ZigBee LQI values exceptionally low?

  • Platform information:
    • Hardware: Intel Core i3-6100T/8GB/256GB
    • OS: Ubuntu 20.04.5 LTS
    • Java Runtime Environment:
      openjdk 11.0.18 2023-01-17 LTS
      OpenJDK Runtime Environment Zulu11.62+17-CA (build 11.0.18+10-LTS)
      OpenJDK 64-Bit Server VM Zulu11.62+17-CA (build 11.0.18+10-LTS, mixed mode)
    • openHAB version: 3.4.2
  • Issue of the topic: Why are my LQIs so low?
  1. I started off showing the neighbors for the coordinator (0). The LQIs are all above 197, but then, as I interate each of the first level neighbors, the LQI back to the coordinator is very low (1).

  2. Why does the GUI not show anything in the “zigbee_neighbors” field? The “zigbee_neighbors” field is also blank using the API.

Any insights as to why this is the case for #1 and #2?

openhab> zigbee ncpversion
Ember NCP version 6.7.8.0, EZSP version 8

openhab> zigbee neighbors 0
Total neighbors: 4
Extended PAN ID       Extended Address      Network Address       Device Type           RX On When Idle  Relationship  Permit Joining  Depth         LQI
889BCFF26D025C5B      00124B00226B9FEE                      3823  ROUTER                          RX_ON    SIBLING       UNKNOWN            15           237
889BCFF26D025C5B      00124B0022D2E980                      2077  ROUTER                          RX_ON    SIBLING       UNKNOWN            15           233
889BCFF26D025C5B      00124B00226B803F                     21610  ROUTER                          RX_ON    SIBLING       UNKNOWN            15           197
889BCFF26D025C5B      00124B0022D2D040                     12003  ROUTER                          RX_ON    SIBLING       UNKNOWN            15           245

openhab> zigbee neighbors 3823
Total neighbors: 10
Extended PAN ID       Extended Address      Network Address       Device Type           RX On When Idle  Relationship  Permit Joining  Depth         LQI
889BCFF26D025C5B      00124B0022D2E980                      2077  ROUTER                          RX_ON      CHILD       UNKNOWN             2            22
889BCFF26D025C5B      00124B0022D2D040                     12003  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1
889BCFF26D025C5B      00124B00226BDA1E                     53436  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             0
889BCFF26D025C5B      00124B00226B803F                     21610  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1
889BCFF26D025C5B      00124B0022D3128F                     29385  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1
889BCFF26D025C5B      00124B0022D30DD4                     38627  ROUTER                          RX_ON      CHILD       UNKNOWN             2            40
889BCFF26D025C5B      00124B00226B7CD8                     35492  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             0
889BCFF26D025C5B      000D6F0017207592                         0  COORDINATOR                   UNKNOWN     PARENT       UNKNOWN             0             1
889BCFF26D025C5B      00124B0022D2D4CA                     41769  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             7
889BCFF26D025C5B      00124B0022D2E9FC                     20226  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1

openhab> zigbee neighbors 2077
Total neighbors: 10
Extended PAN ID       Extended Address      Network Address       Device Type           RX On When Idle  Relationship  Permit Joining  Depth         LQI
889BCFF26D025C5B      00124B0022D2D040                     12003  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1
889BCFF26D025C5B      00124B0022D3128F                     29385  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             0
889BCFF26D025C5B      00124B00226B9FEE                      3823  ROUTER                        UNKNOWN     PARENT       UNKNOWN             1            25
889BCFF26D025C5B      00124B0022D30DD4                     38627  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             0
889BCFF26D025C5B      00124B00226BDA1E                     53436  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1
889BCFF26D025C5B      00124B0022D2D4CA                     41769  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             0
889BCFF26D025C5B      000D6F0017207592                         0  COORDINATOR                   UNKNOWN    UNKNOWN       UNKNOWN           255             1
889BCFF26D025C5B      00124B00226B803F                     21610  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             0
889BCFF26D025C5B      00124B00226B7CD8                     35492  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             0
889BCFF26D025C5B      00124B0022D2E9FC                     20226  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1

openhab> zigbee neighbors 21610
Total neighbors: 10
Extended PAN ID       Extended Address      Network Address       Device Type           RX On When Idle  Relationship  Permit Joining  Depth         LQI
889BCFF26D025C5B      00124B0022D2D4CA                     41769  ROUTER                          RX_ON      CHILD       UNKNOWN             2            17
889BCFF26D025C5B      00124B0022D3128F                     29385  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             9
889BCFF26D025C5B      00124B00226B9FEE                      3823  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1
889BCFF26D025C5B      00124B0022D2D040                     12003  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1
889BCFF26D025C5B      00124B0022D2E980                      2077  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             0
889BCFF26D025C5B      00124B0022D30DD4                     38627  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1
889BCFF26D025C5B      00124B00226BDA1E                     53436  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1
889BCFF26D025C5B      000D6F0017207592                         0  COORDINATOR                   UNKNOWN     PARENT       UNKNOWN             0             0
889BCFF26D025C5B      00124B00226B7CD8                     35492  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1
889BCFF26D025C5B      00124B0022D2E9FC                     20226  ROUTER                        UNKNOWN    UNKNOWN       UNKNOWN           255             1