CTP Routing, was RE: [Tinyos-help] Antitheft compile warnings on new platform

[Philip Levis]

On Aug 1, 2007, at 9:20 AM, Todd Roper wrote:

>
> I went ahead and reset the two suspect nodes yesterday and as  
> expected,
> they started sending data into the network again.  This morning, I
> discovered that one of them was trying to send through a node 2 this
> time.  (node 2 is not in the network).  It does retry 30 times every 5
> minutes (that is my programmed interval for reporting).
>
> I disconnected the Root node and then powered it back up after a few
> minutes.  I have attached a small log file showing some extra bytes in
> the beacon packet every once in a while.  I have also noticed that  
> I get
> bits shifting in the messages every once in a while (seems odd given
> that there is a checksum).
>
> I am wondering if there could be packet corruption causing routing
> corruption????
>
> One other note is that once the node was stuck on trying to send to  
> Node
> 2, I noticed it no longer sends out its routing table info every  
> once in
> a while.
>
> Wondering where to look next...
>
> Best regards,


This is interesting. Packet corruption definitely seems like a  
possibility. But the fact that it no longer sends routing beacons is  
disturbing. This suggests perhaps a deeper issue of a memory access  
bug somewhere.

Any information/data/traces you could provide would be greatly  
appreciated.

Phil