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INFORMATIONAL
Internet Engineering Task Force (IETF) N. Del Regno, Ed.Request for Comments: 7079 Verizon Communications, Inc.Category: Informational A. Malis, Ed.ISSN: 2070-1721 Consultant November 2013The Pseudowire (PW) and Virtual Circuit Connectivity Verification (VCCV) Implementation Survey ResultsAbstract The IETF Pseudowire Emulation Edge-to-Edge (PWE3) working group has defined many encapsulations of various layer 1 and layer 2 service- specific PDUs and circuit data. In most of these encapsulations, use of the Pseudowire (PW) Control Word is required. However, there are several encapsulations for which the Control Word is optional, and this optionality has been seen in practice to possibly introduce interoperability concerns between multiple implementations of those encapsulations. This survey of the Pseudowire / Virtual Circuit Connectivity Verification (VCCV) user community was conducted to determine implementation trends and the possibility of always mandating the Control Word.Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; seeSection 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained athttp://www.rfc-editor.org/info/rfc7079.Del Regno & Malis Informational [Page 1]
RFC 7079 PW/VCCV Implementation Survey Results November 2013Copyright Notice Copyright (c) 2013 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject toBCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.Del Regno & Malis Informational [Page 2]
RFC 7079 PW/VCCV Implementation Survey Results November 2013Table of Contents1. Introduction ....................................................41.1. PW/VCCV Survey Overview ....................................51.2. PW/VCCV Survey Form ........................................51.3. PW/VCCV Survey Highlights ..................................72. Survey Results ..................................................82.1. Summary of Results .........................................82.2. Respondents ................................................82.3. Pseudowire Encapsulations Implemented ......................92.4. Number of Pseudowires Deployed ............................102.5. VCCV Control Channel in Use ...............................112.6. VCCV Connectivity Verification Types in Use ...............14 2.7. Control Word Support for Encapsulations for Which CW Is Optional ............................................162.8. Open-Ended Question .......................................173. Security Considerations ........................................184. Acknowledgements ...............................................185. Informative References .........................................19Appendix A. Survey Responses ......................................20A.1. Respondent 1 ...............................................20A.2. Respondent 2 ...............................................21A.3. Respondent 3 ...............................................22A.4. Respondent 4 ...............................................23A.5. Respondent 5 ...............................................24A.6. Respondent 6 ...............................................25A.7. Respondent 7 ...............................................27A.8. Respondent 8 ...............................................28A.9. Respondent 9 ...............................................29A.10. Respondent 10 .............................................30A.11. Respondent 11 .............................................31A.12. Respondent 12 .............................................32A.13. Respondent 13 .............................................33A.14. Respondent 14 .............................................35A.15. Respondent 15 .............................................36A.16. Respondent 16 .............................................38A.17. Respondent 17 .............................................39Del Regno & Malis Informational [Page 3]
RFC 7079 PW/VCCV Implementation Survey Results November 20131. Introduction Most Pseudowire Emulation Edge-to-Edge (PWE3) encapsulations mandate the use of the Control Word (CW) to carry information essential to the emulation, to inhibit Equal-Cost Multipath (ECMP) behavior, and to discriminate Operations, Administration, and Maintenance (OAM) from Pseudowire (PW) packets. However, some encapsulations treat the Control Word as optional. As a result, implementations of the CW, for encapsulations for which it is optional, vary by equipment manufacturer, equipment model, and service provider network. Similarly, Virtual Circuit Connectivity Verification (VCCV) supports three Control Channel (CC) types and multiple Connectivity Verification (CV) types. This flexibility has led to reports of interoperability issues within deployed networks and associated documents to attempt to remedy the situation. The encapsulations and modes for which the Control Word is currently optional are: o Ethernet Tagged Mode [RFC4448] o Ethernet Raw Mode [RFC4448] o Point-to-Point Protocol (PPP) [RFC4618] o High-Level Data Link Control (HDLC) [RFC4618] o Frame Relay Port Mode [RFC4618] o ATM (N:1 Cell Mode) [RFC4717] Virtual Circuit