[Idr] draft-kriswamy-idr-route-type-capability-00
"Jorge Rabadan (Nokia)" <jorge.rabadan@nokia.com> Mon, 04 November 2024 16:30 UTC
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From: "Jorge Rabadan (Nokia)" <jorge.rabadan@nokia.com>
To: "Krishnaswamy Ananthamurthy (kriswamy)" <kriswamy=40cisco.com@dmarc.ietf.org>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: draft-kriswamy-idr-route-type-capability-00
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Date: Mon, 04 Nov 2024 16:30:08 +0000
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Subject: [Idr] draft-kriswamy-idr-route-type-capability-00
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Hi Krishna and authors, I realized this draft will be presented on Friday, but I won’t be able to make it so here is my question about it. The document is based on the premise that the BGP session is restarted if a route type is unrecognized by the speaker: “When a new Route-type is added to EVPN, MVPN and any other address families that support route types, then all routers in the network to be updated to make sure that there is no session reset. Resetting a BGP session is expensive as we have seen from deployments that multiple AFI/SAFI are negotiated between the BGP neighbors and resetting a session will impact the network adversely.” However, RFC7606 says: “A BGP speaker advertising support for such a typed address family MUST handle routes with unrecognized NLRI types within that address family by discarding them, unless the relevant specification for that address family specifies otherwise.” Specifically, for EVPN route types, I know implementations that do bounce the peer when they receive an unsupported route type, but I also know multiple implementations that follow RFC7606 and discard them (as I think it should be). The capability might still be useful, but the text about the BGP session restarted does not look correct to me. Any thoughts about it? Thanks! Jorge From: Krishnaswamy Ananthamurthy (kriswamy) <kriswamy=40cisco.com@dmarc.ietf.org> Date: Monday, October 21, 2024 at 3:58 PM To: idr@ietf.org <idr@ietf.org> Subject: [Idr] FW: New Version Notification for draft-kriswamy-idr-route-type-capability-00.txt CAUTION: This is an external email. Please be very careful when clicking links or opening attachments. See the URL nok.it/ext for additional information. IDR WG, We have posted a new draft outlining route type capability to address BGP session reset whenever new route type is added to address families like EVPN. https://datatracker.ietf.org/doc/html/draft-kriswamy-idr-route-type-capability Request the WG to review and provide feedback/comments. Thanks, Krishna From: internet-drafts@ietf.org <internet-drafts@ietf.org> Date: Monday, October 21, 2024 at 5:51 PM To: Keyur Patel <keyur@arrcus.com>, Krishnaswamy Ananthamurthy (kriswamy) <kriswamy@cisco.com>, Lukas Krattiger (lkrattig) <lkrattig@cisco.com>, Mankamana Mishra (mankamis) <mankamis@cisco.com> Subject: New Version Notification for draft-kriswamy-idr-route-type-capability-00.txt A new version of Internet-Draft draft-kriswamy-idr-route-type-capability-00.txt has been successfully submitted by Krishnaswamy Ananthamurthy and posted to the IETF repository. Name: draft-kriswamy-idr-route-type-capability Revision: 00 Title: BGP Route Type Capability Date: 2024-10-21 Group: Individual Submission Pages: 5 URL: https://www.ietf.org/archive/id/draft-kriswamy-idr-route-type-capability-00.txt Status: https://datatracker.ietf.org/doc/draft-kriswamy-idr-route-type-capability/ HTMLized: https://datatracker.ietf.org/doc/html/draft-kriswamy-idr-route-type-capability Abstract: BGP supports different route types, which defines the encoding of Network Layer Reachability Information (NLRI) for a some of the Address Family Identifier (AFI)/Subsequent Address Family Identifier (SAFI) like Ethernet VPN (EVPN), Multicast VPN(MVPN) and so on. BGP speaker will reset the BGP session if a given route type is not supported. This document defines an Optional Capabilities to exchange the route types supported for a given AFI/SAFI such that session are not reset. The IETF Secretariat
- [Idr] FW: New Version Notification for draft-kris… Krishnaswamy Ananthamurthy (kriswamy)
- [Idr] Re: FW: New Version Notification for draft-… Robert Raszuk
- [Idr] Re: FW: New Version Notification for draft-… Robert Raszuk
- [Idr] Re: FW: New Version Notification for draft-… Krishnaswamy Ananthamurthy (kriswamy)
- [Idr] Re: FW: New Version Notification for draft-… Donatas Abraitis
- [Idr] Re: FW: New Version Notification for draft-… Robert Raszuk
- [Idr] Re: FW: New Version Notification for draft-… Donatas Abraitis
- [Idr] Re: FW: New Version Notification for draft-… Donatas Abraitis
- [Idr] draft-kriswamy-idr-route-type-capability-00 Jorge Rabadan (Nokia)
- [Idr] Re: draft-kriswamy-idr-route-type-capabilit… Krishnaswamy Ananthamurthy (kriswamy)
- [Idr] Re: draft-kriswamy-idr-route-type-capabilit… Jorge Rabadan (Nokia)
- [Idr] Re: FW: New Version Notification for draft-… Krishnaswamy Ananthamurthy (kriswamy)
- [Idr] Re: FW: New Version Notification for draft-… Robert Raszuk
- [Idr] Re: FW: New Version Notification for draft-… Krishnaswamy Ananthamurthy (kriswamy)
- [Idr] Re: FW: New Version Notification for draft-… Donatas Abraitis
- [Idr] Re: FW: New Version Notification for draft-… Ketan Talaulikar
- [Idr] Re: FW: New Version Notification for draft-… Robert Raszuk
- [Idr] Re: New Version Notification for draft-kris… Jeffrey Haas
- [Idr] Re: New Version Notification for draft-kris… Robert Raszuk
- [Idr] Re: New Version Notification for draft-kris… Jeffrey Haas
- [Idr] Re: New Version Notification for draft-kris… Robert Raszuk
- [Idr] Re: New Version Notification for draft-kris… Jeffrey Haas
- [Idr] Re: New Version Notification for draft-kris… Robert Raszuk
- [Idr] Re: New Version Notification for draft-kris… Jeffrey Haas
- [Idr] Re: New Version Notification for draft-kris… Robert Raszuk
- [Idr] Re: New Version Notification for draft-kris… Jeffrey Haas
- [Idr] Re: New Version Notification for draft-kris… Robert Raszuk