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27-1 BFD联动实验（OSPF/Static Router/VRRP）

时间：2023-12-08 15:57:04浏览次数：33  
标签：27 BFD 0.0 GigabitEthernet0 12.1 192.168 VRRP ip interface

拓扑

要求：
1.接入层和汇聚层配置MSTP+VRRP实现高可用性
2.汇聚层和核心层配置BFD高可用性
3.汇聚层和核心层之间允许OSPF，OSPF配置BFD实现高可用性
4.核心层到LSP配置静态路由，要求配置BFD实现高可用性

配置

基础配置（VLAN+IP）

PC1配置，PC2参考PC1
image

Access配置

#
vlan batch 10 20
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 10 20
#
interface GigabitEthernet0/0/2
 port link-type access
 port default vlan 10
#
interface GigabitEthernet0/0/3
 port link-type trunk
 port trunk allow-pass vlan 10 20
#
interface GigabitEthernet0/0/4
 port link-type access
 port default vlan 20

converge1

#
vlan batch 10 20
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 10 20
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 10 20
#
interface GigabitEthernet0/0/3
 port link-type access
#
interface Vlanif1
 ip address 12.1.1.2 255.255.255.252
#
interface Vlanif10
 ip address 192.168.1.252 255.255.255.0
#
interface Vlanif20
 ip address 192.168.2.252 255.255.255.0

converge2

#
vlan batch 10 20
#
interface GigabitEthernet0/0/1
 port link-type access
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 10 20
#
interface GigabitEthernet0/0/3
 port link-type trunk
 port trunk allow-pass vlan 10 20
#
interface Vlanif1
 ip address 12.1.2.2 255.255.255.252
#
interface Vlanif10
 ip address 192.168.1.253 255.255.255.0
#
interface Vlanif20
 ip address 192.168.2.253 255.255.255.0

core

#
interface GigabitEthernet0/0/0
 ip address 12.1.1.1 255.255.255.252 
#
interface GigabitEthernet0/0/1
 ip address 12.1.2.1 255.255.255.252 
#
interface GigabitEthernet0/0/2
 ip address 200.10.10.2 255.255.255.252 
#
interface GigabitEthernet4/0/0
 ip address 200.10.20.1 255.255.255.252

LSP

#
interface GigabitEthernet0/0/0
 ip address 200.10.10.1 255.255.255.252 
#
interface LoopBack0
 ip address 8.8.8.8 255.255.255.255 
#
interface GigabitEthernet0/0/1
 ip address 200.10.20.1 255.255.255.252

MSTP配置

converge1

#
stp region-configuration
 region-name gls.com
 revision-level 1
 instance 1 vlan 10
 instance 2 vlan 20
 active region-configuration
#
stp instance 1 priority 0
stp instance 2 priority 4096

converge2

#
stp region-configuration
 region-name gls.com
 revision-level 1
 instance 1 vlan 10
 instance 2 vlan 20
 active region-configuration
#
stp instance 1 priority 4096
stp instance 2 priority 0

Access

#
stp region-configuration
 region-name gls.com
 revision-level 1
 instance 1 vlan 10
 instance 2 vlan 20
 active region-configuration
#

验证配置

[Access]dis stp instance 1 b
 MSTID  Port                        Role  STP State     Protection
   1    GigabitEthernet0/0/1        ROOT  FORWARDING      NONE
   1    GigabitEthernet0/0/2        DESI  FORWARDING      NONE
   1    GigabitEthernet0/0/3        ALTE  DISCARDING      NONE
[Access]dis stp instance 2 b
 MSTID  Port                        Role  STP State     Protection
   2    GigabitEthernet0/0/1        ALTE  DISCARDING      NONE
   2    GigabitEthernet0/0/3        ROOT  FORWARDING      NONE
   2    GigabitEthernet0/0/4        DESI  FORWARDING      NONE

