[Contiki-developers] RPL Route Repair

[Ast D. (astdom01) <ast...@st...>]

Dear all

I have a question about routing with rpl. I simulate a very simpel case with cooja where every sender sends one message to a hard coded receiver every 30 min. As long as I do not move a mote in the simulation I have a success rate of about 90% with the selected medium. When I move motes (2 motes of 50) this rate decreases to less then 75%. I dont delete motes and after the move all motes still have a well connectivity to other nodes - but to others then before. I expected the success rate to increase back to 90% again after a while but after 5 to 6 simulation hours it is still less then 80%. I use the RPL configuration below. I tried different values of RPL_CONF_DEFAULT_LIFETIME_UNIT, RPL_CONF_DEFAULT_LIFETIME and RPL_CONF_DIO_INTERVAL_DOUBLINGS to achieve this behaviour but without success. Can I achieve healing routes by changeing RPL parameters or is there somethings else to consider?

Thank you for any hint.

Best regards, Dominic


#undef NETSTACK_CONF_RDC_CHANNEL_CHECK_RATE
#define NETSTACK_CONF_RDC_CHANNEL_CHECK_RATE 8

#undef RPL_CONF_DIO_INTERVAL_MIN
#define RPL_CONF_DIO_INTERVAL_MIN 12

#undef RPL_CONF_DIO_INTERVAL_DOUBLINGS
#define RPL_CONF_DIO_INTERVAL_DOUBLINGS 9

#undef RPL_CONF_DAO_LATENCY
#define RPL_CONF_DAO_LATENCY (CLOCK_SECOND * 4)

#undef RPL_CONF_DIO_REDUNDANCY
#define RPL_CONF_DIO_REDUNDANCY         10

#undef RPL_CONF_DEFAULT_LIFETIME_UNIT
#define RPL_CONF_DEFAULT_LIFETIME_UNIT 0xffff

#undef RPL_CONF_DEFAULT_LIFETIME
#define RPL_CONF_DEFAULT_LIFETIME 0xff

#undef UIP_CONF_ND6_SEND_NA
#define UIP_CONF_ND6_SEND_NA        0