Re: trunk(4), VLANs and MTU problems

2008-11-07 Thread Christian Weisgerber
Johan Strvm <[EMAIL PROTECTED]> wrote: > Back to the vlan/em thingy, if I use a vlan direct on top of the em > interface (without trunk) I actually get a 1500b MTU (thanks Johan > Fredin!).. > This would indicate that the em interface actually supports oversized > MTU frames, Of course it d

Re: trunk(4), VLANs and MTU problems

2008-11-07 Thread Johan Ström
On Nov 7, 2008, at 2:40 AM, Stuart Henderson wrote: On 2008-11-06, Johan Strvm <[EMAIL PROTECTED]> wrote: Anyone know how common this problem with blocked ICMP packets is? Idiot firewall and router admins do it the world over. If you can work out who's filtering ICMP, you can attempt to appl

Re: trunk(4), VLANs and MTU problems

2008-11-06 Thread Stuart Henderson
On 2008-11-06, Johan Strvm <[EMAIL PROTECTED]> wrote: > Anyone know how common this problem with blocked ICMP packets is? Idiot firewall and router admins do it the world over. If you can work out who's filtering ICMP, you can attempt to apply a LART, but experience shows this is rarely successfu

Re: trunk(4), VLANs and MTU problems

2008-11-06 Thread Johan Ström
Okay, I've done some reading up on the code. It seems the em driver (in 4.4) have its HW VLAN tagging capability disabled, and thus I cannot use that. Seems some changes have been commited since, I tried (without much hope of it working :P) to backport this into 4.4, but failed totally as expected

trunk(4), VLANs and MTU problems

2008-11-04 Thread Johan Ström
Hi list I've just deployed two redundant OpenBSD 4.4's as main gateways for a network, and all in all its working great, as expected with OpenBSD :) Each box (HP DL320) have one Intel Quad GigE adapter each (82571EB), connected to a HP 2810-48 GigE switch. em0 and em1 are trunk0, and runnin