ospf学习笔记及配置带拓扑图.doc

ospf配置-单区域

配置路由器的ID号 route id route-id

ospf启动后修改route id，需要重新启动ospf协议

进入ospf区域试图 area raea-id

删除指定的ospf区域 undo area area-id

指定网段运行ospf协议 network ip-address wildcard-mask

显示ospf概要 display ospf brief

显示ospf错误信息 display ospf error

显示ospf接口信息 display ospf interface

显示邻居信息 display ospf peer

显示邻居信息简介 display ospf peer brief

显示ospf路由信息 display ospf routing

显示ospf的调试信息 debugging ospf

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显示在协议运行过程中发生的各种事件，如接口状态改变，邻居状态改变

debugging ospf event

显示在协议运行过程中有关的LSA的信息，如本路由生成的LSA，删除的LSA

debugging ospf lsa

显示5种收发报文的情况

debugging ospf packet

显示用spf算法计算路由的情况

debugging ospf spf

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ospf配置举例

interface ethernet0/0
ip address 10.1.1.1 255.255.255.0
interface senai 0/0
link-protocol ppp
ip address 20.1.1.1 255.255.255.252
ospf eara 1
network 10.1.1.0 0.0.0.255
network 20.1.1.0 0.0.0.3

interface senai 0/0
link-protocol ppp
ip address 20.1.1.2 255.255.255.252
interface ethernet 0/0
ip address 30.1.1.1 255.255.255.0
ospf eara 1
network 20.1.1.0 0.0.0.3
network 30.1.1.0 0.0.0.255

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interface serial 1/0
ip address 172.16.1.2 255.255.255.0
ospf
eara 0
network 172.16.1.2 255.0.0.0
ospf network-type p2mp //将网络的类型修改为point-to-Multpoint

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ospf multi-area

自治系统 区域 区域id

route id 1.1.1.1
interface lookback 0
ip add 1.1.1.1 255.255.255.252
interface s0/0
link-protocol ppp
ip address 20.1.1.1 255.255.255.252
interface ethernet0/0
ip address 10.1.1.1 255.255.255.0
ospf
area 0
network 10.1.1.0 0.0.0.255
network 20.1.1.0 0.0.0.3
network 1.1.1.0 0.0.0.3

route id 1.1.1.2
interface lookback 0
ip address 1.1.1.2 255.255.255.252
interface s0/0
link-protocol ppp
ip address 20.1.1.1 255.255.255.252
interface s0/1
link-protocol ppp
ip address 30.1.1.1 255.255.255.252
ospf
area 0
network 1.1.1.0 0.0.0.3
network 20.1.1.0 0.0.0.3
ospf
area 1
network 30.1.1.0 0.0.0.3

route id 1.1.1.3
interface lookback 0
ip address 1.1.1.3 255.255.255.252
interface s0/0
link-protocol ppp
ip address 30.1.1.1 255.255.255.252
interface ethernet0/0
ip address 40.1.1.1 255.255.255.0
ospf
area 1
network 40.1.1.0 0.0.0.255
network 30.1.1.0 0.0.0.3
network 1.1.1.0 0.0.0.3

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配置ospf区域路由聚合 adr-summary ip-address mask

区域路由聚合只能配置在ABR上

RTA

route id 1.1.1.1
interface lookback 0
ip address 1.1.1.1 255.255.255.255
interface e0/0
ip address 10.1.1.1 255.255.255.0
interface s0/0
link-protocol ppp
ip address 20.1.1.1 255.255.255.252
ospf
area 0
network 10.1.1.0 0.0.0.255
network 1.1.1.0 0.0.0.0
network 20.1.1.0 0.0.0.3

route id 1.1.1.2
interface lookback 0
ip address 1.1.1.2 255.255.255.255
interface s0/0
link-protocol ppp
ip address 20.1.1.2 255.255.255.252
interface s0/1
link-protocol ppp
ip address 30.1.1.1 255.255.255.252
ospf
area 0
network 20.1.1.0 0.0.0.3
network 1.1.1.0 0.0.0.0
ospf
area 1
network 30.1.1.0 0.0.0.3
abr-summary 40.1.0.0 255.255.0.0 // 配置区域路由聚合

route id 1.1.1.3
interface lookback 0
ip address 1.1.1.3 255.255.255.255
interface s0/0
link-protocol ppp
ip sddress 30.1.1.2 255.255.255.252
interface e0/0
ip address 40.1.1.0 255.255.255.0
interface e0/1
ip address 40.1.2.0 255.255.255.0
ospf
area 1
network 40.1.2.0 0.0.0.255
network 40.1.1.0 0.0.0.255
network 30.1.1.0 0.0.0.255
network 1.1.1.0 0.0.0.0

