[OpenAFS] best way to debug windows 1.7.11 cache/rx/NAT problems?

[Brandon Allbery]

--f46d044797779a183a04bf8b8bc6
Content-Type: text/plain; charset=UTF-8

On Tue, May 8, 2012 at 2:27 PM, Derrick Brashear <shadow@gmail.com> wrote:

> the surprising thing is NAT ping should keep the port open unless
> 1) the timeout interval is aggressively short, like, 20 seconds.
> 2) there's a hard timeout on NAT at least for UDP where regardless of
> use, you lose your timeout.
>

3) your NAT device has a very small table for UDP mappings, which at least
some of the commercial boxes do; overflowing will cause mappings to be
lost, typically in LRU fashion.

-- 
brandon s allbery                                      allbery.b@gmail.com
wandering unix systems administrator (available)     (412) 475-9364 vm/sms

--f46d044797779a183a04bf8b8bc6
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">On Tue, May 8, 2012 at 2:27 PM, Derrick Brashear <span dir=
=3D"ltr">&lt;<a href=3D"mailto:shadow@gmail.com" target=3D"_blank">shadow@g=
mail.com</a>&gt;</span> wrote:<br><div class=3D"gmail_quote"><blockquote cl=
ass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;p=
adding-left:1ex">
<div class=3D"HOEnZb"><div class=3D"h5">the surprising thing is NAT ping sh=
ould keep the port open unless</div></div>
1) the timeout interval is aggressively short, like, 20 seconds.<br>
2) there&#39;s a hard timeout on NAT at least for UDP where regardless of<b=
r>
use, you lose your timeout.<br></blockquote><div><br></div><div>3) your NAT=
 device has a very small table for UDP mappings, which at least some of the=
 commercial boxes do; overflowing will cause mappings to be lost, typically=
 in LRU fashion.</div>
<div><br></div></div>-- <br>brandon s allbery =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"mailto:allbery.b@gmail.com" targe=
t=3D"_blank">allbery.b@gmail.com</a><br>wandering unix systems administrato=
r (available) =C2=A0 =C2=A0 (412) 475-9364 vm/sms<br>
<br>
</div>

--f46d044797779a183a04bf8b8bc6--