vlan limits on e1000?

[Mike Tancsa]

On 12/6/2010 8:18 PM, Mihai-Catalin Salgau wrote:
> Hello Freebsd-net,
> 
>   I have two dual port NICs, one Broadcom(bce0,bce1) and one Intel(em0,em1), on FreeBSD 8-stable
>   (about two weeks old) with a DHCP server running.

Hi,
	There were a bunch of changes to RELENG_8's em driver a week ago.
Perhaps update to that first.  But what sort of em nics do you have ?
pciconf -lvc will show it.  I have a number of boxes with 20 or more

 ifconfig | grep ^vlan | wc
      20     120    1562

Most of which are pcie based, or onboard 82574L types.

	---Mike

>   I've been successfully using a large number of vlans over bce1,em0 and em1 with iSCSI,
>   but wanted to switch to AoE(ata over ethernet). I've set vlandevs by round-robin, and got
>   vlan1 on bce0, vlan2 on em0, vlan3 on em1, vlan4 on bce0....vlan12 on em1. I've binded
>   net/vblade instances to each interface, but the problem I'm facing now is that while
>   vlans 1-10 are working properly, vlans 11 and 12 won't see any traffic unless the interface is
>   in promiscuous mode. I noticed that while trying to attach tcpdump and saw the thing instantly work.
>   I've had no problems with iSCSI over the same setup, and dhcp packets are getting trough properly.
>   I've moved those last two vlans to bce0 and they work ok, but I'm a bit locked on why this is happening.
>   Are there any known limitations on vlans on e1000?
>   
> 
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