[OpenAFS] not able to contact fileserver over 3g
Mattias Pantzare
pantzer@ludd.ltu.se
Thu, 19 Apr 2018 11:51:01 +0200
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This could be an MTU issue. Something is probably not fragmenting large
packets correctly, or some firewall is filtering to hard. Lowering MTU may
help.
https://supportforums.cisco.com/t5/wan-routing-and-switching/possible-mtu-i=
ssue-when-running-in-3g-failover-on-cisco887-vag/td-p/2573785
On Thu, Apr 19, 2018 at 9:19 AM, Tim Piessens <piessens@icsense.com> wrote:
> Hi all,
>
> we are experiencing a strange issue with our afs servers.
> When people are working outside the office, they can access our
> fileservers over our VPN when the do this using WiFi, when they contact
> over our VPN using a 3/4g mobile data connection it fails.
> We are completely puzzled since the connection is made suing the same VPN=
,
> so except form the physical layer, everything seems the same.
> The afs servers can be ping=E2=80=99ed, all other services work fluently.=
Only the
> caching daemon seems not being able to contact the file servers.
> Clients are macOs machines using the auristor client.
>
> Anybody an idea on the root cause ?
> Any proposal how to further debug this issue ?
>
> Any help is heavily appreciated,
>
> Tim
>
>
> *Dr. Ir. Tim Piessens*
> CTO and Founder
>
> Gaston Geenslaan 14, 3001 Leuven, Belgium
> <https://maps.google.com/?q=3DGaston+Geenslaan+14,+3001+Leuven,+Belgium&e=
ntry=3Dgmail&source=3Dg>
> Tel. +32 16 589 705 | Fax. +32 16 589 720
> www.icsense.com
> <http://www.icsense.com/?utm_source=3Dmailsignature&utm_medium=3Demail&ut=
m_campaign=3Demail>
> | piessens@icsense.com
>
> *"The information contained in this e-mail may be confidential."*
> <http://www.icsense.com>
>
>
>
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<div dir=3D"ltr">This could be an MTU issue. Something is probably not frag=
menting large packets correctly, or some firewall is filtering to hard. Low=
ering MTU may help.<br><br><a href=3D"https://supportforums.cisco.com/t5/wa=
n-routing-and-switching/possible-mtu-issue-when-running-in-3g-failover-on-c=
isco887-vag/td-p/2573785">https://supportforums.cisco.com/t5/wan-routing-an=
d-switching/possible-mtu-issue-when-running-in-3g-failover-on-cisco887-vag/=
td-p/2573785</a></div><div class=3D"gmail_extra"><br><div class=3D"gmail_qu=
ote">On Thu, Apr 19, 2018 at 9:19 AM, Tim Piessens <span dir=3D"ltr"><<a=
href=3D"mailto:piessens@icsense.com" target=3D"_blank">piessens@icsense.co=
m</a>></span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margi=
n:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style=3D"wor=
d-wrap:break-word"><div>Hi all,</div><div><br></div><div>we are experiencin=
g a strange issue with our afs servers.=C2=A0</div><div>When people are wor=
king outside the office, they can access our fileservers over our VPN when =
the do this using WiFi, when they contact over our VPN using a 3/4g mobile =
data connection it fails.=C2=A0</div><div>We are completely puzzled since t=
he connection is made suing the same VPN, so except form the physical layer=
, everything seems the same.</div><div>The afs servers can be ping=E2=80=99=
ed, all other services work fluently. Only the caching daemon seems =C2=A0n=
ot being able to contact the file servers.=C2=A0</div><div>Clients are macO=
s machines using the auristor client.</div><div><br></div><div>Anybody an i=
dea on the root cause ?=C2=A0</div><div>Any proposal how to further debug t=
his issue ?</div><div><br></div><div>Any help is heavily appreciated,</div>=
<div><br></div><div>Tim=C2=A0</div><div><br></div><br><div>
<table style=3D"line-height:18px;margin:20px 0;padding:0px;font-family:Verd=
ana,Arial,Helvetica,sans-serif;font-size:12px;color:#333333" width=3D"600" =
border=3D"0" cellspacing=3D"0" cellpadding=3D"0">
<tbody><tr>
<td valign=3D"top">
<p><strong>Dr. Ir. Tim Piessens</strong><br>
CTO and Founder</p>
<p><a href=3D"https://maps.google.com/?q=3DGaston+Geenslaan+14,+3001+Le=
uven,+Belgium&entry=3Dgmail&source=3Dg">Gaston Geenslaan 14, 3001 L=
euven, Belgium</a><br>
Tel. +32 16 589 705 | Fax. +32 16 589 720<br>
<a href=3D"http://www.icsense.com/?utm_source=3Dmailsignature&u=
tm_medium=3Demail&utm_campaign=3Demail" target=3D"_blank">www.icsense.c=
om</a> | <a href=3D"mailto:piessens@icsense.com" target=3D"_blank">piessens=
@icsense.com</a>=20
</p><p><small><em>"The information contained in this e-mail may be con=
fidential."</em></small>
</p>
</td>
<td width=3D"192" height=3D"" valign=3D"top"><span><a href=3D"http://www.ic=
sense.com" target=3D"_blank"><img border=3D"0"></a></span></td>
</tr>
</tbody></table>
<p>
</p></div>
<br></div></blockquote></div><br></div>
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