cisco chapter 5 osi network layer pdf

... 3158 207.138.126.152:http ESTABLISHED TCP kenpc :3159 207.138.126.169:http ESTABLISHED C:\> 24 Trang 25Transport Layer Role and Services ° Describe the role of segments in the transport layer ... Receiver 1500 bytes - Sequence number 1 >> Receive 1- 1500 1500 bytes - Sequence number 1501 >> Receive 1501 - 3000 Receive Acknowledge =&£ Acknowledgement number 3001 1500 bytes ... 1500 bytes Sequence number 1 vt >> Receive 1501 - 3000 1500 bytes Sequence number 1501 yt >> Receive 1501 - 3000 Receive Acknowledge ~<& Acknowledgement number 3001 1500

Ngày tải lên: 22/12/2013, 13:17

... am who I say Trang 11PKIs how do they work? (115)• Once a digital certificate has been created and signed, they are stored in a “Certificate repository” which can be queried by users and applications ... encryption has what problem of it’s own? Trang 3MiM (normal exchange)Trang 4MiM Attack! (part 1)Trang 5MiM Attack! Part 2Trang 6Public Key InfrastructureWouldn’t it be nice if some one we could distribute ... queried by users and applications in a PKI when someone wants to communicate with a user • These repositories are usually LDAP compliant databases Trang 12So what’s in a Digital Certificate? Trang

Ngày tải lên: 22/03/2014, 23:21

... information into the whole network 31 Cisco and STP Variants 32 Cisco and STP Variants 33 PVST + • • Cisco developed PVST+ so that a network can run an STP instance for each VLAN in the network With PVST+, ... the connectivity of devices on the network. 5 Issues with Redundancy : Layer 2 Loop • When multiple paths exist between two devices on the network, a Layer 2 loop can occur. • Ethernet ... Semester 3 Chapter 5 - Spanning Tree Protocol CCNA Exploration 4.0 2 Objectives • Explain the role of redundancy in a converged network • Summarize how STP works to eliminate Layer 2

Ngày tải lên: 05/07/2014, 03:20

... © 2014 Computer Networks 2 Chapter 5: Network Design 31 One More  Network is 192.168.55.0  You want to divide the network into subnets  You will have approximately 25 nodes per subnet ... 2014 Computer Networks 2 Chapter 5: Network Design 5 Hierarchical Network Design Enterprise WAN Backbone Trang 6Hochiminh City University Of Technology Computer Networks 2 Cisco’s Hierarchical ... 2014 Computer Networks 2 Chapter 5: Network Design 1 Chapter 5.2: Network Design NGUYỄN CAO ĐẠT E-mail:dat@hcmut.edu.vn Trang 2Hochiminh City University Of Technology Computer Networks 2 Outline

Ngày tải lên: 26/11/2016, 02:12

... error-checking information  Put data on the network and send it Trang 4Seven-Layer OSI ModelTrang 5OSI Layer RelationshipsTrang 6Application Layer (7) Topmost layer  Represents services that directly ... Trang 2Open Systems Interconnection (OSI) Model Network Communications  OSI Model  Windows NT and the OSI Model Trang 3 Network Communications Sending Computer Must:  Recognize ... Referred to as the “hardware layer” Trang 14OSI Model Layer MnemonicsPresentation People Pizza Trang 15Packet Assembly and Disassembly Process Trang 16Windows NT and OSITrang 17Software and ProtocolsTrang

Ngày tải lên: 15/05/2017, 14:44

... Computer Networks 2 Chapter 5: Network Design 11 Top-Down Network Design  Phase 2 – Logical Network Design Trang 12Top-Down Network Design  Phase 3 – Physical Network Design campus networks ... 2014 Computer Networks 2 Chapter 5: Network Design 15 PDIOO Network Life Cycle(Cisco)  Plan  Network requirements are identified in this phase  Analysis of areas where the network will ... Engineering © 2014 Computer Networks 2 Chapter 5: Network Design 1 Chapter 5.1: Network Design NGUYỄN CAO ĐẠT E-mail:dat@hcmut.edu.vn Trang 2Outline  Introduction  Network Design Methology

