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IP Option
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...
We note that in IPv4, a change in IP options at routers requires
recalculating the IP header ...
... connection is established if the TCP SYN packet
contains an unknown IP option (and for 43% of the Web servers, no
connection ...
... reasonable, given that a TCP SYN packet today is more likely to be
blocked due to policies that discard packets with IP Options than due
to policies that discard packets with ECN requests in the TCP header ...
... AH ICV
computation purposes, so Quick-Start IP Option data changing en route
does not cause problems with existing IPsec AH ...
... wide
range of paths in the Internet, TCP SYN packets containing unknown IP
options will be dropped. Thus, for the sender one risk in using
Quick-Start ...
... RW03]
and [RW04] contain measurements of the impact of IP Option Processing
on packet round-trip times.
...
... work, and the problems posed by the wide deployment of middleboxes
today that block the use of known or unknown IP Options.
...
... IP header, Quick-Start requires the extra
complications of an IP Option, which can be difficult to pass through
the current Internet [MAF05 ...
... IP Option ...
... In related work, [P00] investigates the use of a slightly different
IP option for TCP connections to discover the available bandwidth
...
... TCP connections to discover the available bandwidth
along the path. In that proposal, the IP option would query the
routers ...
... routers along the path about the smallest available free buffer size.
Also, the IP option would have been sent after the initial SYN
exchange, when the TCP ...
...
This document has proposed using an IP Option for the Quick-Start
Request from the sender to the receiver ...
... Quick-Start, the equivalent of the
Quick-Start IP option would be carried in the ICMP header of the ICMP ...
... Start Request would take the same actions as in the case with the
Quick-Start IP Option, and forward the packet to the next router
along the path. A router ...
... application-level mechanisms to
send a response to the sender, exactly as with the IP Option.
One benefit of using ICMP ...
... ICMP would be that the delivery of the TCP SYN
packet or other initial packet would not be delayed by IP option
processing at routers. A greater advantage is that if middleboxes
...
... header in the same way as described in the context
of IP options earlier. If the RSVP message with the Quick-Start
Request object was dropped along the path, the transport ...
... Quick-Start Request was transmitted in a separate packet instead of
as an IP option, the transport protocol packet delivery would not be
...
... transport protocol packet delivery would not be
delayed due to IP option processing at the routers, and the initial
transport ...
... Mattia Rossi and Michael Welzl, On the Impact of IP Option Processing, Preprint-Reihe des Fachbereichs Mathematik - Informatik, No. 15, Institute of Computer Science, University of Innsbruck, Austria, October 2003. ...
... Mattia Rossi and Michael Welzl, On the Impact of IP Option Processing - Part 2, Preprint-Reihe des Fachbereichs Mathematik - Informatik, No. 26, Institute of Computer Science, University of Innsbruck, Austria, July 2004. ...