Hi Lizhong, Thanks a lot for your review and comment. Please see my replies inline:
Best regards, Jie From: BESS [mailto:[email protected]] On Behalf Of Lizhong Jin Sent: Tuesday, November 11, 2014 2:35 PM To: '程伟强'; 'David Sinicrope'; [email protected]; 'Shahram Davari' Cc: 'Stewart Bryant'; 'Andrew Malis'; [email protected]; [email protected]; 'Hui Deng' Subject: Re: [bess] [Pals] PALS IETF 91 Slot Requests - Honolulu - SLIDES Hi, Have a quick review of draft-cheng-pwe3-mpls-tp-dual-homing-coordination-01. In section 3.2: After the exchange of service PW state and switching request, both dual-homing PEs could determine the Active/Standby forwarding status of the working and protection service PWs. The “switching request” and “switchover request” refer to the switchover request by LDP defined in RFC6870, right? In that case, you need to describe the interaction between the mechanism defined in RFC6870 and the DHC defined in your document. One sentence as above is not enough. E.g., in case Two-side Dual-homing Scenario, if independent mode is enabled between two PEs, and the service PW is done, then when PE1 will switchover, after waiting for protection PW to be active, or send packets to PE2, and let PE2 to drop packets first. [Jie] Here the switching request refers to the “Dual-Node Switching TLV” in DHC message exchanged between the dual-homing PEs, it does not rely on RFC6870. [Jie] I guess the “PE2” in your above example means the remote side PE (not the other dual-homing PE in the same side), right? If so, the switchover coordination between PE1 and PE2 can be achieved using PSC defined in RFC6378. Overall, if the mechanism is applied to the case of Two-side Dual-homing Scenario, it switchover performance is not as good as local protection as expected, because you have to wait for the signaling. [Jie] If it is a AC failure, switchover is needed only on the dual-homing PEs in one side, signaling with the remote side is NOT needed. If it is a PW failure in PSN network, switchover coordination between the two sides can be performed by mechanism like PSC, and I think the performance would be similar to PSC. Regards Lizhong From: 程伟强 [mailto:[email protected]] Sent: 2014年11月11日 11:31 To: 'David Sinicrope'; [email protected]<mailto:[email protected]>; 'Shahram Davari' Cc: 'Hui Deng'; 'Andrew Malis'; [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]>; 'Stewart Bryant' Subject: Re: [Pals] PALS IETF 91 Slot Requests - Honolulu - SLIDES Hi David, Thank you very much for your arrangement. Because of Visa issue, the authors of the draft in China could not attend the meeting, and Shahram will help present the two topics. If it is possible, we may need change the presentations sequence: “MPLS-TP Dual homing protection” should be presented before “MPLS-TP Dual homing coordination” to be easier understandable the overall work. B.R. Weiqiang Cheng From: Pals [mailto:[email protected]] On Behalf Of David Sinicrope Sent: Tuesday, November 11, 2014 10:06 AM To: [email protected]<mailto:[email protected]> Cc: [email protected]<mailto:[email protected]>; Andrew Malis; IETF.PWE3; [email protected]<mailto:[email protected]>; Stewart Bryant Subject: Re: [Pals] PALS IETF 91 Slot Requests - Honolulu - SLIDES Importance: High Hi All, http://www.ietf.org/proceedings/91/agenda/agenda-91-pals The agenda for PALS is above. Speakers, please reply to this email with your slides as soon as possible… only 1 hr left to the deadline. Thanks, Dave From: David A Sinicrope <[email protected]<mailto:[email protected]>> Date: Thursday, October 30, 2014 at 1:17 PM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Cc: "IETF.PWE3" <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>, Stewart Bryant <[email protected]<mailto:[email protected]>>, Andrew Malis <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [bess] PALS IETF 91 Slot Requests - Honolulu Hi All, I’m still waiting on the tools to catch up with the new WG to post the agenda on the meeting materials web pages. In the meantime, below is the draft PALS agenda for Honolulu. If you requested a slot and I haven’t allocated one, my apologies, please complete the form below and send it in reply to this email. If you haven’t requested a slot and need one, please complete the form below and send it in reply to this email no later than 31 October 2014 12:00 EDT. *** Taking a couple of minutes to complete the form helps me complete the agenda quickly and accurately. Those that have slots allocated, please send me your slides no later than Monday 10 Nov 2014 17:00 Honolulu time. If I don’t have your slides by that time, you risk losing your slot. Thanks! Dave ********************************************************************** IETF 91 PALS - Wednesday, November 12, 2014 - 13:00 - 15:00 Coral 4 (45/120 min allocated; ** Please note the time adjustments.) ********************************************************************** Chairs: Stewart Bryant and Andy Malis Secretary: David Sinicrope (x = slide sets NOT received as of October 30, 2014 19:00 EDT) x1. 