MTU: Difference between revisions

MTU (view source)

41 bytes added , 19 November 2021

tt

editor

698

edits

Revision as of 20:59, 13 November 2017 (view source) AA-Andrew (talk \| contribs) m (→‎Explanation of the ping options:) ← Older edit		Revision as of 17:51, 19 November 2021 (view source) Reedy (talk \| contribs) (tt) Newer edit →
(2 intermediate revisions by 2 users not shown)
For example: [[File:Firebrick-1500MTU-ping.png\|200px\|thumb\|a 1500 ping on FireBrick]] On Linux: ==Explanation of the ping options:== '''-c1 / -n 1''' This is optional, it simply tells ping just to send a single ping '''-M do / -f / -D''' The important option! This means don't fragment the ping packet - we don't want the ping split into multiple packets when testing MTU! ''' -s 1472 / -l 1472''' The payload size. When setting size in ping, the size is the payload size - not the full packet size. '''The full packet size is''' <~~syntaxhighlight inline~~tt> payload (1472) + IP header (20) + ICMP header (8) </~~syntaxhighlight~~tt>, so this is 1500 in total! ==Two quick examples==