[AusNOG] TPG EFM - low MTU

[Bruce Forster]

Hi Noggers,

Ahh i found my issue.... Cheers for the help! feel silly posting should of
seen this!
For those playing at home i seem to be picking up the route for the lac via
another peer and i found a low mtu in the path!




On Mon, Jun 23, 2014 at 3:26 PM, McDonald Richards <
McDonald.Richards at vocus.com.au> wrote:

>  You need to be able to hit a LAC at 1540 bytes from your LNS if you
> don't want to be fragmenting clients. Add another 8 bytes for PPPOE…
>
>  Macca
>
>
>   From: Bruce Forster <bruce at tubes.net.au>
> Date: Monday, 23 June 2014 3:20 PM
> To: "ausnog at ausnog.net" <ausnog at ausnog.net>
> Subject: [AusNOG] TPG EFM - low MTU
>
>     Hi Noggers,
>
>  I have a strange issue seems to be isolated to VIC LAC's
>
>  Some session are coming up at MTU 1476.
>
>  I did managed to clear a l2tp tun and the session came back via another
> LAC at 1500.
>
>  These are the ones i have had problems with: TPGVICLAC-6e / TPGVICLAC-5e
>
>  To get around it iv set mtu on the dialer to match and used a
> mss-adjust...
>
>  I can ping to the LAC's IP at 1500 with no issue.
>
> --
> Regards,
>
> Bruce
>



-- 
Regards,

Bruce
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