Re: [Idr] BGP session isolation for BGP-LS (and others in general)

Nikos Triantafillis <ntriantafillis@gmail.com> Sat, 20 October 2018 05:31 UTC

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From: Nikos Triantafillis <ntriantafillis@gmail.com>
Date: Fri, 19 Oct 2018 22:30:57 -0700
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To: "Ketan Talaulikar (ketant)" <ketant@cisco.com>
Cc: Susan Hares <shares@ndzh.com>, acee@cisco.com, Robert Raszuk <robert@raszuk.net>, idr wg <idr@ietf.org>
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Subject: Re: [Idr] BGP session isolation for BGP-LS (and others in general)
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+1 on https://tools.ietf.org/html/draft-ietf-idr-bgp-multisession-07 for
session isolation.

Nikos.-

On Fri, Oct 19, 2018 at 9:42 PM Ketan Talaulikar (ketant) <ketant@cisco.com>
wrote:

> < updating the subject line to not confuse with a specific draft under
> review J >
>
>
>
> While we are doing this analysis for best way to achieve session
> isolation, how about
> https://tools.ietf.org/html/draft-ietf-idr-bgp-multisession-07 ?
>
>
>
> Any feedback/inputs on this mechanism?
>
>
>
> Thanks,
>
> Ketan
>
>
>
> *From:* Idr <idr-bounces@ietf.org> *On Behalf Of * Susan Hares
> *Sent:* 19 October 2018 20:06
> *To:* Acee Lindem (acee) <acee@cisco.com>; 'Robert Raszuk' <
> robert@raszuk.net>
> *Cc:* idr@ietf.org
> *Subject:* Re: [Idr] Review of
> draft-ietf-idr-bgpls-segment-routing-epe-16.txt
>
>
>
> Robert:
>
>
>
> My understanding is that you wish me to do a WG adoption call for the
> following draft:
>
>
>
> https://tools...ietf.org/html/draft-raszuk-ti-bgp-01
> <https://tools.ietf.org/html/draft-raszuk-ti-bgp-01>
>
>
>
> I will review the draft for an adoption call later today.  You will need
> to present at the IDR interim so that the IDR WG can ask questions.
>
>
>
> Sue
>
>
>
> *From:* Idr [mailto:idr-bounces@ietf.org <idr-bounces@ietf.org>] *On
> Behalf Of *Susan Hares
> *Sent:* Friday, October 19, 2018 10:11 AM
> *To:* 'Acee Lindem (acee)'; 'Robert Raszuk'
> *Cc:* idr@ietf.org
> *Subject:* Re: [Idr] Review of
> draft-ietf-idr-bgpls-segment-routing-epe-16.txt
>
>
>
> Acee:
>
>
>
> Thank you for your feedback on the bis and the ordering of the drafts.
>
>
>
> Sue
>
>
>
> *From:* Acee Lindem (acee) [mailto:acee@cisco.com <acee@cisco.com>]
> *Sent:* Friday, October 19, 2018 10:05 AM
> *To:* Robert Raszuk; shares@ndzh.com
> *Cc:* idr@ietf.org
> *Subject:* Re: [Idr] Review of
> draft-ietf-idr-bgpls-segment-routing-epe-16.txt
>
>
>
> Hi Sue, Robert,
>
> I don’t think we need to gate all the extant BGP-LS drafts on the
> completion of this new work improving the RFC 7752 considerations. I agree
> that it would be useful.
>
> Thanks,
>
> Acee
>
>
>
> *From: *Idr <idr-bounces@ietf.org> on behalf of Robert Raszuk <
> robert@raszuk.net>
> *Date: *Friday, October 19, 2018 at 9:38 AM
> *To: *Susan Hares <shares@ndzh.com>
> *Cc: *IDR List <idr@ietf.org>
> *Subject: *Re: [Idr] Review of
> draft-ietf-idr-bgpls-segment-routing-epe-16.txt
>
>
>
> Hi Sue,
>
>
>
> *[KT] When isolation is not followed then the BGP-LS AFI/SAFI share fate
> with the other MP BGP signaling. This can result in update churn or errors
> hit on one would affect the other. The concern would be that BGP-LS
> topology churn should not come in the way of the (MP) BGP routing updates
> and slow down convergence. The session bring down due to an error
> notification due to some error in BGP-LS encoding is also a likelihood.
> However, all of these are not really specific to this BGP-LS extension and
> should be documented in general for BGP-LS. I volunteer to help with that
> as a separate draft and putting some text like this hear does not seem like
> a good idea.*
>
>
>
> [Sue] An additional draft is a fine way to handle this point as
>
> this problem does impact  all BGP-LS.  I like this approach.
>
>
>
> However, if you take this approach we will need to have this draft
>
> at a WG draft status before we can forward the other drafts to the
>
> IESG.   Can you spin this draft quickly?  I will be glad to review it
>
> and do a WG adoption call.  Can you get it done over the weekend?
>
> We can talk about it on the 26th.
>
>
>
> Is your intention to "document" the fate sharing issue or solve it ?
>
>
>
> If this is about documenting obvious then sure new draft can be spinned
> over weekend.
>
>
>
> If this is however about solving the issue I recommend we adopt BGP
> Transport Instance draft to WG status and move BGP-LS to simply use new TCP
> port making it at least at the TCP session level fully independent from
> other SAFIs.
>
>
>
> Ref: https://tools...ietf.org/html/draft-raszuk-ti-bgp-01
> <https://tools.ietf.org/html/draft-raszuk-ti-bgp-01>
>
>
>
> Thx,
>
> R.
>
>
>
>
>
>
>
>
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