BGE & VLAN stranges

[Will Saxon]

> -----Original Message-----
> From: Boris Kovalenko [mailto:boris at tagnet.ru]
> Sent: Friday, August 01, 2003 2:23 AM
> To: freebsd-stable at 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