第8章 ISIS

8.1 基本的集成ISIS配置

图片[1]-第8章 ISIS-大赛人网
图8-1 ISIS基本配置网络拓扑

1.R1配置

[R1]isis 1
[R1]interface GigabitEthernet 0/0/0 
[R1-GigabitEthernet0/0/0]isis enable 1
[R1]interface LoopBack 0
[R1-LoopBack0]isis enable 1

2.R2配置

[R2]isis 1
[R2-isis-1]network-entity 49.0001.0000.0000.2222.00
[R2]interface GigabitEthernet 0/0/0
[R2-GigabitEthernet0/0/0]isis enable 1
[R2]interface GigabitEthernet 0/0/1
[R2-GigabitEthernet0/0/1]isis enable 1
[R2]interface LoopBack 0
[R2-LoopBack0]isis enable 1

3.R3配置

[R3]isis 1
[R3-isis-1]network-entity 49.0001.0000.0000.3333.00
[R3]interface GigabitEthernet 0/0/1
[R3-GigabitEthernet0/0/1]isis enable 1
[R3]interface LoopBack 0
[R3-LoopBack0]isis enable 1

4.查看ISIS邻居

[R2]display isis peer 
0000.0000.1111  GE0/0/0            0000.0000.2222.01 Up   29s      L1(L1L2) 64 
0000.0000.1111  GE0/0/0            0000.0000.2222.01 Up   28s      L2(L1L2) 64 
0000.0000.3333  GE0/0/1            0000.0000.3333.01 Up   9s       L1(L1L2) 64 
0000.0000.3333  GE0/0/1            0000.0000.3333.01 Up   8s       L2(L1L2) 64 

5.查看ISIS信息

[R2]display isis brief 
 ISIS Protocol Information for ISIS(1)
SystemId: 0000.0000.2222      System Level: L12   
Area-Authentication-mode: NULL
Domain-Authentication-mode: NULL
Ipv6 is not enabled
ISIS is in invalid restart status
ISIS is in protocol hot standby state: Real-Time Backup

Interface: 12.1.1.2(GE0/0/0)
Cost: L1 10        L2 10                Ipv6 Cost: L1 10   L2 10   
State: IPV4 Up                          IPV6 Down
Type: BROADCAST                         MTU: 1497      
Priority: L1 64   L2 64   
Timers:     Csnp: L1 10    L2 10    ,Retransmit: L12 5   , Hello: L1 10 L2 10  , 
Hello Multiplier: L1 3    L2 3     , LSP-Throttle Timer: L12 50  

Interface: 23.1.1.2(GE0/0/1)
Cost: L1 10        L2 10                Ipv6 Cost: L1 10   L2 10   
State: IPV4 Up                          IPV6 Down
Type: BROADCAST                         MTU: 1497      
Priority: L1 64   L2 64   
Timers:     Csnp: L1 10    L2 10    ,Retransmit: L12 5   , Hello: L1 10 L2 10  , 
Hello Multiplier: L1 3    L2 3     , LSP-Throttle Timer: L12 50  
Interface: 2.2.2.2(Loop0)

6.查看ISIS接口信息

[R2]display isis interface GigabitEthernet 0/0/0 verbose 
     Interface information for ISIS(1)
 Interface       Id      IPV4.State          IPV6.State      MTU  Type  DIS   
 GE0/0/0         001         Up                 Down         1497 L1/L2 Yes/Yes
  Circuit MT State            : Standard 
  Description                 : HUAWEI, AR Series, GigabitEthernet0/0/0 Interface
  SNPA Address                : 00e0-fcbe-1abc
  IP Address                  : 12.1.1.2
  IPV6 Link Local Address     :
  IPV6 Global Address(es)     :
  Csnp Timer Value            :  L1    10  L2    10
  Hello Timer Value           :  L1    10  L2    10
  DIS Hello Timer Value       :  L1     3  L2     3
  Hello Multiplier Value      :  L1     3  L2     3
  LSP-Throttle Timer          :  L12    50
  Cost                        :  L1    10  L2    10
  Ipv6 Cost                   :  L1    10  L2    10
  Priority                    :  L1    64  L2    64
  Retransmit Timer Value      :  L12    5
  Bandwidth-Value             :  Low 1000000000  High          0
  Static Bfd                  :  NO
  Dynamic Bfd                 :  NO
  Fast-Sense Rpr              :  NO

