Lab 4.1 Định tuyến IS-IS cơ bản

Discussion in 'Lab' started by root, Jul 21, 2014.

  1. root

    root Well-Known Member

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    I. Sơ đồ
    1. Mô hình

    [​IMG]

    2. Yêu cầu
    - Thực hiện thiết lập các thiết bị theo mô hình
    - Triển khai định tuyến IS-IS để các lớp mạng có thể thấy nhau

    II. Triển khai
    1. Cấu hình IP
    - Trên R1
    [TABLE="class: outer_border, width: 500"]

    R1(config)#int f0/0
    R1(config-if)#ip address 12.12.12.1 255.255.255.0
    R1(config-if)#no shutdown

    R1(config-if)#int loopback0
    R1(config-if)#ip address 1.1.1.1 255.255.255.0
    [/TABLE]

    - Trên R2

    [TABLE="class: outer_border, width: 500"]

    R2(config)#int f0/0
    R2(config-if)#ip address 12.12.12.2 255.255.255.0
    R2(config-if)#no shutdown

    R2(config-if)#int f0/1
    R2(config-if)#ip address 23.23.23.2 255.255.255.0
    R2(config-if)#no shutdown

    R2(config-if)#int loopback0
    R2(config-if)#ip address 2.2.2.2 255.255.255.0
    [/TABLE]

    - Trên R3

    [TABLE="class: outer_border, width: 500"]

    R3(config)#int f0/1
    R3(config-if)#ip address 23.23.23.3 255.255.255.0
    R3(config-if)#no shutdown

    R3(config-if)#int loopback0
    R3(config-if)#ip address 3.3.3.3 255.255.255.0
    [/TABLE]

    2. Cấu hình định tuyến IS-IS
    - Trên R1: Enable IS-IS trên router và interface

    [TABLE="class: outer_border, width: 500"]

    R1(config)#router isis
    R1(config-router)#net 49.0001.1111.1111.1111.00

    R1(config)#int f0/0
    R1(config-if)#ip router isis

    R1(config-if)#int loopback0
    R1(config-if)#ip router isis
    [/TABLE]

    - Trên R2: Tương tự như trên R1

    [TABLE="class: outer_border, width: 500"]

    R2(config)#router isis
    R2(config-router)#net 49.0001.2222.2222.2222.00

    R2(config)#int f0/0
    R2(config-if)#ip router isis
    R2(config-if)#no shutdown


    R2(config-if)#int f0/1
    R2(config-if)#ip router isis
    R2(config-if)#no shutdown

    R2(config-if)#int loopback0
    R2(config-if)#ip router isis
    [/TABLE]

    - Trên R3

    [TABLE="class: outer_border, width: 500"]

    R3(config)#router isis
    R3(config-router)#net 49.0002.3333.3333.3333.00

    R3(config)#int f0/1
    R3(config-if)#ip router isis
    R3(config-if)#no shutdown

    R3(config-if)#int loopback0
    R3(config-if)#ip router isis
    [/TABLE]

    3. Kiểm tra
    - Kiểm tra bảng định tuyến

    [TABLE="class: outer_border, width: 800"]

    R1#sh ip route
    Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
    D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
    N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
    E1 - OSPF external type 1, E2 - OSPF external type 2
    i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
    ia - IS-IS inter area, * - candidate default, U - per-user static route
    o - ODR, P - periodic downloaded static route


    Gateway of last resort is not set


    1.0.0.0/24 is subnetted, 1 subnets
    C 1.1.1.0 is directly connected, Loopback0
    2.0.0.0/24 is subnetted, 1 subnets
    i L1 2.2.2.0 [115/20] via 12.12.12.2, FastEthernet0/0
    3.0.0.0/24 is subnetted, 1 subnets
    i L2 3.3.3.0 [115/30] via 12.12.12.2, FastEthernet0/0
    23.0.0.0/24 is subnetted, 1 subnets
    i L1 23.23.23.0 [115/20] via 12.12.12.2, FastEthernet0/0
    12.0.0.0/24 is subnetted, 1 subnets
    C 12.12.12.0 is directly connected, FastEthernet0/0