Connectivity Verification (VCCV) [RFC5085] defines three Control Channel types for MPLS PWs: Type 1, using the PW Control Word; Type 2, using the Router Alert (RA) Label; and Type 3, using Time to Live (TTL) Expiration (e.g., MPLS PW Label with TTL == 1). While Type 2 (RA Label) is indicated as being "the preferred mode of VCCV operation when the Control Word is not present",RFC5085 does not indicate a mandatory Control Channel to ensure interoperable implementations. The closest it comes to mandating a control channel is the requirement to support Type 1 (Control Word) whenever the CW is present. As such, the three options yield seven implementation permutations (assuming you have to support at least one Control Channel type to provide VCCV). Due to these permutations, interoperability challenges have been identified by several VCCV users.Del Regno & Malis Informational [Page 4]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 In order to assess the best approach to address the observed interoperability issues, the PWE3 working group decided to solicit feedback from the PW and VCCV user community regarding implementation. This document presents the survey questionnaire and the information returned by those in the user community who participated.1.1. PW/VCCV Survey Overview Per the direction of the PWE3 working group chairs, a survey was created to sample the nature of implementations of PWs, with specific emphasis on Control Word usage, and VCCV, with emphasis on Control Channel and Control Type usage. The survey consisted of a series of questions based on direction of the WG chairs and the survey opened to the public on November 4, 2010. The survey was conducted using the SurveyMonkey tool,http://www.surveymonkey.com. The survey ran from November 4, 2010 until February 25, 2011 and was repeatedly publicized on the PWE3 email list over that period. The editors took precautions to ensure the validity of the sample and the data. Specifically, only responses with recognizable non-vendor company-affiliated email addresses were accepted. Unrecognizable or personal email addresses would have been contacted to determine their validity, but none were received. Only one response was received from each responding company. If multiple responses from a company had been received, they would have been contacted to determine whether the responses were duplicative or additive. This, however, did not occur.1.2. PW/VCCV Survey Form The PW/VCCV Implementation Survey requested the following information about user implementations (the lists of implementation choices were taken verbatim from the survey): - Responding Organization. No provisions were made for anonymous responses, as all responses required a valid email address in order to validate the survey response. However, the results herein are reported anonymously, except for an alphabetic list of participating organizations inSection 2.2.Del Regno & Malis Informational [Page 5]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 - Of the various encapsulations (and options therein) known at the time, including the WG document, "Encapsulation Methods for Transport of Fibre Channel" (now [RFC6307]), which were implemented by the respondent. These included: o Ethernet Tagged Mode -RFC 4448 o Ethernet Raw Mode -RFC 4448 o Structure-Agnostic Time Division Multiplexing (TDM) over Packet (SAToP) -RFC 4553 o PPP -RFC 4618 o HDLC -RFC 4618 o Frame Relay (Port Mode) -RFC 4619 o Frame Relay (1:1 Mode) -RFC 4619 o ATM (N:1 Mode) -RFC 4717 o ATM (1:1 Mode) -RFC 4717 o ATM (AAL5 Service Data Unit (SDU) Mode) -RFC 4717 o ATM (AAL5 PDU Mode) -RFC 4717 o Circuit Emulation over Packet (CEP) -RFC 4842 o Circuit Emulation Service over Packet Switched Network (CESoPSN) -RFC 5086 o Time Division Multiplexing over IP (TDMoIP) -RFC 5087 o Fiber Channel (Port Mode) - "Encapsulation Methods for Transport of Fibre Channel" (nowRFC 6307) - Approximately how many PWs of each type were deployed. Respondents could list a number, or for the sake of privacy, could just respond "In-Use" instead.Del Regno & Malis Informational [Page 6]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 - For each encapsulation listed above, the respondent could indicate which Control Channel [RFC5085] was in use. (SeeSection 1 for a discussion of these Control Channels.) The options listed were: o Control Word (Type 1) o Router Alert Label (Type 2) o TTL Expiry (Type 3) - For each encapsulation listed above, the respondent could indicate which Connectivity Verification types [RFC5085] were in use. The options were: o Internet Control Message Protocol (ICMP) Ping o Label Switched Path (LSP) Ping - For each encapsulation type for which the Control Word is optional, the respondents could indicate the encapsulation(s) for which Control Word was supported by the equipment vendor, and whether the CW was also in use in the network. The encapsulations listed were: o Ethernet (Tagged Mode) o Ethernet (Raw Mode) o PPP o HDLC o Frame Relay (Port Mode) o ATM (N:1 Cell Mode) - Finally, a free-form entry was provided for the respondent to provide feedback regarding PW and VCCV deployments, VCCV interoperability challenges, or the survey or any other network/ vendor details they wished to share.1.3. PW/VCCV Survey Highlights There were seventeen responses to the survey that met the validity requirements inSection 1.1. The responding companies are listed below inSection 2.2.Del Regno & Malis Informational [Page 7]
