Heard back from a QUIC expert.

As long as we do not want to use QUIC over HTTP, we can use whatever UDP port we want to carry QUIC. I would note that since we may want to have the same node provide connectionless (UDP-based) LISP and connection orient (TCP or QUIC) LISP, it seems that if we want a well known UDP destination port it should be different from 4342.

Also, when we use QUIC for LISP we do need to specify what the destination connection-ID (the QUIC internal ID) will be. There is a lot of flexibility on that.

Yours,
Joel

On 3/22/2022 9:09 AM, Dino Farinacci wrote:
I had two comments.

Second comment:


In the draft, it should be stated that LISP uses QUIC port 4342. That is the demux layer for QUIC so it can deliver received LISP packets to the LISP application. Joel has asked a QUIC expert how to phrase this.

I believe, but not sure, that if you run LISP over QUIC, the header has a single UDP header, which is used for QUIC.

Dino

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