AUX接MODEN

拿aux接modem，虽然听上去挺简单，但是实际作起来还是有些问题的，特地拿出一个配置分析一下，希望给正在苦苦挣扎的菜鸟有所帮助 
Building configuration... 

Current configuration:
!
version 12.1
service timestamps debug datetime localtime
service timestamps log datetime localtime
service password-encryption
!
hostname SH-2620
!
logging buffered 4096 informational
enable secret 5 $1$kI7E$dleXUO/MXa2hek2C7iKSM/
!
!定义PPP的认证用户
username cisco password 7 070C285F4D06
!
!
clock timezone GMT 8
ip subnet-zero
no ip domain-lookup
!
ip address-pool local
lane client flush
! 

!
!
interface FastEthernet0/0
ip address 192.168.0.254 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0
ip address 10.10.10.2 255.255.255.0
no fair-queue
clockrate 4000000
!此异步口属于虚拟接口，实际不存在
interface Async65
ip unnumbered FastEthernet0/0
encapsulation ppp
dialer in-band
async default routing
async dynamic address
async mode interactive
peer default ip address pool mypool
ppp authentication pap
! 
!IP分配池，连接终端使用 
ip local pool mypool 192.168.0.200 192.168.0.250
ip classless
ip route 0.0.0.0 0.0.0.0 10.10.10.1
ip route 10.64.0.0 255.255.0.0 10.70.1.5
ip route 192.168.0.0 255.255.0.0 10.70.1.5
no ip http server
!
!
line con 0
logging synchronous
transport input none
line aux 0
autoselect ppp
modem Dialin
modem autoconfigure discovery
speed 115200
flowcontrol hardware
line vty 0 4
password 7 14141B180F0B
logging synchronous
login
!
end 


这么多行，看上去很累啊，特别注意看一下interface async65和aux口的配置就行了 

注意事项：aux口和modem的速率必须一致，并在aux口上选择封装PPP协议
我在配置的时候，aux上的autoselect ppp忘加了，搞死了，大家以后要配modem的时候请特别注意。