Cisco配置：主机名、标语、线路和密码。使用 cisco 作为用户 EXEC 密码，class 作为特权 EXEC 密码。cisco作为vty密码 ，加密所有密码，配置ip（4/6）地址

主机名
标语
使用 cisco 作为用户 EXEC 密码，
class 作为特权 EXEC 密码。
cisco作为vty密码 ，
加密所有密码。

IPV4：Branch-A

enable
configure terminal

hostname Branch-A

banner motd #Branch-A#

enable secret class

line console 0
password cisco
login

service password-encryption

line vty 0 15
password cisco

int g0/2
ip address 172.20.31.254 255.255.255.252
no shutdown
int g0/0
ip address 172.20.16.1 255.255.254.0
no shutdown
int g0/1
ip address 172.20.18.1 255.255.255.0
no shutdown

IPV6：Branch-B

enable
configure terminal

hostname Branch-B

banner motd #Branch-B#

enable secret class

line console 0
password cisco
login

service password-encryption

line vty 0 15
password cisco

int g0/2
ipv6 add 2001:DB8:FFFF:FFFF::2/64
ipv6 address FE80::B link-local 
no shut

int g0/0
ipv6 address 2001:DB8:FADE:00FF::1/64
ipv6 address FE80::B link-local
no shut

int g0/1
ipv6 address 2001:DB8:FADE:0100::1/64
ipv6 address FE80::B link-local
no shut