一.测试拓扑:
二.基本思路和笔试题目:
A.基本思路:
通过使用NAT extendable参数,使得内部一个地址能在不同接口以不同地址NAT出去,否则内部一个地址只能配静态NAT一次。
B.笔试题目:
An internal DNS server requires a NAT on a Cisco IOS router that is dual-homed to separate ISPs using distinct CIDR blocks. Which NAT capability is required to allow hosts in each CIDR block to contact the DNS server via one translated address?
答案:NAT extendable
三.基本配置:
A.R1路由器:
interface Ethernet0/0
ip address 202.100.1.2 255.255.255.0
no shut
B.R2路由器:
interface Ethernet0/0
ip address 61.1.1.2 255.255.255.0
no shut
C.R3路由器:
interface Ethernet0/0
ip address 10.1.1.1 255.255.255.0
ip nat inside
no shut
interface Ethernet0/1
ip address 202.100.1.1 255.255.255.0
ip nat outside
no shut
interface Ethernet0/2
ip address 61.128.1.1 255.255.255.0
ip nat outside
no shut
时间: 2025-01-21 05:43:00