The IETF pim working group is conducting a survey in order to advance the PIM Sparse Mode spec on the IETF Standards Track, and would like input from operators. The survey ends July 20th. Please see below for more information. thank you, pim chairs Mike & Stig Introduction: PIM-SM was first published as RFC 2117 in 1997 and then again as RFC 2362 in 1998. The protocol was classified as Experimental in both of these documents. The PIM-SM protocol specification was then rewritten in whole and advanced to Proposed Standard as RFC 4601 in 2006. Considering the multiple independent implementations developed and the successful operational experience gained, the IETF has decided to advance the PIM-SM routing protocol to Draft Standard. This survey intends to provide supporting documentation to advance the Protocol Independent Multicast - Sparse Mode (PIM-SM) routing protocol from IETF Proposed Standard to Draft Standard. (Due to RFC 6410, now the intention is to progress it to Internet Standard. Draft Standard is no longer used.) This survey is issued on behalf of the IETF PIM Working Group. The responses will be collected by a neutral third-party and kept strictly confidential; only the final combined results will be published. Marshall Eubanks has agreed to anonymize the response to this Questionnaire. Marshall has a long experience with Multicast but has no direct financial interest in this matter, nor ties to any of the vendors involved. He is also a member of the IAOC, Chair of the IETF Trust and co-chair of the IETF Layer 3 VPN Working Group. Please send Questionnaire responses to his email address, marshall.eubanks@gmail.com. He requests that such responses include the string "RFC 4601 bis Questionnaire" in the subject field. Before answering the questions, please comple the following background information. Name of the Respondent: Affliation/Organization: Contact Email: Provide description of PIM deployment: Do you wish to keep the information provided confidential: Questions: 1 Have you deployed PIM-SM in your network? 2 How long have you had PIM-SM deployed in your network? Do you know if your deployment is based on the most recent RFC4601? 3 Have you deployed PIM-SM for IPv6 in your network? 4 Are you using equipment with different (multi-vendor) PIM-SM implementations for your deployment? 5 Have you encountered any inter-operability or backward- compatibility issues amongst differing implementations? If yes, what are your concerns about these issues? 6 Have you deployed both dense mode and sparse mode in your network? If yes, do you route between these modes using features such as *,*,RP or PMBR? 7 To what extent have you deployed PIM functionality, like BSR, SSM, and Explicit Tracking? 8 Which RP mapping mechanism do you use: Static, AutoRP, or BSR? 9 How many RPs have you deployed in your network? 10 If you use Anycast-RP, is it Anycast-RP using MSDP (RFC 3446) or Anycast-RP using PIM (RFC 4610)? 11 Do you have any other comments on PIM-SM deployment in your network?