S9500交换机MPLS L3 VPN 混插业务不正常问题处理方法

S9500交换机MPLS L3 VPN 混插业务不正常问题处理方法

 

一、故障处理流程

 

图一、混插业务不正常故障处理流程

二、故障处理步骤

1）步骤1

    通过display device命令，确定当前系统中存在MPLS VPN增强型单板。如果不存在增强型单板，无法支持MPLS混插。

<S9500>display device

Slot No.   Brd Type        Brd Status   Subslot Num    Sft Ver

 0         NONE            Absent       0              None

 1         LSB2FT48C0      Normal       1              S9500-VRP310-F1271

 2         NONE            Absent       0              None

 3         NONE            Absent       0              None

 4         NONE            Absent       0              None

 5         NONE            Absent       0              None

 6         LSB1SRPB        Master       0              S9500-VRP310-F1271

 7         NONE            Absent       0              None

 8         NONE            Absent       0              None

 9         NONE            Absent       0              None

 10        NONE            Absent       0              None

 11        NONE            Absent       0              None

 12        NONE            Absent       0              None

 13        LSB1FT48B0      Normal       1              S9500-VRP310-F1271

2）步骤2

    检查VPN相关配置信息，确定VLAN接口的VPN配置是否正确。确定VPN相关配置正确，请转步骤3。

3）步骤3

    确定入端口的配置信息和状态，是否允许该VLAN通过，端口是否配置dot1x等协议，端口STP状态是否正确，是否配置ACL过滤规则。确定端口配置正确，请转步骤4。

4）步骤4

    使用命令display current-configuration interface确定入端口是否正确配置重定向规则，把需要进行MPLS转发的报文重定向到增强型单板的端口，重点关注目的端口和目的VLAN是否正确。

[S9500]display current-configuration interface e13/1/3

#

interface Ethernet13/1/3

 port access vlan 400

 traffic-redirect inbound ip-group 3000 rule 0 system-index 1 interface Ethernet

1/1/1 400 l3-vpn

#

return

确定目的端口状态是否UP，端口STP等状态是否正确。

[S9500]display interface Ethernet 1/1/1

 Ethernet1/1/1 current state : UP

 IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 00e0-fc4f-017e

 The Maximum Transmit Unit is 1500

 Media type is twisted pair, loopback set internal

 Port hardware type is 100_BASE_TX

 100Mbps-speed mode, full-duplex mode

 Link speed type is autonegotiation, link duplex type is autonegotiation

 Flow-control is not enabled

 The Maximum Frame Length is 1552

 Broadcast MAX-ratio: 50%

 Allow jumbo frame to pass

 MixInsert-Port VPN status:l3 vpn access loopback port

 PVID: 1

 Mdi type: auto

 Link-status hold interval:3 Sec

 Port link-type: trunk

  VLAN passing  : 400

  VLAN permitted: 400

  Trunk port encapsulation: IEEE 802.1q

 Last 300 seconds input:  0 packets/sec 16 bits/sec     0%

 Last 300 seconds output:  0 packets/sec 16 bits/sec     0%

 Input(total):  12 packets, 990 bytes

          - broadcasts, - multicasts

 Input(normal):  12 packets, 990 bytes

          0 broadcasts, 12 multicasts

 Input:  0 input errors, 0 runts, 0 giants,  0 throttles, 0 CRC

          0 frame,  0 overruns, - aborts, 0 ignored, - parity errors

 Output(total): 12 packets, 990 bytes

          - broadcasts, - multicasts, 0 pauses

 Output(normal): 12 packets, 990 bytes

          0 broadcasts, 12 multicasts, 0 pauses

 Output: 0 output errors,  - underruns, - buffer failures

          0 aborts, 0 deferred, - collisions, 0 late collisions

          - lost carrier, - no carrier

 Receive Packet Peak Value Info: 664 bytes, happened at 16:30:27 3-18-2006

 Transmit Packet Peak Value Info: 664 bytes, happened at 16:30:27 3-18-2006

5）步骤5

    上述步骤无法定位问题，请联系800进一步处理。