7.查看ISIS路由信息

[R2]display isis route 
 Route information for ISIS(1)
                         -----------------------------
                        ISIS(1) Level-1 Forwarding Table                        --------------------------------
IPV4 Destination     IntCost    ExtCost ExitInterface   NextHop         Flags
-------------------------------------------------------------------------------
12.0.0.0/8           10         NULL    GE0/0/0         Direct          D/-/L/-
23.0.0.0/8           10         NULL    GE0/0/1         Direct          D/-/L/-
3.3.3.3/32           10         NULL    GE0/0/1         23.1.1.3        A/-/L/-
2.2.2.2/32           0          NULL    Loop0           Direct          D/-/L/-
1.1.1.1/32           10         NULL    GE0/0/0         12.1.1.1        A/-/L/-
     Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut,
                               U-Up/Down Bit Set
                        ISIS(1) Level-2 Forwarding Table                        --------------------------------

IPV4 Destination     IntCost    ExtCost ExitInterface   NextHop         Flags
-------------------------------------------------------------------------------
12.0.0.0/8           10         NULL    GE0/0/0         Direct          D/-/L/-
23.0.0.0/8           10         NULL    GE0/0/1         Direct          D/-/L/-
3.3.3.3/32           10         NULL   
2.2.2.2/32           0          NULL    Loop0           Direct          D/-/L/-
1.1.1.1/32           10         NULL   
     Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut,
                               U-Up/Down Bit Set

8.查看ISIS链路状态信息

[R2]display isis lsdb 
   Database information for ISIS(1)
                        --------------------------------

                          Level-1 Link State Database

LSPID                 Seq Num      Checksum      Holdtime      Length  ATT/P/OL
-------------------------------------------------------------------------------
0000.0000.1111.00-00  0x00000005   0x936c        1125          86      0/0/0   
0000.0000.2222.00-00* 0x00000007   0xa066        545           113     0/0/0   
0000.0000.2222.01-00* 0x00000001   0x43a1        438           55      0/0/0   
0000.0000.3333.00-00  0x00000005   0x353c        568           86      0/0/0   
0000.0000.3333.01-00  0x00000001   0xfe7f        564           55      0/0/0   

Total LSP(s): 5
    *(In TLV)-Leaking Route, *(By LSPID)-Self LSP, +-Self LSP(Extended), 
           ATT-Attached, P-Partition, OL-Overload
                          Level-2 Link State Database

LSPID                 Seq Num      Checksum      Holdtime      Length  ATT/P/OL
-------------------------------------------------------------------------------
0000.0000.1111.00-00  0x00000009   0x599c        1125          122     0/0/0   
0000.0000.2222.00-00* 0x00000009   0x10b5        571           137     0/0/0   
0000.0000.2222.01-00* 0x00000001   0x43a1        438           55      0/0/0   
0000.0000.3333.00-00  0x00000007   0xc9b2        575           122     0/0/0   
0000.0000.3333.01-00  0x00000001   0xfe7f        564           55      0/0/0   

Total LSP(s): 5
    *(In TLV)-Leaking Route, *(By LSPID)-Self LSP, +-Self LSP(Extended), 
           ATT-Attached, P-Partition, OL-Overload

9.ISIS的silent配置

[R2]interface GigabitEthernet 0/0/1
[R2-GigabitEthernet0/0/1]isis silent 
[R2]display  isis  peer 
0000.0000.1111  GE0/0/0            0000.0000.2222.01 Up   23s      L1(L1L2) 64 
0000.0000.1111  GE0/0/0            0000.0000.2222.01 Up   23s      L2(L1L2) 64 
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