[U-Boot-Users] U-boot suppoorts VPN?

[U-Boot-Users] U-boot suppoorts VPN?

[lauren73]

I am working on a project. And I need to download the kernel from another board. Because there are more than switch between 2 CPUs, VPN is needed to make tftp work. Some guy told me that u-boot supports VPN, but need to do some configuration. I did read the README file, didn't find anything about VPN. Any ideas? comments?

Thanks
--
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http://www.nabble.com/U-boot-suppoorts-VPN--t639481.html#a1700773
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[U-Boot-Users] U-boot suppoorts VPN?

[Richard Klingler]

lauren73 (sent by Nabble.com) wrote:
> I am working on a project. And I need to download the kernel from 
> another board. Because there are more than switch between 2 CPUs, VPN is 
> needed to make tftp work. Some guy told me that u-boot supports VPN, but 
> need to do some configuration. I did read the README file, didn't find 
> anything about VPN. Any ideas? comments?

VPN is not needed for UDP at all (o;

Otherwise all Cisco/Juniper/Nortel boxes must run some sort of
VPN software to download new configs or update images (o;

Okay..junos uses ftp...


best regards
rick

[U-Boot-Users] U-boot suppoorts VPN?

[Pantelis Antoniou]

On Tuesday 29 November 2005 18:33, Richard Klingler wrote:
> lauren73 (sent by Nabble.com) wrote:
> > I am working on a project. And I need to download the kernel from 
> > another board. Because there are more than switch between 2 CPUs, VPN is 
> > needed to make tftp work. Some guy told me that u-boot supports VPN, but 
> > need to do some configuration. I did read the README file, didn't find 
> > anything about VPN. Any ideas? comments?
> 
> VPN is not needed for UDP at all (o;
> 
> Otherwise all Cisco/Juniper/Nortel boxes must run some sort of
> VPN software to download new configs or update images (o;
> 
> Okay..junos uses ftp...
> 
> 
> best regards
> rick
> 

VPN no. VLAN yes.

Which is it?

Regards

Pantelis

[U-Boot-Users] U-boot suppoorts VPN?

[Wolfgang Denk]

In message <200511291849.45533.pantelis@embeddedalley.com> you wrote:
>
> > VPN is not needed for UDP at all (o;
...
> VPN no. VLAN yes.

VLAN *may* be used. But it is not necessary for a plain TFTP download
either.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
All these theories, diverse as they are, have two things  in  common:
they explain the observed facts, and they are completeley and utterly
wrong.                       - Terry Pratchett, _The Light Fantastic_

[U-Boot-Users] U-boot suppoorts VPN?

[Pantelis Antoniou]

On Tuesday 29 November 2005 21:38, Wolfgang Denk wrote:
> In message <200511291849.45533.pantelis@embeddedalley.com> you wrote:
> >
> > > VPN is not needed for UDP at all (o;
> ...
> > VPN no. VLAN yes.
> 
> VLAN *may* be used. But it is not necessary for a plain TFTP download
> either.
> 
> Best regards,
> 
> Wolfgang Denk
>

Methinks the guy is just confusing VPN with VLANs.

Of course this has nothing to do with TFTP downloads and such...

Regards

Pantelis

[U-Boot-Users] U-boot suppoorts VPN?

[lauren73]

Thanks a lot! I am sorry for confusing you. 
But the fact is that the 2 boards are connected as the following drawing. The hardware is designed as this. I need to download kernel for board 2 from hard drive of board 1. Usually switch cannot talk to switch without bridge or router. So in this case I think I need VPN in order to download the kernel using tftp.

 HD----CPU1 ----switch1 ------switch 2----CPU2 (uboot)
|----------board 1------   ---|-------------board 2--------------|

--
Sent from the Uboot - Users forum at Nabble.com:
http://www.nabble.com/U-boot-suppoorts-VPN--t639481.html#a1701279
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[U-Boot-Users] U-boot suppoorts VPN?

[Richard Klingler]

lauren73 (sent by Nabble.com) wrote:
> Thanks a lot! I am sorry for confusing you.
> But the fact is that the 2 boards are connected as the following 
> drawing. The hardware is designed as this. I need to download kernel for 
> board 2 from hard drive of board 1. Usually switch cannot talk to switch 
> without bridge or router. So in this case I think I need VPN in order to 
> download the kernel using tftp.

