CCNA 640-802实验-Topology Lab

LAB QUESTION:

This topology contains 3 routers and 1switch. Complete the topology.
Drag the appropriate device icons to the labeled Device
Drag the appropriate connections to the locations labeled Connections.
Drag the appropriate IP addresses to the locations labeled IP address (Hint: use the given host addresses and Main router information)
To remove a device or connection, drag it away from the topology.
Use information gathered from the Main router to complete the configuration of any additional routers. No passwords are required to access the Main router . The config terminal command has been disabled for the HQ router. The router does not require any configuration.

Configure each additional router with the following
Configure the interfaces with the correct IP address and enable the interfaces.
Set the password to allow console access toconsolepw
Set the password to allow telnet access totelnetpw
Set the password to allow privilege mode access toprivpw
（注意密码）
Note:Becauseroutesare not being added to the configurations, you will not be able to ping through the internetwork.
All devices have cable autosensing capabilities disabled.
All hosts are PC’s

ANSWER:

通过题目可知LAB中包含3个routers和1个Switch.
第一步：拖拽合适的设备到标签设备处。
Router1和Router2肯定是和main router直连的，在考试中可以在main router上show run,the device有Fa0/4和Fa0/2，因此一定是switch.
第二步：拖拽合适的线缆到标签连接处。
1.the main router和Router (2)之间一定是serial link，因为Router (2)的S 0/0指向Main router。
2.很显然了，Router (1)和Main router需使用交叉线缆（crossover cable），用于相同设备间的连接。
3.主机A直连Router (1)的f0/1，也是交叉线缆。
4. router (2)和switch间使用直通线缆连接。
第三步：拖拽合适的IP地址到标签设备（根据给出的主机地址和main router的信息，命令show run）
Host A IP address:192.168.152.129 /28.
Host C IP address:192.168.152.225 /28
即Subnet mask is 255.255.255.240，子网数：2^4-2=14,主机数：2^4-2=14
根据给出的IP和子网掩码求出各子网地址范围：
16 – 31
32 – 47
48 – 63
64 – 79
80 – 95
96 – 111
112 - 127
128 – 143(主机A的IP地址在此范围内，因此Router (1)Fa 0/1地址是192.168.152.142)
144 – 159
160 – 175
176 – 191
192 – 207
208 – 223
224 – 239(主机C的IP地址在此范围内，因此Router (2)Fa 0/0地址是192.168.1.238)
在main router上使用show running-config可以看出其接口的精确IP，然后匹配相同子网，计算出Router(2) S0/0接口的IP地址
同样，根据显示的信息匹配相同子网计算出Router (1) fa 0/0的IP地址。
第四步：在各路由器上配置所计算的正确IP地址，激活接口。
Router (1): Configuration

第五步：设置console和telnet，特权密码。

console和telnet，特权密码的配置与Router1类似，就不一一列出了。

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OK，这个看似复杂的问题就很容易解决了。Good luck forCCNA!