RFC 7079 PW/VCCV Implementation Survey Results November 20132. Survey Results2.1. Summary of Results Prior to this survey, there was considerable speculation about whether the Control Word could always be mandated, with several proposals to do so. However, the survey showed that there was considerable deployment of PWs that did not use the CW. The publication of this survey serves as a reminder of the extent of PWs without the CW in use, and hence a reminder that the CW-less modes cannot be deprecated in the near future.2.2. Respondents The following companies, listed here alphabetically as received in the survey responses, participated in the PW/VCCV Implementation Survey. Responses were only solicited from non-vendors (users and service providers), and no vendors responded (although if they had, their response would not have been included). The data provided has been aggregated. No specific company's response will be detailed herein. o AboveNet o AMS-IX o Bright House Networks o Cox Communications o Deutsche Telekom AG o Easynet Global Services o France Telecom Orange o Internet Solution o MTN South Africa o OJSC MegaFon o Superonline o Telecom New Zealand o Telstra CorporationDel Regno & Malis Informational [Page 8]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 o Time Warner Cable o Tinet o Verizon o Wipro Technologies2.3. Pseudowire Encapsulations Implemented The following request was made: "In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented." Of all responses, the following list shows the percentage of responses for each encapsulation: o Ethernet Tagged Mode -RFC 4448 = 76.5% o Ethernet Raw Mode -RFC 4448 = 82.4% o SAToP -RFC 4553 = 11.8% o PPP -RFC 4618 = 11.8% o HDLC -RFC 4618 = 5.9% o Frame Relay (Port Mode) -RFC 4619 = 17.6% o Frame Relay (1:1 Mode) -RFC 4619 = 41.2% o ATM (N:1 Mode) -RFC 4717 = 5.9% o ATM (1:1 Mode) -RFC 4717 = 17.6% o ATM (AAL5 SDU Mode) -RFC 4717 = 5.9% o ATM (AAL5 PDU Mode) -RFC 4717 = 0.0% o CEP -RFC 4842 = 0.0% o CESoPSN -RFC 5086 = 11.8% o TDMoIP -RFC 5087 = 11.8% o Fiber Channel (Port Mode) - "Encapsulation Methods for Transport of Fibre Channel" (nowRFC 6307) = 5.9%Del Regno & Malis Informational [Page 9]
RFC 7079 PW/VCCV Implementation Survey Results November 20132.4. Number of Pseudowires Deployed The following question was asked: "Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so." The following list shows the number of pseudowires in use for each encapsulation: o Ethernet Tagged Mode = 93,861 o Ethernet Raw Mode = 94,231 o SAToP -RFC 4553 = 20,050 o PPP -RFC 4618 = 500 o HDLC -RFC 4618 = 0 o Frame Relay (Port Mode) -RFC 4619 = 5,002 o Frame Relay (1:1 Mode) -RFC 4619 = 50,959 o ATM (N:1 Mode) -RFC 4717 = 50,000 o ATM (1:1 Mode) -RFC 4717 = 70,103 o ATM (AAL5 SDU Mode) -RFC 4717 = 0 o ATM (AAL5 PDU Mode) -RFC 4717 = 0 o CEP -RFC 4842 = 0 o CESoPSN -RFC 5086 = 21,600 o TDMoIP -RFC 5087 = 20,000 o Fiber Channel (Port Mode) - "Encapsulation Methods for Transport of Fibre Channel" (nowRFC 6307) = 0 In the above responses (on several occasions), the response was in the form of "> XXXXX" where the response indicated a number greater than the one provided. Where applicable, the number itself was used in the sums above. For example, ">20K" and "20K+" yielded 20K.Del Regno & Malis Informational [Page 10]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 Additionally, the following encapsulations were listed as "In-Use" with no quantity provided: o Ethernet Raw Mode: 2 Responses o ATM (AAL5 SDU Mode): 1 Response o TDMoIP: 1 Response2.5. VCCV Control Channel in Use The following instructions were given: "Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply." The numbers below indicate the number of responses. The responses were: o Ethernet Tagged Mode -RFC 4448 * Control Word (Type 1) = 7 * Router Alert Label (Type 2) = 3 * TTL Expiry (Type 3) = 3 o Ethernet Raw Mode -RFC 4448 * Control Word (Type 1) = 8 * Router Alert Label (Type 2) = 4 * TTL Expiry (Type 3) = 4 o SAToP -RFC 4553 * Control Word (Type 1) = 1 * Router Alert Label (Type 2) = 0 * TTL Expiry (Type 3) = 0 o PPP -RFC 4618 * Control Word (Type 1) = 0 * Router Alert Label (Type 2) = 0 * TTL Expiry (Type 3) = 0Del Regno & Malis Informational [Page 11]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 o HDLC -RFC 4618 * Control Word (Type 1) = 0 * Router Alert Label (Type 2) = 0 * TTL Expiry (Type 3) = 0 o Frame Relay (Port Mode) -RFC 4619 * Control Word (Type 1) = 1 * Router Alert Label (Type 2) = 0 * TTL Expiry (Type 3) = 0 o Frame Relay (1:1 Mode) -RFC 4619 * Control Word (Type 1) = 3 * Router Alert Label (Type 2) = 0 * TTL Expiry (Type 3) = 2 o ATM (N:1 Mode) -RFC 4717 * Control Word (Type 1) = 1 * Router Alert Label (Type 2) = 0 * TTL Expiry (Type 3) = 0 o ATM (1:1 Mode) -RFC 4717 * Control Word (Type 1) = 1 * Router Alert Label (Type 2) = 0 * TTL Expiry (Type 3) = 