难得有时间去机房登记下空闲设备，发现一台1841路由器，通电试了一下，发现还能正常使用。就对路由器配置PPPOE拨号用于wifi网段使用，下面贴出路由器配置。
NET-1841-WIFI-GW#show run
Building configuration...
Current configuration : 1337 bytes
!
version 15.0
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname NET-1841-WIFI-GW
!
boot-start-marker
boot-end-marker
!
enable password Cisco
!
no aaa new-model
dot11 syslog
ip source-route
!
!
!
!
ip cef
no ipv6 cef
multilink bundle-name authenticated
!
vpdn enable
!
!
!
!
!
license udi pid CISCO1841C/K9 sn XXXXXXX
username XXXXXXX password 0 XXXXXXX
!
!
!
!
!
!
interface FastEthernet0/0
description ConToCNC
no ip address
duplex auto
speed auto
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface FastEthernet0/1
ip address 172.16.110.4 255.255.255.0
ip nat inside
ip virtual-reassembly
duplex auto
speed auto
!
interface Dialer1
description DiaToCNC
mtu 1492
ip address negotiated
ip nat outside
ip virtual-reassembly
encapsulation ppp
ip tcp adjust-mss 1450
dialer pool 1
dialer-group 1
ppp chap hostname XXXXXXX
ppp chap password 0 XXXXXXX
ppp ipcp dns request
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
ip nat inside source list 1 interface Dialer1 overload
ip route 0.0.0.0 0.0.0.0 Dialer1
!
access-list 1 permit 172.16.110.0 0.0.0.255
dialer-list 1 protocol ip permit
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
login local
!
scheduler allocate 20000 1000
end
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