[Nfd-dev] What link object to use on testbed?

[Lixia Zhang]

> On Aug 18, 2017, at 8:15 AM, Junxiao Shi <shijunxiao at email.arizona.edu> wrote:
> 
> Hi Lixia and John
>> 
>> I do not know what have been defined as the rules for configuring so called "region"; in this specific case the outcome does not sound correct -- REMAP router should remove forwarding hint only if the forwarding hint = /ndn/edu/ucla/remap.
> 
> No. It is necessary for a forwarding hint with a shorter prefix to match a network region with a longer name.

I do not believe that is correct.

But lets not argue here (make an agenda item for NFD call).

the most urgent thing is how to make Haitao stuff working ASAP

> Consider a large ISP with multiple POPs, such as Level 3. For a large website such as MSN, its name can be announced across the entire ISP, and be accessible with forwarding hint /level3. For a small website such as yoursunny.com <http://yoursunny.com/> , its name is announced within a single POP, and can be accessed with forwarding hint /level3/lax, or even a smaller scale such as /level3/lax/woothosting.
> 
> Requiring exact match on network region names would require every router in Level 3 network to be configured with multiple network region names in order to match every possible forwarding hint. For example, the core router at LAX POP would need at least /level3 and /level3/lax. Using search-prefix match allows the router configuration to only have the most specific /level3/lax.
> 
> I wonder if the problem is perhaps on the other side. The default prefix for the UCLA node should perhaps be more like /ndn/edu/ucla/cs.
> Yes, exactly. You can even be more specific and include the router name as part of the network region name.
> 
> Then the forwarding hint included in the example could be /ndn/edu/ucla/cs and REMAP would not remove it.
> Yes.
> 
> 
> I’ve never completely understood the semantics of the network region. Is it written down somewhere?
> See NFD developer guide. I'm in the process of updating it from Link objects to forwarding hint (watch https://redmine.named-data.net/issues/4055 <https://redmine.named-data.net/issues/4055> for progress), but concept is the same.
> 
> Yours, Junxiao

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