On a packet switched network, data travels between layers 1, 2 and 3 of the OSI model using routers (layer 3), switches (layer 2), and media (layer 1).
Packets Words
Firewalls perform a simple form of "stateful inspection" of the packets that flow through them.
tunneling
Packets
When packets are too big for a network to handle, they may be fragmented into smaller packets for transmission. If fragmentation is not possible, the packets may be dropped, leading to data loss and requiring retransmission. This can result in increased latency and reduced overall network performance. Additionally, oversized packets can cause congestion and inefficiencies in network routing and processing.
The network layer is the layer that is responsible for routing packets on the network. This is the layer in which Internet protocol operates. In the seven layer OSI model, the network layer is the third layer from the bottom.
Network
As load exceeds network capacity, packets gets jammed at nodes. These packets never go forward unless load goes below network capacity. Hence when load exceeds network capacity delay tends to infinity. As load exceeds network capacity, packets gets jammed at nodes. These packets never go forward unless load goes below network capacity. Hence when load exceeds network capacity delay tends to infinity.
Network Layer ( 3 )
Unicast
Network Layer
packets