15 min - Agenda bash, WG Agenda and Status - Andy MALIS and Stewart BRYANT x2. 10 min - MPLS LDP - Patrice BRISSETTE http://datatracker.ietf.org/doc/draft-brissette-pals-pw-fec-label-request Objective: First submission, asking for feedback x3. 10 min - S-PE Outage Protection for Static Multi-Segment Pseudowires - Andy MALIS http://tools.ietf.org/html/draft-shawam-pwe3-ms-pw-protection-02 Objective: Update showing new solution based on received comments from the previous revision, to prepare for WG adoption request. x4. 10 min - A Unified Control Channel for Pseudowires - Stewart BRYANT http://datatracker.ietf.org/doc/draft-ietf-pwe3-vccv-for-gal Objective: Discuss comments and get some working group feedback on how they were addressed or will be addressed. ********************************************************************** Overflow (Will be presented if time permits.) ********************************************************************** xx. - None currently ********************************************************************** REMOTE INFORMATION FOR THE PALS SESSION(S) ********************************************************************** Remote Participation Info: http://www.ietf.org/meeting/91/remote-participation.html - No WebEx - Audio and Jabber are TBD On Mon, Oct 20, 2014 at 7:06 PM, David Sinicrope <[email protected]<mailto:[email protected]>> wrote: Hi All, Time to request presentation slots for IETF 91. If you need a presentation slot for the IETF 91 PALS session, please reply to this email (subject intact) completing the form below. If L2VPNers aren't sure if their drafts will be addressed in PALS or BESS, they can send in a request, and slot requests that belong to BESS will be forwarded with a copy to the requester. (See Andy’s email below.) Please use this form and please reply to this email. - topic (e.g., MPLS and Ethernet OAM Interworking): - draft URL (e.g., http://datatracker.ietf.org/doc/draft-ietf-pwe3-mpls-eth-oam-iwk/): - brief statement of objectives and issues that need to be discussed and resolved via the presentation during the meeting (e.g., need to address security issues and get direction from the WG): - requested duration (norm is 10 min): - speaker Given-name FAMILY-NAME (e.g., Dave SINICROPE): Thanks! Dave From: Andrew Malis <[email protected]<mailto:[email protected]>> Date: Friday, October 17, 2014 at 3:25 AM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Cc: "IETF.PWE3" <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>, Stewart Bryant <[email protected]<mailto:[email protected]>>, David A Sinicrope <[email protected]<mailto:[email protected]>> Subject: PALS WG on its way .... If you haven't been following Adrian's recent emails, the expectation is that PALS will be officially formed as a new WG in two weeks, and will meet in Honolulu in the agenda spot currently reserved for L2VPN, Wednesday at 13:00. Our WG Secretary, David Sinicrope, will be issuing a call for agenda items. For those of you that were planning to present at PWE3, you'll be presenting at PALS instead. For those of you that were planning to present at L2VPN, you may be presenting at PALS or at BESS, the latter primarily for EVPN-related drafts. Let Stewart or me know if you have any questions. We would also like to start using the PALS WG email list going forward. My understanding is that if you were on the PWE3 list, you've been auto-subscribed to the PALS list. If you were on the L2VPN list but not on the PWE3 list, you have to sign up for the PALS list on your own. The relevant information for the list is: List address: [email protected]<mailto:[email protected]> Archive: http://www.ietf.org/mail-archive/web/pals/ To subscribe: https://www.ietf.org/mailman/listinfo/pals Thanks, Andy _______________________________________________ BESS mailing list [email protected]<mailto:[email protected]> https://www.ietf.org/mailman/listinfo/bess
_______________________________________________ BESS mailing list [email protected] https://www.ietf.org/mailman/listinfo/bess
