需求:
ISP2跑http
其他的跑ISP1
interface FastEthernet0/0 --------假设该端口为ISP 2接入端口
ip address 192.168.1.2 255.255.255.0 --------分配地址
ip nat outside --------指定为NAT Outside端口
!
interface FastEthernet0/1 ---------假设该端口为ISP 1接入端口
ip address 192.168.2.2 255.255.255.0 --------分配地址
ip nat outside --------指定为NAT Outside端口
!
interface FastEthernet1/0 -------假设该端口为内部网络端口
ip address 192.168.3.1 255.255.255.0 --------分配地址
ip nat inside --------指定为NAT Inside端口
ip policy route-map t0 --------在该端口上使用route-map t0进行策略控制
!
ip nat inside source list 101 interface FastEthernet0/0 overload http应用做PAT,匹配101acl
ip nat inside source list 102 interface FastEthernet0/1 overload 其他应用做PAT,匹配102acl
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.2.1 ------静态路由,对Internet的访问通过192.168.2.1(ISP1)链路
ip route 0.0.0.0 0.0.0.0 192.168.1.1 ------静态路由,对Internet的访问通过192.168.1.1(ISP2)链路
no ip http server
静太路由不起很大的作用,因为存在策略路由,主要是set interface要求有显式的去往目的地的路由
!
access-list 101 permit tcp 192.168.3.0 0.0.0.255 any eq 80
access-list 102 deny tcp 192.168.3.0 0.0.0.255 any eq 80
access-list 102 permit ip any any
!
route-map t0 permit 10 ----定义route-map t0,permit序列为10
match ip address 101 ----匹配101ACL的数据
set interface FastEthernet0/0 ----指定出口为Fastethetnet 0/0
!
route-map t0 permit 20 ----定义route-map t0,permit序列为20
match ip address 102 ----匹配102ACL的数据
set interface FastEthernet0/1 ----指定出口为Fastethetnet 0/1
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