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OSPf,是一個路由協(xié)議,路由協(xié)議的作用就是讓路由器之前能夠動態(tài)的共享網(wǎng)絡(luò)信息,使其能夠獲得遠程網(wǎng)絡(luò)。

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區(qū)域的概念是OSPF特有的一種屬性,因為OSPF在運行時有一個操作叫做LSA泛洪,泛洪會占用網(wǎng)絡(luò)很大的帶寬,同時消耗路由器的資源,嚴重的影響可能會導(dǎo)致路由器down機。為了減小這種影響,其中一種方式就是減小參與泛洪的路由器的數(shù)量,于是將網(wǎng)絡(luò)中運行OSPF的路由器邏輯的劃分為幾個區(qū)域,泛洪的操作只在區(qū)域中進行,路由器減少了,同樣就是減小了泛洪的影響。當網(wǎng)絡(luò)中的路由器數(shù)量較少的時候,我們可以不對其進行區(qū)域劃分,讓其只運行在一個區(qū)域中,即 area 0,就是單區(qū)域路由了。當路由器數(shù)量較大的時候,就得進行區(qū)域的劃分,劃分之后就是多區(qū)域路由,但不管在什么時候 area 0 必須存在,其他區(qū)域必須與area 0 相連。
實驗環(huán)境:紅,綠,藍三個顏色區(qū)域代表三個不同網(wǎng)絡(luò)的辦公場所,要求使用OSPF協(xié)議實現(xiàn)網(wǎng)絡(luò)互通。
pc1:172.16.1.1
pc2:172.16.2.1
pc3:172.16.3.1
R1:GE0/0/0 172.16.1.254 GE2/0/0 192.168.2.1 GE0/0/1 192.168.1.1
R2:GE0/0/0 172.16.2.254 GE0/0/1 192.168.2.3 GE2/0/0 192.168.2.3
R3:GE0/0/0 172.16.3.254 GE0/0/1 192.168.1.3 GE2/0/0 192.168.3.3
配置PC ip地址
配置路由器
R1:
[R1]INT GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]IP ADD 172.16.1.254 24
May 21 2020 10:38:30-08:00 R1 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP
on the interface GigabitEthernet0/0/0 has entered the UP state.
[R1-GigabitEthernet0/0/0]INT G2/0/0
[R1-GigabitEthernet2/0/0]IP ADD 192.168.2.1 24
May 21 2020 10:38:48-08:00 R1 %%01IFNET/4/LINK_STATE(l)[1]:The line protocol IP
on the interface GigabitEthernet2/0/0 has entered the UP state.
[R1-GigabitEthernet2/0/0]INT G0/0/1
[R1-GigabitEthernet0/0/1]IP ADD 192.168.1.1 24
[R1-GigabitEthernet0/0/1]
May 21 2020 10:39:03-08:00 R1 %%01IFNET/4/LINK_STATE(l)[2]:The line protocol IP
on the interface GigabitEthernet0/0/1 has entered the UP state.
R2:
[R2]int g0/0/1
[R2-GigabitEthernet0/0/1]ip add 192.168.2.2 24
May 21 2020 10:40:28-08:00 R2 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP
on the interface GigabitEthernet0/0/1 has entered the UP state.
[R2-GigabitEthernet0/0/1]int g2/0/0
[R2-GigabitEthernet2/0/0]ip add 192.168.3.2 24
May 21 2020 10:40:39-08:00 R2 %%01IFNET/4/LINK_STATE(l)[1]:The line protocol IP
on the interface GigabitEthernet2/0/0 has entered the UP state.
[R2-GigabitEthernet2/0/0]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 172.16.2.254 24
May 21 2020 10:40:57-08:00 R2 %%01IFNET/4/LINK_STATE(l)[2]:The line protocol IP
on the interface GigabitEthernet0/0/0 has entered the UP state.
R3:
[R3]int GigabitEthernet 0/0/0
[R3-GigabitEthernet0/0/0]ip add 172.16.3.254 24
May 21 2020 10:42:11-08:00 R3 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP
on the interface GigabitEthernet0/0/0 has entered the UP state.
[R3-GigabitEthernet0/0/0]int g0/0/1
[R3-GigabitEthernet0/0/1]ip add 192.168.1.3 24
May 21 2020 10:42:21-08:00 R3 %%01IFNET/4/LINK_STATE(l)[1]:The line protocol IP
on the interface GigabitEthernet0/0/1 has entered the UP state.
[R3-GigabitEthernet0/0/1]int g2/0/0
[R3-GigabitEthernet2/0/0]ip add 192.168.3.3 24
May 21 2020 10:42:51-08:00 R3 %%01IFNET/4/LINK_STATE(l)[2]:The line protocol IP
on the interface GigabitEthernet2/0/0 has entered the UP state.
[R3-GigabitEthernet2/0/0]
配置OSPF
R1:
[R1]OSPF 1
[R1-ospf-1]AREA 0
[R1-ospf-1-area-0.0.0.0]NETWORK 172.16.1.0 0.0.0.255
[R1-ospf-1-area-0.0.0.0]NETWORK 192.168.2.0 0.0.0.255
[R1-ospf-1-area-0.0.0.0]NETWORK 192.168.1.0 0.0.0.255
R2:
[R2]OSPF 1
[R2-ospf-1]AREA 0
[R2-ospf-1-area-0.0.0.0]NETWO
[R2-ospf-1-area-0.0.0.0]network 172.16.2.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]NETWORK 192.168.2.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]NETWORK 192.168.3.0 0.0.0.255
R3:
[R3]OSPF 1
[R3-ospf-1]AREA 0
[R3-ospf-1-area-0.0.0.0]NETWORK 172.16.3.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]NETWORK 192.168.1.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]NETWORK 192.168.3.0 0.0.0.255
測試pc1 ping pc2,pc3
如此,OSPF配置完畢!
當前文章:配置OSPF單區(qū)域
轉(zhuǎn)載源于:http://www.fisionsoft.com.cn/article/djpjjcg.html


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