Re: [Lsr] draft-ppsenak-lsr-igp-ureach-prefix-announce / UPA IS-IS semantics

2022-11-09 Thread David Lamparter
On Wed, Nov 09, 2022 at 03:16:11PM +, Peter Psenak wrote: > On 09/11/2022 15:48, David Lamparter wrote: > > On Wed, Nov 09, 2022 at 02:32:35PM +, Peter Psenak wrote: > >> as far as that /128 is not used as BGP next-hop (which obviously is not > >> the case), >

Re: [Lsr] draft-ppsenak-lsr-igp-ureach-prefix-announce / UPA IS-IS semantics

2022-11-09 Thread David Lamparter
On Wed, Nov 09, 2022 at 02:32:35PM +, Peter Psenak wrote: > On 09/11/2022 15:26, David Lamparter wrote: > > On Wed, Nov 09, 2022 at 02:13:17PM +, Peter Psenak wrote: > >> and why that would be a problem? Such prefix would never be used to for > >> r

Re: [Lsr] draft-ppsenak-lsr-igp-ureach-prefix-announce / UPA IS-IS semantics

2022-11-09 Thread David Lamparter
On Wed, Nov 09, 2022 at 02:13:17PM +, Peter Psenak wrote: > On 09/11/2022 14:56, David Lamparter wrote: > > On Wed, Nov 09, 2022 at 01:27:41PM +, Acee Lindem (acee) wrote: > > The problem is that a prefix with metric > 0xfe00 isn't actually an > > unreachab

Re: [Lsr] draft-ppsenak-lsr-igp-ureach-prefix-announce / UPA IS-IS semantics

2022-11-09 Thread David Lamparter
On Wed, Nov 09, 2022 at 01:27:41PM +, Acee Lindem (acee) wrote: > I guess I'd like to understand what one would accomplish with further > specification of prefix reachable? What requirement would this > satisfy? For the use case UPA is designed to handle (triggering BGP > PIC or other local

Re: [Lsr] draft-ppsenak-lsr-igp-ureach-prefix-announce / UPA IS-IS semantics

2022-11-09 Thread David Lamparter
On Wed, Nov 09, 2022 at 10:55:38AM +, bruno.decra...@orange.com wrote: > > From: Lsr On Behalf Of David Lamparter > > I'd rather not do that and just add > > a sub-TLV for it. > > I'm fine to use max_prefix as per RFC 5305 (prefix not considered > during SPF) as

[Lsr] draft-ppsenak-lsr-igp-ureach-prefix-announce / UPA IS-IS semantics

2022-11-09 Thread David Lamparter
Hi Peter, hi all, to iterate on the comment I made on the mic a few minutes ago, I apparently have a rather different understanding of existing IS-IS behaviour. Reading 5305/5308, ... "if a prefix is advertised with a metric larger than MAX_V6_PATH_METRIC (0xFE00),

Re: [Lsr] Dynamic flow control for flooding

2019-07-23 Thread David Lamparter
Hi Les, On Tue, Jul 23, 2019 at 08:29:30PM +, Les Ginsberg (ginsberg) wrote: > [...] As network-wide convergence depends upon fast propagation of LSP > changes - you're losing me between that previous part and the next: > - which in turn requires consistent flooding rates on all interfaces