鲁达 Packet Tracer 是 Cisco 公司针对 CCNA 认证开发的一个用来设计、配置和故障排除网络的模拟软件。Packer Tracer 模拟器软件比 Boson 功能强大，比 Dynamips 操作简单，非常适合网络设备初学者使用。
学习任务
1、安装 Packer Tracer；2、利用一台型号为 2960 的交换机将 2pc 机互连组建一个小型局域网；3、分别设置 pc 机的 ip 地址；4、验证 pc 机间可以互通。
实验设备
Switch_2960 1 台；PC 2 台；直连线
PC1 IP：192.168.1.2 Submask：255.255.255.0 Gateway：192.168.1.1PC2 IP：192.168.1.3 Submask：255.255.255.0 Gateway：192.168.1.1 PC1 ping PC2 Reply PC2 ping PC1 Reply PC2 ping Gateway Timeout 实战演练
PC1 ipconfig IP Address......................: 192.168.1.2 Subnet Mask.....................: 255.255.255.0 Default Gateway.................: 192.168.1.1 ping 192.168.1.3 Pinging 192.168.1.3 with 32 bytes of data: Reply from 192.168.1.3: bytes=32 time=50ms TTL=128 Reply from 192.168.1.3: bytes=32 time=8ms TTL=128 Reply from 192.168.1.3: bytes=32 time=10ms TTL=128 Reply from 192.168.1.3: bytes=32 time=11ms TTL=128 Ping statistics for 192.168.1.3: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 8ms, Maximum = 50ms, Average = 19ms PC2 ipconfig IP Address......................: 192.168.1.3 Subnet Mask.....................: 255.255.255.0 Default Gateway.................: 192.168.1.1 ping 192.168.1.2 Pinging 192.168.1.2 with 32 bytes of data: Reply from 192.168.1.2: bytes=32 time=11ms TTL=128 Reply from 192.168.1.2: bytes=32 time=10ms TTL=128 Reply from 192.168.1.2: bytes=32 time=11ms TTL=128 Reply from 192.168.1.2: bytes=32 time=11ms TTL=128 Ping statistics for 192.168.1.2: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 10ms, Maximum = 11ms, Average = 10ms ping 192.168.1.1 Pinging 192.168.1.1 with 32 bytes of data: Request timed out.