link avoidance

[owen at delong.com (Owen DeLong)]

The most common place where I have encountered that would involve differing AUPs on different links.

For example, if one has a link which is built on an amateur radio layer 1, one cannot carry commercial, pornographic, encrypted, or certain other kinds of traffic on that link.

I believe Internet2 vs. public transit may also pose some such requirements.

Other situations I?ve seen involve data privacy concerns and/or security zone issues.

Common? Not in my experience.

Usually done with a combination of ACLs, Routing Policy, etc.

Owen

> On May 6, 2015, at 3:56 PM, Randy Bush <randy at psg.com> wrote:
> 
> a fellow researcher wants
> 
>> to make the case that in some scenarios it is very important for a
>> network operator to be able to specify that traffic should *not*
>> traverse a certain switch/link/group of switches/group of links
>> (that's true right?). Could you give some examples? Perhaps point
>> me to relevant references?
> 
> if so, why? security?  congestion?  other?  but is it common?  and, if
> so, how do you do it?
> 
> randy