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[lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP
From: |
Bill Auerbach |
Subject: |
[lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails |
Date: |
Fri, 17 Jul 2009 19:35:37 +0000 |
User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11 |
Follow-up Comment #7, bug #27049 (project lwip):
It's a Cisco (LinkSys) 24 port GigE router. It could be part of the problem
but being an industry standard small networking device, I would expect it to
be fairly common but I suspect used mostly for PCs. PCs never come up
together. Embedded devices can (and do).
We discussed adding a random power-up delay to the device, but that won't
guarantee that 2 or more devices still won't come up at the same time.
RFC 2131 makes more than 1 reference to sending 4 DHCPREQUESTs over a 60
second time period. This would suggest our DHCP timeouts are way too short.
The way it is now, it's possible for many (12+) lwIP devices to come up and
have it take a minute or longer to finish with a router like ours here.
Another solution might be to accept DHCP responses with IDs less than we
expect (since they are older but still valid responses).
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- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Bill Auerbach, 2009/07/17
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Robert Sprowson, 2009/07/17
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Bill Auerbach, 2009/07/17
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Robert Sprowson, 2009/07/17
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Bill Auerbach, 2009/07/17
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Simon Goldschmidt, 2009/07/17
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Bill Auerbach, 2009/07/17
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails,
Bill Auerbach <=
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Simon Goldschmidt, 2009/07/18
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Kieran Mansley, 2009/07/20
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Bill Auerbach, 2009/07/20
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Jakob Stoklund Olesen, 2009/07/21
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Bill Auerbach, 2009/07/21
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Bill Auerbach, 2009/07/21
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Bill Auerbach, 2009/07/21
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Simon Goldschmidt, 2009/07/21
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Bill Auerbach, 2009/07/21
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Simon Goldschmidt, 2009/07/21