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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Dear all,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>within our research we noticed that the „best-route“ forwarding strategy of NFD differs significantly from ndnSIM 1.0. For instance, when a link failure or congestion occurs, the forwarder will not learn anything about the underlying issue. The client will re-issue after the interests times out (depending on the interest timeout, this could be rather long), and the forwarder will try the very same outgoing face again (which is probably still congested).<o:p></o:p></p><p class=MsoNormal>With ndnSIM 1.0, the notion of “red, green, yellow faces” in combination with NACKs was working very well. I understand that the idea for NFD is to use NLSR, though I haven’t seen NLSR active/working in ndnSIM yet. Is there ongoing work, are there any examples available?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards,<o:p></o:p></p><p class=MsoNormal>Christian<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>