>but, using broadcast, the installer have to configure his laptop on the same >subnet of board. Why??? You can broadcast on 255.255.255.255, so, the installer doesn't have to be on the same subnet. Of course, your device should also reply on 255.255.255.255 ==================================== Frédéric BERNON HYMATOM SA Chef de projet informatique Microsoft Certified Professional Tél. : +33 (0)4-67-87-61-10 Fax. : +33 (0)4-67-70-85-44 Email : [EMAIL PROTECTED] Web Site : http://www.hymatom.fr <http://www.hymatom.fr/> ==================================== P Avant d'imprimer, penser à l'environnement
-----Message d'origine-----
De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] De la part de Piero 74
Envoyé : jeudi 21 février 2008 11:18
À : Mailing list for lwIP users
Objet : Re: RE : [lwip-users] Finding assigned IP address of device
You are right... but, using broadcast, the installer have to configure
his laptop on the same subnet of board.
Our goal is to give the possibility to have laptop (or, in the future,
a tool) configured on fixed ip too (i.e. board fixed ip 192.168.0.1 - laptop ip
192.168.0.2) and the installer have only plug a cable... no network
configuration is necessary. But the idea of broadcast could be additional!
Piero
2008/2/21, Frédéric BERNON <[EMAIL PROTECTED]>:
>So the maintenance engineer can use a cross cable and a laptop
or can connect a laptop on the same hub of board (to avoid routers drops packet
outside the familiy address)
So, in such configuration (a "direct" link), any broadcast
detection protocol seems better than implementing a double netif on the same
phy interface. Right?
====================================
Frédéric BERNON
HYMATOM SA
Chef de projet informatique
Microsoft Certified Professional
Tél. : +33 (0)4-67-87-61-10
Fax. : +33 (0)4-67-70-85-44
Email : [EMAIL PROTECTED]
Web Site : http://www.hymatom.fr <http://www.hymatom.fr/>
====================================
P Avant d'imprimer, penser à l'environnement
-----Message d'origine-----
De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] De la
part de Piero 74
Envoyé : jeudi 21 février 2008 09:20
À : Mailing list for lwIP users
Objet : Re: [lwip-users] Finding assigned IP address of
device
In a lot of network, administrator configure router for
dropping broadcast packet and allows only multicast!
For our customer needs, i decided to implement on my
board (without user interface) the possibility to work with double netif on
same phy interface: one using dhcp, and one using fixed IP in different family
address configured in DHCP server (i.e. LAN uses 10.51.yy.xx and fixed IP is
192.168.0.1).
In this way, board could work as client using its
dynamic ip, and act as server on fixed ip for maintenance reasons. So the
maintenance engineer can use a cross cable and a laptop or can connect a laptop
on the same hub of board (to avoid routers drops packet outside the familiy
address)
We discussed about my idea here:
http://lists.gnu.org/archive/html/lwip-devel/2008-02/msg00035.html
Piero
2008/2/20, Art R. <[EMAIL PROTECTED]>:
A simple but good way is to have the device do
a UDP broadcast of whatever
you want know. It does mean that the PC would
need software running on it to
receive the bcast and do what you want done.
Bill Auerbach wrote:
>
> Hello,
>
>
>
> This may be straying off topic. What methods
can be used for a node
> connected to my lwIP-based device to be able
to find out the IP address
> assigned by DHCP or AUTOIP? I don't have a
display on the device to know
> what the IP address is. How can I let the PC
wanting to connect to me
> know
> the assigned IP address?
>
>
>
> Thanks much!
>
>
>
> Bill
>
>
>
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>
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>
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