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发布时间 : 2023-06-01 10:46

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简单的 SLA 实验
SLA 和路由递归查询
动态路由协议
实验模板

简单的 SLA 实验

使用 SLA 检测主链路的连接状态，实现主备链路的动态切换功能。

实验拓扑

配置概述

1. 配置接口IP
2. 配置除目标网络的主备路由的其他路由信息
3. 配置SLA
4. 配置Track 23 ip sla 23
5. 配置主静态路由tarck 23
6. 配置备份静态路由 permanent
language-bash

>
enable
#
configure terminal
hostname R1
##
interface ethernet 0/0
ip address 12.1.1.1 255.255.255.0
no shutdown
exit
#
interface ethernet 0/1
ip address 13.1.1.1 255.255.255.0
no shutdown
exit
#
ip route 2.2.2.2 255.255.255.255 ethernet 0/0 12.1.1.2
ip route 3.3.3.3 255.255.255.255 ethernet 0/1 13.1.1.3
language-bash

>
enable
#
configure terminal
hostname R2
#
interface ethernet 0/0
ip address 12.1.1.2 255.255.255.0
no shutdown
exit
#
interface ethernet 0/1
ip address 23.1.1.2 255.255.255.0
no shutdown
exit
#
interface loopback 0
ip address 2.2.2.2 255.255.255.255
exit
#
ip route 13.1.1.0 255.255.255.0 ethernet 0/0 12.1.1.1
ip route 3.3.3.0 255.255.255.0 etheret 0/1 23.1.1.3 permanent
#
ip sla 23
icmp-echo 13.1.1.3 source 12.1.1.2
frequency 5
threshold 1000
timeout 2000
exit
#
ip sla schedule 23 start-time now life forever
track 23 ip sla 23 reachability
exit
#
ip route 3.3.3.3 255.255.255.255 ethernet 0/0 12.1.1.1 track 23
language-bash

>
enable
#
configure terminal
hostname R3
#
interface ethernet 0/0
ip address 13.1.1.3 255.255.255.0
no shutdown
exit
#
interface ethernet 0/1
ip address 23.1.1.3 255.255.255.0
no shutdown
exit
#
interface loopback 0
ip address 3.3.3.3 255.255.255.255
exit
#
ip route 12.1.1.2 255.255.255.255 ethernet 0/0 13.1.1.1
ip route 2.2..2.0 255.255.255.0 ethernet 0/1 23.1.1.2 permanent
#
ip sla 23
icmp-echo 12.1.1.2 source-ip 13.1.1.3
frequency 5
threshold 1000
timeout 2000
exit
#
ip sla schedule 23 start-time now life forever
track 23 ip sla 23 reachability
exit
#
ip route 2.2.2.2 255.255.255.255 ethernet 0/0 13.1.1.1 track 23
language-bash

测试验证

# tarcert
traceroute 3.3.3.3 source 2.2.2.2 numeric
# ping
ping 3.3.3.3 source 2.2.2.2 repeat 10000
# show
show ip sla statistics
show run | section track
language-shell

SLA 和路由递归查询

路由递归查询的场景；静态路由联动 SLA 检测工具实现自动化切换；路由非直连下一跳与递归的应用。
若 R2 去往 R3 背后的 100 个网络，有 R1(主)和 R4(备)的 2 条路径，可使用递归查询的方式，只需要在 R2 上面写 100 条路由下一跳为 R3 e0/1 的递归路由和 2 条主备路由即可，

实验拓扑

配置概述

1. 配置接口IP和环回地址
2. 配置去往R3背后网络的静态路由(不可以配置出接口)
3. 配置备份路径的静态路由，修改管理距离为10
4. 配置SLA,SLA的检查路径1= R2 0/0 到 R1 e0/1, 路径2= R3 0/1 到 R1 e0/0
5. 配置track 23 ip sla 23
6. 配置主路径的静态路由 track
# 配置非直连下一跳的静态路由的时候不要携带出接口信息
language-bash

>
enable
#
configure terminal
hostname R1
#
interface ethernet 0/0
ip address 124.1.1.1 255.255.255.0
no shutdown
#
interface ethernet 0/1
ip address 134.1.1.1 255.255.255.0
no shutdown
exit
#
ip route 2.2.2.2 255.255.255.255 ethernet 0/0 124.1.1.2
ip route 3.3.3.3 255.255.255.255 ethernet 0/1 134.1.1.3
#
language-bash

>
enable
#
configure terminal
hostname R2
#
interface ethernet 0/0
ip address 124.1.1.2 255.255.255.0
no shutdown
#
interface loopback 0
ip address 2.2.2.2 255.255.255.255
exit
#
ip route 3.3.3.3 255.255.255.255 134.1.1.3
ip route 134.1.1.0 255.255.255.0 ethernet 0/0 124.1.1.4
#
ip sla 2011
icmp-echo 134.1.1.1 source-ip 124.1.1.2
frequency 5
threshold 1000
timeout 2000
exit
ip sla schedule 2011 start-time now life forever
track 21 ip sla 2011 reachability
exit
ip route 134.1.1.3 255.255.255.255 ethernet 0/0 124.1.1.1 track 21
#
language-bash

>
enable
#
configure terminal
hostname R3
#
interface ethernet 0/0
ip address 124.1.1.4 255.255.255.0
no shutdown
#
interface ehternet 0/1
ip address 134.1.1.4 255.255.255.0
no shutdown
#
ip route 2.2.2.2 255.255.255.255 ethernet 0/0 124.1.1.2
ip route 3.3.3.3 255.255.255.255 ethernet 0/1 134.1.1.3
#
ip sla 3010
icmp-echo 124.1.1.1 source-ip 134.1.1.3
frequency 5
threshold 1000
timeout 2000
exit
ip sla schedule 3010 start-time now life forever
track 31 ip sla 3010 reachability
exit
ip route 124.1.1.2 255.255.255.255 ethernet 0/0 134.1.1.1 track 31
language-bash

>
enable
#
configure terminal
hostname R4
#
interface ethernet 0/0
ip address 134.1.1.3 255.255.255.255
no shutdown
#
interface loopback 0
ip address 3.3.3.3.3 255.255.255.255
exit
#
ip route 2.2.2.2 255.255.255.255 124.1.1.2
ip route 124.1.1.0 255.255.255.0 ethernet 0/0 134.1.1.4
#
language-bash

测试验证

show ip sla sta
show ip sla sum
language-shell

动态路由协议

实验概述。

实验拓扑

配置概述

1.
language-bash

xxxxxxxxxx bash

#
enable
configure terminal
hostname R1
language-bash

测试验证

实验模板

实验概述。

实验拓扑

配置概述

1.
language-bash

#
enable
configure terminal
hostname R1
language-bash

测试验证

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