. Cisco Systems, Inc. is an American multinational corporation headquartered in San Jose, California, that designs, manufactures, and sells networking equipment. The company was founded in 1984 by Leonard Bosack and Sandy Lerner, two Stanford University computer science graduate students. Cisco has more than 72,000 employees worldwide and annual revenue of US$48.3 billion as of … Read more
The term field of view (FOV) is used in networking to describe the maximum amount of information that can be seen by a network device when it is looking at a particular data stream. The field of view of a network device can be affected by a number of factors, including the type of device, … Read more
RFC 1918 is a standard that defines a set of private IP addresses which can be used by organizations within their own networks. These addresses are not routable on the public Internet, and are therefore not reachable from outside the organization’s network. RFC 1918 addresses are often used in home and small office networks, where … Read more
NetFlow is a feature that was introduced on Cisco routers that allows the router to collect information about traffic flowing through it and export that information to a NetFlow collector. The NetFlow collector can then use that information to generate reports about traffic flows, bandwidth usage, etc. Is NetFlow still used? NetFlow is a data … Read more
A Martian address is a packet that has a source or destination address that is not recognized by the router. When a router receives a packet with a Martian address, it will drop the packet and not forward it. What is log Martian packets? Log Martian Packets is a feature of many routers and switches … Read more
The Northbound interface is the interface between the network controller and the applications that use the controller. The Southbound interface is the interface between the network controller and the devices that it controls. What is the difference between northbound and southbound? Northbound traffic refers to the data flowing from the lower layers of a network … Read more
Open Networking Foundation (ONF) is a non-profit, operator-led consortium that is driving transformation of network infrastructure and carrier business models. The Open Networking Foundation leverages SDN principles and disaggregation, using open source platforms and defined standards to enable network control and orchestration across a wide variety of multi-vendor hardware and software solutions. The Open Networking … Read more
OpenFlow is a communication protocol that was designed to enable the creation of software-defined networking (SDN) solutions. It does this by allowing network administrators to directly control the flow of traffic on a network, without having to rely on proprietary hardware or software solutions. OpenFlow was originally developed by a consortium of companies, including Cisco, … Read more
