Hi,

UDPEcho periodically sends Statistics packet but I cannot get the  
meaning of few of them:

What is the meaning of the following two fields in "ip_statistics_t" ?

        nx_uint8_t       rx_drop         L2 frags dropped due to 6lowpan failure
        nx_uint8_t       tx_drop         L2 frags dropped due to link failures

In particular, what are "6lowpan failure" and "link failure" and when  
those occur?

In my tests 6lowpan failures never occur and link failures are about 5  
each hour (5 each statistics packet)


What is the meaning of the following two fields in  
"route_statistics_t" ?
        nx_uint16_t      parent_metric   additive path cost of the top entry in 
 
the routing table (10*ETX)
        nx_uint16_t      parent_etx      additive path cost of entry currently 
being  
used as the Primary Default Route (10*ETX)

Is it true that, when the top entry has better path cost, the parent  
will be changed according with the address of the top entry?


Many thanks
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