Thank You, Magnus, for your review and suggestions. We will refresh the document after we get responses from few other reviewers and close with them. We will keep you posted.
Regards, Ilango -----Original Message----- From: Magnus Westerlund <[email protected]> Sent: Monday, January 27, 2020 1:14 AM To: Ganga, Ilango S <[email protected]>; [email protected] Cc: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected] Subject: Re: [nvo3] Magnus Westerlund's Discuss on draft-ietf-nvo3-geneve-14: (with DISCUSS) Hi, On Fri, 2020-01-24 at 23:30 +0000, Ganga, Ilango S wrote: > Magnus>> I think the above text is not particullar clear on what the issue is. > Just to > make sure I am not missunderstanding anything. So the Geneve encapsulating > source node to avoid this issue has basically two possible implementation path > to correctly handle ICMP messages or any other return path traffic that > reverses > the outer IP/UDP headers. Either it has a general listener that first try to > determine if the packet incoming is return traffic, or one only uses "free" > UDP > ports on the outer IP address used when encapsulating. > > I am fine with you leaving how to solve this up to the implementations, but > you > at least need to make the issue clear to the implementer. Also, I think it is > dangerouse to make assumption that the outer IP address will not be used for > anything else then GENEVE encapsulated tunnel traffic. > > IG>> <Response> Instead of the previously suggested text, we will replace with > the revised text below that is more specific in addressing the issue. > > Add the following text to end of Section 3.3 source port definition (new > paragraph): > “If Geneve traffic is shared with other UDP listeners on the same IP address, > tunnel endpoints SHOULD implement a mechanism to ensure ICMP return traffic > arising from network errors is directed to the correct listener. Actual > definition of the mechanism is beyond the scope of this document.” > </Response> > The above works for me. Ship it and I will clear. Cheers Magnus Westerlund ---------------------------------------------------------------------- Networks, Ericsson Research ---------------------------------------------------------------------- Ericsson AB | Phone +46 10 7148287 Torshamnsgatan 23 | Mobile +46 73 0949079 SE-164 80 Stockholm, Sweden | mailto: [email protected] ---------------------------------------------------------------------- _______________________________________________ nvo3 mailing list [email protected] https://www.ietf.org/mailman/listinfo/nvo3
