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Re: [Idr] WG Adoption call for draft-spaghetti-idr-bgp-sendholdtimer-09 (2/28/2023 to 3/14/2023)

Robert Raszuk <robert@raszuk.net> Tue, 07 March 2023 10:46 UTC

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From: Robert Raszuk <robert@raszuk.net>
Date: Tue, 07 Mar 2023 11:45:34 +0100
Message-ID: <CAOj+MMGGR16npG+Bf=uPM8JB4TL=dJR8CT=9RGOW=xvL+G5HcQ@mail.gmail.com>
To: Gert Doering <gert@space.net>
Cc: Mikael Abrahamsson <swmike@swm.pp.se>, Job Snijders <job=40fastly.com@dmarc.ietf.org>, idr@ietf.org
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Subject: Re: [Idr] WG Adoption call for draft-spaghetti-idr-bgp-sendholdtimer-09 (2/28/2023 to 3/14/2023)
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Hi,

IMO the only thing BGP needs to do is to enable it in the socket. BGP is
not getting any USER TIMEOUT expired which in turn forces it to do any
actions in respect to the connection. TCP handles it and TCP closes the
connection. BGP can treat it as any other case of TCP closing connection.
It may syslog it with a nice message.

At least this is how I read RFC5482.

Thx,
R.

On Tue, Mar 7, 2023 at 11:39 AM Gert Doering <gert@space.net> wrote:

> Hi,
>
> On Tue, Mar 07, 2023 at 11:30:46AM +0100, Robert Raszuk wrote:
> > > Doesn't change the problem ("need to detect this") or the
> > > consequences to the FSM ("do something on detection").
> >
> > Hmmm if we would do it at TCP level (with all pros and cons) how
> > would we need to change a single thing in BGP FSM ?
>
> BGP would need to deal with the message "USER_TIMEOUT expired" in
> some way.  Like, log the fact, and behave appropriately.
>
> This is not the same as a TCP RST or any other orderly TCP shutdown.
>
> Gert Doering
>         -- NetMaster
> --
> have you enabled IPv6 on something today...?
>
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