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IP Tunnel
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... discussion of interactions of
Quick-Start with IP tunnels and MPLS; however, Section 6.1.1 and 6.3
specify behavior for IP tunnels ...
... IP tunnels and MPLS; however, Section 6.1.1 and 6.3
specify behavior for IP tunnels that are aware of Quick-Start.
...
...
This section considers interactions between Quick-Start and IP
tunnels, including IPsec ([RFC4301]), IP ...
...
Simple tunnels: IP tunnel modes are generally based on adding a new
"outer" IP header that encapsulates ...
... Tunnels that are compatible with Quick-Start: We say that an IP
tunnel `is not compatible with Quick-Start' if the use of a Quick-
Start ...
... Quick-Start
over the tunnel does not cause false positives, we say that the IP
tunnel `is compatible with Quick-Start'.
...
... Tunnels that support Quick-Start: We say that an IP tunnel `supports
Quick-Start' if it allows routers ...
... Quick-Start in the outer
header of an IP tunnel might raise security concerns because an
adversary could tamper with the Quick-Start ...
... network scanners. Our approach is to
make supporting Quick-Start an option for IP tunnels. That is, in
environments or tunneling protocols where the risks of using Quick-
...
... QS TTL fields before encapsulation. The result is that there are
two viable options for IP tunnels to be compatible with Quick-Start.
The first option is the simple tunnel ...
...
Other tunnels that need to be looked at are IP tunnels over non-
network protocols, such as IP ...
... MPLS is similar to the behavior of
Quick-Start with IP Tunnels. For those MPLS paths where the IP TTL
...
... the initial simulation study. Many thanks to David Black and Joe
Touch for extensive feedback on Quick-Start and IP tunnels. We also
thank Mohammed Ashraf, John Border, Bob Briscoe, Martin Duke, Tom
Dunigan, Mitchell Erblich, Gorry Fairhurst, John Heidemann, Paul
...
... as serious of a problem.) In addition, it would be difficult, if not
impossible, for a router in the middle of an IP tunnel to deliver an
ICMP Reply packet to the actual source, for example, when the inner
...
... network may not be able to forward the
Quick-Start Request messages, and the IP tunnels might cause problems
for processing the Quick-Start Requests.
...
... IP headers in bytes, and
might know nothing at all about the separate headers added in IP
tunnels downstream. This rough estimate seems sufficient, however,
given the overall lack of fine precision in Quick-Start ...