Re: [Lsr] A review of draft-zhu-lsr-isis-sr-vtn-flexalgo-04

Hi Jie I reviewed the draft as well and it seems to parallel SR VTN MT draft Enhanced VPN / VPN+ underpinning to IETF slice underlay TEAS NRP mapped to an ISIS or OSPF MTID control plane instance. Similarly here with this draft mapping of TEAS NRP to a Flex Algo FAD realizing of IETF network

Re: [Lsr] Publication has been requested for draft-ietf-lsr-ip-flexalgo-06

Hi Peter, Enabling local protection on all nodes in all topologies may also not be the best thing to do (for various reasons). While I agree that general fallback may be fragile, how about limited fallback and only to one special "protection topology" which would have few constraints allowing us

Re: [Lsr] [Need AD’s Judgement and Explanation] Re: Working Group Last Call for draft-ietf-lsr-ip-flexalgo-04 - "IGP Flexible Algorithms (Flex-Algorithm) In IP Networks"

Aijun, On 17/05/2022 16:22, Aijun Wang wrote: Hi, Peter: Here is the contradictory: The prefixes that associated with SID can exist in multiple Algo and also the algorithm 0. in SR MOPLS only. Why the prefixes that don’t associate with the SID can’t exist in specific Algo and also the

Re: [Lsr] [Need AD’s Judgement and Explanation] Re: Working Group Last Call for draft-ietf-lsr-ip-flexalgo-04 - "IGP Flexible Algorithms (Flex-Algorithm) In IP Networks"

Aijun, On 17/05/2022 15:04, Aijun Wang wrote: Hi, Peter: Based on the statements in https://datatracker.ietf.org/doc/html/draft-ietf-lsr-ip-flexalgo-06#section-6  as the followings: “To be able to associate the

Re: [Lsr] Publication has been requested for draft-ietf-lsr-ip-flexalgo-06

Robert, On 17/05/2022 14:14, Robert Raszuk wrote: Ok cool - thx Peter ! More general question - for any FlexAlgo model (incl. SR): Is fallback between topologies - say during failure of primary one - only allowed on the ingress to the network ? no. Fallback between flex-algos has never

Re: [Lsr] Publication has been requested for draft-ietf-lsr-ip-flexalgo-06

Ok cool - thx Peter ! More general question - for any FlexAlgo model (incl. SR): Is fallback between topologies - say during failure of primary one - only allowed on the ingress to the network ? If so the repair must be setup on each topology, otherwise repair will be long as it would need to

Re: [Lsr] Publication has been requested for draft-ietf-lsr-ip-flexalgo-06

Hi Robert, On 17/05/2022 12:11, Robert Raszuk wrote: Actually I would like to further clarify if workaround 1 is even doable ... It seems to me that the IP flexalgo paradigm does not have a way for more granular then destination prefix forwarding. that is correct. In IP flex-algo the

Re: [Lsr] [Need AD’s Judgement and Explanation] Re: Working Group Last Call for draft-ietf-lsr-ip-flexalgo-04 - "IGP Flexible Algorithms (Flex-Algorithm) In IP Networks"

Hi Aijun, please see inline: On 17/05/2022 04:10, Aijun Wang wrote: Hi, Peter and Acee: Then the key issues are the node’s capabilities negotiation within one area. Right? To deploy the flex-Algo and ensure the forwarding paths are available, should the nodes within one area be all

Re: [Lsr] A review of draft-zhu-lsr-isis-sr-vtn-flexalgo-04

All looks good. I'll watch for the updated draft. Best, Adrian -Original Message- From: Dongjie (Jimmy) Sent: 17 May 2022 10:59 To: adr...@olddog.co.uk; lsr@ietf.org Cc: draft-zhu-lsr-isis-sr-vtn-flexa...@ietf.org Subject: RE: A review of draft-zhu-lsr-isis-sr-vtn-flexalgo-04 Hi

Re: [Lsr] Publication has been requested for draft-ietf-lsr-ip-flexalgo-06

Actually I would like to further clarify if workaround 1 is even doable ... It seems to me that the IP flexalgo paradigm does not have a way for more granular then destination prefix forwarding. So if I have http traffic vs streaming vs voice going to the same load balancer (same dst IP address)

[Lsr] Fwd: Publication has been requested for draft-ietf-lsr-ip-flexalgo-06

Folks, A bit related to Aijun's point but I have question to the text from the draft he quoted: In cases where a prefix advertisement is received in both a IPv4 Prefix Reachability TLV and an IPv4 Algorithm Prefix Reachability TLV, the IPv4 Prefix Reachability advertisement MUST be

Re: [Lsr] A review of draft-zhu-lsr-isis-sr-vtn-flexalgo-04

Hi Adrian, Thanks a lot for your detailed review. All your comments and suggestions look good and we will produce a new revision to incorporate them. And please see replies to some points inline: Best regards, Jie > -Original Message- > From: Adrian Farrel