Network (ip) layer

Bài giảng Kỹ thuật liên mạng: Chương 3 Tầng mạng – Network Layer, cung cấp cho người đọc những kiến thức như: Giao thức tầng mạng – Internet Protocol; địa chỉ IP và khuôn dạng gói tin IP; Giao thức thông báo điểu khiển- ICMP. Mời các bạn cùng tham khảo!

53p chankora08 04-07-2023 12 5   Download

This thesis proposes and implements a new and novel solution on simulators and real devices to solve the mobility problem in a VPN. The new solution adds mobility support to existing L2TP/IPsec (Layer 2 Tunneling Protocol/IP Security) tunnels. The new solution tunnels Layer 2 packets between VPN clients and a VPN server without using Mobile IP, without incurring tunnel-re-establishment at handoff, without losing packets during handoff, achieves better security than current mobility solutions for VPN, and supports fast handoff in IPv4 networks.

123p runthenight07 01-03-2023 3 2   Download

In this paper, we focus on studying the mechanisms for routing in IP over WDM networks. Based on analyzing the routing mechanisms of overlay model, we propose a routing algorithm called MHLR (Min-Hop Lightpath Routing) which used for the case of traffic is routed on the virtual topology of IP layer. The objective of MHLR is minimize blocking probability of connection requests in the networks, improving on efficiently utilize the resource of WDM optical networks.

10p binhminhmuatrenngondoithonggio 09-06-2017 51 2   Download

In this chapter, you will learn to: Differentiate between two categories of cryptography schemes; understand four aspects of security; understand the concept of digital signature; understand the role of key management in entity authentication; know how and where IPSec, TLS, and PPG provide security.

41p tangtuy09 26-04-2016 54 3   Download

Mobile communication has received a lot of attention in the last decade. The interest in mobile communication on the Internet means that the IP protocol, originally designed for stationary devices, must be enhanced to allow the use of mobile computers, computers that move from one network to another.

26p tangtuy09 26-04-2016 42 2   Download

Real-time Transport Protocol (RTP) is the protocol designed to handle real-time traffic on the Internet. RTP does not have a delivery mechanism (multicasting, port numbers, and so on); it must be used with UDP. RTP stands between UDP and the application program. The main contributions of RTP are timestamping, sequencing, and mixing facilities. This chapter provides knowledge of RTP and RTCP.

29p tangtuy09 26-04-2016 53 2   Download

Upon completion you will be able to: Understand the difference between an internet and an extranet, understand private, hybrid, and virtual private networks, understand how VPN can guarantee privacy, understand the mechanism of NAT.

14p tangtuy09 26-04-2016 73 6   Download

In this chapter you will learn: Understand the shortcomings of IPv4; know the IPv6 address format, address types, and abbreviations; be familiar with the IPv6 header format; know the extension header types; know the differences between ICMPv4 and ICMPv6; know the strategies for transitioning from IPv4 to IPv6.

63p tangtuy09 26-04-2016 58 2   Download

In this chapter we discuss our first client/server application program, Dynamic Host Configuration Protocol (DHCP). This application is discussed first because it is the first client/server application program that is used after a host is booted. In other words, it serves as a bootstrap when a host is booted and supposed to be connected to the Internet, but the host does not know its IP address.

11p tangtuy09 26-04-2016 74 2   Download

After studying this chapter you will be able to: Understand how the DNS is organized, know the domains in the DNS, know how a name or address is resolved, be familiar with the query and response formats, understand the need for DDNS.

41p tangtuy09 26-04-2016 63 3   Download

In this chapter you will learn: Concept, network virtual terminal (NVT), NVT character set, embedding, options, option negotiation, suboption negotiation, controlling the server, out-of-band signaling.

41p tangtuy09 26-04-2016 47 2   Download

Upon completion you will be able to: Understand the connections needed for FTP file transfer be familiar with FTP commands and responses know the differences between FTP and TFTP be familiar with TFTP message types understand TFTP flow and error control.

26p tangtuy09 26-04-2016 54 2   Download

The main contents of this chapter include all of the following: User agent (UA), addresses, delayed delivery, aliases, mail transfer agent (MTA), commands and responses, mail transfer phases, mime, mail delivery, mail access protocols.

35p tangtuy09 26-04-2016 74 4   Download

The chapter has several objectives: To discuss SNMP as a framework for managing devices in an internet using the TCP/IP protocol suite; to define a manager as a host that runs SNMP client and any agents as a router or host that runs a server program; discuss SMI and MIB, which are used by SNMP; to show how SMI names objects, defines the type of data, and encodes data;...

38p tangtuy09 26-04-2016 59 3   Download

Transferring files from one computer to another is one of the most common tasks expected from a networking or internetworking environment. As a matter of fact, the greatest volume of data exchange in the Internet today is due to file transfer. In this chapter, we discuss two protocols involved in transferring files: File Transfer Protocol (FTP) and Trivial File Transfer Protocol (TFTP).

23p tangtuy09 26-04-2016 57 2   Download

The Hypertext Transfer Protocol (HTTP) is a protocol used mainly to access data on the World Wide Web. HTTP functions like a combination of FTP and SMTP. This chapter provides knowledge of Hypertext Transfer Protocol (HTTP): HTTP transaction, request message, response message, header, examples, some other features.

25p tangtuy09 26-04-2016 46 2   Download

The chapter has several objectives: To discuss the architecture of WWW and describe the concepts of hypertext and hypermedia; to describe Web clients and Web servers and their components; to define URL as a tool to identify a Web server; to introduce three different Web documents: static document, dynamic document, and active document;...

24p tangtuy09 26-04-2016 46 3   Download

Upon completion you will be able to: Review the features of an ATM WAN, understand how an a datagram can pass through an ATM WAN, understand how an IP packet is encapsulated in cells, understand how cells are routed in an ATM network, understand the function of ATMARP.

28p tangtuy09 26-04-2016 35 1   Download

After studying this chapter you will be able to: Be familiar with the ICMP message format, know the types of error reporting messages, know the types of query messages, be able to calculate the ICMP checksum, know how to use the ping and traceroute commands, understand the modules and interactions of an ICMP package.

51p tangtuy09 26-04-2016 50 4   Download

In this chapter students will be able to: Understand the format and fields of a datagram, understand the need for fragmentation and the fields involved, understand the options available in an IP datagram, be able to perform a checksum calculation, understand the components and interactions of an IP package.

61p tangtuy09 26-04-2016 48 3   Download