I am using XBee3 Zigbee 3.0 with firmware version of 100D. There are one coordinator and quite a number of router xbee in my network (no end devices). I encountered a problem (data unable to send to coordinator) before when there are around 38 router devices. After some findings, I changed the routing approach to many-to-one routing and the problem gone. Currently, I have 1 coordinator with 44 routers connect to it. And seem likes the problem occurred again.
I have read through this post https://www.digi.com/support/forum/1245/maximum-number-nodes-using-coordinator-and-router-devices?start=30#a_list_title , but unable to find an answer to it.
What is the solution for this issue and what is the maximum number of router can join to a coordinator?