SOS - How to find out MTU on Windows

T

TJ

Hi,

Could some one please tell me how to find out MTU on Windows 2003?
'ipconfig /all' doesn't show that information.

Also, how to find out "path MTU", from one host to the other?

Thanks a lot!

TJ
 
B

Bob Eager

Could some one please tell me how to find out MTU on Windows 2003?
'ipconfig /all' doesn't show that information.

Also, how to find out "path MTU", from one host to the other?

There's not a lot of point cross-posting this to an OS/2 newsgroup, is
there? OS/2 is a completely different, and arguably superior, system
that has the great advantage of not coming from Microsoft. Most of us
don't use Windows at all.
 
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Since I found this thread first during my quest to find a way to display (as opposed to derive) an IP interface's MTU, I figured I'd feed back the answer I found elsewhere.

First, make sure the service called "Routing and Remote Access" (aka. "RemoteAccess") is started. It doesn't have to be started automatically; just running before you type the next command.

In Windows XP, type the following command at the DOS/Command prompt:

C:\>netsh interface ip show interface

The output will show you all kinds of cool things, including:

Index: 3
User-friendly Name: Local Area Connection
GUID Name: {89821586-54FD-44ED-8AD3-3E03A8CB9414}
Type: Ethernet
MTU: 1500
Speed: 100000000
Physical Address: 00-24-7E-DA-36-A1
Admin Status: Up
Operational Status: Operational
Last Change: 1250607780
In Octets: 165402429
In Unicast Packets: 158190
In Non-unicast Packets: 33207
In Packets Discarded: 0
In Erroneous Packets: 0
In Unknown Protocol Packets: 0
Out Octets: 19486587
Out Unicast Packets: 115312
Out Non-unicast Packets: 2197
Out Packets Discarded: 0
Out Erroneous Packets: 0
Output Queue Length: 0
Description: Intel(R) 82567LM Gigabit Network Connection
- Packet Scheduler Miniport

For Vista, I've been told that the command is now 'netsh interface ipv4 show subinterface', but I have no proof of that.

– Dave
 
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