Subject: [dtn-users] Re: Question regarding routing of status reports.
From: Jayram Deshpande <[email-masked]>
To: [email-masked]
Date: Fri, 31 Mar 2006 06:37:32 -0500
List-Id: discussion/answers list for users of the dtn reference implementation <dtn-users.mailman.dtnrg.org>

Hi Folks,

till the time i hear your thoughts, thought of updating my question a lill bit.
i think in case of using a specific convergence layer for a perticular 
interface (DTN interface),it might be helpful to update the link add command 
Which would take an interface name instead of the conv layer name, in such
cases. i think this would help the link differentiate amongst instances  of the 
conv layer Info's of multiple interfaces (?) 'coz  in that case conv layer
Infos of different interfaces might be holding say the conv layer
specific process handles (?)

JAy

> From: JAy Deshpande <[email-masked]>
> To: DTN users Group <[email-masked]>
> Subject: [dtn-users] Question regarding routing of status reports.
> Reply-To: [email-masked]
> 
> 
> --XsQoSWH+UP9D9v3l
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> 
> Hi ,
> 
> i have a question regarding the routing of bundle acks
> (status reports).
> 
> (case 1) the interface add command by defaults creates
> a DTN interface with given conv layer that starts listening
> on all physical links(i.e. actual hardware interfaces) on
> the given port.
> 
> (case 2) if we  want to use a specific conv layer on a
> specific physical link the interface add command would be
> told to listen on that physical link
> ( we give a local_host::port for that ).
> 
> and then we  can add a link to the specific destination host.
> 
> 
> my question is that in later case (case 2) when we add a
> link, it is one directional link. i.e. the receiver  node
> (which also has added a DTN interface in similar way as
> that of the DTN sender node) doesn't have a link (and corresponding
> route) to the source node. So how actually the bundle receipts
> would come/routed  back.
> 
> after digging thr', i was able to understand that 'bundle_received' event
> gets fired locally for the status report generated. but was kindda
> lost after that with above query.
> 
> do we need add a route locally at the receiver node for the bundle-source
> immediately after the budle is received.(i konw that doesn't sound good :-))
> 
> 
> any thoughts  folks..
> 

-- 
"The life is short,the vanities of world are transient
 but they alone live who live for others; the rest are 
 more dead than alive."-Swami Vivekananda
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JAyram Deshpande            www.ent.ohiou.edu/~jayram
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