1 o ATM (AAL5 SDU Mode) -RFC 4717 * Control Word (Type 1) = 0 * Router Alert Label (Type 2) = 1 * TTL Expiry (Type 3) = 0Del Regno & Malis Informational [Page 12]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 o ATM (AAL5 PDU Mode) -RFC 4717 * Control Word (Type 1) = 0 * Router Alert Label (Type 2) = 0 * TTL Expiry (Type 3) = 0 o CEP -RFC 4842 * Control Word (Type 1) = 0 * Router Alert Label (Type 2) = 0 * TTL Expiry (Type 3) = 0 o CESoPSN -RFC 5086 * Control Word (Type 1) = 0 * Router Alert Label (Type 2) = 0 * TTL Expiry (Type 3) = 1 o TDMoIP -RFC 5087 * Control Word (Type 1) = 0 * Router Alert Label (Type 2) = 0 * TTL Expiry (Type 3) = 0 o Fiber Channel (Port Mode) - "Encapsulation Methods for Transport of Fibre Channel" (nowRFC 6307) * Control Word (Type 1) = 0 * Router Alert Label (Type 2) = 0 * TTL Expiry (Type 3) = 0Del Regno & Malis Informational [Page 13]
RFC 7079 PW/VCCV Implementation Survey Results November 20132.6. VCCV Connectivity Verification Types in Use The following instructions were given: "Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type." Note that Bidirectional Forwarding Detection (BFD) was not one of the choices. The responses were as follows: o Ethernet Tagged Mode -RFC 4448 * ICMP Ping = 5 * LSP Ping = 11 o Ethernet Raw Mode -RFC 4448 * ICMP Ping = 6 * LSP Ping = 11 o SAToP -RFC 4553 * ICMP Ping = 0 * LSP Ping = 2 o PPP -RFC 4618 * ICMP Ping = 0 * LSP Ping = 0 o HDLC -RFC 4618 * ICMP Ping = 0 * LSP Ping = 0 o Frame Relay (Port Mode) -RFC 4619 * ICMP Ping = 0 * LSP Ping = 1 o Frame Relay (1:1 Mode) -RFC 4619 * ICMP Ping = 2 * LSP Ping = 5Del Regno & Malis Informational [Page 14]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 o ATM (N:1 Mode) -RFC 4717 * ICMP Ping = 0 * LSP Ping = 1 o ATM (1:1 Mode) -RFC 4717 * ICMP Ping = 0 * LSP Ping = 3 o ATM (AAL5 SDU Mode) -RFC 4717 * ICMP Ping = 0 * LSP Ping = 1 o ATM (AAL5 PDU Mode) -RFC 4717 * ICMP Ping = 0 * LSP Ping = 0 o CEP -RFC 4842 * ICMP Ping = 0 * LSP Ping = 0 o CESoPSN -RFC 5086 * ICMP Ping = 0 * LSP Ping = 1 o TDMoIP -RFC 5087 * ICMP Ping = 0 * LSP Ping = 1 o Fiber Channel (Port Mode) - "Encapsulation Methods for Transport of Fibre Channel" (nowRFC 6307) * ICMP Ping = 0 * LSP Ping = 0Del Regno & Malis Informational [Page 15]
RFC 7079 PW/VCCV Implementation Survey Results November 20132.7. Control Word Support for Encapsulations for Which CW Is Optional The following instructions were given: "Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional." The responses were: o Ethernet (Tagged Mode) * Supported by Network/Equipment = 13 * Used in Network = 6 o Ethernet (Raw Mode) * Supported by Network/Equipment = 14 * Used in Network = 7 o PPP * Supported by Network/Equipment = 5 * Used in Network = 0 o HDLC * Supported by Network/Equipment = 4 * Used in Network = 0 o Frame Relay (Port Mode) * Supported by Network/Equipment = 3 * Used in Network = 1 o ATM (N:1 Cell Mode) * Supported by Network/Equipment = 5 * Used in Network = 1Del Regno & Malis Informational [Page 16]
RFC 7079 PW/VCCV Implementation Survey Results November 20132.8. Open-Ended Question Space was provided for user feedback. The following instructions were given: "Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share." Below are the responses, made anonymous. The responses are otherwise provided here verbatim. 1. BFD VCCV Control Channel is not indicated in the survey (may be required for PW redundancy purpose) 2. Using CV is not required at the moment 3. COMPANY has deployed several MPLS network elements, from multiple vendors. COMPANY is seeking a uniform implementation of VCCV Control Channel (CC) capabilities across its various vendor platforms. This will provide COMPANY with significant advantages in reduced operational overheads when handling cross-domain faults. Having a uniform VCCV feature implementation in COMPANY multi-vendor network leads to: o Reduced operational cost and complexity o Reduced OSS development to coordinate incompatible VCCV implementations. o Increased end-end service availability when handing faults. In addition, currently some of COMPANY deployed VCCV traffic flows (on some vendor platforms) are not guaranteed to follow those of the customer's application traffic (a key operational requirement). As a result, the response from the circuit ping cannot faithfully reflect the status of the circuit. This leads to ambiguity regarding the operational status of our networks. An in-band method is highly preferred, with COMPANY having a clear preference for VCCV Circuit Ping using PWE Control Word. This preference is being pursued with each of COMPANY vendors. 