Re: [Lsr] Min Links for Multiple Failures on Flooding Topology

2019-04-18 Thread David Allan I
Hi Huaimo: Thanks for replying, my comments in line prefaced with DA2> 1. The alternate backup path would appear to also require the criteria of being link diverse with the FT if the goal is to protect against multiple failures. [HC]: Can you give some more details about

Re: [Lsr] Min Links for Multiple Failures on Flooding Topology

2019-04-14 Thread David Allan I
Hi Huaimo: Replies are in line….prefaced with DA> 1. The alternate backup path would appear to also require the criteria of being link diverse with the FT if the goal is to protect against multiple failures. [HC]: Can you give some more details about this? [DA] There is a

Re: [Lsr] Fwd: Open issues with Dynamic Flooding

2019-04-10 Thread David Allan I
Hi Tony: So for my edification/education, this is a general behavior that in the absence of any specific algorithm is postulated. (?) The piece I do not quite get is "adding until fixed". Is the working assumption that things have broken down to the point that there is no synchronization of

Re: [Lsr] Flooding Path Direction

2019-04-05 Thread David Allan I
:44 PM To: David Allan I ; tony...@tony.li Cc: lsr@ietf.org; Jakob Heitz (jheitz) ; Peter Psenak (ppsenak) Subject: Re: [Lsr] Flooding Path Direction Dave - IGP flooding on a link is by specification bidirectional. It is OK if A arbitrarily decides not to initiate flooding an LSP to neighbor B

Re: [Lsr] Flooding Path Direction

2019-04-04 Thread David Allan I
the directionality of the FT usage of a given link. Dave -Original Message- From: Les Ginsberg (ginsberg) Sent: Thursday, April 4, 2019 4:49 PM To: David Allan I ; tony...@tony.li Cc: lsr@ietf.org; Jakob Heitz (jheitz) ; Peter Psenak (ppsenak) Subject: RE: [Lsr] Flooding Path Direction Dave

Re: [Lsr] Flooding Path Direction

2019-04-04 Thread David Allan I
To: tony...@tony.li; David Allan I Cc: lsr@ietf.org; Jakob Heitz (jheitz) ; Peter Psenak (ppsenak) Subject: RE: [Lsr] Flooding Path Direction But the point that Peter has made needs to be heeded. Changing IGP flooding to be unidirectional is non-trivial and should not be done w/o justification

Re: [Lsr] Flooding Path Direction

2019-04-04 Thread David Allan I
Hi Gents: The algorithm in draft-allan actually has the notion of upstream, downstream and both upstream and downstream FT adjacencies. However as a generalized form is still a WIP and has yet to demonstrate merit against any of the other approaches on the table, I'd not be looking to suggest a

Re: [Lsr] Open issues with Dynamic Flooding

2019-03-05 Thread David Allan I
Got it, thx -Original Message- From: Tony Li On Behalf Of tony...@tony.li Sent: Tuesday, March 5, 2019 3:59 PM To: David Allan I Cc: Peter Psenak ; lsr@ietf.org Subject: Re: [Lsr] Open issues with Dynamic Flooding Hi Dave, > My understanding of this whole endea

Re: [Lsr] Open issues with Dynamic Flooding

2019-03-05 Thread David Allan I
OK gents, sadly I’m losing the plot here.. My understanding of this whole endeavor is that: - excessive flooding slows convergence - so we are seeking to define a reduced flooding topology - a failure that does not impact an FT adjacency is propagated throughout the topology and the effects

Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll.

2019-02-11 Thread David Allan I
Support -Original Message- From: Lsr On Behalf Of Acee Lindem (acee) Sent: Monday, February 11, 2019 5:23 AM To: Christian Hopps ; lsr@ietf.org Cc: lsr-cha...@ietf.org; lsr-...@ietf.org Subject: Re: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll. Speaking as a

Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux]

2019-02-03 Thread David Allan I
Makes sense to me, thanks for the clarity... Dave -Original Message- From: Tony Li On Behalf Of tony...@tony.li Sent: Sunday, February 3, 2019 12:14 PM To: Robert Raszuk Cc: Huaimo Chen ; lsr@ietf.org; cho...@chopps.org; li_zhenqi...@hotmail.com; David Allan I Subject: Re: [Lsr

Re: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux]

2019-02-01 Thread David Allan I
Agreed Cheers Dave -Original Message- From: Lsr On Behalf Of Christian Hopps Sent: Friday, February 1, 2019 4:26 AM To: lsr@ietf.org Cc: cho...@chopps.org Subject: [Lsr] Moving Forward [Re: Flooding Reduction Draft Redux] Summary of where we are at with dynamic flooding reduction: -

Re: [Lsr] On flooding, diameter, and degree

2018-11-19 Thread David Allan I
HI Tony: Comments in line: From: Tony Li On Behalf Of tony...@tony.li Sent: Monday, November 19, 2018 2:13 PM To: David Allan I Cc: lsr@ietf.org Subject: Re: [Lsr] On flooding, diameter, and degree Dave, Thanks very much for commenting. I’m a bit confused about your column “Receipt Degree

Re: [Lsr] On flooding, diameter, and degree

2018-11-19 Thread David Allan I
HI Tony: Re: draft-allan-lsr-flooding-algorithm…. My draft falls under the “bushy” class of solutions, to borrow your terminology. So mapping to your datapoints and translating what I presented in Bangkok to actual numbers: Graph Fault free Single FaultReplication Receipt