VRRP配置

converge1

#
interface Vlanif10
 ip address 192.168.1.252 255.255.255.0
 vrrp vrid 1 virtual-ip 192.168.1.254
 vrrp vrid 1 priority 150
#
interface Vlanif20
 ip address 192.168.2.252 255.255.255.0
 vrrp vrid 2 virtual-ip 192.168.2.254

converge2

#
interface Vlanif10
 ip address 192.168.1.253 255.255.255.0
 vrrp vrid 1 virtual-ip 192.168.1.254
#
interface Vlanif20
 ip address 192.168.2.253 255.255.255.0
 vrrp vrid 2 virtual-ip 192.168.2.254
 vrrp vrid 2 priority 150

验证配置

[converge1]display vrrp brief 
VRID  State        Interface                Type     Virtual IP     
----------------------------------------------------------------
1     Master       Vlanif10                 Normal   192.168.1.254  
2     Backup       Vlanif20                 Normal   192.168.2.254  
----------------------------------------------------------------
Total:2     Master:1     Backup:1     Non-active:0  
[converge2]display vrrp b
VRID  State        Interface                Type     Virtual IP     
----------------------------------------------------------------
1     Backup       Vlanif10                 Normal   192.168.1.254  
2     Master       Vlanif20                 Normal   192.168.2.254  
----------------------------------------------------------------
Total:2     Master:1     Backup:1     Non-active:0

路由配置（OSPF+静态路由）

core

#
ospf 1 router-id 1.1.1.1 
 default-route-advertise always
 area 0.0.0.0 
  network 12.1.1.0 0.0.0.3 
  network 12.1.2.0 0.0.0.3 
#
ip route-static 0.0.0.0 0.0.0.0 200.10.10.1
ip route-static 0.0.0.0 0.0.0.0 200.10.20.1 preference 70

converge1

#
ospf 1 router-id 2.2.2.2
 area 0.0.0.0
  network 12.1.1.0 0.0.0.3
  network 192.168.1.0 0.0.0.255
  network 192.168.2.0 0.0.0.255
  network 192.168.1.254 0.0.0.0
  network 192.168.2.254 0.0.0.0
#

converge2

#
ospf 1 router-id 3.3.3.3
 area 0.0.0.0
  network 12.1.2.0 0.0.0.3
  network 192.168.1.0 0.0.0.255
  network 192.168.2.0 0.0.0.255
  network 192.168.1.254 0.0.0.0
  network 192.168.2.254 0.0.0.0
#

VRRP联动BFD配置

converge1

#
bfd 1 bind peer-ip 12.1.1.1 source-ip 12.1.1.2 auto
#
interface Vlanif10
 ip address 192.168.1.252 255.255.255.0
 vrrp vrid 1 virtual-ip 192.168.1.254
 vrrp vrid 1 priority 150
 vrrp vrid 1 track bfd-session session-name 1 reduced 60

converge2

#
bfd 2 bind peer-ip 12.1.2.1 source-ip 12.1.2.2 auto
#
interface Vlanif20
 ip address 192.168.2.253 255.255.255.0
 vrrp vrid 2 virtual-ip 192.168.2.254
 vrrp vrid 2 priority 150
 vrrp vrid 2 track bfd-session session-name 1 reduced 60

core

#
bfd 1 bind peer-ip 12.1.1.2 source-ip 12.1.1.1 auto
 commit
#
bfd 2 bind peer-ip 12.1.2.2 source-ip 12.1.2.1 auto
 commit

静态路由联动BFD

core

#
bfd lsp bind peer-ip 200.10.10.1 source-ip 200.10.10.2 auto
#
ip route-static 0.0.0.0 0.0.0.0 200.10.10.1 track bfd-session lsp
ip route-static 0.0.0.0 0.0.0.0 200.10.20.1 preference 70

