Re: [Idr] I-D Action: draft-ietf-idr-next-hop-capability-03.txt

[<[e-mail]>]

Hi Randy,

> From: Randy Bush [mailto:[e-mail]]
> 
 > hey bruno,
 > 
 > an example
 > 
 > the new next hop may not be in a shared trust domain

I generally agree that there are cases where you don't trust the source of the information. In such case, you can filter it a priori or a posteriori.
That doesn't mean that the ability to share an information is bad.
 
 > at an exchange point, A tells B to to use C as the next hop, thereby
 > avoiding carrying B's outbound traffic

Another point related to transitive trust.
If I trust A, and A tells me he can provide me a car for next WE, I trust him. Regardless of whether he owns the car, or rent/borrow it from some else (who I may not trust/know).
That's also applicable to a company which may outsource some part of the job, although with companies trust tend to be replaced by legal contract and penalty.
But it's also fine to have partial trust, including refusing any transitivity.

Note that your example is not specific to this attribute/information.  You may not trust the route itself i.e. the ability of C to adequately forward your traffic.

--Bruno
 
 > randy

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