Jari Arkko <[email protected]> writes: > Bob,
> >> In addition, I'm not sure I understand how a router knows that it > >> is a first hop router. IMO, this is not necessarily intended to be something routers just know automatically. The point is that routers closer to the source tend to have better knowledge about how to set the Flow Label properly. For example, access routers, which may already be screening the port for invalid MAC src addrs, improper src IP addresses, etc. Routers that do this would be well placed to do Flow Label setting as well. That all said, any router that sees a Flow Label of zero, and wants to change it to something better presumably should/can. When would that NOT be the case? > >> Are there cases where a device might > >> mistakenly believe it is a first hop router at a point where the > >> traffic has already been load-balanced to multiple routers? Are > >> there situations where the multiple first hop routers are used > >> from the same host? Sure. But why should that impact how the Flow Label is rewritten from zero to something else? > >> The document should provide some guidance about operational > >> conditions where the recommendations for the first hop router can > >> be applied. The document should state how such functionality is > >> turned on (per configuration? automatically?) and provide > >> assurances that problematic conditions can be avoided. What problematic conditions do we need to worry about here? Thomas -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
