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This article mainly shows you "how to view mtu in linux", the content is easy to understand, clear, hope to help you solve your doubts, let the editor lead you to study and learn "how to view mtu in linux" this article.

Most network devices are 1500. If the MTU of the local machine is larger than the MTU of the gateway, the large packets will be taken apart and transmitted, which will produce a lot of packet fragments, increase the packet loss rate and slow down the network speed. If the local MTU is set to be smaller or the same as the gateway MTU, packet loss can be reduced.

Test (1472 + 8 (ICMP echo request and echo reply message format length) + 20 (IP header) = 1500)

$ping-c 2-M do-s 1472 192.168.0.6 output

The code is as follows:

PING 192.168.0.6 (192.168.0.6) 1472 (1500) bytes of data.

Bytes from 192.168.0.6: icmp_seq=1 ttl=127 time=1.06 ms

Bytes from 192.168.0.6: icmp_seq=2 ttl=127 time=1.06 ms

-192.168.0.6 ping statistics-

Packets transmitted, 2 received, 0 packet loss, time 1002ms

Rtt min/avg/max/mdev = 1.060max 1.062max 1.064amp 0.002 ms

Check the mtu of this computer

$netstat-I output

Kernel Interface table

Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg

Eth0 1500 0 82879 000 69000 000 BMRU

Lo 16436 0 84 0 0 0 84 0 0 0 LRU

Set up

# set the mtu of this machine

Sudo ifconfig eth0 mtu 1472

# View the results of the settings

$netstat-I

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