4. PW VCCV is very useful tool for finding faults in each PW channel. Without this we can not find fault on a PW channel. PW VCCV using BFD is another better option. Interoperability challenges are with Ethernet OAM mechanism.Del Regno & Malis Informational [Page 17]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 5. We are using L2PVPN AToM like-to-like models - ATMoMPLS - EoMPLS ATMoMPLS : This service offered for transporting ATM cells over IP/MPLS core with Edge ATM CE devices including BPX, Ericsson Media Gateway etc. This is purely a Port mode with cell-packing configuration on it to have best performance. QoS marking is done for getting LLQ treatment in the core for these MPLS encapsulated ATM packets. EoMPLS: This service offered for transporting 2G/3G traffic from network such as Node-B to RNC's over IP/MPLS backbone core network. QoS marking is done for getting guaranteed bandwidth treatment in the core for these MPLS encapsulated ATM packets. In addition to basic L2VPN service configuration, these traffic are routed via MPLS TE tunnels with dedicated path and bandwidth defined to avoid bandwidth related congestion. 6. EQUIPMENT MANUFACTURER does not provide options to configure VCCV control-channel and its sub options for LDP based L2Circuits. How can we achieve end-to-end management and fault detection of PW without VCCV in such cases? 7. I'm very interested in this work as we continue to experience interop challenges particularly with newer vendors to the space who are only implementing VCCV via control word. Vendors who have tailed their MPLS OAM set specifically to the cell backhaul space and mandatory CW have been known to fall into this space. That's all I've got.3. Security Considerations As this document is an informational report of the PW/VCCV User Implementation Survey results, no protocol security considerations are introduced.4. Acknowledgements We would like to thank the chairs of the PWE3 working group for their guidance and review of the survey questions. We would also like to sincerely thank those listed inSection 2.2. who took the time and effort to participate.Del Regno & Malis Informational [Page 18]
RFC 7079 PW/VCCV Implementation Survey Results November 20135. Informative References [RFC4448] Martini, L., Rosen, E., El-Aawar, N., and G. Heron, "Encapsulation Methods for Transport of Ethernet over MPLS Networks",RFC 4448, April 2006. [RFC4618] Martini, L., Rosen, E., Heron, G., and A. Malis, "Encapsulation Methods for Transport of PPP/High-Level Data Link Control (HDLC) over MPLS Networks",RFC 4618, September 2006. [RFC4717] Martini, L., Jayakumar, J., Bocci, M., El-Aawar, N., Brayley, J., and G. Koleyni, "Encapsulation Methods for Transport of Asynchronous Transfer Mode (ATM) over MPLS Networks",RFC 4717, December 2006. [RFC5085] Nadeau, T., Ed. and C. Pignataro, Ed., "Pseudowire Virtual Circuit Connectivity Verification (VCCV): A Control Channel for Pseudowires", December 2007. [RFC6307] Black, D., Dunbar, L., Roth, M., and R. Solomon, "Encapsulation Methods for Transport of Fibre Channel Traffic over MPLS Networks",RFC 6307, April 2012.Del Regno & Malis Informational [Page 19]
RFC 7079 PW/VCCV Implementation Survey Results November 2013Appendix A. Survey Responses The detailed responses are included in this appendix. The respondent contact info has been removed.A.1. Respondent 1 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - 423 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. Ethernet Tagged Mode -RFC 4448: Control Word (Type 1) 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Tagged Mode -RFC 4448: LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode) Used in Network: Ethernet (Tagged Mode), Ethernet (Raw Mode) 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. No ResponseDel Regno & Malis Informational [Page 20]
RFC 7079 PW/VCCV Implementation Survey Results November 2013A.2. Respondent 2 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 Ethernet Raw Mode -RFC 4448 SAToP -RFC 4553 CESoPSN -RFC 5086 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - 5000 Ethernet Raw Mode -RFC 4448 - 1000 SAToP -RFC 4553 - 50 CESoPSN -RFC 5086 - 1600 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. Ethernet Tagged Mode -RFC 4448: Control Word (Type 1), Router Alert Label (Type 2), TTL Expiry (Type 3) Ethernet Raw Mode -RFC 4448: Control Word (Type 1), Router Alert Label (Type 2), TTL Expiry (Type 3) CESoPSN -RFC 5086: TTL Expiry (Type 3) 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Tagged Mode -RFC 4448: ICMP Ping, LSP Ping Ethernet Raw Mode -RFC 4448: ICMP Ping, LSP Ping SAToP -RFC 4553: LSP PingDel Regno & Malis Informational [Page 21]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 CESoPSN -RFC 5086: LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode) Used in Network: No Response 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. I'm very interested in this work as we continue to experience interop challenges particularly with newer vendors to the space who are only implementing VCCV via control word. Vendors who have tailed their MPLS OAM set specifically to the cell backhaul space and mandatory CW have been known to fall into this space. That's all I've got.A.3. Respondent 3 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 Ethernet Raw Mode -RFC 4448 Frame Relay (Port Mode) -RFC 4619 Frame Relay (1:1 Mode) -RFC 4619 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - 800 Ethernet Raw Mode -RFC 4448 - 50 Frame Relay (Port Mode) -RFC 4619 - 2 Frame Relay (1:1 Mode) -RFC 4619 - 2Del Regno & Malis Informational [Page 22]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. No Response 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. No