Конфигурируем 3G модем для Cisco (на примере Sierra Wireless 880E-G).Сначала нужно создать профиль соединения (тоесть APN логин и пароль)делается это так (не из глобальной конфигурации а из enable)Router#cellular 0 gsm profile create 3 fixedip.nw chap megafon megafon
Далее нужно настроить интерфейс cellular - у меня это cellular 0Router#conf tRouter(config)#interface cellular 0Router(config-if)#encapsulation pppRouter(config-if)#ppp chap hostname megafonRouter(config-if)#ppp chap password megafonRouter(config-if)#ppp ipcp dns requestRouter(config-if)#async mode interactiveRouter(config-if)#ip address negotiated
Router(config)#chat-script MEGAFON "" "ATD*99*3#" TIMEOUT 30 CONNECTТут 3 - это номер профиля который мы создали выше.
Router(config)#interface cellular 0Router(config-if)#dialer string MEGAFON
Ищем линию связанную с модемом:Router#sh line Tty Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int* 0 CTY - - - - - 0 0 0/0 - 1 AUX 0/0 - - - - - 0 0 0/0 -I 3 TTY - - - - - 0 0 0/0 Ce0 8 VTY - - - - - 0 0 0/0 - 9 VTY - - - - - 0 0 0/0 - 10 VTY - - - - - 0 0 0/0 - 11 VTY - - - - - 0 0 0/0 - 12 VTY - - - - - 0 0 0/0 -
У меня это line 3Router(config)#line 3Router(config-line)#script dialer MEGAFONRouter(config-line)#modem inOutRouter(config-line)#no execRouter(config-line)#exec-timeout 0 0Теперь нам еще понадобится ACL в котором будет указан траффик который должен попадать в dialer.Router(config)#access-list 1 permit anyRouter(config)#dialer-list 1 protocol ip list 1И теперь этот dialer-list указать в интерфейсе.Router(config)#interface cellular 0Router(config-if)#dialer-group 1Далее на него нужен маршрут, наверное с указанием веса, так как врядли это единственный маршрут, пусть будет так:Router(config)#ip route 0.0.0.0 0.0.0.0 cellular 0 200Ну и в заключении NAT:Router(config)#ip access-list extended NATACLRouter(config-ext-nacl)#permit ip 192.168.0.0 0.0.0.255 any
Router(config)#ip nat inside source list NATACL interface cellular 0 overload
Router(config)#interface cellular 0Router(config-if)#ip nat outsideТеперь дело за проверкой.Router#sh int cellular 0Cellular0 is up, line protocol is up Hardware is 3G Modem-HSPA/UMTS/EDGE/GPRS-850/900/1800/1900/2100MHz / Global Description: uplink Internet address is 100.87.93.139/32 MTU 1500 bytes, BW 2000 Kbit/sec, DLY 100000 usec, reliability 255/255, txload 4/255, rxload 18/255 Encapsulation PPP, LCP Open Open: IPCP, loopback not set Keepalive not supported Last input 00:00:00, output 00:00:00, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/10 (size/max) 5 minute input rate 142000 bits/sec, 20 packets/sec 5 minute output rate 34000 bits/sec, 19 packets/sec 6426 packets input, 6566728 bytes, 0 no buffer Received 0 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 5176 packets output, 1089212 bytes, 0 underruns 0 output errors, 0 collisions, 2 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up
Router#sh cellular 0 network
Current Service Status = Normal, Service Error = None
Current Service = Combined
Packet Service = HSDPA (Attached)
Packet Session Status = Active
Current Roaming Status = Home
Network Selection Mode = Automatic
Country = RUS, Network = MegaFon
Mobile Country Code (MCC) = 250
Mobile Network Code (MNC) = 2
Location Area Code (LAC) = 7806
Routing Area Code (RAC) = 39
Cell ID = 40740
Primary Scrambling Code = 419
PLMN Selection = Automatic
Registered PLMN = , Abbreviated =
Service Provider = MegaFon
Ну и в заключении весь тестовый конфигурациооный файл:
(там нет профиля, он храниться на модеме, Router#cellular 0 gsm profile create 3 fixedip.nw chap megafon megafon).
!
! Last configuration change at 10:14:00 UTC Tue Mar 25 2014
version 15.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
!
aaa new-model
!
!
!
!
!
!
!
aaa session-id common
!
memory-size iomem 10
ip auth-proxy max-login-attempts 5
ip admission max-login-attempts 5
!
!
!
!
ip dhcp pool DPOOL
network 192.168.0.0 255.255.255.0
default-router 192.168.0.1
dns-server 8.8.8.8 8.8.4.4
!
!
ip cef
no ipv6 cef
!
!
multilink bundle-name authenticated
chat-script MEGAFON "" "ATD*99*3#" TIMEOUT 30 CONNECT
!
!
!
!
!
!
controller Cellular 0
!
!
!
!
!
interface FastEthernet0
no ip address
spanning-tree portfast
!
interface FastEthernet1
no ip address
spanning-tree portfast
!
interface FastEthernet2
no ip address
spanning-tree portfast
!
interface FastEthernet3
no ip address
spanning-tree portfast
!
interface FastEthernet4
no ip address
duplex auto
speed auto
!
interface Cellular0
description uplink
ip address negotiated
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer in-band
dialer idle-timeout 0
dialer string "*99*3#"
dialer string MEGAFON
dialer-group 1
async mode interactive
ppp chap hostname megafon
ppp chap password 0 megafon
ppp ipcp dns request
!
interface Vlan1
ip address 192.168.0.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
ip nat inside source list NATACL interface Cellular0 overload
ip route 0.0.0.0 0.0.0.0 Cellular0 200
!
ip access-list extended NATACL
permit ip 192.168.0.0 0.0.0.255 any
!
access-list 1 permit any
dialer-list 1 protocol ip list 1
!
!
!
!
control-plane
!
!
!
line con 0
line aux 0
line 3
exec-timeout 0 0
script dialer MEGAFON
modem InOut
no exec
rxspeed 7200000
txspeed 2000000
line vty 0 4
transport input all
!
!
end
Источник: olegcisco.blogspot.ru/2014/03/3g-cisco-881.html
