[Mini-NDN] [EXT]Re: NDN benchmark topology

[Junxiao Shi]

Hi Jiacheng

I sent your report to NDN Testbed Operations.
They have corrected this disparity.

Yours, Junxiao


On Fri, Apr 2, 2021, 14:54 JIACHENG HOU <houdemi at outlook.com> wrote:

> *External Email*
>
> Hi Junxiao,
>
>
>
> Thank you so much for your help. It helps me a lot.
>
>
>
> I checked the web page: https://ndndemo.arl.wustl.edu/. It seems like the
> latest NDN testbed contains 37 NDN nodes. However, the visual view (at the
> bottom of the page) of the testbed topology only contains 35 NDN nodes. I
> am having trouble drawing a visual of NDN topology. I am wondering if a
> visual view of the latest NDN testbed is available?
>
>
>
> Again, thank you very much.
>
>
>
>
>
> Best wishes,
>
> Jiacheng
>
> *From: *Junxiao Shi <shijunxiao at email.arizona.edu>
> *Date: *Friday, April 2, 2021 at 1:54 PM
> *To: *JIACHENG HOU <houdemi at outlook.com>
> *Cc: *"Saurab Dulal (sdulal)" <sdulal at memphis.edu>, "
> mini-ndn at lists.cs.ucla.edu" <mini-ndn at lists.cs.ucla.edu>
> *Subject: *Re: [EXT]Re: [Mini-NDN] NDN benchmark topology
>
>
>
> Hi Jiacheng
>
>
>
> 2. I am planning to have a visual view of ndn topologies. However, I am
> not sure how to show the NDN topology in a 2-dimensional grid. I search
> online and only find a NDN testbed (
> https://www.arl.wustl.edu/~jdd/ndnstatus/ndn_prefix/tbs_ndnx_new.html)
> that has a good visual view. I am thinking about how to draw a visual view
> of NDN topologies?
>
>
>
> If you look at the top of that page, it's the testbed status as of 2015.
>
> The current testbed status page is at https://ndndemo.arl.wustl.edu/
>
>
>
> 1. How to set the hyperbolic coordinates for ndn nodes if I want to custom
> topology in mini-ndn. I am thinking that I can’t randomly pick some numbers
> as hyperbolic coordinates.
>
>
>
> I asked this very question to NLSR maintainers.
>
> The mathematics model is at
> https://www.caida.org/publications/papers/2010/hyperbolic_geometry_complex/
> and https://www.caida.org/tools/utilities/hyperbolic-graph-generator/ ,
> but I cannot understand them.
>
> The actual coordinates used on the testbed is determined by querying the
> BGP AS number of each node in this dataset:
> https://www.caida.org/research/routing/greedy_forwarding_ndn/AS_network_Aug13-Sep13_main.coor
>
> However, this dataset was generated in 2013, and many AS numbers active
> today after missing. I personally have at least 3 servers having AS numbers
> not in this dataset.
>
>
>
> 3. I cloned the mini-ndn git version
> 76dbe6633c10f4e833c9329482b10b8b44a0417d rather than the newest version. In
> the older version, topologies are not the same as topologies in the newest
> mini-ndn git version. The topology "current-testbed.conf
> <https://github.com/named-data/mini-ndn/blob/76dbe6633c10f4e833c9329482b10b8b44a0417d/topologies/current-testbed.conf>"
> and "minindn.testbed.conf
> <https://github.com/named-data/mini-ndn/blob/76dbe6633c10f4e833c9329482b10b8b44a0417d/topologies/minindn.testbed.conf>"
> are different from the latest testbed. I am wondering if topologies
> “current-testbed.conf” and "minindn.testbed.conf" are actual NDN testbed
> topologies?
>
>
>
> You can see the current testbed configuration from one of these resources:
>
>    - Ansible variables for each node:
>    https://github.com/WU-ARL/NDN_Ansible/tree/master/host_vars
>    - JSON document describing the testbed nodes:
>    https://ndndemo.arl.wustl.edu/testbed-nodes.json
>    - Live NLSR status: https://nlsr-status.ndn.today/
>
>
>
> Yours, Junxiao
>
>
>
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