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Category - Computer Science

The fact behind Bellman Ford algorithm
  • Computer Science

Distance Vector Routing Algorithm

September 26, 2022
by Santhakumar Raja
6 min read
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We first discuss distance vector routing. This method sees an AS, with all routers and networks, as a graph, a set of nodes and lines (edges) connecting the nodes. A router can normally be represented by a node and a network by a...

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Popular routing protocols
  • Computer Science

Intra – and Inter Domain Routing System

September 26, 2022
by Santhakumar Raja
2 min read
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Today, an internet can be so large that one routing protocol cannot handle the task of updating the routing tables of all routers. For this reason, an internet is divided into autonomous systems. An autonomous system (AS) is a...

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Inefficiency in Mobile IP
  • Computer Science

Inefficiency in Mobile IP – theteche.com

September 17, 2022
by Santhakumar Raja
2 min read
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Communication involving mobile IP can be inefficient. The inefficiency can be severe or moderate. The severe case is called double crossing or 2X. The moderate case is called triangle routing or dog-leg routing. Double...

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Internet Control Message Protocol (ICMP) Package
  • Computer Science

Internet Control Message Protocol (ICMP) Package

September 14, 2022
by Santhakumar Raja
2 min read
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To give an idea of how Internet Control Message Protocol – ICMP can handle the sending and receiving of ICMP messages, we present our version of an ICMP package made of two modules: an input module and an output module...

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Position of ARP in TCP-IP protocol suite
  • Computer Science

The Address Resolution Protocol (ARP)

September 7, 2022
by Santhakumar Raja
9 min read
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Anytime a host or a router has an IP datagram to send to another host or router, it has the logical (IP) address of the receiver. But the IP datagram must be encapsulated in a frame to be able to pass through the physical...

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Address Mapping in Computer Networks
  • Computer Science

Address Mapping in Computer Networks

August 21, 2022
by Santhakumar Raja
3 min read
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An internet is made of a combination of physical networks connected together by internetworking devices such as routers. A packet starting from a source host may pass through several different physical networks before finally...

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An ATM WAN in the Internet
  • Computer Science

IP Over ATM

August 21, 2022
by Santhakumar Raja
4 min read
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We assumed that the underlying networks over which the IP datagrams are moving are either LANs or point-to-point WANs. In this section, we want to see how an IP datagram is moving through a switched WAN such as an ATM. We will...

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Checksum concept
  • Computer Science

Checksum Calculation at the Sender / Receiver

August 14, 2022
by Santhakumar Raja
4 min read
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The error detection method used by most TCP/IP protocols is called the checksum. The checksum protects against the corruption that may occur during the transmission of a packet. It is redundant information added to the...

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Position of IP in TCP- Internet Protocol (IP) suite
  • Computer Science

Introduction to Internet Protocol (IP)

August 8, 2022
by Santhakumar Raja
2 min read
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The Internet Protocol (IP) is the transmission mechanism used by the TCP/IP protocols at the network layer. Figure shows the position of IP in the suite. IP is an unreliable and connectionless datagram protocol a best effort...

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Direct delivery
  • Computer Science

Delivery and Forwarding of IP Packets

August 2, 2022
by Santhakumar Raja
5 min read
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Delivery The network layer supervises the handling of the packets by the underlying physical networks. We define this handling as the delivery of a packet. The delivery of a packet to its final destination is accomplished using...

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