HuaWei ❀ 配置靜態BFD檢測靜態LSP

配置靜態BFD檢測靜態LSP

如下圖所示，PE1和PE2之間有兩條靜態LSP，LSP 1通過P1，LSP 2通過P2，接口感知故障，花費時間較長，要求對靜態LSP 1進行連通性檢測，當靜態LSP 1出現故障時，PE 1能夠在500ms之內收到通告，轉換爲LSP 2；

配置接口IP地址：

[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]ip address 12.1.1.1 24

配置OSPF協議：

[r1]ospf 100
[r1-ospf-100]area 0
[r1-ospf-100-area-0.0.0.0]network 1.1.1.1 0.0.0.0 
[r1-ospf-100-area-0.0.0.0]network 12.1.1.0 0.0.0.255
[r1-ospf-100-area-0.0.0.0]network 14.1.1.0 0.0.0.255

配置節點使用MPLS功能：

[r1]mpls lsr-id 1.1.1.1
[r1]mpls

配置接口使用MPLS功能：

[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]mpls 
[r1]int g0/0/1
[r1-GigabitEthernet0/0/1]mpls 

配置靜態LSP 1與LSP 2：

[r1]static-lsp ingress lsp1 destination 3.3.3.3 32 nexthop 12.1.1.2 out-label 20
[r2]static-lsp transit lsp1 incoming-interface g0/0/0 in-label 20 nexthop 23.1.1.2 out-label 40
[r3]static-lsp egress lsp1 incoming-interface g0/0/1 in-label 40

[r1]static-lsp ingress lsp2 destination 3.3.3.3 32 nexthop 14.1.1.2 out-label 30
[r4]static-lsp transit lsp2 incoming-interface g0/0/1 in-label 30 nexthop 34.1.1.1 out-label 60
[r3]static-lsp egress lsp2 incoming-interface g0/0/0 in-label 60

配置BFD檢測靜態LSP 1：

[r1]bfd
[r1-bfd]quit
[r1]bfd peltope2 bind static-lsp lsp1
[r1-bfd-lsp-session-peltope2]discriminator local 1
[r1-bfd-lsp-session-peltope2]discriminator remote 2
[r1-bfd-lsp-session-peltope2]min-rx-interval 100
[r1-bfd-lsp-session-peltope2]min-tx-interval 100
[r1-bfd-lsp-session-peltope2]process-pst 
[r1-bfd-lsp-session-peltope2]commit 

[r3]bfd
[r3-bfd]quit
[r3]bfd pe2tope1 bind peer-ip 1.1.1.1
[r3-bfd-session-pe2tope1]discriminator local 2
[r3-bfd-session-pe2tope1]discriminator remote 1
[r3-bfd-session-pe2tope1]min-rx-interval 100
[r3-bfd-session-pe2tope1]min-tx-interval 100
[r3-bfd-session-pe2tope1]commit 

查看配置結果：

[r1]display bfd session all verbose
--------------------------------------------------------------------------------
Session MIndex : 512          State : Up           Name : peltope2            
--------------------------------------------------------------------------------
  Local Discriminator    : 1                Remote Discriminator   : 2         
  Session Detect Mode    : Asynchronous Mode Without Echo Function             
  BFD Bind Type          : STATIC_LSP                                          
  Bind Session Type      : Static                                              
  Bind Peer IP Address   : 3.3.3.3                                             
  NextHop Ip Address     : 12.1.1.2                                            
  Bind Interface         : -                                                   
  Static LSP name        : lsp1             LSP Token              : 0x1       
  FSM Board Id           : 0                TOS-EXP                : 7         
  Min Tx Interval (ms)   : 100              Min Rx Interval (ms)   : 100       
  Actual Tx Interval (ms): 100              Actual Rx Interval (ms): 100       
  Local Detect Multi     : 3                Detect Interval (ms)   : 300       
  Echo Passive           : Disable          Acl Number             : -         
  Destination Port       : 3784             TTL                    : 1         
  Proc Interface Status  : Disable          Process PST            : Enable    
  WTR Interval (ms)      : -                                                   
  Active Multi           : 3                                                   
  Last Local Diagnostic  : No Diagnostic                                       
  Bind Application       : LSPM | L2VPN | OAM_MANAGER 
  Session TX TmrID       : -                Session Detect TmrID   : -         
  Session Init TmrID     : -                Session WTR TmrID      : -         
  Session Echo Tx TmrID  : -                                                   
  PDT Index              : FSM-0 | RCV-0 | IF-0 | TOKEN-1                      
  Session Description    : -                                                   
--------------------------------------------------------------------------------
                                          
     Total UP/DOWN Session Number : 1/0

驗證BFD會話檢測LSP 1的配置結果：

[r2]int g0/0/1
[r2-GigabitEthernet0/0/1]shutdown 
[r1]
Jun 18 2020 13:24:10-08:00 r1 %%01BFD/4/STACHG_TODWN(l)[13]:BFD session changed to Down. (SlotNumber=0, Discriminator=16777216, Diagnostic=DetectDown, Applications=LSPM | L2VPN | OAM_MANAGER, ProcessPST=True, BindInterfaceName=None, InterfacePhysicalState=None, InterfaceProtocolState=None)