Response 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode) Used in Network: No Response 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. No ResponseA.4. Respondent 4 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 Ethernet Raw Mode -RFC 4448 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - 1000 Ethernet Raw Mode -RFC 4448 - 200Del Regno & Malis Informational [Page 23]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. No Response 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Tagged Mode -RFC 4448: LSP Ping Ethernet Raw Mode -RFC 4448: LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode) Used in Network: No Response 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. EQUIPMENT MANUFACTURER does not provide options to configure VCCV control-channel and its sub options for LDP based L2Circuits. How can we achieve end-to-end management and fault detection of PW without VCCV in such cases?A.5. Respondent 5 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 Ethernet Raw Mode -RFC 4448 PPP -RFC 4618 Frame Relay (Port Mode) -RFC 4619 Frame Relay (1:1 Mode) -RFC 4619 Fiber Channel (Port Mode) - "Encapsulation Methods for Transport of Fibre Channel" (nowRFC 6307)Del Regno & Malis Informational [Page 24]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - 4000 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. Ethernet Tagged Mode -RFC 4448: Control Word (Type 1), Router Alert Label (Type 2) Ethernet Raw Mode -RFC 4448: Control Word (Type 1), Router Alert Label (Type 2) 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Tagged Mode -RFC 4448: LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode) Used in Network: Ethernet (Tagged Mode), Ethernet (Raw Mode) 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. No ResponseA.6. Respondent 6 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 Ethernet Raw Mode -RFC 4448Del Regno & Malis Informational [Page 25]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - 1000+ Ethernet Raw Mode -RFC 4448 - 500 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. Ethernet Tagged Mode -RFC 4448: Control Word (Type 1) Ethernet Raw Mode -RFC 4448: Control Word (Type 1) 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Tagged Mode -RFC 4448: ICMP Ping, LSP Ping Ethernet Raw Mode -RFC 4448: ICMP Ping, LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode) Used in Network: Ethernet (Tagged Mode), Ethernet (Raw Mode) 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. No ResponseDel Regno & Malis Informational [Page 26]
RFC 7079 PW/VCCV Implementation Survey Results November 2013A.7. Respondent 7 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Raw Mode -RFC 4448 ATM (1:1 Mode) -RFC 4717 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Raw Mode -RFC 4448 - 20 ATM (1:1 Mode) -RFC 4717 - 100 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. No Response 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Raw Mode -RFC 4448: LSP Ping ATM (1:1 Mode) -RFC 4717: LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode), PPP, HDLC, Frame Relay (Port Mode), ATM (N:1 Cell Mode) Used in Network: No Response 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share.Del Regno & Malis Informational [Page 27]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 We are using L2PVPN AToM like-to-like models - ATMoMPLS - EoMPLS ATMoMPLS : This service offered for transporting ATM cells over IP/MPLS core with Edge ATM CE devices including BPX, Ericsson Media Gateway etc. This is purely a Port mode with cell-packing configuration on it to have best performance. QoS marking is done for getting LLQ treatment in the core for these MPLS encapsulated ATM packets. EoMPLS: This service offered for transporting 2G/3G traffic from network such as Node-B to RNC's over IP/MPLS backbone core network. QoS marking is done for getting guaranteed bandwidth treatment in the core for these MPLS encapsulated ATM packets. In addition to basic L2VPN service configuration, these traffic are routed via MPLS TE tunnels with dedicated path and bandwidth defined to avoid bandwidth related congestion.A.8. Respondent 8 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Raw Mode -RFC 4448 ATM (AAL5 SDU Mode) -RFC 4717 TDMoIP -RFC 5087 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Raw Mode -RFC 4448 - In-Use ATM (AAL5 SDU Mode) -RFC 4717 - In-Use TDMoIP -RFC 5087 - In-Use 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. Ethernet Raw Mode -RFC 4448: Control Word (Type 1) ATM (AAL5 SDU Mode) -RFC 4717: Router Alert Label (Type 2)Del Regno & Malis Informational [Page 28]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Raw Mode -RFC 4448: LSP Ping ATM (AAL5 SDU Mode) -RFC 4717: LSP Ping TDMoIP -RFC 5087: LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Raw Mode), ATM (N:1 Cell Mode) Used in Network: Ethernet (Raw Mode), ATM (N:1 Cell Mode) 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. PW VCCV is very useful tool for finding faults in each PW channel. Without this we can not find fault on a PW channel. PW VCCV using BFD is another better option. Interoperability challenges are with Ethernet OAM