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] ----------------------------------------------------------------------
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