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路由器基本知识及应用实例(DOC格式)-第23章

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      Remote PE: 211。94。62。7; Negotiated control…word: Yes (Null)
      Ining label: 103504; Outgoing label: 100640

3。4。13 链路状态常用维护命令
故障诊断主要集中在端口的连通性。这又分为物理连通性和逻辑连通性。物理连通性主要依据端口物理状态来判断。确认手段包括调换端口、更换连线、挂表检查传输链路状态等。逻辑连通性是指端口配置的二层封装和三层地址是否与对端吻合。
另外还需要考虑路由指向的正确性。在客户端需要添加相应的缺省路由。在PE路由器上需要设置对客户端路由的反向路由,并确保将该段客户路由通过IGP或BGP对外进行宣告。PE段的路由宣告正确性可以通过检查同一个IGPdomain里的其他路由器有无从本地PE这个方向学习到正确的客户端地址。
常用指令
show interfaces so…x/x/x extensive | no…more ……产看当前POS/GE端口状态
正常状态输出范例:(端口状态正常,IP地址配置无误)
noc2004@BJ…BB1…T640》 show interfaces so…0/0/0 extensive 
Physical interface: so…0/0/0; Enabled; Physical link is Up
  Interface index: 128; SNMP ifIndex: 26; Generation: 32
  Description: Beijing2TSX1…to…Shanghai1TSX1…so…0/0/0
  Link…level type: PPP; MTU: 4474; Clocking: Internal; SDH mode; Speed: OC192; Loopback: None; FCS: 16; Payload scrambler: Enabled
  Device flags   : Present Running
  Interface flags: Point…To…Point SNMP…Traps 16384
  Link flags     : Keepalives
  Hold…times     : Up 0 ms; Down 0 ms
  Keepalive settings: Interval 10 seconds; Up…count 1; Down…count 3
  Keepalive statistics:
    Input : 370418 (last seen 00:00:03 ago)
    Output: 370258 (last sent 00:00:07 ago)
  LCP state: Opened
  NCP state: inet: Opened; inet6: Not…configured; iso: Opened; mpls: Opened
  CHAP state: Not…configured
  CoS queues     : 8 supported
  Last flapped   : 2004…07…09 02:14:46 CST (07:56:15 ago)
  Statistics last cleared: Never
  Traffic statistics:
   Input  bytes  :        4779766301429                 1960 bps
   Output bytes  :        3441927128637                 4280 bps
   Input  packets:          11469686849                    2 pps
   Output packets:           7113455133                    4 pps
  Input errors:
    Errors: 11724; Drops: 0; Framing errors: 29098070; Runts: 417; Giants: 11307; Bucket drops: 0; Policed discards: 494;
    L3 inpletes: 4593653; L2 channel errors: 0; L2 mismatch timeouts: 0; HS link CRC errors: 0; HS link FIFO overflows: 20881
  Output errors:
    Carrier transitions: 177; Errors: 0; Drops: 0; Aged packets: 0; HS link FIFO underflows: 0
  Queue counters:       Queued packets  Transmitted packets      Dropped packets
    0 ubr…class             7100943801           7100943801                    0
    1 nrtvbr…class                   0                    0                    0
    2 rtvbr…class                    0                    0                    0
    3 cbr…class               12511330             12511330                    0
  SDH   alarms   : None
  SDH   defects  : None
  SDH PHY:              Seconds        Count  State
    PLL Lock                  0            0  OK
    PHY Light                 0            0  OK
  SDH regenerator section:
    RS…BIP8               55788    983342076
    OOF                     215         6516  OK
    LOS                       9           14  OK
    LOF                       9           14  OK
    RS…ES                 56003
    RS…SES                41149
    RS…SEFS                 215
  SDH multiplex section:
    MS…BIP24              14984       997550
    MS…FEBE                 108      2355485
    MS…FERF                 772         1561  OK
    MS…AIS                41017         1057  OK
    BERR…SF                 140            4  OK
    BERR…SD                   0            0  OK
    MS…ES                 56001
    MS…SES                41120
    MS…UAS                40936
    MS…ES…FE                880
    MS…SES…FE               862
    MS…UAS…FE               721
  SDH path:
    HP…BIP8               14927       575123
    HP…FEBE                 762     43962853
    HP…LOP                  146         1103  OK
    HP…AIS                41022          612  OK
    HP…FERF                 747          159  OK
    HP…UNEQ                   2            2  OK
    HP…PLM                  204         1518  OK
    HP…ES                 56010
    HP…SES                41162
    HP…UAS                40990
    HP…ES…FE                810
    HP…SES…FE               748
    HP…UAS…FE               665
  Received SDH overhead:
    F1      : 0x00; J0      : 0x01; K1      : 0x00; K2      : 0x00
    S1      : 0x00; C2      : 0xcf; C2(cmp) : 0xcf; F2      : 0x00
    Z3      : 0x00; Z4      : 0x00; S1(cmp) : 0x00
  Transmitted SDH overhead:
    F1      : 0x00; J0      : 0x01; K1      : 0x00; K2      : 0x00
    S1      : 0x00; C2      : 0xcf; F2      : 0x00; Z3      : 0x00
    Z4      : 0x00
  Received path trace: SH…BB1…T640
    53 68 61 6e 67 68 61 69 31 54 53 58 31 2d 52 00   SH…BB1…T640。
  Transmitted path trace: BJ…BB1…T640
    42 65 69 6a 69 6e 67 32 54 53 58 31 2d 52 45 30   BJ…BB1…T640
  HDLC configuration:
    Policing bucket: Disabled
    Shaping bucket : Disabled
    Giant threshold: 4484; Runt threshold: 5
  Packet Forwarding Engine configuration:
    Destination slot: 0; PLP byte: 1 (0x00)
    CoS transmit queue             Bandwidth           Buffer Priority   Limit
                              %          bps   %        bytes
    0 ubr…class              95   9455616000  95            0      low    none
    3 cbr…class               5    497664000   5            0      low    none

  Logical interface so…0/0/0。0 (Index 67) (SNMP ifIndex 43) (Generation 21)
    Flags: Point…To…Point SNMP…Traps Encapsulation: PPP
    Traffic statistics:
     Input  bytes  :        9558469266260
     Output bytes  :        6882172890450
     Input  packets:          22932287041
     Output packets:          14214042571
    Local statistics:
     Input  bytes  :        4779766301429
     Output bytes  :        3441927128637
     Input  packets:          11469686849
     Output packets:           7113455133
    Transit statistics:
     Input  bytes  :        4778702964831                    0 bps
     Output bytes  :        3440245761813                    0 bps
     Input  packets:          11
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