2024年8月28日 16:41:57
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B. 第二阶段/拓扑练习/0828_BFD和VRRP.md
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B. 第二阶段/拓扑练习/0828_BFD和VRRP.md
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# BFD和VRRP
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### 一、PC`s IP
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### 二、VLAN
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- **SW3**
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```
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[SW3]vlan 10
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[SW3-vlan10]quit
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[SW3]port-group group-member g0/0/1 g0/0/2
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[SW3-port-group]port link-type access
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[SW3-port-group]port default vlan 10
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[SW3-port-group]quit
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[SW3]port-group group-member g0/0/3 g0/0/4
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[SW3-port-group]port link-type trunk
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[SW3-port-group]port trunk allow-pass vlan all
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```
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### 三、VRRP
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- **SW1**
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```
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[SW1]vlan 10
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[SW1-vlan10]quit
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[SW1]int g0/0/1
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[SW1-GigabitEthernet0/0/1]port link-type trunk
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[SW1-GigabitEthernet0/0/1]port trunk allow-pass vlan all
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[SW1-GigabitEthernet0/0/1]quit
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[SW1]int vlan 10
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[SW1-Vlanif10]ip add 192.168.10.254 24
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[SW1-Vlanif10]vrrp vrid 10 virtual-ip 192.168.10.254
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[SW1-Vlanif10]vrrp vrid 10 priority 130
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```
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- **SW2**
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```
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[SW2]vlan 10
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[SW2-vlan10]quit
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[SW2]int g0/0/1
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[SW2-GigabitEthernet0/0/1]port link-type trunk
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[SW2-GigabitEthernet0/0/1]port trunk allow-pass vlan all
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[SW2-GigabitEthernet0/0/1]quit
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[SW2]int vlan 10
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[SW2-Vlanif10]ip add 192.168.10.252 24
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[SW2-Vlanif10]vrrp vrid 10 virtual-ip 192.168.10.254
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```
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### 四、BFD
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- **SW1**
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```
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[SW1]bfd
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[SW1-bfd]quit
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[SW1]bfd ntd2407 bind peer-ip 192.168.10.252
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[SW1-bfd-session-ntd2407]discriminator local 1
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[SW1-bfd-session-ntd2407]discriminator remote 2
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[SW1-bfd-session-ntd2407]min-tx-interval 100
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[SW1-bfd-session-ntd2407]min-rx-interval 100
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[SW1-bfd-session-ntd2407]commit
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```
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- **SW2**
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```
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[SW2]bfd
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[SW2-bfd]quit
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[SW2]bfd ntd2407 bind peer-ip 192.168.10.251
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[SW2-bfd-session-ntd2407]discriminator local 2
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[SW2-bfd-session-ntd2407]discriminator remote 1
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[SW2-bfd-session-ntd2407]min-tx-interval 100
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[SW2-bfd-session-ntd2407]min-rx-interval 100
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[SW2-bfd-session-ntd2407]commit
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```
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### 五、BFD与VRRP联动
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- **SW2**
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```
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[SW2]int vlan 10
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[SW2-Vlanif10]vrrp vrid 10 track bfd-session 2 increased 60
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```
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*解释：*
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1. `[SW2]int vlan 10`
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- 进入交换机的VLAN接口配置模式，针对VLAN 10。
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2. `[SW2-Vlanif10]vrrp vrid 10 track bfd-session 2 increased 60`
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- 在VLAN接口10上配置VRRP虚拟路由器ID为10，并设置对BFD会话2的跟踪。
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- `track bfd-session 2`：指定跟踪的BFD会话，这里的会话ID是2。
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- `increased 60`：当BFD会话2的状态变为Down时，VRRP的优先级将增加60。这通常用于确保当主链路出现问题时，备份链路能够接管，提高其VRRP优先级，从而成为新的主路由器。
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> 这个配置的作用是，当BFD会话2检测到链路故障时，VRRP的优先级会增加，这有助于VRRP组中的备用路由器成为新的主路由器，从而保证网络的连续性和可靠性。
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>
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> 请注意，这个配置假设BFD会话2已经正确配置，并且与VRRP虚拟路由器关联的接口是VLAN 10。如果BFD会话状态变为Down，VRRP优先级的增加将触发VRRP主备切换。
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### 六、完备性测试
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- **SW1**
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```
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[SW1]dis vrrp
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Vlanif10 | Virtual Router 10
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State : Master
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Virtual IP : 192.168.10.254
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Master IP : 192.168.10.254
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PriorityRun : 255
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PriorityConfig : 130
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MasterPriority : 255
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Preempt : YES Delay Time : 0 s
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TimerRun : 1 s
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TimerConfig : 1 s
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Auth type : NONE
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Virtual MAC : 0000-5e00-010a
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Check TTL : YES
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Config type : normal-vrrp
