Dale, On 6/14/2017 5:54 PM, Dale R. Worley wrote: > Daniel Migault <[email protected]> writes: >> The Geneve Header can include some options. >> >> I am wondering if the options are all provided by the tunnel terminating >> point (NVE), or if we have to consider the following cases: >> - on path Geneve elements can include/remove/update Geneve options on >> the fly >> - on path Geneve elements can re-order the options > I look at this question as parallel to the question "On a path, can the > options in an IP header be added/removed/updated/reordered?"
If there are parallels to IP, then just as IP *forwarding elements* might modify some IP options in transit, the same would be true for NVO3. However, I'm not aware of any NVO3 forwarding elements - only the endpoints of the tunnel. IP forwarding plane elements should never modify any part of an IP payload*. Joe *When IP packet contents are modified by NATs or filters, those devices are reasonable only when we consider them acting on behalf of the endpoint, IMO. A true "in the network" device should never modify IP payloads. > > And the answer to that is that in general, IP options aren't intended to > be modified in transit. But there are some headers (such as Source > Route) that are *intended* to be modified in transit. And some transit > devices are intended to modify IP options. It depends on the specifics > of the situation, and the options involved. > > Dale > > _______________________________________________ > nvo3 mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/nvo3 _______________________________________________ nvo3 mailing list [email protected] https://www.ietf.org/mailman/listinfo/nvo3
