答复: [Idr] Opsdir early review of draft-ietf-idr-bgp-ls-segment-routing-ext-06
"Aijun Wang" <wangaijun@tsinghua.org.cn> Thu, 10 May 2018 01:54 UTC
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From: Aijun Wang <wangaijun@tsinghua.org.cn>
To: 'Joel Jaeggli' <joelja@bogus.com>, ops-dir@ietf.org
Cc: idr@ietf.org, ietf@ietf.org, draft-ietf-idr-bgp-ls-segment-routing-ext.all@ietf.org
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Subject: 答复: [Idr] Opsdir early review of draft-ietf-idr-bgp-ls-segment-routing-ext-06
Date: Thu, 10 May 2018 09:53:49 +0800
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Hi, Joel: Is there any IETF document to define the "IPv4/IPv6 Source Router ID" in OSPFv2/v3, for the similar scenarios that described in RFC7794? Best Regards. Aijun Wang Network R&D and Operation Support Department China Telecom Corporation Limited Beijing Research Institute,Beijing, China. -----邮件原件----- 发件人: Joel Jaeggli [mailto:joelja@bogus.com] 发送时间: 2018年5月9日 14:46 收件人: ops-dir@ietf.org 抄送: idr@ietf.org; ietf@ietf.org; draft-ietf-idr-bgp-ls-segment-routing-ext.all@ietf.org 主题: [Idr] Opsdir early review of draft-ietf-idr-bgp-ls-segment-routing-ext-06 Reviewer: Joel Jaeggli Review result: Has Nits I have performed a requested early review on the behalf of the operations directorate of the current draft-ietf-idr-bgp-ls-segment-routing-ext-06. Generally I think this document is good, I won't say ready, as this review is intended as an early review not a final one. Some nits 1- introduction This way, all BGP speakers (specifically the route-reflectors) obtain Link-State information from all IGP areas (and from other ASes from EBGP peers). * BGP speakers are agnostic about the source of the information beyond that it was exported with certain properties from the rib of it’s neighbor. 2 - An external component (e.g., a controller) then can collect SR information in the "northbound" direction across IGP areas or ASes and construct the end-to-end path (with its associated SIDs) that need to be applied to an incoming packet to achieve the desired end-to-end forwarding. * Unqualified use of the term northbound I find generally problematic, particularly in the case of a route reflector. Previously RFC 7752 manged to use the term in the title and then never again within the text. 3- 2.3.3. Source Router Identifier (Source Router-ID) TLV The Source Router-ID TLV contains the IPv4 or IPv6 Router-ID of the originator of the Prefix. For IS-IS protocol this is as defined in [RFC7794]. The Source Router-ID TLV may be used to carry the OSPF Router-ID of the prefix originator. The Source Router-ID TLV has the following format: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // IPv4/IPv6 Address (Router-ID) // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ where: Type: TBD, see Section 4. Length: 4 or 16. IPv4/IPv6 Address: 4 octet IPv4 address or 16 octet IPv6 address. The semantic of the Source Router-ID TLV is defined in [RFC7794]. * While RFC7794 Router-IDs are in fact IP addresses. OSPF Router-IDs are not even if they happen to look like them, this is particularly germain with ospfv3 but it’s worth making the distinction. 4 - 5.1.1. Operations Existing BGP and BGP-LS operational procedures apply. No additional operation procedures are defined in this document. * An informative or normative reference (probably to 7752 especially fault mangement) is probably required. _______________________________________________ Idr mailing list Idr@ietf.org https://www.ietf.org/mailman/listinfo/idr
- Opsdir early review of draft-ietf-idr-bgp-ls-segm… Joel Jaeggli
- RE: Opsdir early review of draft-ietf-idr-bgp-ls-… Ketan Talaulikar (ketant)
- RE: Opsdir early review of draft-ietf-idr-bgp-ls-… Les Ginsberg (ginsberg)
- 答复: [Idr] Opsdir early review of draft-ietf-idr-b… Aijun Wang
- RE: Opsdir early review of draft-ietf-idr-bgp-ls-… Ketan Talaulikar (ketant)