TCP/IP 笔记 7 Ping

lenovo-myc@lenovomyc-Lenovo-Product:~$ ping www.baidu.com
PING www.a.shifen.com (123.125.65.82) () bytes of data.　　　　这句出现前的延时，为DNS对域名的解析时间
 bytes from 123.125.65.82: icmp_seq= ttl= time=2.60 ms　　　　这句time如果较长，可能是发送ARP请求和接受ARP应答所花的时间
 bytes from 123.125.65.82: icmp_seq= ttl= time=3.36 ms
 bytes from 123.125.65.82: icmp_seq= ttl= time=2.38 ms
 bytes from 123.125.65.82: icmp_seq= ttl= time=2.75 ms
 bytes from 123.125.65.82: icmp_seq= ttl= time=3.64 ms
^C
--- www.a.shifen.com ping statistics ---
 packets transmitted,  received, % packet loss, time 4006ms
rtt min/avg/max/mdev = 2.382/2.950/3.647/0.480 ms

lenovo-myc@lenovomyc-Lenovo-Product:~$ ping 123.125.65.78
PING 123.125.65.78 (123.125.65.78) () bytes of data.
 bytes from 123.125.65.78: icmp_seq= ttl= time=2.45 ms
 bytes from 123.125.65.78: icmp_seq= ttl= time=2.35 ms
 bytes from 123.125.65.78: icmp_seq= ttl= time=2.19 ms
 bytes from 123.125.65.78: icmp_seq= ttl= time=2.94 ms
 bytes from 123.125.65.78: icmp_seq= ttl= time=2.59 ms
 bytes from 123.125.65.78: icmp_seq= ttl= time=2.71 ms
 bytes from 123.125.65.78: icmp_seq= ttl= time=2.57 ms
^C
--- 123.125.65.78 ping statistics ---
 packets transmitted,  received, % packet loss, time 6008ms
rtt min/avg/max/mdev = 2.193/2.547/2.947/0.232 ms

ping -s packetsize 指定数据包大小，默认为56

-s packetsize
              Specifies  the  number of data bytes to be sent.  The default is
              56, which translates into 64 ICMP data bytes when combined  with
              the 8 bytes of ICMP header data.

lenovo-myc@lenovomyc-Lenovo-Product:~$ ping -s  www.baidu.com
PING www.a.shifen.com (220.181.112.244) () bytes of data.
 bytes from 220.181.112.244: icmp_seq= ttl=
 bytes from 220.181.112.244: icmp_seq= ttl=
 bytes from 220.181.112.244: icmp_seq= ttl=
 bytes from 220.181.112.244: icmp_seq= ttl=
 bytes from 220.181.112.244: icmp_seq= ttl=
^C
--- www.a.shifen.com ping statistics ---
 packets transmitted,  received, % packet loss, time 5006ms

查看中间路由。。。没找到可以测的网址

lenovo-myc@lenovomyc-Lenovo-Product:~$ ping -R www.baidu.com
PING www.a.shifen.com (220.181.111.188) () bytes of data.
 bytes from 220.181.111.188: icmp_seq= ttl= time= ms
NOP
RR:     220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188

 bytes from 220.181.111.188: icmp_seq= ttl= time= ms
NOP
RR:     220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188

 bytes from 220.181.111.188: icmp_seq= ttl= time= ms
NOP
RR:     220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188

 bytes from 220.181.111.188: icmp_seq= ttl= time= ms
NOP
RR:     220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188
    220.181.111.188

^C
--- www.a.shifen.com ping statistics ---
 packets transmitted,  received, % packet loss, time 4006ms
rtt min/avg/max/mdev = 176.328/181.574/186.643/4.214 ms

ping同一个网段

lenovo-myc@lenovomyc-Lenovo-Product:~$ ping -R 10.100.156.2
PING 10.100.156.2 (10.100.156.2) () bytes of data.
 bytes from 10.100.156.2: icmp_seq= ttl= time=2.30 ms
NOP
RR:     10.100.156.2
    10.100.156.2
    10.100.156.2
    10.100.156.2

 bytes from 10.100.156.2: icmp_seq= ttl= time=2.53 ms
NOP    (same route)
 bytes from 10.100.156.2: icmp_seq= ttl= time=1.11 ms
NOP    (same route)
 bytes from 10.100.156.2: icmp_seq= ttl= time=4.45 ms
NOP    (same route)
^C
--- 10.100.156.2 ping statistics ---
 packets transmitted,  received, % packet loss, time 4005ms
rtt min/avg/max/mdev = 1.110/2.602/4.459/1.200 ms