路由器各网络接口所直连的网络之间使用直连路由进行通信 。直连路由是在配置完路由器网络接口的IP地址后自动生成的,因此,假如没有对这些接口进行非凡的限制,这些接口所直连的网络之间就可以直接通信 。
由两个或多个路由器互连的网络之间的通信使用非直连路由 。非直连路由是指人工配置的静态路由或通过运行动态路由协议而获得的动态路由 。其中静态路由比动态路由具有更高的可操作性和安全性 。
IP网络已经逐渐成为现代网络的标准,用IP协议组建网络时,必须使用路由设备将各个IP子网互连起来,并且在IP子网间使用路由机制,通过IP网关互连形成层次性的网际网 。
Cisco路由器配置
Cisco2511拨入配置 Cisco2509 CallBack典型配置 Cisco Router之间CallBack典型配置
拨号备份 : 一、DDN设置 二、ROUTERB (CALLER) 三、Hayes modem的设置
Cisco2511拨入配置
version 12.0
service timestamps debug uptime
service timestamps log uptime
service passWord-encryption
service udp-small-servers
service tcp-small-servers
!
hostname dialin_2511_radius
!
aaa new-model
aaa authentication login default radius
aaa authentication login no_radius local
aaa authentication login admin none
aaa authentication enable default enable
aaa authentication ppp default if-needed radius
aaa authorization exec default radius if-authenticated
aaa authorization network default radius
aaa accounting suppress null-username
aaa accounting network default start-stop radius
enable secret 5 XXXXXXXXXXXXXXXXXXXXXXXXX
enable password 7 YYYYYYYYYYYYYY
!
username admin password 7 ZZZZZZZZZZZZZ
ip subnet-zero
ip address-pool local
async-bootp dns-server 192.168.2.4
chat-script factory-default "" "AT&F1&W"
chat-script cisco-default ABORT ERROR "" "AT Z" OK "ATDT T" TIMEOUT 3 0 c CONNECT c
chat-script usr-courier-veverything "" "AT&FS0=1&C1&D2&H1&R2&N14&B1&W"
!
interface Ethernet0
ip address 192.168.2.30 255.255.255.0
!
interface Serial0
no ip address
shutdown
!
interface Serial1
no ip address
shutdown
! interface Group-Async1
ip unnumbered Ethernet0
no ip directed-broadcast
encapsulation ppp
no ip route-cache
no ip mroute-cache
async mode interactive
peer default ip address pool default
no cdp enable
ppp authentication pap chap
group-range 1 16
!
ip local pool default 192.168.2.64 192.168.2.79
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.2.1
!
radius-server host 192.168.2.99 auth-port 1645
acct-port 1646 radius-server key Testing_radius
!
line con 0
session-timeout 10
exec-timeout 0 0
login authentication no_radius
transport preferred none
transport input none
line 1 16
autoselect ppp
modem InOut
transport input all
speed 57600
flowcontrol hardware
line aux 0
transport input all
line vty 0 4
exec-timeout 30 0
login authentication no_radius
!
end
Cisco2509 CallBack典型配置
version 11.3
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router
!
enable password cisco
!
username cisco callback-dialstring "" callback-rotary 1 password 0 cisco
!
chat-script cb "" "ATDTT" TIMEOUT 60 CONNECT
!
!
!
interface Ethernet0
ip address 192.168.1.201 255.255.255.0
!
interface Serial0
no ip address
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