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[FAQ] Compiler/CC2530: Zigbee routing table in large network

quang nguyen76

Part Number: CC2530

Tool/software: TI C/C++ Compiler

Hello.

I am using z-stack 3.0.1 and CC2530 to develop a zigbee network. When number of device is large, device is not enough memory for routing table, how can transmit message ?

Thanks

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YiKai Chen
- Apr 11, 2018 4:34 AM
Z-Stack should handle routing in the kernel. How many devices are you testing in your Zigbee network?

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YK Chen

660 Zigbee devices in the same Zigbee network!

How to setup Mosquitto on Raspberry Pi and make Contiki/Contiki-NG cc26xx-web-demo do mqtt publish to it.

How to connect Contiki-NG cc26xx-web-demo to IBM Watson IoT Platform

How to build and run Contiki-NG cc26xx-web-demo running on LAUNCHXL-CC1310 and rpl-border-router on Raspberry Pi with slip radio running on LAUNCHXL-CC131
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quang nguyen76
- Apr 11, 2018 5:15 AM
In reply to YiKai Chen:

About 200-300 device. If cc2530 have enough memory for routing this network?
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YiKai Chen
- Apr 11, 2018 5:22 AM
In reply to quang nguyen76:
You can refer to www.ti.com/.../swra427c.pdf

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YK Chen

660 Zigbee devices in the same Zigbee network!

How to setup Mosquitto on Raspberry Pi and make Contiki/Contiki-NG cc26xx-web-demo do mqtt publish to it.

How to connect Contiki-NG cc26xx-web-demo to IBM Watson IoT Platform

How to build and run Contiki-NG cc26xx-web-demo running on LAUNCHXL-CC1310 and rpl-border-router on Raspberry Pi with slip radio running on LAUNCHXL-CC131
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quang nguyen76
- Apr 11, 2018 6:39 AM
In reply to YiKai Chen:
Thanks you
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Ryan Brown1
- Apr 11, 2018 5:34 PM
In reply to YiKai Chen:
Hello quang,

Please be warned that this App Report was developed with Z-Stack 2.5.1 and optimized to allow a CC2530 to support a Many-to-One Source Route Cache table where it previously could not. The network topology must have one router for every 10-15 end devices and the optimized project is not publicly available so it will be very difficult to implement for your application. Also, the additional requirements of ZigBee 3.0 the CC2530 is extremely stressed for code space so it is generally not recommended that it be used as a ZC device for large mesh networks. I recommend considering the CC2538 or CC2652R as a viable alternative.

Regards,
Ryan

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YiKai Chen
- Apr 11, 2018 11:28 PM
In reply to Ryan Brown1:
Ryan Brown1 so, what is the max nodes we can add to a single Zigbee 3.0 network if we use CC2530?

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YK Chen

660 Zigbee devices in the same Zigbee network!

How to setup Mosquitto on Raspberry Pi and make Contiki/Contiki-NG cc26xx-web-demo do mqtt publish to it.

How to connect Contiki-NG cc26xx-web-demo to IBM Watson IoT Platform

How to build and run Contiki-NG cc26xx-web-demo running on LAUNCHXL-CC1310 and rpl-border-router on Raspberry Pi with slip radio running on LAUNCHXL-CC131
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JasonB
- Apr 12, 2018 12:31 AM
In reply to YiKai Chen:
If CC2530 is used as the ZC and you wish to support MTO routing with a Source Route Cache table, it will be difficult, especially with a ZNP coordinator because the CC2530 would then need to also support a serial interface which takes up even more RAM. The exact number will be highly dependent on the RAM optimizations that a user is able to make for their application.

For a Zigbee-3.0-device-only network, the real limiting factor would be ZDSECMGR_TC_DEVICE_MAX, i.e. the number of unique TC Link Keys that the ZC can store. Legacy devices in a Zigbee 3.0 network do not count towards this number though.

Regards,
Jason
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YiKai Chen
- Apr 12, 2018 12:41 AM
In reply to JasonB:

Let's say we use everything by default and just enable MTO with source routing cache. What is the max nodes we can have in a Zigbee 3.0 network?

If my post answers your question, please click on "This Resolved my issue" button to benefit others who have the same issue.

YK Chen

660 Zigbee devices in the same Zigbee network!

How to setup Mosquitto on Raspberry Pi and make Contiki/Contiki-NG cc26xx-web-demo do mqtt publish to it.

How to connect Contiki-NG cc26xx-web-demo to IBM Watson IoT Platform

How to build and run Contiki-NG cc26xx-web-demo running on LAUNCHXL-CC1310 and rpl-border-router on Raspberry Pi with slip radio running on LAUNCHXL-CC131
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JasonB
- Apr 13, 2018 1:52 AM
In reply to YiKai Chen:
I'll use OOB Z3.0.1 SampleLight ZC as an example. After setting CONCENTRATOR_ENABLE=TRUE, CONCENTRATOR_ROUTE_CACHE=TRUE, I was able to increase MAX_RTG_SRC_ENTRIES to 62. Each MAX_RTG_SRC_ENTRIES entry is 6 bytes of RAM, and you also have to consider that the last element of each Source Route table entry is a pointer to a relay list which is stored on the heap, so the heap must also be tuned accordingly.

In order to further increase the number of Source Route entries that the CC2530 can support, we can refer to this wiki page for RAM optimizations on CC2530:

processors.wiki.ti.com/.../Optimizing_Flash_and_RAM_Usage_of_Z-Stack_for_CC2530

Regards,
Jason
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