Why do we need packet fragmentation?
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Why do we need packet fragmentation?
Packet fragmentation is done to allow packet transfer over networks with certain Maximum Transfer Unit (MTU). If application data is bigger than MTU supported by the network then packet must be fragmented before they are transmitted over the network.
What is the need for packet fragmentation and reassembly?
IP fragmentation can cause excessive retransmissions when fragments encounter packet loss and reliable protocols such as TCP must retransmit all of the fragments in order to recover from the loss of a single fragment. Thus, senders typically use two approaches to decide the size of IP packets to send over the network.
What is the purpose of a router?
A router receives and sends data on computer networks. Routers are sometimes confused with network hubs, modems, or network switches. However, routers can combine the functions of these components, and connect with these devices, to improve Internet access or help create business networks.
How are packets fragmented in IPv6 and how does that compare to IPv4?
Packet Fragmentation: In IPv4, fragmentation is done by sender and forwarding routers. In IPv6, fragmentation is done by only sender routers. We can also say that IPv6 uses end-to-sender fragmentation whereas the in IPv4 fragmentation can also be done by the intermediate routers if the packet is larger.
What is a fragmented packet?
Fragmentation breaks a large packet into multiple smaller packets. A typical MTU size for an IP packet is 1500 bytes. The IP Identification field (IPID) is used to re-associate fragmented packets (they will have the same IPID).
What is fragmentation of a packet?
What is packet needs to be fragmented but DF set?
If the packet size you have entered is too high for your network, you will get the message Packet needs to be fragmented but DF set.
What is purpose of switch?
A switch is a device in a computer network that connects other devices together. Multiple data cables are plugged into a switch to enable communication between different networked devices.