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

[JIACHENG HOU]

Hi Junxiao,

Thank you very much!!!

Best wishes,
Jiacheng
________________________________
From: Junxiao Shi <shijunxiao at email.arizona.edu>
Sent: Saturday, April 3, 2021 9:34:28 PM
To: JIACHENG HOU <houdemi at outlook.com>
Cc: Saurab Dulal (sdulal) <sdulal at memphis.edu>; sepehr abdous via Mini-NDN <mini-ndn at lists.cs.ucla.edu>
Subject: Re: [EXT]Re: [Mini-NDN] NDN benchmark topology

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<mailto: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<mailto:shijunxiao at email.arizona.edu>>
Date: Friday, April 2, 2021 at 1:54 PM
To: JIACHENG HOU <houdemi at outlook.com<mailto:houdemi at outlook.com>>
Cc: "Saurab Dulal (sdulal)" <sdulal at memphis.edu<mailto:sdulal at memphis.edu>>, "mini-ndn at lists.cs.ucla.edu<mailto:mini-ndn at lists.cs.ucla.edu>" <mini-ndn at lists.cs.ucla.edu<mailto: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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