    ------------------------------------------------------------------------------
    R2#sh ip route | begin set
    Gateway of last resort is not set


    1.0.0.0/24 is subnetted, 1 subnets
    i L1 1.1.1.0 [115/20] via 12.12.12.1, FastEthernet0/0
    2.0.0.0/24 is subnetted, 1 subnets
    C 2.2.2.0 is directly connected, Loopback0
    3.0.0.0/24 is subnetted, 1 subnets
    i L2 3.3.3.0 [115/20] via 23.23.23.3, FastEthernet0/1
    23.0.0.0/24 is subnetted, 1 subnets
    C 23.23.23.0 is directly connected, FastEthernet0/1
    12.0.0.0/24 is subnetted, 1 subnets
    C 12.12.12.0 is directly connected, FastEthernet0/0


    -----------------------------------------------------------------------
    R3#sh ip route | begin set
    Gateway of last resort is not set


    1.0.0.0/24 is subnetted, 1 subnets
    i L2 1.1.1.0 [115/30] via 23.23.23.2, FastEthernet0/1
    2.0.0.0/24 is subnetted, 1 subnets
    i L2 2.2.2.0 [115/20] via 23.23.23.2, FastEthernet0/1
    3.0.0.0/24 is subnetted, 1 subnets
    C 3.3.3.0 is directly connected, Loopback0
    23.0.0.0/24 is subnetted, 1 subnets
    C 23.23.23.0 is directly connected, FastEthernet0/1
    12.0.0.0/24 is subnetted, 1 subnets
    i L2 12.12.12.0 [115/20] via 23.23.23.2, FastEthernet0/1


    [/TABLE]

    - Kiểm tra thông tin CLSN trên Router
    [TABLE="class: outer_border, width: 500"]

    R1#sh clns


    Global CLNS Information:
    2 Interfaces Enabled for CLNS
    NET: 49.0001.1111.1111.1111.00
    Configuration Timer: 60, Default Holding Timer: 300, Packet Lifetime 64
    ERPDU's requested on locally generated packets
    Running IS-IS in IP-only mode (CLNS forwarding not allowed)
    [/TABLE]
    - Kiểm tra thông tin các process IS-IS trên Router
    [TABLE="class: outer_border, width: 500"]

    R1#sh clns protocol


    IS-IS Router: <Null Tag>
    System Id: 1111.1111.1111.00 IS-Type: level-1-2
    Manual area address(es):
    49.0001
    Routing for area address(es):
    49.0001
    Interfaces supported by IS-IS:
    FastEthernet0/0 - IP
    Loopback0 - IP
    Redistribute:
    static (on by default)
    Distance for L2 CLNS routes: 110
    RRR level: none
    Generate narrow metrics: level-1-2
    Accept narrow metrics: level-1-2
    Generate wide metrics: none
    Accept wide metrics: none
    [/TABLE]

    - Hiển thị các neighbor

    [TABLE="class: outer_border, width: 700"]

    R2#sh clns neighbors


    System Id Interface SNPA State Holdtime Type Protocol
    R1 Fa0/0 c200.0f0c.0000 Up 26 L1L2 IS-IS
    R3 Fa0/1 c202.150c.0001 Up 8 L2 IS-IS

    ------------------
    R2#sh clns neighbors detail


    System Id Interface SNPA State Holdtime Type Protocol
    R1 Fa0/0 c200.0f0c.0000 Up 27 L1L2 IS-IS
    Area Address(es): 49.0001
    IP Address(es): 12.12.12.1*
    Uptime: 00:21:08
    NSF capable
    R3 Fa0/1 c202.150c.0001 Up 7 L2 IS-IS
    Area Address(es): 49.0002
    IP Address(es): 23.23.23.3*
    Uptime: 00:21:07
    NSF capable

    [/TABLE]

