Connection split to TWO different LAN

RouterOS Beginner Basics
1

I want to split connection TWO different LAN using RB951G.
I have 8 MB speed of WAN.
I have also TWO different LAN.

Eg:
Eth1 > 8 MB
Eth2 > 192.168.100.0/24
Eth3 > 192.168.200.0/24

I want to split connection same bandwidth each other,
Eg:

Eth2 > 4 MB
Eth3 > 4 MB

Please kindly help me and suggest me how is the best to solve.

Thanks
Bagan Hero

2

If you want to split connection speed only between both subnets, you can use simple queues:
http://wiki.mikrotik.com/wiki/Manual:Queue#Simple_Queues

But if you want to split both subnets, and give equal bandwidth speed to every host, you should use Queue tree
http://wiki.mikrotik.com/wiki/Manual:Queue#Queue_Tree

And manage bandwidth them with Per Connection Queue, this will allow you to give equal maximal available traffic for all hosts:
http://wiki.mikrotik.com/wiki/Manual:Queues_-_PCQ_Examples