有人会用ping命令算出路由器的数目吗/

Posted 2023-04-16

参考技术A 你先ping 127.0.0.1，看看TTL值是多少，然后ping你要看的地址，看看TTL值，用第一个TTL值减去第二个TTL值就是路由器的数目 参考技术B 其实你看TTL去数路由器的数目这个是不准确的~~~为什么呢？每个系统默认的TTL值是不一样的，LINUX、UNIX、WINDOWS的默认TTL值都是不一样的，有128、64、256的…………如果你不知道对端使用的是什么系统，那么减过来的TTL值你都不知道他是以那个数为基准的…………比方说对端是WINDOWS，他是从128起步的，那么过3跳减为125，如果你不知道对端是WINDOWS的系统，那么你说到底是经过了3跳还是经过了131跳啊？ 我建议你使用tracert来跟踪路由，那么你就看的很清楚过了几跳。

ping命令总结

1.1 功能说明

发送ICMP包到网络主机

1.2 语法格式

ping [参数] [主机名或IP地址]

参数	说明	简解
-v	Verbose output.	详细输出
-i	interval	间隔的秒数
-c	count	数目，在发送指定数目的包后停止
-t	Set the IP Time to Live.	存活数值：设置存活数值TTL的大小
-s	packetsize	字节数：指定发送的数据字节数

1.3 实践操作

实例1-1  ping指定次数5次

命令：ping –c 5 192.168.137.1

代码

[[email protected] ~]# ping -c 5 192.168.137.1

PING 192.168.137.1 (192.168.137.1) 56(84) bytes ofdata.

64 bytes from 192.168.137.1: icmp_seq=1 ttl=64time=2.01 ms

64 bytes from 192.168.137.1: icmp_seq=2 ttl=64time=1.07 ms

64 bytes from 192.168.137.1: icmp_seq=3 ttl=64time=0.485 ms

64 bytes from 192.168.137.1: icmp_seq=4 ttl=64time=0.397 ms

64 bytes from 192.168.137.1: icmp_seq=5 ttl=64time=0.760 ms

 

--- 192.168.137.1 ping statistics ---

5 packets transmitted, 5 received, 0% packet loss,time 4006ms

rtt min/avg/max/mdev = 0.397/0.944/2.012/0.584 ms

 

实例1-2  时间间隔0.5秒和次数5

命令：ping –i 0.5–c 5 192.168.137.1

代码

[[email protected] ~]# ping -i 0.5 -c 5 192.168.137.1

PING 192.168.137.1 (192.168.137.1) 56(84) bytes ofdata.

64 bytes from 192.168.137.1: icmp_seq=1 ttl=64time=0.364 ms

64 bytes from 192.168.137.1: icmp_seq=2 ttl=64time=0.588 ms

64 bytes from 192.168.137.1: icmp_seq=3 ttl=64time=0.496 ms

64 bytes from 192.168.137.1: icmp_seq=4 ttl=64time=0.486 ms

64 bytes from 192.168.137.1: icmp_seq=5 ttl=64time=0.490 ms

 

--- 192.168.137.1 ping statistics ---

5 packets transmitted, 5 received, 0% packet loss,time 2003ms

rtt min/avg/max/mdev = 0.364/0.484/0.588/0.076 ms

 

实例1-3   时间间隔0.5秒和次数5，包大小为1024

命令：ping –i 0.5–c 5 –s 1024 192.168.137.1

代码

[[email protected] ~]# ping -i 0.5 -c 5 -s 1024192.168.137.1

PING 192.168.137.1 (192.168.137.1) 1024(1052) bytesof data.

1032 bytes from 192.168.137.1: icmp_seq=1 ttl=64time=0.561 ms

1032 bytes from 192.168.137.1: icmp_seq=2 ttl=64time=0.759 ms

1032 bytes from 192.168.137.1: icmp_seq=3 ttl=64time=0.447 ms

1032 bytes from 192.168.137.1: icmp_seq=4 ttl=64time=0.375 ms

1032 bytes from 192.168.137.1: icmp_seq=5 ttl=64time=0.525 ms

 

--- 192.168.137.1 ping statistics ---

5 packets transmitted, 5 received, 0% packet loss,time 2003ms

rtt min/avg/max/mdev = 0.375/0.533/0.759/0.131 ms

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