search

fairecasoimeme / ZiGate

Zigate is an Universal Zigbee Gateway
http://zigate.fr
171 stars 59 forks source link

Topology - LQI Management #351

Closed pipiche38 closed 3 years ago

pipiche38 commented 3 years ago

I'm using 0x004e to build a network topology. The algo is starting from the controller and then queering each Neighbour.

From the source code, I feel that the firmware is reporting only 2bits out of the relationship bitfield which from the documentation is on a 3bit field.

Last, I'm getting some strange information time to time where the Zigate 0x0000 is sibling with some routers .

Here after it shows the Zigate sibling with several routers, and if I pick one of the router, this is also confirmed in its neighbour table !

Node   Node  Relation        Type Deepth  LQI Rx-Idle
0000   56fb     Child  End Device      1  207  Rx-Off
0000   f8d7     Child  End Device      1  159  Rx-Off
0000   50e0     Child      Router      1  161   Rx-On
0000   cd45   Sibling      Router      0   96   Rx-On
0000   5cbe   Sibling      Router      0   93   Rx-On
0000   ad66   Sibling      Router      0  125   Rx-On
0000   50ad   Sibling      Router      0   82   Rx-On
0000   129a   Sibling      Router      0   88   Rx-On
0000   cdd5   Sibling      Router      0  103   Rx-On

cdd5   0000   Sibling Coordinator      0  245   Rx-On
cdd5   129a   Sibling      Router      2  255   Rx-On
cdd5   cd45   Sibling      Router      2  249   Rx-On
cdd5   50ad   Sibling      Router      2  252   Rx-On
cdd5   5cbe   Sibling      Router      1  255   Rx-On
cdd5   50e0   Sibling      Router      2  188   Rx-On
cdd5   780e     Child  End Device      3  252  Rx-Off
cdd5   ad66   Sibling      Router      2  188   Rx-On
tcharp38 commented 3 years ago

Hi @pipiche38 What is supposed to do 00AE compared to 004E ? It's undocumented.

pipiche38 commented 3 years ago

You right, I'll edit the post, I'm refering to 0x004e as 0x00ae doesn't exist

tcharp38 commented 3 years ago

Ok then I'm interested too. I've seen similar things I could not understand like "unknown" relationship.

pipiche38 commented 3 years ago

@tcharp38 not sure how you get unknown relationship as it can only be 0x00 : Parent 0x01: Child 0x02: Sibling 0x03: None of above 0x04: Previous Child

and the main issue is that we have 3 bits information sent by the ZiGate into a 2 bits one !

I did further investigation and I have indeed some unexpected Unknown, for Permit to Join, where I saw also PermitJoin On while the entire network is on OFF !

tcharp38 commented 3 years ago

If 0 to 3, then 2 bits is enough unless MSB has another meaning. No ?

Regarding 0x03/Previous child. What does it mean ? I don't understand this relation.

Right now I could not tell you where I saw these unknown but sounds quite in line with your observations. Something is wrongly reported.

pipiche38 commented 3 years ago

I updated . 0x03 is None of above (which you might consider as unknown) and 0x04 is former child

tcharp38 commented 3 years ago

Ok then 3 bits. The point you mentioned. Could you explain to me what is a "former child" ? How is it differente from "child" ?

Another question for you: how "none" is possible ?

pipiche38 commented 3 years ago

Those are part of the norm. ( https://zigbeealliance.org/wp-content/uploads/2019/12/docs-05-3474-21-0csg-zigbee-specification.pdf ) From my understand a End Device (ZED) moving from one parent to an other one during a rejoins process and The previous parent of this ZED shall remove the ZED 5649 as one of its children by changing the Relationship field of the nwkNeighborTable to 0x04, “previous 5650 child.”

The extended address, device type, RxOnWhenIdle, and permit joining fields have “unknown” values which shall be returned where the values are not available

pipiche38 commented 3 years ago

https://community.nxp.com/t5/Wireless-Connectivity/Strange-Neighbourg-table/m-p/1246576/highlight/true#M10899

https://community.nxp.com/t5/Wireless-Connectivity/Suspect-code-in-JN-AN-1216-Zigbee-3-0-IoT-ControlBridge/m-p/1245091