LSP

#
bfd lsp bind peer-ip 200.10.10.2 source-ip 200.10.10.1 auto

nat配置

#
acl name lsp 3999  
 rule 5 permit ip source 192.168.1.0 0.0.0.255 
 rule 10 permit ip source 192.168.2.0 0.0.0.255 
#
interface GigabitEthernet0/0/2
 ip address 200.10.10.2 255.255.255.252 
 nat outbound 3999
#
interface GigabitEthernet4/0/0
 ip address 200.10.20.2 255.255.255.252 
 nat outbound 3999

OSPF联动BFD

core

[core-ospf-1]bfd all-interfaces enable

converge1

[core-ospf-1]bfd all-interfaces enable

converge2

[converge2-ospf-1]bfd all-interfaces enable

配置验证
core

[core]dis bfd session all 
--------------------------------------------------------------------------------
Local Remote     PeerIpAddr      State     Type        InterfaceName            
--------------------------------------------------------------------------------

8192  8192       200.10.10.1     Up        S_AUTO_PEER       -                  
8193  8193       12.1.2.2        Up        D_IP_IF     GigabitEthernet0/0/1     
8195  8198       12.1.1.2        Up        D_IP_IF     GigabitEthernet0/0/0     
8196  8194       12.1.1.2        Up        S_AUTO_PEER       -                  
8198  8197       12.1.2.2        Up        S_AUTO_PEER       -                  
--------------------------------------------------------------------------------
     Total UP/DOWN Session Number : 5/0

converge1

[converge1]dis bfd session all 
--------------------------------------------------------------------------------
Local Remote     PeerIpAddr      State     Type        InterfaceName            
--------------------------------------------------------------------------------

8194  8196       12.1.1.1        Up        S_AUTO_PEER       -                  
8195  8194       192.168.2.253   Up        D_IP_IF     Vlanif20                 
8196  8195       192.168.1.253   Up        D_IP_IF     Vlanif10                 
8198  8195       12.1.1.1        Up        D_IP_IF     Vlanif1                  
--------------------------------------------------------------------------------
     Total UP/DOWN Session Number : 4/0

converge2

[converge2]dis bfd session all 
--------------------------------------------------------------------------------
Local Remote     PeerIpAddr      State     Type        InterfaceName            
--------------------------------------------------------------------------------

8193  8193       12.1.2.1        Up        D_IP_IF     Vlanif1                  
8194  8195       192.168.2.252   Up        D_IP_IF     Vlanif20                 
8195  8196       192.168.1.252   Up        D_IP_IF     Vlanif10                 
8197  8198       12.1.2.1        Up        S_AUTO_PEER       -                  
--------------------------------------------------------------------------------
     Total UP/DOWN Session Number : 4/0

将core的GE0/0/2接口关闭

配置验证

PC1，PC2访问公网
image
image

关闭converge1的上行链路，BFD分别通知OSPF和VRRP协议，OSPF,VRRP再进行相应操作

[converge1-GigabitEthernet0/0/3]shutdown 
[converge1-GigabitEthernet0/0/3]dis vrrp b
VRID  State        Interface                Type     Virtual IP     
----------------------------------------------------------------
1     Backup       Vlanif10                 Normal   192.168.1.254  
2     Backup       Vlanif20                 Normal   192.168.2.254  
----------------------------------------------------------------
Total:2     Master:0     Backup:2     Non-active:0     

[converge2]dis vrrp b
VRID  State        Interface                Type     Virtual IP     
----------------------------------------------------------------
1     Master       Vlanif10                 Normal   192.168.1.254  
2     Master       Vlanif20                 Normal   192.168.2.254  
----------------------------------------------------------------
Total:2     Master:2     Backup:0     Non-active:0

且CONVERGE1和core1之间的邻居也检测后断开
image

LSP的GE0/0/0端口关闭，core通过BFD检测链路故障，切换默认路由

[LSP-GigabitEthernet0/0/0]shutdown

core
image

image

标签：27,BFD,0.0,GigabitEthernet0,12.1,192.168,VRRP,ip,interface
From： https://www.cnblogs.com/Metkey/p/17884049.html

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