Date: Fri, 01 Aug 2003 20:24:12 +0600 From: Boris Kovalenko <boris@tagnet.ru> To: Will Saxon <WillS@housing.ufl.edu>, freebsd-stable@freebsd.org Subject: Re: BGE & VLAN stranges Message-ID: <3F2A780C.9050409@tagnet.ru> In-Reply-To: <0E972CEE334BFE4291CD07E056C76ED8DB3095@bragi.housing.ufl.edu> References: <0E972CEE334BFE4291CD07E056C76ED8DB3095@bragi.housing.ufl.edu>
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Will Saxon wrote:
Hello!
Have checked both MTU on Catalyst 2950 and BGE interface. Both are
1500. Also, I have no problems with 1500 MTU on FreeBSD 4.8R and FXP
driver.
Yours truly,
Boris
>>-----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
>>
>>
>>Hello!
>>
>> I have Compaq DL360G2 with Broadcom BCM5701 Gigabit Ethernet and
>>FreeBSD 5.1R installed. There are no problems if I use bge as usual
>>network card, but when I try to use 802.1Q vlans, I can't
>>receive (only
>>receive, sending is ok) packets more then 1456 bytes! What is the
>>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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