common network layer protocols

Network Layer

... link Network Layer 4-11 Network layer connection and connection-less service ❒ datagram network provides network- layer connectionless service ❒ VC network provides network- layer connection service ❒ analogous ... loss) no congestion no congestion yes no Guarantees ? Network Layer 4-31 The Internet Network layer forwarding table Host, router network layer functions: Routing protocols •path selection • RIP, OSPF, BGP IP ... conventions ICMP protocol •error reporting • router “signaling” Transport layer: TCP, UDP Link layer physical layer Network layer Network Layer 4-41 IP addressing: CIDR CIDR: Classless InterDomain Routing ❍ subnet...

Ngày tải lên: 12/09/2012, 15:06

138 850 1

The network layer Addressing and routing

... supposed that 2 IP sub -network share physically the same LAN. The stations on each sub -network then will see circulating all the packets diffused on the physic network. 1 The network layer Addressing ... rental lease) 7 - Engineers network link: 2B-14-62-91-C9-B1 - Engineers network link towards the external router: 2B-14-62-3F-39-21 - Commercial network link: 1C-96-AA-F4-C2-91 - Commercial network link towards ... 194.12.230.140. 1. Propose a mask of sub -network for the network of company. 194.12.230.0 is a Class C address, the last byte must be used to encode the numbers of sub -network and the numbers of hosts...

Ngày tải lên: 17/09/2012, 09:13

15 654 1

Tài liệu Chapter 5 - OSI Network Layer CCNA Exploration version 4.0 ppt

... www.bkacad.com 39 Network Layer Protocols and Internet Protocol (IP) Học viện mạng Bách khoa - Website: www.bkacad.com 3 • Define the basic role of the Network Layer in data networks • The protocols ... the control communication between the Data Link layer and the Network layer is the establishment of a maximum size for the packet. Network Layer Fields Học viện mạng Bách khoa - Website: ... networks • The protocols of the OSI model Network layer specify addressing and processes that enable Transport layer data to be packaged and transported. The Network layer encapsulation allows its contents...

Ngày tải lên: 22/12/2013, 13:17

64 414 0

Network Security Protocols: Analysis methods and standards potx

... of Octopus and Related Protocols Analysis of the IEEE 802.16e 3-way handshake Short-Password Key Exchange Protocol 802.16e Multicast- Broadcast Key Distribution Protocols MOBIKE - IKEv2 ... Principals, Attacker S e n d Re c e i v e Protocol Private Data Logic has symbolic and computational semantics Network Security Protocols: Analysis methods and standards John Mitchell Stanford University Joint work ... Wireless networking, VoIP, mobility  Typical standardization effort takes a couple of years Achievable goal: systematic methods that can be used by practicing engineers to improve network, ...

Ngày tải lên: 05/03/2014, 21:20

40 605 0

Chapter 19 Network Layer: Logical Addressing potx

... discussed in this section: 19.7 Numbering systems are reviewed in Appendix B. Note 19.1 Chapter 19 Network Layer: Logical Addressing Copyright © The McGraw-Hill Companies, Inc. Permission required for ... ISP 19.32 The first address in a block is normally not assigned to any device; it is used as the network address that represents the organization to the rest of the world. Note 19.49 19-2 IPv6 ... Appendix B) and add dots for separation. 19.48 Figure 19.13 An ISP and NAT 19.31 Figure 19.4 A network configuration for the block 205.16.37.32/28 19.30 c. The number of addresses can be found...

Ngày tải lên: 06/03/2014, 12:20

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Chapter 20 Network Layer: Internet Protocol pot

... TCP/IP protocols. mechanism used by the TCP/IP protocols. Datagram Fragmentation Checksum Options Topics discussed in this section: Topics discussed in this section: 20.5 Figure 20.3 Network layer ... of data (40 20).− Example 20.3 20.50 Figure 20.20 Tunneling strategy 20.7 Switching at the network layer in the Internet uses the datagram approach to packet switching. Note 20.9 20-2 IPv4 20-2 ... bytes are the options. Example 20.2 20.41 Table 20.6 Next header codes for IPv6 20.1 Chapter 20 Network Layer: Internet Protocol Copyright © The McGraw-Hill Companies, Inc. Permission required for...

Ngày tải lên: 06/03/2014, 12:20

52 950 0

Chapter 21 Network Layer: Address Mapping, Error Reporting, and Multicasting pdf

... Management Protocol (IGMP) is one of the necessary, but not sufficient, protocols that is of the necessary, but not sufficient, protocols that is involved in multicasting. IGMP is a companion to ... discussed in this section: Topics discussed in this section: 21.38 Imagine there are three hosts in a network, as shown in Figure 21.19. A query message was received at time 0; the random delay time...

