i dont know the type of router i Will use for the LAN,I want to network 300 computers but the challenge am facing now is
Unfortunately, your question is cut off so I don’t know exactly what your challenge is. However, I can guess that with 300 computers you are facing a number of issues, from performance to IP addressing. With 300 computers, you are probably wanting to purchase a higher-end router, although if you have that many computers, you are probably in the range of enterprise class equipment. I would suggest consulting with a trustworthy local technology firm that specializes in the needs of small to medium size businesses. If you don’t know who to talk to, feel free to contact me and I’ll be happy to see what I can do.