Computer Networks

Open shortest path first is a routing protocol that determines the shortest distance between two routers in an autonomous system. The OSPF protocol is developed on the basis of link-state routing that we discussed in our previous content. In this section, we will discuss the working of OSPF. We will also discuss the types of links in OSPF and also the types of OSPF … [Read more...] about Open Shortest Path First

Link state routing is an interior protocol that updates the routers inside the autonomous system i.e it is an intradomain protocol. The link-state routing was introduced to overcome the shortcomings of the distance vector routing protocol. The reason behind the replacement of distance vector routing protocol was it would take too long to propagate the information about the … [Read more...] about Link State Routing

Packet forwarding is the process of directing the packet towards its destination. As we know that Internet is a combination of several networks. A packet may belong to the same network as of source host or it may be for the destination host in a different network. So, a packet from a source host may have to travel many networks before reaching the destination. Packet … [Read more...] about Packet Forwarding

Routing information protocol (RIP) is a routing protocol that lets routers of an autonomous system inform each other about the changes inside the network. It is an intra-domain routing protocol as it updates the routing tables of routers inside an autonomous system. Routing specifies all those protocols that define the route of packets from source to destination across multiple … [Read more...] about Routing Information Protocol

Address mapping is a process of determining a logical address knowing the physical address of the device and determining the physical address by knowing the logical address of the device. Address mapping is required when a packet is routed from source host to destination host in the same or different network. Why Address Mapping? We know that the Internet is a collection of … [Read more...] about Address Mapping

IP over ATM is the transmission of IP datagram over a switched network such as ATM (Asynchronous Transfer Mode). In our few earlier contents, we have seen transmission of IP datagram over the connectionless LAN and point-to-point WAN that uses the available line to communicate. In this section, we will discuss the transmission of IP datagram over the switched ATM WAN network … [Read more...] about IP Over ATM

The network layer function is to provide end-to-end communication between the two computers where the source and the destination computers may be in the different networks. When the source and destination computers communicate with each other the packet from the source has to travel through several LANs or WANs to reach the destination. As the packet travels across different … [Read more...] about Network Layer Functions

Switching techniques are the methods used to route the data from one node to another in a switched communication network. Switching techniques are categorized into three types circuit switching, packet switching, and message switching. The first two switching technologies are commonly used in networking nowadays. Switching Techniques in Networking Why Switching? … [Read more...] about Switching Techniques

Internet standard is a working document or a proposed specification that gains the status of the standard after proper validation and is applicable to the worldwide Internet. This Internet standard is formed under the supervision of the Internet Society (ISOC) which is responsible for the creation and implementation of Internet standards. In this section, we will discuss the … [Read more...] about Internet Standard

Switched WAN network is a network that has several end nodes. There are two kinds of WAN networks point-to-point WAN network which connects two end nodes using a dedicated communication line and the other is switched WAN network that is a mesh of a point-to-point network that provides access to several end nodes. In our previous content i.e., point-to-point WAN network we … [Read more...] about Switched WANs