Depending on the subnet masks, these hosts may or may not be able to directly communicate.
MAC address :)
One computer on a network will drop another if both computers are using the same IP Address. This can be solved by assigning both computers automatic IP address, and Windows will automatically deal with the network issue.
The ip address is used when another computer needs to connect to your computer or if you are hosting a site on your server. The ip address of your site will be the ip address of your computer. The IP address is used when communicating with another LAN (Local Area Network) across a WAN (Wide Area Network).
Arp -a
Network Layer
The packet is sent using the IP address and MAC address of the default gateway.
Mobile IP has two addresses for a mobile host : one home address and one care of address . The home address is permanent ; the care-of address changes as the mobile host moves from one network to another.
If you have the network 192.168.1.0/24, 192.168.1.0 is the network address.The network address is always the first IP address in a subnet, which may or may not be usable, depending on how the network is used.The network address is the address that is specified when denoting a network with a subnet mask192.168.1.4 255.255.255.252192.168.1.4 /30The network address is similar to a broadcast address, and some IP implementations will consider it a broadcast address.Before CIDR was invented (Classless Inter Domain Routing), network addresses were identifiable without knowing the subnet mask.
The address for a device as it is identified at the Media Access Control (MAC) layer in the Ethernet networkarchitecture. The MAC address is usually stored in ROM on the network adapter card and is unique.When reaching another host on your own network, or when accessing a router on your network to reach another network, The IP address (4 numbers separate by dots) is converted to the MAC address of the host or router on your network. When the message or packet(S) are sent out, the device with that destination MAC address recognizes that it was meant to receive the message and accepts it. Any other device on the network that can see the transmission is expected to ignore it.An exception is a device or router that is configured to be "promiscuous". Such a machine will also accept and process all transmissions even if meant for another device. This is often used for network monitoring/logging, maintenance, and problem resolution.Although the MAC address is hard coded into the network interface or device, in almost all cases it can be changed. An example for this is when an ethernet network is used with the DECnet protocol. DECnet can be used instead of or togetherwith TCP/IP (or Netware or NetBEUI). The DECnet protocol requires that the MAC address be changed to incorporate the DECnet address as part of the MA address.A MAC address is the serial number of a network card - or other equipment that connects to a network, usually an Ethernet network. In an Ethernet network, the MAC address is used as source and destination address, to know who is communicating with whom. For example, a switch uses the MAC address to forward a frame (a pieces of data) to the correct computer.
• The device will still operate at the same Layer 2 address.• The Layer 3 address must be reassigned to allow communications to the new network.
By the port number or the port address
It will not forward the frame to another network