Thanks anav. I found that the http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1 is an invaluable source to learn and configure a functional mikrotik unit. But I think it would be good that the documentation have a high level of instructions. Because when I configured the valn filtering, I didnt think of that the default configuration of the INPUT chain would block the vlan traffic to the router itself. Because I did not need to do it with other vendors. But when I read the links above 3 days ago, I realized it could be one of the things causing my problem. However, it did not mention in the documentation in the vlan manual (or at lease I did not see it).
Mikrotik is very flexible and powerful. However, I would think we would need more high level of instruction to explain how it works, how it relates to each other and how to secure it. Because from my experience, it normally wouldn’t be too hard to understand the detailed configuration, but the harder bit is to understand how it relates to other part. For example, Mikrotik routers with switch ports integrated, once we created the vlans, it automatically allows intervaln routing. This is risky if someone configures it and uses it in production environment without realizing it. But it doenst seem that the documentation addresses it and draws much attention when we configure the vlans.
The link above is good, but in the documentation should address more instead of plainly explain the stuff standalone. That is my opinion. Hope it doesn’t upset anyone.