Skip to main content

Packetization Layer Path MTU Discovery
charter-ietf-plpmtud-01

Document Charter Packetization Layer Path MTU Discovery WG (plpmtud)
Title Packetization Layer Path MTU Discovery
Last updated 2003-12-10
State Approved
WG State Concluded
IESG Responsible AD (None)
Charter edit AD (None)
Send notices to (None)

charter-ietf-plpmtud-01

This BOF is to introduce a new "Packetization Layer Path MTU Discovery
Algorithm" and discuss IETF venues that might be used to complete the
work.

This new algorithm does not rely on ICMP or other messages from the
network (so it is not subject to the problems described in RFC2923).
Instead it finds the proper MTU by starting with relatively small
packets and searching upwards by probing with test packets.

Key portions of the algorithm need to be implemented in the transport
layer. In particular any lost probes should not be treated as
congestion
signals. For this reason, it can be argued that this work belongs in
the
TSV area.

Many of the unresolved design issues pertain to the efficient use of
shared state between concurrent and successive connections to the same
destination. The complexities of the this aspect of the algorithm are
due to the huge technological breadth and subtleties of the delivery
semantics associated with the network and lower layers. For this
reason, it can be argued that this work belongs in the INT area.