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为什么通过接口名称 ping 不通，而通过接口地址 ping 通？

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为什么通过接口名称 ping 不通，而通过接口地址 ping 通？

我使用 USB 以太网适配器，该适配器eth1在目标中被识别。然后我设置一个IP以eth1使用该命令

ifconfig eth1 YY.YY.YY.YY

当我使用

ping -I eth1 XX.XX.XX.XX

输出 ：

mx6q:~# ping -I eth1 192.168.2.35
PING 192.168.2.35 (192.168.2.35): 56 data bytes
^C
--- 192.168.2.35 ping statistics --- 3 packets transmitted, 0 packets received, 100% packet loss

它不起作用，而当我使用时

ping -I YY.YY.YY.YY XX.XX.XX.XX

输出 ：

mx6q:~# ping -I 192.168.2.99 192.168.2.35
PING 192.168.2.35 (192.168.2.35) from 192.168.2.99: 56 data bytes
64 bytes from 192.168.2.35: seq=0 ttl=64 time=0.765 ms
64 bytes from 192.168.2.35: seq=1 ttl=64 time=0.437 ms
^C
--- 192.168.2.35 ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss

它是在职的。

如何通过接口名称 ping 通？

IF配置

eth1      Link encap:Ethernet  HWaddr 00:07:40:53:dd:1b  
          inet addr:192.168.2.99  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::207:40ff:fe53:dd1b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:24 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
      RX bytes:4754 (4.6 KiB)  TX bytes:1376 (1.3 KiB)

答案1

确保您的计算机上存在接口名称。通过执行ifconfig或ip addr show或ip link show命令进行检查。

您还可以使用ip route show 和traceroute -i命令进行一些故障排除。

它的工作原理如下图所示：

[iahmad@ijaz-cms ~]$ ping -I enp0s25 www.google.com

PING www.google.com (172.217.18.100) from 137.138.52.207 enp0s25: 56(84) bytes of data.
64 bytes from zrh04s05-in-f4.1e100.net (172.217.18.100): icmp_seq=1 ttl=54 time=4.88 ms
64 bytes from zrh04s05-in-f4.1e100.net (172.217.18.100): icmp_seq=2 ttl=54 time=4.97 ms
64 bytes from zrh04s05-in-f4.1e100.net (172.217.18.100): icmp_seq=3 ttl=54 time=5.01 ms
^C
--- www.google.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 4.885/4.958/5.019/0.055 ms


[iahmad@ijaz-cms ~]$ ping -I 137.138.52.207 www.google.com

PING www.google.com (172.217.18.100) from 137.138.52.207 : 56(84) bytes of data.
64 bytes from zrh04s05-in-f4.1e100.net (172.217.18.100): icmp_seq=1 ttl=54 time=4.98 ms
64 bytes from zrh04s05-in-f4.1e100.net (172.217.18.100): icmp_seq=2 ttl=54 time=4.93 ms
64 bytes from zrh04s05-in-f4.1e100.net (172.217.18.100): icmp_seq=3 ttl=54 time=4.96 ms
64 bytes from zrh04s05-in-f4.1e100.net (172.217.18.100): icmp_seq=4 ttl=54 time=4.98 ms
^C
--- www.google.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3003ms
rtt min/avg/max/mdev = 4.939/4.966/4.983/0.017 ms

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