Network Improvement
Encyclopedia
Network Improvement is a large subject that encompasses all actions that can be taken to improve computer
or digital networks.
ler is a mechanism to control the flow of traffic on the network. The controller may be used to reduce overall packet loss and congestion. A network controller implements this by setting up restrictions and\or prioritising traffic for certain protocols, applications, ports on a network or by modifying the behaviour of traffic.
The main elements of traffic control are classification, scheduling and queuing. Classification looks at packet content or at other information related to packets and attribute them to a distinct class. Packets are then put into queues and eventually scheduled for transmission. The class of a packet determines in which queue the packet goes and how it is scheduled.
is a method of increasing the buffer space for TCP packets, the TCP maximum window size is around 64kb/s. For high performance networks an improvement will be noticed in increasing the maximum window size for TCP packets. To get maximal throughput it is critical to use optimal TCP send and receive socket buffer sizes. But if the buffers are too small, the TCP congestion window will never fully open up. However if the receiver buffers are too large, TCP flow control breaks and the sender can overrun the receiver, which will cause the TCP window to shut down. This is likely to happen if the sending host is faster than the receiving host. Overly large windows on the sending side is not a big problem as long as the memory is available.
In deciding the optimal size for the TCP buffer the following formula is used:
bandwidth * RTT
As the higher the BDP the higher the traffic is on the network, an increase in buffer size wil reduce the amount of packet loss and as a result improve efficiency.
, is a method for dividing up a network regardless of physical infrastructure. A VLAN would be used when devices need to be separated as they have different requirements. As an example a VLAN can be created for devices within a firewall. However the ease of physically moving a device while still keeping the same logical connection on the network is the most beneficial addition of a VLAN.
Computer
A computer is a programmable machine designed to sequentially and automatically carry out a sequence of arithmetic or logical operations. The particular sequence of operations can be changed readily, allowing the computer to solve more than one kind of problem...
or digital networks.
Network Traffic Control
A network traffic controlNetwork traffic control
In computer networking, network traffic control is the process of managing, prioritising, controlling or reducing the network traffic, particularly Internet bandwidth, used by network administrators, to reduce congestion, latency and packet loss. This is part of bandwidth management...
ler is a mechanism to control the flow of traffic on the network. The controller may be used to reduce overall packet loss and congestion. A network controller implements this by setting up restrictions and\or prioritising traffic for certain protocols, applications, ports on a network or by modifying the behaviour of traffic.
The main elements of traffic control are classification, scheduling and queuing. Classification looks at packet content or at other information related to packets and attribute them to a distinct class. Packets are then put into queues and eventually scheduled for transmission. The class of a packet determines in which queue the packet goes and how it is scheduled.
TCP Tuning
TCP tuningTCP tuning
TCP tuning techniques adjust the network congestion avoidance parameters of TCP connections over high-bandwidth, high-latency networks. Well-tuned networks can perform up to 10 times faster in some cases.- Bandwidth-delay product :...
is a method of increasing the buffer space for TCP packets, the TCP maximum window size is around 64kb/s. For high performance networks an improvement will be noticed in increasing the maximum window size for TCP packets. To get maximal throughput it is critical to use optimal TCP send and receive socket buffer sizes. But if the buffers are too small, the TCP congestion window will never fully open up. However if the receiver buffers are too large, TCP flow control breaks and the sender can overrun the receiver, which will cause the TCP window to shut down. This is likely to happen if the sending host is faster than the receiving host. Overly large windows on the sending side is not a big problem as long as the memory is available.
In deciding the optimal size for the TCP buffer the following formula is used:
bandwidth * RTT
As the higher the BDP the higher the traffic is on the network, an increase in buffer size wil reduce the amount of packet loss and as a result improve efficiency.
VLAN
A VLAN, also known as a virtual LANVirtual LAN
A virtual local area network, virtual LAN or VLAN, is a group of hosts with a common set of requirements that communicate as if they were attached to the same broadcast domain, regardless of their physical location...
, is a method for dividing up a network regardless of physical infrastructure. A VLAN would be used when devices need to be separated as they have different requirements. As an example a VLAN can be created for devices within a firewall. However the ease of physically moving a device while still keeping the same logical connection on the network is the most beneficial addition of a VLAN.