mechanism.A.9. Respondent 9 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 Frame Relay (1:1 Mode) -RFC 4619 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - 19385 Frame Relay (1:1 Mode) -RFC 4619 - 15757Del Regno & Malis Informational [Page 29]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. Frame Relay (1:1 Mode) -RFC 4619: Control Word (Type 1) 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Frame Relay (1:1 Mode) -RFC 4619: LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode), PPP, HDLC, Frame Relay (Port Mode), ATM (N:1 Cell Mode) Used in Network: No Response 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. No ResponseA.10. Respondent 10 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Raw Mode -RFC 4448 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Raw Mode -RFC 4448 - 325 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. Ethernet Raw Mode -RFC 4448: Control Word (Type 1)Del Regno & Malis Informational [Page 30]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Raw Mode -RFC 4448: ICMP Ping, LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: No Response Used in Network: No Response 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. No ResponseA.11. Respondent 11 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 Ethernet Raw Mode -RFC 4448 PPP -RFC 4618 HDLC -RFC 4618 Frame Relay (1:1 Mode) -RFC 4619 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - 2000 Ethernet Raw Mode -RFC 4448 - 100 PPP -RFC 4618 - 500 Frame Relay (1:1 Mode) -RFC 4619 - 200Del Regno & Malis Informational [Page 31]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. No Response 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Tagged Mode -RFC 4448: ICMP Ping, LSP Ping Ethernet Raw Mode -RFC 4448: ICMP Ping, LSP Ping Frame Relay (1:1 Mode) -RFC 4619: ICMP Ping, LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode), PPP, HDLC Used in Network: Ethernet (Tagged Mode) 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. No ResponseA.12. Respondent 12 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Raw Mode -RFC 4448 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Raw Mode -RFC 4448 - 50000Del Regno & Malis Informational [Page 32]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. Ethernet Raw Mode -RFC 4448: Control Word (Type 1), Router Alert Label (Type 2), TTL Expiry (Type 3) 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. No Response 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode) Used in Network: Ethernet (Tagged Mode), Ethernet (Raw Mode) 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. No ResponseA.13. Respondent 13 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 Ethernet Raw Mode -RFC 4448 Frame Relay (1:1 Mode) -RFC 4619 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - 3 Ethernet Raw Mode -RFC 4448 - 10-20Del Regno & Malis Informational [Page 33]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 ATM (1:1 Mode) -RFC 4717 - 3 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. Ethernet Tagged Mode -RFC 4448: Control Word (Type 1), TTL Expiry (Type 3) Ethernet Raw Mode -RFC 4448: Control Word (Type 1), TTL Expiry (Type 3) Frame Relay (1:1 Mode) -RFC 4619: Control Word (Type 1), TTL Expiry (Type 3) 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Tagged Mode -RFC 4448: ICMP Ping, LSP Ping Ethernet Raw Mode -RFC 4448: ICMP Ping, LSP Ping Frame Relay (1:1 Mode) -RFC 4619: ICMP Ping, LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode), PPP, HDLC, Frame Relay (Port Mode), ATM (N:1 Cell Mode) Used in Network: Ethernet (Tagged Mode), Ethernet (Raw Mode), Frame Relay (Port Mode) 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. No ResponseDel Regno & Malis Informational [Page 34]
RFC 7079 PW/VCCV Implementation Survey Results November 2013A.14. Respondent 14 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 Ethernet Raw Mode -RFC 4448 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - 150 Ethernet Raw Mode -RFC 4448 - 100 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. Ethernet Tagged Mode -RFC 4448: Control Word (Type 1), Router Alert Label (Type 2) Ethernet Raw Mode -RFC 4448: Control Word (Type 1), Router Alert Label (Type 2) 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Tagged Mode -RFC 4448: LSP Ping Ethernet Raw Mode -RFC 4448: LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode), PPP, HDLC, Frame Relay (Port Mode) Used in Network: Ethernet (Tagged Mode), Ethernet (Raw Mode)Del Regno & Malis Informational [Page 35]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. No ResponseA.15. Respondent 15 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 Ethernet Raw Mode -RFC 4448 Frame Relay (1:1 Mode) -RFC 4619 ATM (1:1 Mode) -RFC 4717 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - 20,000 Ethernet Raw Mode -RFC 4448 - 1000 Frame Relay (1:1 Mode) -RFC 4619 - 30,000 ATM (1:1 Mode) -RFC 4717 - 20,000 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. Ethernet Tagged Mode -RFC 4448: TTL Expiry (Type 3) Ethernet Raw Mode -RFC 4448: TTL Expiry (Type 3) Frame Relay (1:1 Mode) -RFC 4619: TTL Expiry (Type 3) ATM (1:1 Mode) -RFC 4717: TTL