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Create time : 2024-08-28 15:57:41 UTC-08:00
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Last change time : 2024-08-28 16:13:44 UTC-08:00
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```
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- **SW2**
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```
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[SW2]dis vrrp
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Vlanif10 | Virtual Router 10
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State : Backup
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Virtual IP : 192.168.10.254
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Master IP : 192.168.10.254
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PriorityRun : 100
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PriorityConfig : 100
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MasterPriority : 255
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Preempt : YES Delay Time : 0 s
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TimerRun : 1 s
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TimerConfig : 1 s
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Auth type : NONE
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Virtual MAC : 0000-5e00-010a
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Check TTL : YES
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Config type : normal-vrrp
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Track BFD : 2 Priority increased : 60
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BFD-session state : INITIALIZE
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Create time : 2024-08-28 15:55:20 UTC-08:00
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Last change time : 2024-08-28 16:28:55 UTC-08:00
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```
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### 七、功能性测试
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- **SW1**
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```
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[SW1]dis vrrp
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Vlanif10 | Virtual Router 10
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State : Initialize
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Virtual IP : 192.168.10.254
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Master IP : 0.0.0.0
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PriorityRun : 255
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PriorityConfig : 130
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MasterPriority : 0
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Preempt : YES Delay Time : 0 s
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TimerRun : 1 s
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TimerConfig : 1 s
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Auth type : NONE
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Virtual MAC : 0000-5e00-010a
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Check TTL : YES
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Config type : normal-vrrp
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Create time : 2024-08-28 15:57:41 UTC-08:00
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Last change time : 2024-08-28 16:39:16 UTC-08:00
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```
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- **SW2**
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```
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[SW2]dis vrrp
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Vlanif10 | Virtual Router 10
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State : Master
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Virtual IP : 192.168.10.254
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Master IP : 192.168.10.252
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PriorityRun : 100
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PriorityConfig : 100
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MasterPriority : 100
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Preempt : YES Delay Time : 0 s
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TimerRun : 1 s
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TimerConfig : 1 s
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Auth type : NONE
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Virtual MAC : 0000-5e00-010a
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Check TTL : YES
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Config type : normal-vrrp
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Track BFD : 2 Priority increased : 60
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BFD-session state : INITIALIZE
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Create time : 2024-08-28 15:55:20 UTC-08:00
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Last change time : 2024-08-28 16:39:17 UTC-08:00
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```
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@ -14,6 +14,7 @@
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[AR1-GigabitEthernet0/0/0]int g0/0/1
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[AR1-GigabitEthernet0/0/0]int g0/0/1
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[AR1-GigabitEthernet0/0/1]ip add 192.168.13.1 24
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[AR1-GigabitEthernet0/0/1]ip add 192.168.13.1 24
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[AR1-GigabitEthernet0/0/1]quit
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[AR1-GigabitEthernet0/0/1]quit
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[AR1]ip route-static 192.168.2.0 24 192.168.12.2
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[AR1]ip route-static 192.168.2.0 24 192.168.12.2
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[AR1]ip route-static 192.168.2.0 24 192.168.13.2 preference 100
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[AR1]ip route-static 192.168.2.0 24 192.168.13.2 preference 100
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```
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```
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[AR2-GigabitEthernet0/0/0]int g0/0/1
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[AR2-GigabitEthernet0/0/0]int g0/0/1
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[AR2-GigabitEthernet0/0/1]ip add 192.168.24.2 24
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[AR2-GigabitEthernet0/0/1]ip add 192.168.24.2 24
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[AR2-GigabitEthernet0/0/1]quit
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[AR2-GigabitEthernet0/0/1]quit
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[AR2]ip route-static 192.168.1.0 24 192.168.12.1
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[AR2]ip route-static 192.168.1.0 24 192.168.12.1
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[AR2]ip route-static 192.168.2.0 24 192.168.24.4
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[AR2]ip route-static 192.168.2.0 24 192.168.24.4
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```
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```
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[AR3-GigabitEthernet0/0/0]int g0/0/1
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[AR3-GigabitEthernet0/0/0]int g0/0/1
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[AR3-GigabitEthernet0/0/1]ip add 192.168.34.3 24
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[AR3-GigabitEthernet0/0/1]ip add 192.168.34.3 24
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[AR3-GigabitEthernet0/0/1]quit
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[AR3-GigabitEthernet0/0/1]quit
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[AR3]ip route-static 192.168.1.0 24 192.168.13.1