Ngày tải lên: 06/03/2014, 12:20

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Chapter 22 Network Layer: Delivery, Forwarding, and Routing ppt

... mask matching 22.34 Figure 22.17 Two-node instability 22.27 22-3 UNICAST ROUTING PROTOCOLS 22-3 UNICAST ROUTING PROTOCOLS A routing table can be either static or dynamic. A A routing table can ... not match the corresponding network address. 2. The second mask (/25) is applied to the destination address. The result is 201.4.22.0, which does not match the corresponding network address (row 2). 22.43 Figure ... match the corresponding network address. 2. The second mask (/25) is applied to the destination address. The result is 180.70.65.128, which matches the corresponding network address. The next-hop...

Ngày tải lên: 06/03/2014, 12:20

83 662 1

Network Security Protocols in Practice Part I docx

... Networks  5.2 Public-Key Infrastructure  5.3 IPsec: A Security Protocol at the Network Layer  5.4 SSL/TLS: Security Protocols at the Transport Layer  5.5 PGP and S/MIME: Email Security Protocols  5.6 ... Networks  5.2 Public-Key Infrastructure  5.3 IPsec: A Security Protocol at the Network Layer  5.4 SSL/TLS: Security Protocols at the Transport Layer  5.5 PGP and S/MIME: Email Security Protocols  5.6 ... Protocols at the Transport Layer  5.5 PGP and S/MIME: Email Security Protocols  5.6 Kerberos: An Authentication Protocol  5.7 SSH: Security Protocols for Remote Logins J. Wang. Computer Network...

Ngày tải lên: 06/03/2014, 16:20

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Network Security Protocols in Practice Part II pdf

... the Network Layer  5.4 SSL/TLS: Security Protocols at the Transport Layer  5.5 PGP and S/MIME: Email Security Protocols  5.6 Kerberos: An Authentication Protocol  5.7 SSH: Security Protocols ... Wang. Computer Network Security Theory and Practice. Springer 2009 SSL Structure J. Wang. Computer Network Security Theory and Practice. Springer 2009 Chapter 5 Network Security Protocols in ... Computer Network Security Theory and Practice. Springer 2009 Chapter 5 Outline  5.1 Crypto Placements in Networks  5.2 Public-Key Infrastructure  5.3 IPsec: A Security Protocol at the Network Layer  5.4...

Ngày tải lên: 06/03/2014, 16:20

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A Study of the Relative Costs of Network Security Protocols potx

... advantage of whatever network- layer security services their environment provides. More impor- tantly, IPsec offers a remarkable flexibility not possible at higher or lower network layers: security ... is comprised of a set of protocols that provide data integrity, confidential- ity, replay protection, and authentication at the network layer. This positioning in the network stack offers con- siderable ... IPsec by maximizing network traffic using ttcp. In our next set of experiments, we investigate how IPsec behaves under “normal” network load and how it compares with other secure network transfer...

Ngày tải lên: 14/03/2014, 22:20

8 438 0

UNDERSTANDING INTERNET ROUTING ANOMALIES AND BUILDING ROBUST TRANSPORT LAYER PROTOCOLS docx

... robustness. Based on the network layer where the striping techniques are applied, we classify them into link -layer, transport -layer, and application -layer striping. 2.1 Network Testbeds We evaluate ... made to enhance network performance using striping techniques at the link -layer, transport -layer, and application -layer. We are the ﬁrst to implement and evaluate a transport -layer protocol that ... sizes over long-latency connections. 2.7 Transport -Layer Striping Many researchers have proposed the use of multiple paths by the transport -layer protocols to enhance reliability [8, 67, 58, 7]....

Ngày tải lên: 15/03/2014, 21:20

132 256 0

Network Security Protocols: A Tutorial pptx

... countermeasures – ATM: eat your card – military: shoot you – networking: lock account (subject to DOS) or be slow per attempt 1 Network Security Protocols: A Tutorial Radia Perlman May 2005 (radia.perlman@sun.com) 25 Cryptographic ... 44 Challenge/Response vs. Timestamp • Second protocol saves messages, fits more easily into existing protocols that expect passwords • First protocol does not require synchonized clocks • Second protocol...

Ngày tải lên: 22/03/2014, 14:20

93 484 0

Mobile and wireless communications network layer and circuit level design Part 1 potx

... chapters related to Network Aspects and Applications of Ad Hoc, Sensor and Mesh Networks. In this section, the network layer design in cellular, ad hoc, sensor and mesh networks for specic ... on various network parameters, such as the network throughput or the CBP achieved, to ensure that no SC or user class dominates the network resources. 3. Mobile & Wireless Networks Modeling ... Communications: Network layer and circuit level design, Edited by Salma Ait Fares and Fumiyuki Adachi p. cm. ISBN 978-953-307-042-1 MobileandWirelessCommunications: Network layer andcircuitleveldesign6 ...