CC2538: znp 3.0.1 ZDSECMGR_TC_DEVICE_MAX issue

Daniele,

I recommend you look at this page to help out with your parameters. dev.ti.com/.../network_configuration.html

EDIT: To answer the question, the ZNP should most certainly support more than 100 zigbee 3.0 devices, as we have run tests with the ZNP with much more than 100 devices.

Best,
Sean

Sean,

thanks for the feedback. I am familiar with the network parameters available for the z-stack, but do you have any feedback on the issues i am encountering while increasing the ZDSECMGR_TC_DEVICE_MAX define? Because i can maybe connect more than 100 devices, but when i turn off and on the coordinator the pan id changes by itself (even though it should restore the network) and the connection with the other nodes is lost.

Considering you made some tests, can you maybe share more information on the other network parameters that i need to change (or other changes in the original zstack 3.0.1 znp build) in order to allow such number of devices?

Best regards,

Daniele Coati

You can try to follow these settings:

(For ZC only)
ZDSECMGR_TC_DEVICE_MAX=100 (or to number of Zigbee 3.0 devices you wish to allow onto the Zigbee network)
NWK_MAX_DEVICE_LIST=10 to save RAM, this is number of childrencoordinator allows
CONCENTRATOR_ENABLE=1
CONCENTRATOR_DISCOVERY_TIME=120 (establish a route request every 120 seconds)
MAX_ROUTING_SRC_ENTRIES=120 (should equal the max number of nodes in the the network)
SRC_ROUTING_EXPIRY_TIME=2 (time which the route is valid in src routing table)
CONCENTRATOR_ROUTE_CACHE=1 (set to TRUE)
MTO_RREQ_LIMIT_TIME=5000 (Limits route request storm)

(For ZC & ZR)
LINK_DOWN_TRIGGER=12
NWK_ROUTE_AGE_LIMIT=30
BCAST_DELIVERY_TIME=100
DEF_NWK_RADIUS=15
NWK_ROUTE_AGE_LIMIT=30
DEFAULT_ROUTE_REQUEST_RADIUS=8
ROUTE_DISCOVERY_TIME=13
ZDNWKMGR_MIN_TRANSMISSIONS=0
NWK_LINK_STATUS_PERIOD=15

(For ZR Only)
MAX_NEIGHBOR_ENTRIES=48

 

EDIT: Daniele,

Apologies in advance for telling you all these settings to try. I just attempted to try the same thing on my end with a CC2538 on Z-Stack 3.0.1, by both changing ZDSECMGR_TC_DEVICE_MAX to 150 as well as keeping it at the default. However, both times I saw that the pan ID was different as you had seen, as well as the network frame counter on the ZC was ~1000 more than what it was when the device reset, probably pointing to corruption somewhere. I am looking more into this now.

Sean,
thank you for taking the time to reproduce the problem on your end, but i didn't get the specific known issue you are referring to. Can you point me to the one that solves the problem?

Best Regards,
Daniele Coati

Oops! Looks like it included a parenthesis in the link when it shouldn't have. I've modified the link in the post above :)

However, the issue is titled 'IEEE_Address_of_CC2538ZNP_is_reported_incorrectly'.

Hi Sean,
i flagged your answer as resolved by mistake, but even by applying the fix I still have the same problem. I noticed that now the IEEE address is reported correctly over the air, but the coordinator still changes its PAN ID when i reset it.

Looking forward to your feedback.
Best Regards,
Daniele Coati