Re: [spring] to drop or to forward unlabelled (Re: Question on RFC8660)

2020-09-04 Thread Martin Horneffer
Hi Tarek, 1) it's a good question what to do label stack has more than one label left, e.g. more SR-MPLS segments. Or a service label. Or both... So far I was considering two possibilities: a) Only one label is dumped. In case of SR-MPLS this means that one sgement can be skipped. In case of a

Re: [spring] to drop or to forward unlabelled (Re: Question on RFC8660)

2020-09-04 Thread Martin Horneffer
Hi Gyan, we had this kind of issue since the rise of LDP and the invention of the BGP free core. In a larger network, every now and then. Some years later the notions of setting up targeted LDP sessions solved some part of the issue. Some more years later, IGP-LDP synchronization indeed solve

Re: [spring] to drop or to forward unlabelled (Re: Question on RFC8660)

2020-09-04 Thread Martin Horneffer
Hi Jakob, the security consideration is a good one. However I am not asking for more than LDP used to do for decades. An MPLS backbone needs to make sure that MPLS packets are not accepted from untrusted neighbors. Best regards, Martin Am 28.08.20 um 20:31 schrieb Jakob Heitz (jheitz): It a

Re: [spring] to drop or to forward unlabelled (Re: Question on RFC8660)

2020-09-04 Thread bruno.decraene
Hi Martin, > From: spring [mailto:spring-boun...@ietf.org] On Behalf Of Martin > Horneffer > > Hello everyone, > > may I come back the the question below? Or rather let me update it a little: > > In case an SR-MPLS path is broken, should a node rather drop the packet, > or forward it? > > This

Re: [spring] Secdir last call review of draft-ietf-spring-srv6-network-programming-17

2020-09-04 Thread Brian Weis
Hi Pablo, > On Sep 1, 2020, at 8:37 AM, Pablo Camarillo (pcamaril) > wrote: > > Hi Brian, > > Many thanks for the time you took to do a thorough review, please see inline > below with [PC]. > > Cheers, > Pablo. > > -Original Message- > From: Brian Weis via Datatracker mailto:nore...

Re: [spring] to drop or to forward unlabelled (Re: Question on RFC8660)

2020-09-04 Thread Gyan Mishra
Hi Martin Yes MPLS has definitely been a learning curve for operators as especially with LDP-IGP sync, session protection and RLFA LDP tunnel in failure scenarios. In that context of the dropped question with LDP-IGP sync on unlabeled FEC the packets would not get dropped and would take a differe