Tom,
On 22/2/21 13:29, Tom Herbert wrote:
On Mon, Feb 22, 2021 at 8:23 AM Nick Hilliard <nick@xxxxxxxxxx> wrote:
[....]
I understand the purpose of the draft, however, IMO, for the problems
that are described there is insufficient detail and scope to draw any
meaningful conclusions or take away any new insights.
Then I guess we disagree. One of the most commonly questions asked in
this contact is "But... why do routers look inside packets?" -- and this
document answers that question, along with the challenges it represents.
Note: in a thread on specific transports you also asked what information
routers process. And this document also answers such question.
When the draft
mentions that routers might drop packets because packets are too long,
then the obvious question is what exactly is too long.
And the obvious answer is that that depends on a vendor/model basis. If
the router only copies the mandatory header to a buffer, then "too long"
might be "1 EH".
Since this
draft is discussing real implementation and not theory, it seems like
measuring the extent and determining the real operational parameters
of the problems, like what a useful minimum length of header chains
is, seems straightforward either by experimentation or simply polling
router vendors to see what they support.
It performs a qualitative analysis of the problem.
What you ask seems to be either RFC7872bis, or a document that would
complement RFC7872.
... but certainly out of the scope of this document.
Thanks,
--
Fernando Gont
SI6 Networks
e-mail: fgont@xxxxxxxxxxxxxxx
PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492
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