Hi Cathy, Thanks for replies on both of my questions. Your answers align exactly with my understanding of the proposed.
There's a new work brewing in the BFD WG: S-BFD. That might fit nicely to your needs: single-sided continuity check (from B4) where AFTR can remain stateless (no need to configure BFD sessions on AFTR for each B4). https://datatracker.ietf.org/doc/draft-akiya-bfd-seamless-base/ -Nobo > -----Original Message----- > From: Zhouqian (Cathy) [mailto:[email protected]] > Sent: Monday, April 28, 2014 5:30 AM > To: Nobo Akiya (nobo); [email protected] > Cc: [email protected] > Subject: RE: Mail regarding draft-tsou-softwire-bfd-ds-lite > > Hi Nobo, > Sorry for late reply. Please see inline. > > Best Regards, > Cathy > > > > -----Original Message----- > > From: Softwires [mailto:[email protected]] On Behalf Of Nobo > > Akiya > > (nobo) > > Sent: Thursday, April 17, 2014 9:56 PM > > To: [email protected] > > Cc: [email protected] > > Subject: [Softwires] Mail regarding draft-tsou-softwire-bfd-ds-lite > > > > Hi Authors, > > > > Couple of questions around proposed the BFD solution. > > > > 1. Is the goal for B4 to detect [lack of] reachability to AFTR? Or > > does the goal include AFTR to keep state of which B4s are *speaking to it*? > > > It depends on specific technology, e.g., if PCP is used, AFTR does not keep > the state of which B4s it is speaking to . > But if some bidirectional technology is used, e.g., BFD, AFTR will keep the > state. > > > > 2. It's fairly clear how BFD session can be instantiated/maintained on > > B4 (to AFTR). However, I'm not clear on how BFD sessions are > > instantiated/maintained on AFTR (to B4s). Is there some sort of > > automatic mechanism, or is this configured? > BFD sessions could be sent from AFTR only after B4 firstly initiated the > session. So the answer is that this is configured. > > > > -Nobo > > > > _______________________________________________ > > Softwires mailing list > > [email protected] > > https://www.ietf.org/mailman/listinfo/softwires _______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
