OSPF网络类型

二.R5为主认证方
[R5-Serial3/0/0]ip address 15.1.1.2 24
[R5]aaa
[R5-aaa]local-user huawei password cipher 123456
Info: Add a new user.
[R5-aaa]local-user huawei service-type ppp

pap认证
[R5]int s3/0/0
[R5-Serial3/0/0]ppp authentication-mode pap （发起pap认证需求）[R1-Serial4/0/0]ppp pap local-user huawei password cipher 123456

chap认证
[R5-Serial3/0/1]ip address 25.1.1.2 24
[R5-Serial3/0/1]ppp authentication-mode chap
[R2-Serial4/0/0]ppp chap local-user huawei password cipher 123456

R3与R5使用HDLC封装
[R3-Serial4/0/0]ip address 35.1.1.1 24
[R3-Serial4/0/0]link-protocol hdlc

[R5-Serial4/0/0]ip address 35.1.1.2 24
[R5-Serial4/0/0]link-protocol hdlc

当两边封装模式一样时，可ping通，反之亦然

三.
R1-R4需要和R5的环回通,写缺省
[R1]ip route-static 0.0.0.0 0 15.1.1.2
[R2]ip route-static 0.0.0.0 0 25.1.1.2
[R3]ip route-static 0.0.0.0 0 35.1.1.2
[R4]ip route-static 0.0.0.0 0 45.1.1.2

R1与R4之间做GRE
[R1]int Tunnel 0/0/0
[R1-Tunnel0/0/0]ip address 10.1.1.1 24
[R1-Tunnel0/0/0]tunnel-protocol gre
[R1-Tunnel0/0/0]source 15.1.1.1
[R1-Tunnel0/0/0]destination 45.1.1.1

— 10.1.1.2 ping statistics —
5 packet(s) transmitted
0 packet(s) received
100.00% packet loss

[R4]int Tunnel 0/0/0
[R4-Tunnel0/0/0]ip address 10.1.1.2 24
[R4-Tunnel0/0/0]tunnel-protocol gre
[R4-Tunnel0/0/0]source 45.1.1.1
[R4-Tunnel0/0/0]destination 15.1.1.1

R１，R２，R３做ＭＧＲＥ
[R1]int Tunnel 0/0/1
[R1-Tunnel0/0/1]ip address 10.1.2.1 24
[R1-Tunnel0/0/1]tunnel-protocol gre p2mp
[R1-Tunnel0/0/1]source 15.1.1.1
Jul 8 2021 21:33:26-08:00 R1 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP
on the interface Tunnel0/0/1 has entered the UP state.
[R1-Tunnel0/0/1]nhrp entry multicast dynamic
[R1-Tunnel0/0/1]nhrp network-id 100

[R2]int Tunnel 0/0/0
[R2-Tunnel0/0/0]ip address 10.1.2.2 24
[R2-Tunnel0/0/0]tunnel-protocol gre p2mp
[R2-Tunnel0/0/0]source s4/0/0
Jul 8 2021 21:36:59-08:00 R2 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP
on the interface Tunnel0/0/0 has entered the UP state.
[R2-Tunnel0/0/0]nhrp entry 10.1.2.1 15.1.1.1 register
[R2-Tunnel0/0/0]nhrp network-id 100

[R3]int Tunnel 0/0/0
[R3-Tunnel0/0/0]ip address 10.1.2.3 24
[R3-Tunnel0/0/0]tunnel-protocol gre p2mp
[R3-Tunnel0/0/0]source s4/0/0
Jul 8 2021 21:42:46-08:00 R3 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP
on the interface Tunnel0/0/0 has entered the UP state.
[R3-Tunnel0/0/0]nhrp entry 10.1.2.1 15.1.1.1 register
[R3-Tunnel0/0/0]nhrp network-id 100


四.整个私有网络基于rip全网可达
整个网络已经由多点隧道技术打通和点到点隧道技术打通,所以R5可以认为不存在.

[R1]rip 1
[R1-rip-1]version 2
[R1-rip-1]network 192.168.1.0
[R1-rip-1]network 10.0.0.0

[R2]rip 1
[R2-rip-1]ver 2
[R2-rip-1]network 10.0.0.0
[R2-rip-1]network 192.168.2.0

[R3]rip 1
[R3-rip-1]ver 2
[R3-rip-1]network 10.0.0.0
[R3-rip-1]network 192.168.3.0

[R4]rip 1
[R4-rip-1]ver 2
[R4-rip-1]network 192.168.4.0
[R4-rip-1]network 10.0.0.0
全网可达
（R2学习不到R3的192.168.3.0/24网段，R3学习不到R2的192.168.2.0/24网段，因为RIP的水平分割）
undo rip split-horizon (关闭RIP的水平分割)

五.所有的路由器基于环网私有地址为源ｉｐ时，可以正常访问R5的环回
[R1]acl 2000
[R1-acl-basic-2000]rule permit source 192.168.2.0 0.0.0.255
[R1-acl-basic-2000]int s4/0/0
[R1-Serial4/0/0]nat outbound 2000

[R2]acl 2000
[R2-acl-basic-2000]rule permit source 192.168.2.0 0.0.0.255
[R2-acl-basic-2000]int s4/0/0
[R2-Serial4/0/0]nat outbound 2000

2-acl-basic-2000]rule permit source 192.168.2.0 0.0.0.255
[R2-acl-basic-2000]int s4/0/0
[R2-Serial4/0/0]nat outbound 2000

[R3]acl 2000
[R3-acl-basic-2000]rule permit source 192.168.3.0 0.0.0.255
[R3-acl-basic-2000]int s4/0/0
[R3-Serial4/0/0]nat outbound 2000

[R4]acl 2000
[R4-acl-basic-2000]rule permit source 192.168.4.0 0.0.0.255
[R4-acl-basic-2000]int g0/0/0
[R4-GigabitEthernet0/0/0]nat outbound 2000