Bug 26489 - incomplete info in the ppp faq about "PPP freezing when using PPPoE on the gateway"
Summary: incomplete info in the ppp faq about "PPP freezing when using PPPoE on the ga...
Status: Closed FIXED
Alias: None
Product: Documentation
Classification: Unclassified
Component: Books & Articles (show other bugs)
Version: Latest
Hardware: Any Any
: Normal Affects Only Me
Assignee: Brian Somers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2001-04-10 22:20 UTC by device
Modified: 2001-09-03 04:10 UTC (History)
0 users

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Description device 2001-04-10 22:20:00 UTC
The FAQ says :
"One fix is to use regedit on your 95/98 boxes to add the following registry entry...

    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\NetTrans\0000\MaxMTU
    
It should be a string with a value ``1450'' (more accurately it should be ``1464'' to fit TCP packets into a PPPoE frame perfectly but the ``1450'' gives you a margin of error for other IP
protocols you may encounter). This registry key is reported to have moved to Tcpip\Parameters\Interfaces\ID for adapter\MTU in Windows 2000.
Refer to Microsoft Knowledge Base documents ``Q158474 - Windows TCPIP Registry Entries'' and ``Q120642 - TCPIP & NBT Configuration Parameters for Windows NT '' for
more information on changing Windoze MTU to work with a FreeBSD/NAT/PPPoE router."

1) 1435 would be a better value to suggest, as some ADSL modems are reported not to be able to deal with packets greater than 1436

according to http://support.microsoft.com/support/kb/articles/Q120/6/42.asp
2) the "MTU" key should be a DWORD and not a STRING
3) Another 'cool' Registry key to use under windows 2000 is "EnablePMTUBHDetect" which is intended to auto-resolve MTU-discovery troubles of that kind

Fix: 

insert these statements into the PPP FAQ
How-To-Repeat: lynx http://www.freebsd.org/FAQ/ppp.html#MACOS-WIN98-PPPOE-FREEZE
lynx http://support.microsoft.com/support/kb/articles/Q120/6/42.asp
(Well...perhaps lynx isn't the right tool for that last one)
Comment 1 Murray Stokely freebsd_committer freebsd_triage 2001-09-03 00:43:06 UTC
Responsible Changed
From-To: freebsd-doc->brian

Brian is our PPP guru.
Comment 2 Brian Somers freebsd_committer freebsd_triage 2001-09-03 04:10:05 UTC
State Changed
From-To: open->closed

The FAQ has been updated