Difference between revisions of "MTU"
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Change configuration on Linux: | Change configuration on Linux: | ||
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<code>[[ip link]] set dev eth0 [[mtu]] 9000</code> ([[Jumbo frames]]) | <code>[[ip link]] set dev eth0 [[mtu]] 9000</code> ([[Jumbo frames]]) | ||
Revision as of 10:27, 15 October 2021
wikipedia:Maximum transmission unit (MTU)
- Cisco IOS:
show system mtu
Change configuration on Linux:
ip link set dev eth0 mtu 9000 (Jumbo frames)
ifconfig -a | grep mtu
ifconfig -a | grep mtu eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9001
ping -M do -s 9000 <some_ip_address>
Select Path MTU Discovery strategy. hint may be either do (prohibit fragmentation, even local one), want (do PMTU discovery, fragment locally when packet size is large), or don't (do not set DF flag).
netsh interface ipv4 show interfaces
Related terms
- Jumbo frames
- debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
- Path MTU Discovery (PMTUD)
- sysctl:
net.ipv4.tcp_mtu_probing - WireGuard: https://wiki.archlinux.org/index.php/WireGuard#Low_MTU
iperf: -M, --msstun-mtuin/etc/openvpn/server.conf
See also
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