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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: |
Tue, 21 Jul 2009 20:10:09 +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 #19, bug #27049 (project lwip):
Yes, it is slow. I meant to say that the 5 device capture was a test - its
the original DHCP with accepting responses to XID and XID-1. This way the
behavior is as-if the ID is the same, but I could see which packets the DHCP
server was replying to.
You're right, it's slow. Each device makes it even slow, as if it has a
queue and processes them in order a little at a time.
I have also been corrected on something. We have a 24-port switch and the
router running DHCP is the cable modem. This helps explain the slowness I
think.
IMO, retries indicate a problem. The retries should be eliminated if they
reasonably can be. The initial timeouts seem to have been chosen because they
were reasonable when the code was developed. I have a case that shows they
should be longer. If it can take an off-the-shelf router to 4-5 seconds to
reply, then a 3 second timeout is going to be too short.
I guess I'm done arguing for longer timeouts. No one has countered why it's
a bad idea or what could possible break or be effected by doing so.
I see no harm in repeating the IDs being used as suggested, but IMO it's only
helping the problem, not solving the problem.
I can test 5 devices coming up on our slow router and am happy to test
anything want to see.
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- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, (continued)
- [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
- [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 <=
- [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, Jakob Stoklund Olesen, 2009/07/21
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Kieran Mansley, 2009/07/22
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Jakob Stoklund Olesen, 2009/07/22
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Bill Auerbach, 2009/07/22
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Jakob Stoklund Olesen, 2009/07/22
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Bill Auerbach, 2009/07/22
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Jakob Stoklund Olesen, 2009/07/22
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Jakob Stoklund Olesen, 2009/07/23
- [lwip-devel] [bug #27049] DHCP IP address assignment with multiple lwIP devices fails, Kieran Mansley, 2009/07/27