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Re: [Lsr] A question about draft-ietf-lsr-flex-algo

Alexander Vainshtein <Alexander.Vainshtein@ecitele.com> Wed, 03 June 2020 12:18 UTC

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From: Alexander Vainshtein <Alexander.Vainshtein@ecitele.com>
To: Huzhibo <huzhibo@huawei.com>, "Peter Psenak (ppsenak)" <ppsenak@cisco.com>
CC: "lsr@ietf.org" <lsr@ietf.org>, "draft-ietf-lsr-flex-algo@ietf.org" <draft-ietf-lsr-flex-algo@ietf.org>
Thread-Topic: A question about draft-ietf-lsr-flex-algo
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Date: Wed, 03 Jun 2020 12:18:34 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/xP_Ayc_9c4PVjyT0pO87YuFIQbY>
Subject: Re: [Lsr] A question about draft-ietf-lsr-flex-algo
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Hi Zhibo Hu,
Welcome to the club - I have already asked the same question and got a response from Peter.
You can find the relevant email thread here<https://mailarchive.ietf.org/arch/msg/spring/wvowYz7mOwR9f6je46qPV_pD9pU/>.

My 2c,
Sasha

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From: Lsr <lsr-bounces@ietf.org> On Behalf Of Huzhibo
Sent: Wednesday, June 3, 2020 3:07 PM
To: Peter Psenak (ppsenak) <ppsenak@cisco.com>
Cc: lsr@ietf.org; draft-ietf-lsr-flex-algo@ietf.org
Subject: [Lsr] A question about draft-ietf-lsr-flex-algo

Hi Peter:

I noticed that draft-ietf-lsr-flex-algo-07 adds exclude SRLG TLV. SRLG defines a group of risk-sharing link groups. It is generally used to prevent the primary and standby paths from passing the same risk-sharing link group .I don't know why a group of SRLG links should be excluded from the FlexAlgo calculation. What is its usecase?

Thanks

Zhibo Hu

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