VRRP与BFD的联动

实验拓扑

实验要求

全网使用 OSPF 路由协议联通，SW1 与 SW2 为 VRRP 备份组， SW2 为 Master；在 SW2 与 R1 上启用 BFD，当SW2 与 R1 的互联链路出现故障时，SW2 的 BFD 功能能够快速感知并切换为备用网关状态，令 SW1 成为主用网关。

实验步骤

R1:

sysname AR1

bfd

interface GigabitEthernet0/0/0

ip address 192.168.1.1 255.255.255.0

interface GigabitEthernet0/0/1

ip address 192.168.2.1 255.255.255.0

interface GigabitEthernet0/0/2

ip address 10.1.1.1 255.255.255.0

bfd 1 bind peer-ip 172.16.1.1 source-ip 192.168.2.1 auto

commit

ospf 1 router-id 1.1.1.1

area 0.0.0.0

network 10.1.1.0 0.0.0.255

network 192.168.1.0 0.0.0.255

network 192.168.2.0 0.0.0.255

SW1:

sysname SW1

vlan batch 30 50

interface Vlanif30

ip address 192.168.3.2 255.255.255.0

interface Vlanif50

ip address 172.16.1.2 255.255.255.0

vrrp vrid 47 virtual-ip 172.16.1.254

vrrp vrid 47 priority 150

interface GigabitEthernet0/0/1

port link-type access

port default vlan 50

interface GigabitEthernet0/0/2

port link-type access

port default vlan 30

ospf 1 router-id 5.5.5.5

area 0.0.0.0

network 192.168.3.0 0.0.0.255

network 172.16.1.0 0.0.0.255

SW2:

sysname SW2

vlan batch 40 50

bfd

interface Vlanif40

ip address 192.168.4.2 255.255.255.0

interface Vlanif50

ip address 172.16.1.1 255.255.255.0

vrrp vrid 47 virtual-ip 172.16.1.254

vrrp vrid 47 priority 200

vrrp vrid 47 track bfd-session session-name 1 reduced 51

interface GigabitEthernet0/0/1

port link-type access

port default vlan 50

interface GigabitEthernet0/0/2

port link-type access

port default vlan 40

bfd 1 bind peer-ip 192.168.2.1 source-ip 172.16.1.1 auto

commit

ospf 1 router-id 2.2.2.2

area 0.0.0.0

network 192.168.4.0 0.0.0.255

network 172.16.1.0 0.0.0.255

SW3:

sysname SW3

vlan batch 10 30

interface Vlanif10

ip address 192.168.1.2 255.255.255.0

interface Vlanif30

ip address 192.168.3.1 255.255.255.0

interface MEth0/0/1

interface GigabitEthernet0/0/1

port link-type access

port default vlan 30

interface GigabitEthernet0/0/2

port link-type access

port default vlan 10

ospf 1 router-id 3.3.3.3

area 0.0.0.0

network 192.168.1.0 0.0.0.255

network 192.168.3.0 0.0.0.255

SW4:

