PAN id conflict

VENKATA SATYANARAYANA SILLA

Genius 4195 points

Other Parts Discussed in Thread: CC2538, Z-STACK

Hi TI

I have done the following test.

1.Started a coordinator1 with PAN id 0xABCD in channel 0x0B.

2.Started a Router with PAN id 0xABCD in channel 0x0B. Router got associated with the coordinator.

3.Started another coordinator2 with the same PAN 0xABCD in channel 0x0B by taking it out of range from the Coordinator1 and Router. As a result a new network has been started by the other coordinator2 with PAN 0xABCD.

4.Now I have brought the Coordinator 2 with in the range of the coordinator1 and router.

I observe that all the 3 devices keep announcing at 15 seconds interval without any issue. and when I send data from the router with destination address as 0x0000 , I can see that data is being received by both coordinator 1 and coordinator 2.

My question is wont there be any PAN id conflict in this case?

over 10 years ago

0 YiKai Chen over 10 years ago

Guru 735695 points

Do you enable Zigbee security in this test?

0 VENKATA SATYANARAYANA SILLA over 10 years ago in reply to YiKai Chen

Genius 4195 points

How to enable security ?

pBuf->sec.securityLevel = false; is this what you are asking for ?

0 YiKai Chen over 10 years ago in reply to VENKATA SATYANARAYANA SILLA

Guru 735695 points

You can set SECURITY=1 in f8wconfig.cfg.

0 VENKATA SATYANARAYANA SILLA over 10 years ago in reply to YiKai Chen

Genius 4195 points

How does it impact what I have observed with the 3 cc2538 modules? Please explain

0 YiKai Chen over 10 years ago in reply to VENKATA SATYANARAYANA SILLA

Guru 735695 points

Since you deliberately make all your ZCs and ZR has the same PANID when they form and join network. Without Zigbee security enable, two ZC cannot tell difference of message from ZR and I suppose that's why your second ZC can receive message from ZR.

0 VENKATA SATYANARAYANA SILLA over 10 years ago in reply to YiKai Chen

Genius 4195 points

Ok but won't there be PAN conflict on seeing the 2nd coordinator with same PAN ?

0 VENKATA SATYANARAYANA SILLA over 10 years ago in reply to YiKai Chen

Genius 4195 points

Ok but won't there be a PAN conflict on seeing the 2nd coordinator with same PAN ?

0 YiKai Chen over 10 years ago in reply to VENKATA SATYANARAYANA SILLA

Guru 735695 points

ZC only check PANID conflict when it starts. You put second ZC out of radio coverage of first ZC and start the second ZC so they won't see each other and don't have PANID conflict.

0 VENKATA SATYANARAYANA SILLA over 10 years ago in reply to YiKai Chen

Genius 4195 points

OK
Can we see the PAN id conflict packet in sniffer? I tried the same test before by keeping the 2nd coordinator in the range of the 1st network which forces the 2nd coordinator to change its PAN to some other value. But never able to capture the PAN id conflict. I have seen few sniffer files/images from internet where I can see the PAN id conflict notification.

0 YiKai Chen over 10 years ago in reply to VENKATA SATYANARAYANA SILLA

Guru 735695 points

Yes, you cannot see anything about this PANID conflicts on sniffer. Z-Stack would call ZDApp_CoordStartPANIDConflictCB to handle it.

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PAN id conflict