20201021 cisco RIP

課堂資料

Routing Information Rrotocol ( RIP ) 路由信息協定：

RIP 路由信息協定 - Jan Ho 的網絡世界Jan Ho 的網絡世界

RIP版本差異

	RIP v1	RIP v2
Layer	Application	Application
VLSM & CIDR	X	√
AD	120	120
Metric	hop count	hop count
Update Method	broadcast 255.255.255.255	multicast 224.0.0.9
Auto Summany	X	√

VLSM：Variable Length Subnet Mask

AD：Administration Distance

• IEEE：OSI 第一第二層

• RFC：OSI 第三層以上

課堂練習

Part 01.

期中練習：讓 R1、R2、R3 可以互 ping

操作筆記

設定 R1、R2、R3 IP、Route IP

IP

en

conf t

hostname [路由器名稱]

enable password [密碼]

int e0/0

ip addr [IP] [遮罩]

no shut

exit

int e0/1

ip addr [IP] [遮罩]

no shut

exit

int lo 0

ip addr [IP] [遮罩]

no shut

exit

do writ

do sh ip int brief

設定完後需互ping 測試

R1

R2

R3

Route IP

do sh ip ro

• ro：同等 route

router rip

ver 2

• ver：同等 version

no auto-summary

R1

network 12.1.1.0

network 13.1.1.0

network 1.1.1.0

R2

network 12.1.1.0

network 23.1.1.0

network 2.2.2.0

R3

network 13.1.1.0

network 23.1.1.0

network 3.3.3.0

exit

do show run

R1

R2

R3

exit

sh ip route rip

R1

右擊開啟 Catpure > e0/0

R2

ping 1.1.1.1 source 2.2.2.2

ping 1.1.1.1 repeat 10 source 2.2.2.2

ping 1.1.1.1 repeat 10 source 23.1.1.2

R3

int lo 1

ip addr 172.16.0.1 255.255.255.0

no shut

int lo 2

ip addr 172.16.1.1 255.255.255.0

no shut

int lo 3

ip addr 172.16.2.1 255.255.255.0

no shut

int lo 4

ip addr 172.16.3.1 255.255.255.0

no shut

do sh ip int brief

router rip

network 172.16.0.0

do sh run

^Z

sh ip route

執行結果

R1

R2

R3

R3 進行合併操作

int e0/1

ip summary-address rip 172.16.0.0 255.255.252.0

合併後網路遮罩將變為 22

R1

同時清除 IP Route

clear ip route *

sh ip ro rip

R2

同時清除 IP Route

clear ip route *

sh ip ro rip

Part 02.

操作筆記

R1

en

conf t

hostname R1

do writ

int e0/0

ip addr 192.168.12.1 255.255.255.0

no shut

exit

router rip

version 2

no auto-summary

network 192.168.12.0

exit

R2

en

conf t

hostname R2

do writ

int e0/0

ip addr 192.168.12.2 255.255.255.0

no shut

exit

int e0/1

ip addr 192.168.23.2 255.255.255.0

no shut

exit

router rip

version 2

no auto-summary

network 192.168.12.0

network 192.168.23.0

exit

R3

en

conf t

hostname R3

do writ

int e0/0

ip addr 192.168.23.3 255.255.255.0

no shut

exit

router rip

version 2

no auto-summary

network 192.168.23.0

exit

Passive Interface

操作筆記

R3只想在10.0.23.0/24執行RIP，而不想在10.0.34.0/24執行：

R3

router rip

ver 2

以下分為兩種方法：

method 1

使用 network 10.0.0.0 會讓兩個 interface 都被執行RIP，所以必須加一道passive-interface <interface>讓 e0/1 不執行RIP

passive-interface

method 2

先讓所有 interface passive，然後再 no 掉要執行的 interface

passive-interface default

on passive-interface e0/0

network 10.0.0.0

Default-Information Originate

操作筆記

R2 想發布 Default Route 給R1及R3，只需使用以下指令：

R2

router rip

default-information originate

在R1及R3可看到Default Route

R1

sh ip ro rip

R3

sh ip ro rip