What is the maximum udp packet size that can be transmitted?

Posted on 2004-10-14
Last Modified: 2012-06-21
Hi ppl!!

What is the maximum udp packet size that can be transmitted on java? I've read a varying number of sizes.So I would like to actually know for sure. Anybody can help??

Question by:blaze_wk
  • 4
  • 3

Expert Comment

ID: 12309740
It depends on the computer you are using.  The max UDP Packet size is the maximum buffer size.

Author Comment

ID: 12309894
well the maximum send buffer size on my computer is about 100000 bytes but I don't think a udp packet can go until that big. Or do you mean another kind of buffer size?
LVL 14

Expert Comment

by:Tommy Braas
ID: 12309929
Hi blaze_wk,

Actually, the maximum UDP packet size is 64kb (65536 bytes). This is how it is defined in the standard. Usually a packet size of 1500 bytes is the default.


Is Your AD Toolbox Looking More Like a Toybox?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.


Author Comment

ID: 12309958
hey there

ok what if i want to transmit with the biggest udp payload size. IS that possible in java?
LVL 14

Accepted Solution

Tommy Braas earned 500 total points
ID: 12310012
Yes it is, unless the underlying JVM doesn't allow it. However, in that case, you should still be able to specify the maximum size of the UDP packet in Java, and the JVM would chop it up in chunks supported by the JVM.

Author Comment

ID: 12310079
ic u know what the max udp packet size is for a red hat linux 9 wunning j2se 1.4.2?

LVL 14

Expert Comment

by:Tommy Braas
ID: 12310108
Nope, but in this day and age I can't for the life of me expect a JVM not to support the UDP standard. I think you will be safe.
LVL 14

Expert Comment

by:Tommy Braas
ID: 12310128

Thank you much sir! And good luck!!!


Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
firstswap challenge 20 78
fibonacci ten numbers 4 39
MySQL  on Tomcat 8 46
Java Restore security prompts not working 10 13
Java Flight Recorder and Java Mission Control together create a complete tool chain to continuously collect low level and detailed runtime information enabling after-the-fact incident analysis. Java Flight Recorder is a profiling and event collectio…
Introduction This article is the second of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers the basic installation and configuration of the test automation tools used by…
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…
This theoretical tutorial explains exceptions, reasons for exceptions, different categories of exception and exception hierarchy.

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question