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配置ospf引入路由聚合命令

[undo]import-route protocol

配置ospf引入外部路由的最小时间间隔 default interval seconds

恢复引入外部路由最小时间间隔的缺省值 undo default interval

配置ospf每次引入路由的数量上限 default limit routes

恢复每次引入外部路由的数量上限 undo default limit

恢复）配置ospf在接收外部路由时缺省的花费值 [undo]default cost value

配置ospf路由集合 asbr-summary ip-address mask

注意：区域路由聚合 与 引入路由聚合 是不同的概念

route id 1.1.1.1
interface lookback 0
ip address 1.1.1.1 255.255.255.255
interface e0/0
ip address 10.1.1.1 255.255.255.0
interface s0/0
link-protocol ppp
ip address 20.1.1.1 255.255.255.252
ospf
area 0
network 1.1.1.0 0.0.0.0
network 10.1.1.0 0.0.0.3
network 20.1.1.0 0.0.0.3

route id 1.1.1.2
interface lookback 0
ip address 1.1.1.2 255.255.255.255
interface s0/0
link-protocol ppp
ip address 20.1.1.2 255.255.255.252
interface s0/0
link-protocol ppp
ip address 30.1.1.1 255.255.255.252
ospf
area 0
network 20.1.1.0 0.0.0.3
network 1.1.1.0 0.0.0.0
ospf
area 1
network 30.1.1.0 0.0.0.3

route id 1.1.1.3
interface lookback 0
ip address 1.1.1.3 255.255.255.255
interface s0/0
link-protocol ppp
ip address 30.1.1.2 255.255.255.252
interface e0/0
ip address 40.1.1.0 255.255.255.0
interface e/1
ip address 40.1.1.2.0 255.255.255.0
import-route direct //配置引入路由命令
asbr-summmary 40.1.0.0 255.255.0.0 // 配置路由汇聚
ospf
area 1
network 1.1.1.0 0.0.0.0
network 30.1.1.0 0.0.0.3

对进行引入路由汇聚的网段不用network发布

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stub 区域配置命令

route id 1.1.1.1
interface lookback 0
ip address 1.1.1.1 255.255.255.255
interface e0/0
ip address 10.1.1.1 255.255.255.0
interface s0/0
link-protocol ppp
ip address 20..1.1.1 255.255.255.255
import static //引入静态路由
ospf area 0
network 1.1.1.0 0.0.0.0
network 10.1.1.0 0.0.0.255
network 20.1.1.0 0.0.0.3
ip-route static 100.1.1.0 255.255.255.0

route id 1.1.1.2
interface lookback 0
ip address 1.1.1.2 255.255.255.255
interface s0/0
link-protocol ppp
ip address 20.1.1.2 255.255.255.252
interface s0/1
link-protocol ppp
ip address 30.1.1.1 255.255.255.252
ospf
area 0
network 20.1.1.0 0.0.0.3
ospf
area 1
stub //配置stub
network 30.1.1.0 0.0.0.3

route id 1.1.1.3
interface lookback 0
ip address 1.1.1.3 255.255.255.255
interface s0/0
link-protocol ppp
ip address 30.1.1.2 255.255.255.252
interface e0/1
ip address 40.1.2.0 255.255.255.0
interface e0/0
ip address 40.1.1.0 255.255.255.0
ospf
area 1
stub
network 40.1.1.0 0.0.0.255
network 40.1.2.0 0.0.0.255
network 30.1.1.0 0.0.0.3
network 1.1.1.0 0.0.0.0

注意：对配置好的stub区域时要发布该区域的所有网段

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完全stub区域配置举例

配置Total stub 和 stub 相比只需要在ABR上配置stub no-summary

route id 1.1.1.1
interface lookback 0
ip address 1.1.1.1 255.255.255.255
interface s0/0
link-protocol ppp
ip address 20.1.1.1 255.255.255.252
interface e0/0
ip address 10.1.1.1 255.255.255.0
import static
ospf
area 0
network 20.1.1.0 0.0.0.3
network 10.1.1.0 0.0.0.255
network 1.1.1.0 0.0.0.0
ip route-static 100.1.1.0 50.1.1.2

