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This is the support site for Andrews & Arnold Ltd, a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!

MTU: Difference between revisions

41 bytes added ,  19 November 2021
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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 inlinett> payload (1472) + IP header (20) + ICMP header (8) </syntaxhighlighttt>, so this is 1500 in total!
 
==Two quick examples==
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