On Thu, Mar 4, 2010 at 9:00 AM,
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Today's Topics:
1. Re: Network name of device (address@hidden)
2. RE: Network name of device (Bill Auerbach)
---------- Forwarded message ----------
From: "address@hidden" <address@hidden>
To: address@hidden
Date: Thu, 04 Mar 2010 16:16:52 +0100
Subject: Re: [lwip-users] Network name of device
Jeff Barber wrote:
It is possible to do this without a dedicated DNS server or DHCP
server, but the client host and your device would need to implement
"zero configuration networking" (see
http://en.wikipedia.org/wiki/Zero_configuration_networking as a
starting point).
We have a limited implementation of zeroconf called "AutoIP" which generates MS-like IP addresses if no static IP is configured and no DHCP server is found (see LWIP_AUTOIP option).
The name resolution can then be done with netbios (see contrib/apps/netbios) but not via DNS as that would either require the above DHCP-/DNS-server cooperation or manually configuring the DNS server. However, using netbios limits you to the windows world.
Simon
---------- Forwarded message ----------
From: "Bill Auerbach" <address@hidden>
To: "'Mailing list for lwIP users'" <address@hidden>
Date: Thu, 4 Mar 2010 11:23:19 -0500
Subject: RE: [lwip-users] Network name of device
>We have a limited implementation of zeroconf called "AutoIP" which
>generates MS-like IP addresses if no static IP is configured and no DHCP
>server is found (see LWIP_AUTOIP option).
AutoIp is Link-Local Addressing per RFC3927. I am not sure it is fully
compliant and I am pretty sure its interaction with DHCP is *not* compliant.
I suppose a bug-report should be filed to verify why I think it isn't
compliant with DHCP and to resolve it if it isn't.
ZeroConf is a standard and well-defined. (Interestingly the IETF didn't see
it as very important and there is no RFC on it and a workgroup for it has
gone missing). Most commercial devices do support it (like printers, etc.)
as does Windows, Linux, and Mac-OS. It was the basis for Apple-Talk and
grew into Rendezvous and now Bonjour. Link-Local Addressing is one of three
components of ZeroConf. I wouldn't call AutoIP "limited zeroconf". It's
Link Local addressing and well defined. It might be nice to have Zeroconf
support since it makes listing and accessing devices easier while following
a standard.
Bill
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