Expiry (Type 3)Del Regno & Malis Informational [Page 36]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Tagged Mode -RFC 4448: LSP Ping Ethernet Raw Mode -RFC 4448: LSP Ping Frame Relay (1:1 Mode) -RFC 4619: LSP Ping ATM (1:1 Mode) -RFC 4717: LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: No Response Used in Network: No Response 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. COMPANY has deployed several MPLS network elements, from multiple vendors. COMPANY is seeking a uniform implementation of VCCV Control Channel (CC) capabilities across its various vendor platforms. This will provide COMPANY with significant advantages in reduced operational overheads when handling cross-domain faults. Having a uniform VCCV feature implementation in COMPANY multi-vendor network leads to: o Reduced operational cost and complexity o Reduced OSS development to coordinate incompatible VCCV implementations. o Increased end-end service availability when handing faults. In addition, currently some of COMPANY deployed VCCV traffic flows (on some vendor platforms) are not guaranteed to follow those of the customer's application traffic (a key operational requirement). As a result, the response from the circuit ping cannot faithfully reflect the status of the circuit. This leads to ambiguity regarding the operational status of our networks. An in-band method is highly preferred, with COMPANY having a clear preference for VCCV Circuit Ping using PWE Control Word. This preference is being pursued with each of COMPANY vendors.Del Regno & Malis Informational [Page 37]
RFC 7079 PW/VCCV Implementation Survey Results November 2013A.16. Respondent 16 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 Ethernet Raw Mode -RFC 4448 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - 100 Ethernet Raw Mode -RFC 4448 - 100 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. No Response 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Tagged Mode -RFC 4448: ICMP Ping, LSP Ping Ethernet Raw Mode -RFC 4448: ICMP Ping, LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: Ethernet (Tagged Mode), Ethernet (Raw Mode) Used in Network: No Response 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share.Del Regno & Malis Informational [Page 38]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 Using CV is not required at the momentA.17. Respondent 17 2. In your network in general, across all products, please indicate which pseudowire encapsulations your company has implemented. Ethernet Tagged Mode -RFC 4448 SAToP -RFC 4553 Frame Relay (Port Mode) -RFC 4619 Frame Relay (1:1 Mode) -RFC 4619 ATM (N:1 Mode) -RFC 4717 ATM (1:1 Mode) -RFC 4717 CESoPSN -RFC 5086 TDMoIP -RFC 5087 3. Approximately how many pseudowires are deployed of each encapsulation type. Note, this should be the number of pseudowires in service, carrying traffic, or pre-positioned to do so. ***Note, please indicate "In-Use" for any PW Encap Types which you are using but cannot provide a number. Ethernet Tagged Mode -RFC 4448 - >40k Ethernet Raw Mode -RFC 4448 - In-Use SAToP -RFC 4553 - >20k Frame Relay (Port Mode) -RFC 4619 - >5k Frame Relay (1:1 Mode) -RFC 4619 - >5k ATM (N:1 Mode) -RFC 4717 - >50k ATM (1:1 Mode) -RFC 4717 - >50k CESoPSN -RFC 5086 - >20k TDMoIP -RFC 5087 - >20kDel Regno & Malis Informational [Page 39]
RFC 7079 PW/VCCV Implementation Survey Results November 2013 4. Please indicate which VCCV Control Channel is used for each encapsulation type. Understanding that users may have different networks with varying implementations, for your network in general, please select all which apply. Ethernet Tagged Mode -RFC 4448: Control Word (Type 1) SAToP -RFC 4553: Control Word (Type 1) Frame Relay (Port Mode) -RFC 4619: Control Word (Type 1) Frame Relay (1:1 Mode) -RFC 4619: Control Word (Type 1) ATM (N:1 Mode) -RFC 4717: Control Word (Type 1) ATM (1:1 Mode) -RFC 4717: Control Word (Type 1) 5. Please indicate which VCCV Connectivity Verification types are used in your networks for each encapsulation type. Ethernet Tagged Mode -RFC 4448: LSP Ping SAToP -RFC 4553: LSP Ping Frame Relay (Port Mode) -RFC 4619: LSP Ping Frame Relay (1:1 Mode) -RFC 4619: LSP Ping ATM (N:1 Mode) -RFC 4717: LSP Ping ATM (1:1 Mode) -RFC 4717: LSP Ping 6. Please indicate your network's support of and use of the Control Word for encapsulations for which the Control Word is optional. Supported by Network/Equipment: ATM (N:1 Cell Mode) Used in Network: No Response 7. Please use this space to provide any feedback regarding PW and VCCV deployments, VCCV interoperability challenges, this survey or any network/vendor details you wish to share. BFD VCCV Control Channel is not indicated in the survey (may be required for PW redundancy purpose)Del Regno & Malis Informational [Page 40]
RFC 7079 PW/VCCV Implementation Survey Results November 2013Authors' Addresses Christopher N. "Nick" Del Regno (editor) Verizon Communications, Inc. 400 International Pkwy Richardson, TX 75081 US EMail: nick.delregno@verizon.com Andrew G. Malis (editor) Consultant EMail: agmalis@gmail.comDel Regno & Malis Informational [Page 41]
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