config>filter# 下,创建一个filter log 2.创建一个ip-filter
config>filter# info ---------------------------------------------log 102 create exit ip-filter 102 create default-action forward description “for test" entry 10 create match protocol * exit log 102 action forward exit interface “bras" create address 221.178.227.5/30 sap lag-9:1010.1001 create ingress filter ip 102 exit egress filter ip 102 exit exit show filter log 102
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3.应用到sap的ingres和egress下

4.然后查看log
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典型问题的处理

拨不上号 1.查看log 99 2.Debug pppoe报文

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Log 99例子

Password wrong.
1 2008/02/29 14:37:46.43 UTC WARNING: PPPOE #2001 Base PPPoE session failure "PPPoE session failure on SAP 1/1/7 in service 998 – [00:00:00:00:00:01,1] PPP problem: peer has failed to authenticate himself"

Not enough sessions on groupinterface
10 2008/02/29 17:03:07.66 UTC WARNING: PPPOE #2001 Base PPPoE session failure "PPPoE session failure on SAP 1/1/7 in service 998 – Reached the interface session limit (1)" configure service ies 998 . . . group-interface "isam-1" pppoe session-limit [1..32767] exit exit

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Not enough sessions on SAP from group-interface
1 2008/02/29 17:15:06.18 UTC WARNING: PPPOE #2001 Base PPPoE session failure "PPPoE session failure on SAP 1/1/7 in service 998 - Reached the per-SAP session limit (1)" configure service ies 998 . . . group-interface "isam-1" pppoe sap-session-limit [1..32767] exit exit

multi-sub-sap limit reached

1 2008/02/29 17:50:17.33 UTC WARNING: PPPOE #2001 Base PPPoE session failure "PPPoE session failure on SAP 1/1/7 in service 998 - Number of subscribers exceeds the configured multi-sub-sap limit (1)" configure service ies 998 . . . group-interface "isam-1" sap 1/1/7 sub-sla-mgmt multi-sub-sap [1..32767] exit exit

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典型问题的处理(cnt)
# show service id 100 pppoe session ip-address 10.162.20.174 statistics =============================================================================== PPPoE sessions for svc-id 100 =============================================================================== Sap Id Mac Address Sid Up Time Type IP/L2TP-Id/Interface-Id ------------------------------------------------------------------------------2/1/6:21.2761 00:1f:a3:64:cb:1e 1 0d 00:12:25 Local 10.162.20.174 Packet Type Received Transmitted ------------------------------------------------------------------------------LCP Configure-Request 1 2 LCP Configure-Ack 1 1 LCP Configure-Nak 0 0 LCP Configure-Reject 0 0 LCP Terminate-Request 0 0 LCP Terminate-Ack 0 0 LCP Code-Reject 0 0 LCP Echo-Request 25 25 LCP Echo-Reply 24 25 LCP Protocol-Reject 0 0 LCP Discard-Request 0 0 ------------------------------------------------------------------------------PAP Authenticate-Request 1 PAP Authenticate-Ack 1 PAP Authenticate-Nak 0 ------------------------------------------------------------------------------CHAP Challenge 0 CHAP Response 0 CHAP Success 0 CHAP Failure 0 ------------------------------------------------------------------------------IPCP Configure-Request 2 1 IPCP Configure-Ack 1 1 IPCP Configure-Nak Rights Reserved ? Alcatel-Lucent 2010 0 1 All IPCP Configure-Reject 0 0 IPCP Terminate-Request 0 0 IPCP Terminate-Ack 0 0

容易掉线 1.查看log 99 2.查看pppoe统计

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另外一个例子
*A:B4-S-GDST-JS7750# show service id 11 pppoe session sap 1/1/5:1705.2252 statistics =============================================================================== PPPoE sessions for svc-id 11 =============================================================================== Sap Id Mac Address Sid Up Time Type IP/L2TP-Id/Interface-Id ------------------------------------------------------------------------------[1/1/5:1705.2252] 00:27:19:62:2a:23 1 0d 05:03:56 Local 27.41.243.33 Packet Type Received Transmitted ------------------------------------------------------------------------------LCP Configure-Request 1 1 LCP Configure-Ack 1 1 LCP Configure-Nak 0 0 LCP Configure-Reject 0 0 LCP Terminate-Request 0 0 LCP Terminate-Ack 0 0 LCP Code-Reject 0 0 LCP Echo-Request 0 1659 LCP Echo-Reply 1653 0 LCP Protocol-Reject 0 0 LCP Discard-Request 0 0 ------------------------------------------------------------------------------PAP Authenticate-Request 1 PAP Authenticate-Ack 1 PAP Authenticate-Nak 0 ------------------------------------------------------------------------------CHAP Challenge 0 CHAP Response 0 CHAP Success 0 CHAP Failure 0 ------------------------------------------------------------------------------IPCP Configure-Request 2 2 IPCP Configure-Ack 2 1 IPCP Configure-Nak 0 1 All IPCP Configure-Reject Rights Reserved ? Alcatel-Lucent 2010 0 0 IPCP Terminate-Request 0 0 IPCP Terminate-Ack 0 0

