关于GPRS APN-GRE隧道配置摘要

本文是一个实际应用案例中关于APN-GRE隧道建立的说明，该配置基于Cisco 12012路由器完成，采用TFTP。大家可以看看，以后可能会碰到类似应用！欢迎讨论！

Using 990 out of 29688 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname 2600
!
enable secret 5 $1$NHEY$zALY8Kvp8r7tbcj/
enable password ×××× /APN号/
!
ip subnet-zero
!
!
!
!
!
!
interface Tunnel1            /创建隧道1/

ip address 10.10.10.46 255.255.255.252     /隧道IP/（GPRS DTU访问的）
tunnel source 218.*.*.*          /源地址/
tunnel destination 211.*.*.41     /目标地址/
!
interface FastEthernet0/0          /内部私网IP/
ip address 192.1.3.100 255.255.255.0
no ip mroute-cache
speed auto
full-duplex
!
interface FastEthernet0/1      /ISP光纤 IP/
ip address 218.*.*.* 255.255.255.0
ip access-group 101 in
ip access-group 101 out
no ip mroute-cache
duplex auto
speed auto
!
ip classless
ip route 0.0.0.0 0.0.0.0 218.*.*.69     /访问internet
网段通过ISP的网关过去/
ip route 10.1.12.0 255.255.254.0 Tunnel1     /默认路由通过
隧道1出去/
no ip http server
ip pim bidir-enable
!
!
access-list 101 permit tcp any any
access-list 101 permit ip any any
access-list 101 permit icmp any any
tftp-server no
!
line con 0
line aux 0
line vty 0 4
password ×××× /APN号/
login
!
!
end