Re: [manet] DLEP redundant Destination Ups

David,

This looks like it's a candidate for an errata. I think what *should* be
done is for the router to respond with a "Destination Up Response", using a
new status code that effectively says "State Error", or "Destination is
already up". Then I think the router should treat the second Destination Up
as a *Destination Down*, which resets the state error.

My rationale for not just ignoring the 2nd Dest up, or treating it as a
Dest Update is that there *could be* associated data with the Dest Up, like
IPv4/IPv6 address data items, and/or connected subnet data items, that may
or may not clash with the new Dest Up. IMO, best to clean it up and try
again "from scratch". I don't think this sould trigger a complete peer
session outage.

Other opinions?

Regards,
Stan

On Fri, Aug 9, 2019 at 2:43 PM Wiggins, David - 0665 - MITLL <
David.Wiggins@ll.mit.edu> wrote:

> If a modem sends two Destination Ups for the same destination without an
> intervening Destination Down for that destination, how should the router
> respond?
>
>
>
> a) This is a protocol error.  Terminate the session.
>
> b) Ignore the second Destination Up.
>
> c) Treat the second Destination Up as a Destination Update.
>
> d) something else
>
>
>
> Thanks,
>
> David
>
>
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