RE: [ECOS] Dynamic IP/DHCP/Routing the 'right way'

["Laurie Gellatly" <laurie.gellatly@netic.com>]

Hi Andrew,
Thanks for the swift response.
SNTP - yes. Thanks for the tips there and with DNS, I'll look at those.

init_net() was not sufficient. It left the old addresses active. I've
combined StackInit and IP_SetIP, IP_SetMask to remove the old address
and mask. Still think the routing is not being updated, but before I
launched into debugging all that I wanted to ensure I wasn't
re-inventing the wheel.

Thanks			...Laurie:{)

-----Original Message-----
From: Andrew Lunn [mailto:andrew@lunn.ch] 
Sent: Tuesday, 6 June 2006 8:56 PM
To: Laurie Gellatly
Cc: ecos-discuss@ecos.sourceware.org
Subject: Re: [ECOS] Dynamic IP/DHCP/Routing the 'right way'


On Tue, Jun 06, 2006 at 08:36:52PM +1000, Laurie Gellatly wrote:
> Hi All,
> I'll be working with the PHYTEC2294 board in preparation to using the 
> Philips LPC2210 and LPC2102 in production.
> 
> My project will allow the user to change the various IP settings
> (Address/Mask/gateway/DHCP) while the system is running. I.E. address 
> and mask are updated (old addresses are deleted). Gateway changes 
> cause the default route to be updated. DHCP can be turned off/on.
> 
> I've found some older posts about this and tried them. Maybe I missed 
> something but so far I've not found a single solution that covers all 
> my needs. Is there such a solution or is there a 'right way' to 
> achieve this?

You might need to write your own dhcp management thread which calls the
dhcp state machine as needed, or calls the init_net() function with your
static addressing information.

> After these I'll need to do the same for NTP and DNS.

By NTP you mean SNTP? You should be able to call
cyg_sntp_set_servers() at anytime to tell it about a change of unicast
SNTP server.

With DNS similarly cyg_dns_res_start() can be called at any time to
indicate a new server. 

         Andrew


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