I think you are mixing VLANs with VPNs here (o;

Yes..switches don't talk to each other usually but can be connected
together without problems...they just forward packets and don't care
about IP addresses (mostly ;o).

Just make sure the source/destination IP addresses are within
same subnet..that's all...

Otherwise I would suggest some TCP/IP reading material first..


best regards
rick

[U-Boot-Users] U-boot suppoorts VPN?

[Wolfgang Denk]

In message <438C8DDA.90803@uclinux.net> you wrote:
> lauren73 (sent by Nabble.com) wrote:
...
> > But the fact is that the 2 boards are connected as the following 
...
> I think you are mixing VLANs with VPNs here (o;

This was my thought  at  first,  too.  And  in  fact  VLAN  might  be
necessary  by  certain  networking  policies  installed at lauren73's
site, but in her/his mail there was no indication for this.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
To be awake is to be alive.        - Henry David Thoreau, in "Walden"

[U-Boot-Users] U-boot suppoorts VPN?

[Jerry Van Baren]

lauren73 (sent by Nabble.com) wrote:
> Thanks a lot! I am sorry for confusing you.
> But the fact is that the 2 boards are connected as the following 
> drawing. The hardware is designed as this. I need to download kernel for 
> board 2 from hard drive of board 1. Usually switch cannot talk to switch 
> without bridge or router. So in this case I think I need VPN in order to 
> download the kernel using tftp.
> 
>  HD----CPU1 ----switch1 ------switch 2----CPU2 (uboot)
> |----------board 1------   ---|-------------board 2--------------|

Assuming switch1 and switch2 are normal ethernet switches, you need a 
crossover cable connecting switches 1 and 2 (Tx of switch 1 -> Rx of 
switch 2 and vice versa) unless your switch PHYs support auto-crossover. 
  You need CPU1 to run TFTP server software.  The it should Just 
Work[tm], no VPN or VLAN.

On the other hand, your hardware may not be normal ethernet switches, in 
which case we have even less of a clue than you.

gvb

[U-Boot-Users] U-boot suppoorts VPN?

[Wolfgang Denk]

In message <1701279.post@talk.nabble.com> you wrote:
> 
> Thanks a lot! I am sorry for confusing you. 

I think it is *you* who is confused.

> But the fact is that the 2 boards are connected as the following
> drawing. The hardware is designed as this. I need to download kernel
> for board 2 from hard drive of board 1. ...

Yes - this is a standard network setup. No problems.

>                                     ... Usually switch cannot talk to
> switch without bridge or router. So in this case

No. This is plain wrong. You are indeed seriously confused.

> I think I need VPN in order to download the kernel using tftp.

No, you do not.

> ------=_Part_77_9510264.1133283342711
> Content-Type: text/html; charset=us-ascii
> Content-Transfer-Encoding: 7bit

I asked you before NOT to post HTML. Please  respect  the  rules  and
policies of this mailing list.


Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
HR Manager to job candidate "I see you've had no  computer  training.
Although  that  qualifies  you  for upper management, it means you're
under-qualified for our entry level positions."

[U-Boot-Users] U-boot suppoorts VPN?

[Wolfgang Denk]

In message <1700773.post@talk.nabble.com> you wrote:
>
> I am working on a project. And I need to download the kernel from
> another board. Because there are more than switch between 2 CPUs, VPN
> is needed to make tftp work. Some guy told me that u-boot supports

The number of switches in a network has nothing to do with  the  fact
if you should use VPN or not.

> VPN, but need to do some configuration. I did read the README file,
> didn't find anything about VPN. Any ideas? comments?

U-Boot does not support VPN.

> ------=_Part_64_31320380.1133281807660
> Content-Type: text/html; charset=us-ascii
> Content-Transfer-Encoding: 7bit

And never again post HTML on this list, please!

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"There are three principal ways to lose money: wine, women,  and  en-
gineers.  While  the first two are more pleasant, the third is by far
the more certain."                      -- Baron Rothschild, ca. 1800