experiment....

Their thinking

Give Way R3 Make a central site

R3R5R6R7 For the border router

Private network basis 172.16.0.0 /26 Divide network segments

On the right RIP The network segment is also divided according to the above network segment

You can visit R4 The loopback of , Just do it net

Reduce LSA The update amount is to summarize

1. Divide network segments

172.16.0.0 /16

Here, first count the areas

common 6 Regions （5 individual OSPF Add 1 individual RIP）

Now it is divided based on the agreement -- Here, different protocols are regarded as the same network segment , Just divide the network segments evenly

common 6 individual

Divide by three 172.16.000 00000.0 /19

Divide into eight network segments

172.16.000 00000.0 /19-- Area 0---0.0

Backbone links also need network segments

There are two kinds of

P2P-- Point to point -- You can give it directly to /30 Just two network segments of --3 individual

MA--- At least you have to get /29 Network segment of --8 individual

there /19-- into /24

Will appear 32 Addresses appear

172.16.0.0 /24--- This can be used as P2P（ Backbone network segment ）

172.16.0.0/30

172.16.0.4/30

172.16.0.8/30

172.16.0.12/30... Reserved network segment

172.16.1.0 /24--MA Network segment

172.16.1.0/29

172.16.1.8/29

......

172.16.31.0 /24--- Altogether 32 Net segment

172.16.001 00000.0 /19-- Area 1---32.0

172.16.32.0 /24---P2P The backbone of

172.16.32.0 /30

172.16.32.4 /30....

172.16.33.0 /24--MA The backbone of

172.16.33.0 /29

172.16.33.4 /29....

172.16.34.0 /24

....

172.16.010 00000.0 /19-- Area 2---64.0

172.16.011 00000.0 /19-- Area 3---96.0

172.16.100 00000.0 /19-- Area 4---128.0

172.16.101 00000.0 /19-- Area 5--RIP---160.0

The latter two are not necessarily used

172.16.110 00000.0 /19

172.16.111 00000.0 /19

IP The address can be divided in this way

Then start directly IP Address

1. First connect to the public network -- do MGRE Environmental Science

R3--R7

R4 yes isp

First configure the public address , The rest of the interfaces belong to the area 0 Private network address within

Then match R4

Then we are doing the default pointing to the public network --- In order to make the public Netcom

R3--R7

Then make a virtual interface

R3 There is a virtual interface , The assigned address is the address of the backbone link

Enable pseudo broadcast

The rest is the same , then IP The address is from 172.16.1.0/29 Take the address from

Declare the interface

Join the zone

Registration information

R5 There is a loop on it -- The user address inside

The remaining ports are also configured

R6 Source interface of

R6 The loopback of 172.16.3.1 24

R7 Source interface of s4/0/0

R7 The loopback of

And then in R3（ center ） You can see it from above

can ping Just pass

Area 1 Inside

R1

P2P The backbone 32.0 24

MA The backbone 33.0 24

User network segment 34.0 24

Area 1 complete

ping Just pass

Area 2

R6 Start matching

64.0 /24--P2P

65.0 /24--MA

65.0/24-- user

R12 There are two on it RIP The Internet

160.1 20

176.1 20

Area 2 It's ready

Area 3 96.0