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Network Layer - Coggle Diagram

- - - - IPv4 – Source uses its own IP address and Subnet mask, along with the destination IP address
      - IPv6 – Source uses the network address and prefix advertised by the local router
- - - - provide optional network layer information
      - Optional
      - are placed between IPv6 header and the payload
      - may be used for fragmentation, security, mobility support, etc.
- - - - Connectionless
      - Best Effort
      - Media Independent
        
        Unreliable
        
        It cannot manage or fix undelivered or corrupt packets.
        
        IP cannot retransmit after an error.
        
        IP cannot realign out of sequence packets.
        
        IP must rely on other protocols for these functions.
        
        Media independent
        
        IP does not concern itself with the type of frame required at the data link layer or the media type at the physical layer.
        
        IP can be sent over any media type: copper, fiber, or wireless
- - - - Default Route – this forwards all traffic to a specific direction when there is not a match in the routing table
      - Remote – These are the routes the router does not have a direct connection and may be learned:
        
        Dynamically – by using a routing protocol to have the routers share their information with each other
        
        Manually – with a static route
      - Directly Connected – These routes are automatically added by the router, provided the interface is active and has addressing.