Jump to content

Welcome to Geeks to Go - Register now for FREE

Geeks To Go is a helpful hub, where thousands of volunteer geeks quickly serve friendly answers and support. Check out the forums and get free advice from the experts. Register now to gain access to all of our features, it's FREE and only takes one minute. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more.

Create Account How it Works
Photo

PAT


  • Please log in to reply

#1
kate22in

kate22in

    Member

  • Member
  • PipPip
  • 41 posts
Hai,

Modem ----- Router ------ PC 1
------ PC 2


Assume router has a default IP of 192.168.1.1 & Pc's 192.168.1.2 & 192.168.1.3.

My question is when 2 Pc's access internet simultaneously,how does the router know which computer requested for the information ? I doubt that it works based on port numbers.(logical).If that's right then how will the computer send it's port information to the router ?Or where is that infomation present in the packet ?To add on what packets does computer's use ?TCP or UDP ?When we say a computer sends data what type of packet is it ?
  • 0

Advertisements


#2
thenotch

thenotch

    Member

  • Retired Staff
  • 667 posts

My question is when 2 Pc's access internet simultaneously,how does the router know which computer requested for the information ?


MAC address. Every single network interface device has it's own, one-of-a-kind MAC address.
  • 0

#3
kate22in

kate22in

    Member

  • Topic Starter
  • Member
  • PipPip
  • 41 posts
Yes that's true.But i believe that Router is a Layer 3 device which can understand only Logical addresses.So i don think that a router can understand mac address.
  • 0

#4
Kurenai

Kurenai

    Retired Staff

  • Retired Staff
  • 494 posts
No, my router's mac filtering table assures me that it can see MAC addresses perfectly well. Essentially, the router is on layer 3 and binds IP addresses to mac addresses.

Edit - well...home routers don't fit directly into the OSI model, as they've got a router component, and then a switch, normally 4 port, attached, so the above might not be entirely accurate.

Edited by Kurenai, 12 November 2006 - 05:14 AM.

  • 0






Similar Topics

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

As Featured On:

Microsoft Yahoo BBC MSN PC Magazine Washington Post HP