[Mini-NDN] [EXT] NoRoute error

[Junxiao Shi]

Hi Nazatul

NFD does not forward any Interest starting with /localhost to a remote
node. Try a different name prefix, such as a prefix under the one you used
in ping server.

Yours, Junxiao

On Sun, Aug 2, 2020 at 22:50 Nazatul Haque Sultan via Mini-NDN <
mini-ndn at lists.cs.ucla.edu> wrote:

> *External Email*
> Dear All,
>
> I am facing an issue with miniNDN. I was trying to work on a simple
> topology file, e.g. *a->c->b*, where *a *publishes content *gpl3 * using *"ndnputchunks
> -p /localhost/demo/gpl3 < /usr/share/common-licenses/GPL-3 | ndndump -v>
> outA &"* and* b* request for it using "*ndncatchunks /localhost/demo/gpl3
> | ndndump -v> outB &*"*. *I have also attached dump files of node a and
> b.
>
> *Issue*: when I used "*a nfdc route list*" and "*b nfdc route list*"
> commands, I can see that node a has generated 8 chunks. However, node b is
> showing *NoRoute error* (I am appending its results below). I tried ping
> commands and was getting successful ping results for the same topology.
>
> My questions are:
>
> 1. I can see in the dump files some interest and data packets. As per the
> output of the command " *b nfdc route list*", there is no route between a
> to b and vice versa. Are the interest and data packets of the dump files
> related to the actual content *gpl3* or something else?
>
> 2. Why does ping is working while the *ndncatchunks* is showing NoRoute
> error?
>
> Can someone please give me any hint on these? Thank you in advance.
>
> mini-ndn> a nfdc route list
> Loading input ...
>
> *Created 8 chunks for prefix /localhost/demo/gpl3Data published with name:
> /localhost/demo/gpl3/%FD%00%00%01s%B1%E4%9A%BE*
> ndndump: listening on a-eth0, link-type EN10MB (Ethernet)
> ndndump: using pcap filter: (ether proto 0x8624) or (tcp port 6363) or
> (udp port 6363) or (udp port 56363)
> prefix=/ndn/a-site/KEY nexthop=262 origin=app cost=0 flags=capture
> expires=never
> prefix=/ndn/a-site/KEY nexthop=266 origin=app cost=0 flags=capture
> expires=never
> prefix=/ndn/a-site/%C1.Router/cs/a/KEY nexthop=262 origin=app cost=0
> flags=capture expires=never
> prefix=/ndn/a-site/%C1.Router/cs/a/KEY nexthop=266 origin=app cost=0
> flags=capture expires=never
>
> mini-ndn> b nfdc route list
> *ERROR: Could not retrieve data for /localhost/demo/gpl3/32=metadata,
> reason: NoRoute*
> ndndump: listening on b-eth0, link-type EN10MB (Ethernet)
> ndndump: using pcap filter: (ether proto 0x8624) or (tcp port 6363) or
> (udp port 6363) or (udp port 56363)
> prefix=/ndn/a-site/a nexthop=261 origin=nlsr cost=20 flags=capture
> expires=3528s
> prefix=/ndn/a-site/%C1.Router/cs/a nexthop=261 origin=nlsr cost=20
> flags=capture expires=3528s
> prefix=/ndn/b-site/KEY nexthop=262 origin=app cost=0 flags=capture
> expires=never
> prefix=/ndn/b-site/KEY nexthop=266 origin=app cost=0 flags=capture
> expires=never
> prefix=/ndn/b-site/%C1.Router/cs/b/KEY nexthop=262 origin=app cost=0
> flags=capture expires=never
>
> Regards,
> Nazatul
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