[Bier] Questions for draft-ietf-bier-multicast-http-response-06

zhang.zheng@zte.com.cn Mon, 17 January 2022 01:56 UTC

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Subject: [Bier] Questions for draft-ietf-bier-multicast-http-response-06
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Hi authors, 
Thank you for your draft! IMO this draft is very interesting.
I know little about HTTP, so I’m not clear with some contents in the draft.
My questions are: 
1, if there is multicast signaling between CNAP and SNAP in the existed situation without BIER deployment, PIM or other protocol?
2, there is connection based on TCP/UDP between client and server, right? This draft will terminate the connection on CNAP and SNAP. If the payload of the TCP/UDP packet will be the payload of encapsulated BIER packet? The “Service Name” is still in this payload, right?
3, seems like the “Service Name” will be the key for BFIR and BFER to setup the mapping relationship, will this key will be exchanged among all the BFIR and BFER in case of there is no SDN/PCE controller?
4, the “PATH ID” seems like a value of local significance, if this value is used for PCE controller to distribute the mapping relation of “Service Name” and associated BFERs? This value won’t be signaling among BFIR and BFERs, right?
Much appreciate for your answer!
Best regards,
Sandy