[e2e] TCP Option Negotiation

Ralph Droms rdroms at cisco.com
Wed May 23 06:34:27 PDT 2001

I had heard about this quiet time (which I didn't think of as implementing 
TCP quiet time) in the Microsoft server.  This server's quiet time is a 
"value added" feature that is not part of the DHCP spec.  I note that the 
first issue (adding quiet time because of time zone differences) is, I 
think, based on a misinterpretation of the DHCP spec.  I don't know if the 
second issue (adding quiet time because of clock drift between clients and 
servers) arose as a result of a problem observed in practice or a projected 

Other servers - in particular, the DHCP server in the DSL CPE I mentioned 
in my previous note - do not implement any quiet time...

- Ralph

At 01:49 PM 5/17/2001 -0600, Vernon Schryver wrote:

>For whatever it might be worth, please consider the recent question
>in either the main IETF mailing list or the DHCP WG mailing list
>from someone complaining about a "Assembly Line DHCP - Grace Period
>Problem" and pointing at what I understood to be
>http://support.microsoft.com/support/kb/articles/Q153/0/72.asp or
>4 or 24 hours plus the remaining lease time sounds like enough of a quiet
>time for most purposes.

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