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Date: Tue, 15 Sep 1998 12:15:52 -0700 (PDT)
From: "Jan B. Koum " <jkb@best.com>
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To: Bengt Gorden <bengan@sunet.se>
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Subject: Re: MTU Size  & Connection reset by.. & Lost Input channel
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	And to beat around dead horse:

% ifconfig -a
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
                                                        ^^^^^^^^
        inet 192.168.1.2 netmask 0xffffff00 broadcast 192.168.1.255
        ether 00:60:08:15:bc:65 
        media: autoselect (10baseT/UTP <half-duplex>)
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
                                               ^^^^^^^^^
	ifconfig command will let you know MTU for your interfaces.

-- Yan

I don't have the password .... + Jan Koum 
But the path is chainlinked .. | Spelled Jan, pronounced Yan. There. 
So if you've got the time .... | Web: http://www.best.com/~jkb
Set the tone to sync ......... + OS: http://www.FreeBSD.org

On Tue, 15 Sep 1998, Bengt Gorden wrote:

>On Sat, Sep 12, 1998 at 02:21:36PM +1000, Brett Gray wrote:
>> 
>> b) I read something on the net about MTU size.  What is MTU (I cant find
>> any
>> explaination of the term..  just references to it) Is the above problem
>> likely to be something to do with MTU size and where can I adjust this
>> setting in FreeBSD
>
>MTU = Maximum Transmission Unit
>
>It's the largest link layer datagram that can be used for a particular
>network. If you try to send a IP datagram that is larger than the MTU
>it's going to be fragmented. Different types of networks have
>different MTU:s. Here are a few of them:
>
>FDDI              4352
>Ethernet          1500
>IEEE 802.3/802.2  1492
>X.25               576 (Ah, there we have an ugly one)
>
>-- 
>
>/Bengan
>
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