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Date:      Fri, 1 Aug 2003 09:02:31 -0400
From:      "Will Saxon" <WillS@housing.ufl.edu>
To:        "Boris Kovalenko" <boris@tagnet.ru>, <freebsd-stable@freebsd.org>
Subject:   RE: BGE & VLAN stranges
Message-ID:  <0E972CEE334BFE4291CD07E056C76ED8DB3095@bragi.housing.ufl.edu>

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> -----Original Message-----
> From: Boris Kovalenko [mailto:boris@tagnet.ru]
> Sent: Friday, August 01, 2003 2:23 AM
> To: freebsd-stable@freebsd.org
> Subject: BGE & VLAN stranges
>=20
>=20
> Hello!
>=20
>   I have Compaq DL360G2 with Broadcom BCM5701 Gigabit Ethernet and=20
> FreeBSD 5.1R installed. There are no problems if I use bge as usual=20
> network card, but when I try to use 802.1Q vlans, I can't=20
> receive (only=20
> receive, sending is ok) packets more then 1456 bytes! What is the=20
> problem? BGE driver, VLAN driver or my network configuration?

Boris,

This sounds normal - your vlan probably has a max MTU of 1464 bytes (one =
of the ethernet standards uses this instead of 1500 I think). If you =
want to transmit larger frames, you have to up the MTU on your adapter =
and on the switch somehow. I think this is referred to as 'jumbo =
frames.'

If you set the adapter MTU to 1464 you should not have problems sending =
and receiving, your packets will just get fragmented.

-Will



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