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[AR3]ip route-static 192.168.1.0 24 192.168.13.1
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[AR3]ip route-static 192.168.2.0 24 192.168.34.4
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[AR3]ip route-static 192.168.2.0 24 192.168.34.4
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```
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```
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[AR4-GigabitEthernet0/0/1]int g0/0/2
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[AR4-GigabitEthernet0/0/1]int g0/0/2
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[AR4-GigabitEthernet0/0/2]ip add 192.168.2.254 24
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[AR4-GigabitEthernet0/0/2]ip add 192.168.2.254 24
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[AR4-GigabitEthernet0/0/2]quit
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[AR4-GigabitEthernet0/0/2]quit
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[AR4]ip route-static 192.168.1.0 24 192.168.24.2
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[AR4]ip route-static 192.168.1.0 24 192.168.24.2
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[AR4]ip route-static 192.168.1.0 24 192.168.34.3 preference 100
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[AR4]ip route-static 192.168.1.0 24 192.168.34.3 preference 100
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```
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```
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```
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```
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[AR1]ip route-static 192.168.24.0 24 192.168.12.2
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[AR1]ip route-static 192.168.24.0 24 192.168.12.2
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[AR1]ip route-static 192.168.34.0 24 192.168.13.3
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[AR1]ip route-static 192.168.34.0 24 192.168.13.3
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[AR1]bfd
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[AR1]bfd
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[AR1-bfd]quit
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[AR1-bfd]quit
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[AR1]bfd ntd2407 bind peer-ip 192.168.24.4
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[AR1]bfd ntd2407 bind peer-ip 192.168.24.4
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[AR1-bfd-session-ntd2407]min-tx-interval 10
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[AR1-bfd-session-ntd2407]min-tx-interval 10
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[AR1-bfd-session-ntd2407]min-rx-interval 10
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[AR1-bfd-session-ntd2407]min-rx-interval 10
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[AR1-bfd-session-ntd2407]commit
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[AR1-bfd-session-ntd2407]commit
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[AR1-bfd-session-ntd2407]quit
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[AR1]ip route-static 192.168.2.0 24 192.168.12.2 track bfd ntd2407
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```
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```
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- *注解：*
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- *注解：*
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6. `[AR1-bfd-session-ntd2407]min-tx-interval 10`：设置BFD会话的最小发送间隔为`10`毫秒
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6. `[AR1-bfd-session-ntd2407]min-tx-interval 10`：设置BFD会话的最小发送间隔为`10`毫秒
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7. `[AR1-bfd-session-ntd2407]min-rx-interval 10`：设置BFD会话的最小接收间隔为`10`毫秒
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7. `[AR1-bfd-session-ntd2407]min-rx-interval 10`：设置BFD会话的最小接收间隔为`10`毫秒
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8. `[AR1-bfd-session-ntd2407]commit`：提交BFD会话的配置，使其生效
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8. `[AR1-bfd-session-ntd2407]commit`：提交BFD会话的配置，使其生效
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9. `ip route-static 192.168.2.0 24 192.168.12.2 track bfd ntd2407`：BFD与静态路由联动
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- **AR4**
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- **AR4**
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```
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```
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[AR4]ip route-static 192.168.12.0 24 192.168.24.2
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[AR4]ip route-static 192.168.12.0 24 192.168.24.2
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[AR4]ip route-static 192.168.13.0 24 192.168.34.3
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[AR4]ip route-static 192.168.13.0 24 192.168.34.3
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[AR4]bfd
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[AR4]bfd
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[AR4-bfd]quit
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[AR4-bfd]quit
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[AR4]bfd ntd2407 bind peer-ip 192.168.12.1
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[AR4]bfd ntd2407 bind peer-ip 192.168.12.1
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@ -106,4 +116,37 @@
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5. `[AR1-bfd-session-ntd2407]discriminator remote 1`：设置对端设备BFD会话的鉴别器值为`1`
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5. `[AR1-bfd-session-ntd2407]discriminator remote 1`：设置对端设备BFD会话的鉴别器值为`1`
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6. `[AR1-bfd-session-ntd2407]min-tx-interval 10`：设置BFD会话的最小发送间隔为`10`毫秒
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6. `[AR1-bfd-session-ntd2407]min-tx-interval 10`：设置BFD会话的最小发送间隔为`10`毫秒
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7. `[AR1-bfd-session-ntd2407]min-rx-interval 10`：设置BFD会话的最小接收间隔为`10`毫秒
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7. `[AR1-bfd-session-ntd2407]min-rx-interval 10`：设置BFD会话的最小接收间隔为`10`毫秒
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8. `[AR1-bfd-session-ntd2407]commit`：提交BFD会话的配置，使其生效
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8. `[AR1-bfd-session-ntd2407]commit`：提交BFD会话的配置，使其生效
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### 三、功能性测试
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- **断连测试**
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- 查看BFD信息
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```
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[AR1]dis bfd session all
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--------------------------------------------------------------------------------
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Local Remote PeerIpAddr State Type InterfaceName
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--------------------------------------------------------------------------------
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1 4 192.168.24.4 Down S_IP_PEER -
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--------------------------------------------------------------------------------
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Total UP/DOWN Session Number : 0/1
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```
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- PING
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```
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```
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- Tracert
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```
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|
```
|
||||||
|
|
||||||
|
|
||||||
Loading…
Reference in New Issue
Block a user