协调器和路由节点隔段时间就广播条命令是干嘛的？

协调器和路由节点隔段时间就广播条命令是干嘛的？

Link status，主要是为了邻居设备之间的链路状态。

In ZigBee PRO, this problem is overcome by the use of the Network Link Status message. Every router in a ZigBee
PRO network sends a periodic Link Status message. This message is a one hop broadcast message that contains the
sending device’s neighbor list. The idea is this – if you receive your neighbor’s Link Status and you are either
missing from the neighbor list or your receive cost is too low (in the list), you can assume that the link between you
and this neighbor is an asynchronous link and you should not use it for routing.
To change the time between Link Status messages you can change the compile flag
NWK_LINK_STATUS_PERIOD, which is used to initialize _NIB.nwkLinkStatusPeriod. You can also
change _NIB.nwkLinkStatusPeriod directly. Remember that only PRO routers send the link status message
and that every router in the network must have the same Link Status time period.
_NIB.nwkLinkStatusPeriod contains the number of seconds between Link Status messages