CC2530: Network Re Establishment Delay

Hello,

I am using CC2530 as Router with Sample Light Code and I have ZigBee Linux Gateway as coordinator. Here I have added the multiple Devices through Mesh Network.

Now here I face one of the most comman problem of network Re Establishment, as explained below:

Here the Device that are present near my Linux Gateway works fine(can send on and off properly) but the devices that are connected through Mesh Network and are located little further takes time for network re establishment i.e. There is command failure when we do on and off, but if we do it 2 to 3 times then the network is re established and now we can control the device without any command drop. So here why do we need to send command multiple times to re establish the connection and how can we solve this problem?