Ngày tải lên: 26/11/2016, 02:11

... Trang 1Chapter 5.3: Network Design NGUYỄN CAO ĐẠT E-mail:dat@hcmut.edu.vn Trang 2Outline campus networks enterprise networks  Testing, Optimizing, and Documenting the Network Design ... analyzer on Network A protocol analyzer on Network B located on Network A and access Server 1 on Network B protocol analyzers Trang 62Example Test Script (continued) 5 Display data on Network A’s ... internal network provider stay in business Trang 49Selecting a Provider (continued) meet your needs providers for redundancy Trang 50Outline  Physical Network Design the Network Design Trang 51necessary

Ngày tải lên: 26/11/2016, 02:14

... from 224.0.0.0 to 239.255.255.255 is masked and delivered to the Ethernet interface. Example 21.9 Trang 51Example 21.9 (continued)Trang 5221-4 ICMPv6 We discussed IPv6 in Chapter 20 Another protocol ... Reporting Query Topics discussed in this section: Trang 53Figure 21.23 Comparison of network layers in version 4 and version 6Trang 5421.54Trang 55Table 21.4 Comparison of query messages in ICMPv4 ... 130.23.43.25 and physical address A4:6E:F4:59:83:AB The two hosts are on the same Ethernet network Show the ARP request and reply packets encapsulated in Ethernet frames. Solution Figure 21.5 shows

Ngày tải lên: 06/03/2014, 12:20

... © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public ITE PC v4.0 Chapter 1 1 OSI Network Layer Network Fundamentals – Chapter 5 ITE PC v4.0 Chapter 1 2 © 2007 Cisco Systems, Inc. ... destination network ITE PC v4.0 Chapter 1 3 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public Network Layer Protocols and Internet Protocol (IP)  Define the basic role of the Network Layer ... v4.0 Chapter 1 © 2007 Cisco Systems, Inc All rights reserved Cisco... devices communicating across networks of networks ITE PC v4.0 Chapter 1 © 2007 Cisco Systems, Inc All rights reserved Cisco

Ngày tải lên: 06/07/2014, 06:21

... excellent yields in such two-step biphasic procedures [25] Carbonylation of bromobenzene (Scheme 5.7) with required still higher temperatures (150 °C) The possible acyl intermediates of such reactions ... carbonylation of o-bromoacetamides at 100-130 °C with as catalyst (Scheme 5.8) Isolated yields were as high as 85 % [30] 5.3 Carbonylation of methane, alkenes and alkynes Oxidative carbonylation ... corresponding (Scheme 5.9) [31] With the former catalyst at 91 % conversion 75 % lactam yield was observed and 1,2-, 1,3- and 1,4-diphosphines all led to somewhat higher conversions (95-100 %) but to

Ngày tải lên: 13/12/2013, 14:15

... +61 2 8446 7411 (Australia: 1 800 805 227) EMEA: +32 2 704 55 55 USA: 1 800 553-2447 For a complete listing of Cisco TAC contacts, go to this URL: http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml ... marks of Cisco Systems, Inc.; and Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, the Cisco IOS logo, Cisco Press, Cisco ... the Cisco IP Telephony Solution Reference Network Design documentation, available online at http://www.cisco.com/go/srnd Trang 24Chapter 2 IPCC Express in Cisco CallManager Deployment Models Cisco

Ngày tải lên: 24/01/2014, 10:20

... lipoic acid, coenzyme A, thiamine pyrophosphate, glutathione, biotin, adenosine-5′-phosphosulfate, and 3-phosphoadenosine Group 2 Nutrients that are important in energy storage or structural ... produced from water (Marschner 1995) The major symptom of manganese defi-ciency is intervenous chlorosis associated with the devel-opment of small necrotic spots This chlorosis may occur on younger or ... those listed in Table 5.1, can also accumulate in plant tissues For exam-ple, aluminum is not considered to be an essential element, but plants commonly contain from 0.1 to 500 ppm alu-minum, and

Ngày tải lên: 20/02/2014, 01:20

... URL:http://mike.passwall.com/networking/netmodels/isoosi7layermodel.html [4] R Feig, “The OSI Reference Model”, Date Unknown, URL:http://www2.rad.com/networks/1994/osi/osi.htm [5] H S Ha, “OSI Layer”, 2000 URL:http://userpages.umbc.edu/~hha1/network/protocol.html ... http://whatis.techtarget.com/definition/0,289893,sid9_gci550525,00.html [11] R Anderson, “Security Engineering”, Wiley, 2001, p314 [12] Cisco Systems, “Cisco SAFE Enterprise Layer Two Addendum”, 2003, URL:http://www.cisco.com/en/US/netsol/ns340/ns394/ns171/ns128/networking_s ... Applying the OSI Seven Layer Network Model To Information Security This paper focuses on reviewing a key area of data networking theory - The Open Systems Interconnect (OSI) Seven Layer Network Model

