[Ndn-interest] Same LSDB in entire network?

Tanusree Chatterjee tnsr.chatterjee at gmail.com
Mon Jul 25 04:01:10 PDT 2016

Thank you for the responses. I think my confusions have been resolved.

Thanks & Regards,
Tanusree Chatterjee
On Jul 22, 2016 4:26 AM, "Lan Wang (lanwang)" <lanwang at memphis.edu> wrote:

> Having the same set of LSAs is simply an algorithmic requirement for
> routing convergence.  What specific security threat do you see this
> prevents?
> Lan
> On Jul 19, 2016, at 10:54 AM, Tanusree Chatterjee <
> tnsr.chatterjee at gmail.com> wrote:
> Thanks for the response. By security, I also meant the digest tree
> maintained by all the nodes (last version of NLSR) in the entire network
> must be same as they exchange the root digest while sending interest
> periodically to each other. So, to do the same each node in the entire
> network must have the common LSDB.
> As a simple scenario of 5 nodes I was running in mini ndn emulator, the
> nlsrc status of all nodes show the same LSDB, which consists of all the
> LSAs of each node in the network.
> On Jul 19, 2016 7:09 PM, "Lan Wang (lanwang)" <lanwang at memphis.edu> wrote:
>> Tanusree,
>> Every node in NLSR maintains an LSDB (i.e. the topology of the entire
>> network) since NLSR is a link-state routing protocol.  If the network has
>> converged, all the LSDBs should be the same.  Every LSA is signed by its
>> originator and can be verified using a trust model to make sure that the
>> LSA is indeed originated by that origin router.  This is a security benefit
>> provided by NDN’s data-centric security model.  Is this what you mean by
>> “this synchronization of same LSDB in the entire network helps in
>> security"?
>> Lan
>> On Jul 18, 2016, at 9:25 AM, Tanusree Chatterjee <
>> tnsr.chatterjee at gmail.com> wrote:
>> Hi all,
>> One thing I could not be sure about that whether all the nodes in the
>> network have the common LSDB? If so, all the nodes have the idea of
>> topology of the entire network? If NLSR is concerned, so this
>> synchronization of same LSDB in the entire network helps in security also?
>> Regards,
>> Tanusree Chatterjee
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