sysname SW4

vlan batch 20 40

interface Vlanif20

ip address 192.168.2.2 255.255.255.0

interface Vlanif40

ip address 192.168.4.1 255.255.255.0

interface GigabitEthernet0/0/1

port link-type access

port default vlan 40

interface GigabitEthernet0/0/2

port link-type access

port default vlan 20

ospf 1 router-id 4.4.4.4

area 0.0.0.0

network 192.168.2.0 0.0.0.255

network 192.168.4.0 0.0.0.255

实验验证

链路正常：

<SW2>dis bfd session all

--------------------------------------------------------------------------------

Local Remote PeerIpAddr State Type InterfaceName

--------------------------------------------------------------------------------

8192 8192 192.168.2.1 Up S_AUTO_PEER -

--------------------------------------------------------------------------------

Total UP/DOWN Session Number : 1/0

<SW2>dis vrrp

Vlanif50 | Virtual Router 47

State : Master

Virtual IP : 172.16.1.254

Master IP : 172.16.1.1

PriorityRun : 200

PriorityConfig : 200

MasterPriority : 200

Preempt : YES Delay Time : 0 s

TimerRun : 1 s

TimerConfig : 1 s

Auth type : NONE

Virtual MAC : 0000-5e00-012f

Check TTL : YES

Config type : normal-vrrp

Track BFD : 1 Priority reduced : 51

BFD-session state : UP

Create time : 2022-08-26 13:57:56 UTC-08:00

Last change time : 2022-08-26 14:29:12 UTC-08:00

链路异常：

<SW2>dis vrrp

Vlanif50 | Virtual Router 47

State : Backup

Virtual IP : 172.16.1.254

Master IP : 172.16.1.2

PriorityRun : 149

PriorityConfig : 200

MasterPriority : 150

Preempt : YES Delay Time : 0 s

TimerRun : 1 s

TimerConfig : 1 s

Auth type : NONE

Virtual MAC : 0000-5e00-012f

Check TTL : YES

Config type : normal-vrrp

Track BFD : 1 Priority reduced : 51

BFD-session state : DOWN

Create time : 2022-08-26 13:57:56 UTC-08:00

Last change time : 2022-08-26 14:46:20 UTC-08:00

<SW2>dis bfd se

<SW2>dis bfd session al

<SW2>dis bfd session all

--------------------------------------------------------------------------------

Local Remote PeerIpAddr State Type InterfaceName

--------------------------------------------------------------------------------

8192 8192 192.168.2.1 Init S_AUTO_PEER -

--------------------------------------------------------------------------------

Total UP/DOWN Session Number : 0/1

<SW1>dis vrrp

Vlanif50 | Virtual Router 47

State : Master

Virtual IP : 172.16.1.254

Master IP : 172.16.1.2

PriorityRun : 150

PriorityConfig : 150

MasterPriority : 150

Preempt : YES Delay Time : 0 s

TimerRun : 1 s

TimerConfig : 1 s

Auth type : NONE

Virtual MAC : 0000-5e00-012f

Check TTL : YES

Config type : normal-vrrp

Create time : 2022-08-26 14:00:05 UTC-08:00

Last change time : 2022-08-26 14:46:20 UTC-08:00

VRRP与BFD的联动相关推荐

杂项《转化生命的友谊》转化生命的良友
2020-06-04_5ed8bd94c4873.jpeg 2020-06-04_5ed8866d17678.png 查看全文 http://www.taodudu.cc/news/show-4445 ...
HCIP H12-222 题库
习题 1 IP报文中用Tos字段进行Qos的标记,Tos字段中是使用前6bit来标记DSCP的. A. 正确 B. 错误答案: A 习题 2 传统的丢包策略采用尾部丢弃(Tail-Drop)的方法, ...
HCIP-H12-222练习题
HCIP-H12-222练习题习题 1 IP报文中用Tos字段进行Qos的标记,Tos字段中是使用前6bit来标记DSCP的. A. 正确 B. 错误答案: A 习题 2 传统的丢包策略采用尾部丢 ...
HCIP-DATACOM-带解析-1-50题(821)
1.AS边界路由器可以是内部路由器IR,或者是ABR,必须属于骨干区域 A.正确 B.错误 [正确答案]B [答案解析]所谓的 AS边界路由器,指的是那些具有引入外部路由能力的路由器.所以 AS边界路 ...
H12-821题库（带详细解析）201-300题
需要最新题库的小伙伴可以直接点赞+关注后私信(题库)获取! 201. (单选题)第三类LSA的Link ID是:60085467 A.所描述的ABR的Router ID ...
bfd联动 cisco_BFD联动配置
一.BFD定义:双向转发检测BFD(Bidirectional Forwarding Detection)是一种全网统一的检测机制,用于快速检测.监控网络中链路或者IP路由的转发连通状况. BDF配置 ...
华为VRRP+BFD配置
-我们先把基本的网络配置先配置完成才能完成华为VRRP+BFD配置的配置交换机接口及VLAN的配置 SW1 sys sys sw1 un info en vlan 10 int g0/0/2 por ...
【实验】配置VRRP负载分担
拓扑图规格适用于所有版本.所有形态的AR路由器. 组网需求如图1所示,某公司网络中RouterA和RouterB为直连设备,下行连接一台交换机设备.用户希望对网络中的四种业务:上网.邮件.视频及 ...
【分享】VRRP不懂不行
VRRP(Virtual Router Redundancy Protocol虚拟路由冗余协议)是由IETF提出的解决局域网中配置静态网关出现单点失效现象的路由协议,在学习路由交换技术中,我们经常会遇 ...

VRRP与BFD的联动

VRRP与BFD的联动相关推荐

最新文章

热门文章