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Re: [Idr] Question about draft-haas-flowspec-capability-bits-02

Linda Dunbar <ldunbar@futurewei.com> Mon, 21 June 2021 20:51 UTC

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From: Linda Dunbar <ldunbar@futurewei.com>
To: "draft-haas-flowspec-capability-bits@ietf.org" <draft-haas-flowspec-capability-bits@ietf.org>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: Question about draft-haas-flowspec-capability-bits-02
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Date: Mon, 21 Jun 2021 20:51:41 +0000
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Subject: Re: [Idr] Question about draft-haas-flowspec-capability-bits-02
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Jeff,

One more question:
Page 3 first paragraph says that "this is due to the lack of a mandatory length element for the components in the NLRI".

But Section 4.2.1.2 of the RFC8555 Figure 3 shows that the Len can be encoded in the bits. Are you talking about a different "length"?

[cid:image003.png@01D766B5.534259D0]


Linda Dunbar
From: Linda Dunbar
Sent: Monday, June 21, 2021 3:39 PM
To: draft-haas-flowspec-capability-bits@ietf.org; idr@ietf.org
Subject: Question about draft-haas-flowspec-capability-bits-02

Jeff,

Section 2 of the draft-haas-flowspec-capability-bits-02 shows the example of 13 bits representing the capacity.
When the Nth bit is set to 1, does it represent Type N component is supported?

What if more types are proposed later? RFC8956 has Type 14-255 as reserved. I'd assume future drafts can propose more types. Does it mean the Capability value has to be expanded to 255 bits?

A nit: the second paragraph of the Section 1 says that "The components are documented in the Section 3 of RFC8955". But the components are actually specified in the Section 4. Do I miss something?


Thank you
Linda Dunbar

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