    - CLNS ko được thực hiện định tuyến nên nó chỉ hiện thị các kết nối connected

    [TABLE="class: outer_border, width: 500"]

    R1#sh clns route
    Codes: C - connected, S - static, d - DecnetIV
    I - ISO-IGRP, i - IS-IS, e - ES-IS
    B - BGP, b - eBGP-neighbor


    C 49.0001.1111.1111.1111.00 [1/0], Local IS-IS NET
    C 49.0001 [2/0], Local IS-IS Area
    [/TABLE]

    - Hiển thị nội dung của IS-IS LSDB

    Code:
    R1#sh isis database
    
    
    IS-IS Level-1 Link State Database:
    LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime      ATT/P/OL
    R1.00-00            * 0x00000005   0xDD2F        1119              1/0/0
    R2.00-00              0x00000005   0x269B        1086              1/0/0
    R2.02-00              0x00000002   0x1D37        543               0/0/0
    IS-IS Level-2 Link State Database:
    LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime      ATT/P/OL
    R1.00-00            * 0x00000005   0xD7AE        1161              0/0/0
    R2.00-00              0x00000005   0xC593        1079              0/0/0
    R2.02-00              0x00000002   0xAC30        562               0/0/0
    R3.00-00              0x00000003   0x0BA6        466               0/0/0
    R3.02-00              0x00000002   0x1396        528               0/0/0
    
    - Hiển thị đường đi tốt nhất trong IS-IS

    Code:
    R1#sh isis topology
    
    
    IS-IS paths to level-1 routers
    System Id            Metric     Next-Hop             Interface   SNPA
    R1                   --
    R2                   10         R2                   Fa0/0       c201.0f0c.0
    
    
    IS-IS paths to level-2 routers
    System Id            Metric     Next-Hop             Interface   SNPA
    R1                   --
    R2                   10         R2                   Fa0/0       c201.0f0c.0
    R3                   20         R2                   Fa0/0       c201.0f0c.0
    
    
    
    - Hiển thị các IS-IS neighbor

    Code:
    R1#sh isis neighbors
    
    
    System Id      Type Interface   IP Address      State Holdtime Circuit Id
    R2             L1   Fa0/0       12.12.12.2      UP    9        R2.02
    R2             L2   Fa0/0       12.12.12.2      UP    8        R2.02
    R1#sh isis neighbors deta
    R1#sh isis neighbors detail
    
    
    System Id      Type Interface   IP Address      State Holdtime Circuit Id
    
    =================================================================
    R2             L1   Fa0/0       12.12.12.2      UP    7        R2.02
      Area Address(es): 49.0001
      SNPA: c201.0f0c.0000
      State Changed: 00:29:46
      LAN Priority: 64
      Format: Phase V
      Interface name: FastEthernet0/0
    R2             L2   Fa0/0       12.12.12.2      UP    9        R2.02
      Area Address(es): 49.0001
      SNPA: c201.0f0c.0000
      State Changed: 00:29:46
      LAN Priority: 64
      Format: Phase V
      Interface name: FastEthernet0/0
    
    
    
    - Hiện thị bộ tính toán SPF đầy đủ các đường đi cho IS-IS

    Code:
    R1#sh isis spf-log
    
    
       level 1 SPF log
      When   Duration  Nodes  Count    First trigger LSP   Triggers
    00:31:07       8      3      8             R1.00-00  PERIODIC ATTACHFLAG NEWADJ NEWLSP LSPHEADER TLVCONTENT
    00:30:57       4      3      1             R1.00-00  LSPHEADER
    00:16:09       8      3      1                       PERIODIC
    00:01:09       8      3      1                       PERIODIC
    
    
       level 2 SPF log
      When   Duration  Nodes  Count    First trigger LSP   Triggers
    00:31:09      16      5      8             R1.00-00  PERIODIC NEWADJ NEWLSP TLVCONTENT
    00:16:11       8      5      1                       PERIODIC
    00:01:11       8      5      1                       PERIODIC
    
    
    
     

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