route ip 1.1.1.2
interface lookback 0
ip address 1.1.1.0 255.255.255.255
interface s0/0
link-protocol ppp
ip address 20.1.1.2 255.255.255.252
interface s0/1
link-protocol ppp
ip address 30.1.1.1.1 255.255.255.252
ospf
area 0
network 20.1.1.2 0.0.0.3
network 1.1.1.0 0.0.0.0
ospf
area 1
stub //配置Total stub
stub no-summary //
network 30.1.1.1 0.0.0.3

route id 1.1.1.3
interface lookback 0
ip address 1.1.1.3 255.255.255.255
interface s0/0
link-protocol ppp
ip address 30.1.1.2 255.255.255.252
interface e0/0
ip address 40.1.1.0 255.255.255.0
interface e0/1
ip address 40.1.2.0 255.255.255.0
ospf
area 0
stub
network 40.1.1.0 0.0.0.255
network 40.1.2.0 0.0.0.255
network 1.1.1.0 0.0.0.0
network 30.1.1.0 0.0.0.3

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ospf的NSSA区域配置命令（Not-So-Stubby-Area）

这种区域能够以受限的方式引入AS外部路由

route id 1.1.1.1
interface lookback 0
ip address 1.1.1.1 255.255.255.255
interface ethernet0/0
ip address 10.1.1.1 255.255.255.0
interface s0/0
link-protocol ppp
ip address 20.1.1.1 255.255.255.252
ospf
area 0
network 20.1.1.0 0.0.0.3
network 10.1.1.0 0.0.0.255
network 1.1.1.1 0.0.0.0

route id 1.1.1.2
interface lookback 0
ip address 1.1.1.2 255.255.255.255
interface s0/0
link-protocol ppp
ip address 20.1.1.2 255.255.255.252
interface s0/1
link-protocol ppp
ip address 30.1.1.1 255.255.255.252
ospf
area 0
network 20.1.1.0 0.0.0.3
network 1.1.1.0 0.0.0.0
ospf
area 1
nssa default-route-advertise //在area 1区域内通告默认路由，配置NSSA
network 30.1.1.0 0.0.0.3

route id 1.1.13
interface lookback 0
ip address 1.1.1.3 255.255.255.255
interface s0/0
link-protocol ppp
ip address 30.1.1.2 255.255.255.252
interface s0/1
link-protocol ppp
ip address 50.1.1.2 255.255.255.252
interface e0/1
ip address 40.1.2.0 255.255.255.0
interface e0/0
ip address 40.1.1.0 255.255.255.0
import static // 引入外部静态路由
ospf
area 1
nssa //开启nssa
network 40.1.1.0 0.0.0.255
network 40.1.2.0 0.0.0.255
network 30.1.1.0 0.0.0.3
ip route-static 100.1.1.0 24 50.1.1.2
network 1.1.1.0 0.0.0.0
networ 50.1.1.0 0.0.0.3

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ospf Total NSSA

route id 1.1.1.1
interface lookback 0
ip address 1.1.1.1 255.255.255.255
interface ethernet0/0
ip address 10.1.1.1 255.255.255.0
interface s0/0
link-protocol ppp
ip address 20.1.1.1 255.255.255.252
ospf
area 0
network 10.1.1.0 0.0.0.255
network 20.1.1.0 0.0.0.3
network 1.1.1.0 0.0.0.0

route id 1.1.1.2
interface lookback 0
ip address 1.1.1.2 255.255.255.255
interface s0/0
link-protocol ppp
ip address 20.1.1.2 255.255.255.252
intrface s0/1
link-protocol ppp
ip address 30.1.1.1 255.255.255.252
ospf
area 0
network 20.1.1.0 0.0.0.3
ospf
area 1
nssa defalut-route-advertise no-summary // 配置Total NSSA
network 30.1.1.0 0.0.0.3
network 1.1.1.0 0.0.0.0

route id 1.1.1.3
interface lookback 0
ip address 1.1.1.3 255.255.255.255
interface s0/0
link-protocol ppp
ip address 30.1.1.2 255.255.255.255
interface s0/1
link-protocol ppp
ip address 50.1.1.2 255.255.255.252
interface ethernet0/1
ip address 40.1.2.0 255.255.255.0
interface ethernet0/0
ip address 40.1.1.0 255.255.255.0
import static
ospf
area 1
nssa
ip route-static 100.1.1.0 24 50.1.1.2
network 40.1.1.0 0.0.0.255
network 40.1.2.0 0.0.0.255
network 50.1.1.0 0.0.0.3
network 30.1.1.0 0.0.0.3
network 1.1.1.0 0.0.0.0