forwarding performance with releng7 vs 8 vs 9 vs 10 on an Alix box

[Kevin Oberman]

On Fri, Jan 17, 2014 at 1:09 PM, Mike Tancsa <mike at sentex.net> wrote:

> On 1/17/2014 4:03 PM, Kevin Oberman wrote:
> >
> > FreeBSD 8 introduced default support for TSO. You might try turning it
> > off (-tso) if it is enabled on the interfaces involved.
>
> Thanks, these are vr interfaces which do not support TSO.  Also, its
> pure forwarding that seems to be the issue and I dont think TSO enters
> into that ?
>
> vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>         options=8280b<RXCSUM,TXCSUM,VLAN_MTU,WOL_UCAST,WOL_MAGIC,LINKSTATE>
>         ether 00:0d:b9:1c:60:48
>         inet 192.168.xx.xx netmask 0xffffff00 broadcast 192.168.xx.xx
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>         media: Ethernet autoselect (100baseTX <full-duplex>)
>         status: active
>
>
> --
> -------------------
> Mike Tancsa, tel +1 519 651 3400
> Sentex Communications, mike at sentex.net
> Providing Internet services since 1994 www.sentex.net
> Cambridge, Ontario Canada   http://www.tancsa.com/
>

Shouldn't. Better not! That would really break things if a forwarder  were
to re-segment the data. So "never mind".
-- 
R. Kevin Oberman, Network Engineer, Retired
E-mail: rkoberman at gmail.com