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Pppoe keepalive

在pppoe-policy中配置/修改
*A:pe2.lab#configure subscriber-mgmt pppoe-policy default description "Default PPPoE policy" no disable-cookies keepalive 30 hold-up-multiplier 3 [10s..300s] [1..5] no pado-delay [1s..3s] no ppp-mtu [512..9212] max-sessions-per-mac 1 [1..63] no reply-on-padt ppp-options exit

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路由问题
用户上线后,不能上网 1.查看路由 2.查看用户是否有IP地址及DNS 3.带source地址进行Ping测试

1. 2. 3. 4.

show router route-table Show router xxx route-table tools dump pppoe sap xxx Ping x.x.x.x source y.y.y.y

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信息收集
Log文件 Log 99,100 syslog Show 命令结果 TS文件(两份,间隔15分钟以上)
admin tech-support cf3:\sr-20100623-1.tech Processing CPM... Second Pass Processing CPM... Processing CPM Cpu 2... Processing CPM in Slot A... Processing CPM in Slot A... Cpu 2 Processing IOM in Slot 1... Processing MDA in 1/1... Processing MDA in 1/2... Done...

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4 Radius相关配置

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AAA是认证(Authentication),授权(Authorization),计费 (Accounting)的缩写。国内运营商的AAA服务器与BAS之间通常采 用RADIUS协议,RADIUS ( Remote Authentication Dial In User Service 远程认证拨号用户服务 )是一种在网络接入设备和认证服务 器之间承载认证授权计费和配置信息的协议, RADIUS 协议是在认证/授权/计费方面应用最为广泛的协议之一。 RADIUS 协议承载于UDP 之上,官方指定端口号为认证授权端口1812, 计费端口1813。 RADIUS 协议在RFC2865 RFC2866 中定义。

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Radius策略配置
Authentication 策略
Authentication policy:认证策略,同时定义与radius server通讯参数 在group-interface下调用, 在msap下调用 配置模板 #-------------------------------------------------- echo "Subscriber-mgmt Configuration" #-------------------------------------------------subscriber-mgmt authentication-policy "knock-door" create ;创建radius 认证策略,名称为knock-door description "radius-policy" accept-authorization-change ;接受radius发送的COA radius-authentication-server ;定义radius server source-address 218.206.133.19 ;定义与radius通讯的源地址 server 2 address 211.138.200.18 secret “xxxx” port 1645 ;指定radius地址,端口,通讯密匙 exit access-algorithm direct/round-robin ;多个radius server的情况下,BAS与radius通信方式为固定/轮询 router xxxx ;指定BRAS通过VPRN xxxx与radius通讯,xxx为service id,默认通过base路由 pppoe-access-method pap-chap ;定义PPPOE接入方式为pap-chap,即终端用户通过用户名/密码进行认证 include-radius-attribute ;定义BAS发送认证报文携带的属性 circuit-id remote-id nas-port-id nas-identifier pppoe-service-name access-loop-options exit exit
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Accounting 策略

subscriber-mgmt radius-accounting-policy "Acc-Policy-1" create Radius accounting policy:计费策略,同时定义与radius accounting ;创建计费策略,名为Acc-Policy-1 参数 update-interval 10 ;定义更新时间为10分钟 在sub-profile下调用 include-radius-attribute ;指定accounting报文携带的属性 配置模板: framed-ip-addr framed-ip-netmask subscriber-id circuit-id remote-id nas-port-id nas-identifier sub-profile sla-profile exit use-std-acct-attributes ;使用标准属性上送计费信息 radius-accounting-server ;定义accounting服务器 source-address 218.206.133.19 ;定义与radius通讯的源地址 server 2 address 211.138.200.18 secret xxxx port 1646 ;指定radius地址,端口,通讯密匙 access-algorithm direct/round-robin ;多个radius server的情况下,BAS与radius通信方式为固定/轮询 router xxxx ;指定BRAS通过VPRN xxxx与radius通讯,xxxx为service id,默认为base路由 exit exit
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server通讯

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Module Summary

日常维护 硬件故障 BRAS相关故障 Troubleshooting介绍

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www.alcatel-lucent.com Thanks!

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End of Module BRAS维护和排障

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