Ngày tải lên: 05/03/2014, 21:20

... 220-1 INTERNETWORKING In this section, we discuss internetworking, connecting networks together to make an internetwork or an internet Need for Network Layer Internet as a Datagram Network Internet ... prevent any problems between IPv4 and IPv6 systems Trang 4820.48Trang 4920.49Trang 5020.50Trang 5120.51Trang 5220.52 ... Network Internet as a Connectionless Network Topics discussed in this section: Trang 320.3Trang 420.4Trang 520.5Trang 620.6Trang 8Communication at the network layer in the Internet is connectionless.

Ngày tải lên: 06/03/2014, 12:20

... Trang 1Chapter 22Network Layer: Delivery, Forwarding, and Routing Trang 222-1 DELIVERYThe network layer supervises the handling of the packets by the underlying physical networks We define ... section: Trang 52Figure 22.33 UnicastingTrang 53In unicasting, the router forwards the received packet through only one of its interfaces. Note Trang 54Figure 22.34 MulticastingTrang 55In multicasting, ... 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). Trang 15Example

Ngày tải lên: 06/03/2014, 12:20

... for Cisco 2960 switches.for Cisco 2960 switches. PVST+ (Cisco)PVST+ (Cisco) CCNA3-5 Chapter 5-2 PVST+ (Cisco)PVST+ (Cisco) Extended SystemExtended System IDID CCNA3-6 Chapter 5-2 PVST+ (Cisco)PVST+ ... (PVST+)(PVST+) CCNA3-3 Chapter 5-2 Cisco and IEEE STP VariantsCisco and IEEE STP Variants CCNA3-4 Chapter 5-2 •• Cisco PVST+Cisco PVST+:: •• A network can run an STP instance for A network can run an ... CCNA3-1 Chapter 5-2 Chapter 5Chapter 5 Spanning Tree ProtocolSpanning Tree Protocol (STP) (STP) Part IIPart II CCNA3-2 Chapter 5-2 Spanning Tree Protocol (STP)Spanning

Ngày tải lên: 09/03/2014, 13:20

... is known as layering more manageable OSI Model OSI Reference Model: Layers OSI Model OSI: A Layered Network Model The process of breaking up the functions or tasks of networking into layers reduces ... communication devices OSI Model Layer Architecture Layer architecture simplifies the network design It is easy to debug network applications in a layered architecture network The network management ... application layer are applications such as file transfer, electronic mail, remote login etc OSI Model OSI in Action A message begins at the top application layer and moves down the OSI layers to

Ngày tải lên: 30/03/2014, 07:20

... acid-sensitive systems (Tables 5.1 and 5.4) Model-gen-erated median values of the F-factor ranges from 0.56 to 0.85, and values of the 5th percentile of Adirondack lake projections (0.25 to 0.39) were reason-ably ... with SO42- deposition data, and a standard was determined that allowed no more than 11 kg/ha of wet SO42- to be deposited during any 52-week period (3.7 kg S/ha per year) (MPCA, 1985) This standard ... 3-fold increase in S deposition 15 0.34 0.03 Eilers et al., 1991 Bear Brook, ME Response to experimental watershed acidification 1 0.85 — Norton et al., 1992 1416/frame/C05 Page 119 Wednesday,

Ngày tải lên: 18/06/2014, 16:20

... 1995). Trang 3Table 5.1 Mean annual precipitation in the Ganges, Brahmaputra and Meghna basinsPrecipitation (mm) India Bangladesh 1,860 450-2,000 1,570 Bhutan India Bangladesh 400-500 500-5,000 ... GCMs were compared, and four were selected - CSIRO9(3.2 x 5.6o L9), UKTR (2.5 x 3.75o L19), GFDL (2.25 x 3.75o L14) and LLNL(4 x 5o L15) This maximizes the range of predicted changes in precipitation ... water.” With a complex network of 230 rivers, including 57 cross boundary rivers, about 92.5% of the 175 million hectares(mha) of combined basin area of the GBM Rivers (Fig 5.1) is beyond the boundary

Ngày tải lên: 18/06/2014, 19:20