{"product_id":"ccnp-enterprise-certification-study-guide-implementing-and-operating-cisco-enterprise-network-core-technologies-9781119658757","title":"CCNP Enterprise Certification Study Guide","description":"\u003cb\u003eBook Synopsis\u003c\/b\u003e\u003cbr\u003e\u003cp\u003e\u003cb\u003eThe practical and conceptual knowledge you need to attain CCNP Enterprise certification\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eFrom one of the most trusted study guide publishers comes \u003ci\u003eCCNP Enterprise Certification Study Guide: Exam 350-401\u003c\/i\u003e. This guide helps you develop practical knowledge and best practices for critical aspects of enterprise infrastructure so you can gain your CCNP Enterprise certification. If you're hoping to attain a broader range of skills and a solid understanding of Cisco technology, this guide will also provide fundamental concepts for learning how to implement and operate Cisco enterprise network core technologies\u003ci\u003e.\u003c\/i\u003e\u003c\/p\u003e \u003cp\u003eBy focusing on real-world skills, each chapter prepares you with the knowledge you need to excel in your current role and beyond. It covers emerging and industry-specific topics, such as SD-WAN, network design, wireless, and automation. This practical guide also includes lessons on:\u003c\/p\u003e \u003cp\u003e? Automation\u003c\/p\u003e \u003cp\u003e? Network assurance\u003c\/p\u003e \u003cp\u003e? Security\u003c\/p\u003e \u003cbr\u003e\u003cbr\u003e\u003cb\u003eTable of Contents\u003c\/b\u003e\u003cbr\u003e\u003cp\u003eIntroduction xxi\u003c\/p\u003e \u003cp\u003eAssessment Test xxviii\u003c\/p\u003e \u003cp\u003e\u003cb\u003eChapter 1 Networking Fundamentals 1\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eThe OSI Model 2\u003c\/p\u003e \u003cp\u003eThe Upper Layers: Application, Presentation, and Session 4\u003c\/p\u003e \u003cp\u003eMaking Sense of Layers 4\u003c\/p\u003e \u003cp\u003eThe Lower Layers: Physical, Data Link, Network, and Transport 6\u003c\/p\u003e \u003cp\u003eLayer 1: The Physical Layer 7\u003c\/p\u003e \u003cp\u003eLayer 2: The Data Link Layer 8\u003c\/p\u003e \u003cp\u003eA Brief History of Ethernet 8\u003c\/p\u003e \u003cp\u003eThe MAC Address Table 10\u003c\/p\u003e \u003cp\u003eMaximum Transmission Unit 12\u003c\/p\u003e \u003cp\u003eSubnet Limits 12\u003c\/p\u003e \u003cp\u003eLayer 3: The Network Layer 13\u003c\/p\u003e \u003cp\u003eForwarding within a Subnet 14\u003c\/p\u003e \u003cp\u003eForwarding between Subnets 14\u003c\/p\u003e \u003cp\u003eAddress Resolution Protocol 16\u003c\/p\u003e \u003cp\u003eFragmentation 17\u003c\/p\u003e \u003cp\u003eRouting vs. Forwarding 18\u003c\/p\u003e \u003cp\u003eLayer 4: The Transport Layer 18\u003c\/p\u003e \u003cp\u003eTransmission Control Protocol 19\u003c\/p\u003e \u003cp\u003eEncapsulation and Decapsulation 21\u003c\/p\u003e \u003cp\u003eSummary 22\u003c\/p\u003e \u003cp\u003eExam Essentials 22\u003c\/p\u003e \u003cp\u003eReview Questions 24\u003c\/p\u003e \u003cp\u003e\u003cb\u003eChapter 2 Spanning Tree Protocols 29\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eThe Need for Spanning Tree 31\u003c\/p\u003e \u003cp\u003eVLANs and Trunking 32\u003c\/p\u003e \u003cp\u003eDynamic Trunking 34\u003c\/p\u003e \u003cp\u003eUnconditional Trunking 35\u003c\/p\u003e \u003cp\u003eActive and Allowed VLANs 36\u003c\/p\u003e \u003cp\u003eRapid Per-VLAN Spanning Tree 38\u003c\/p\u003e \u003cp\u003eElecting the Root Bridge 38\u003c\/p\u003e \u003cp\u003eCalculating the Root Ports 41\u003c\/p\u003e \u003cp\u003eCalculating the Root Ports of Indirectly Connected Switches 44\u003c\/p\u003e \u003cp\u003eModifying Port Cost 46\u003c\/p\u003e \u003cp\u003eModifying Port Priority 47\u003c\/p\u003e \u003cp\u003eCalculating Blocked Ports 48\u003c\/p\u003e \u003cp\u003ePort States 49\u003c\/p\u003e \u003cp\u003ePort Roles 49\u003c\/p\u003e \u003cp\u003eLink Types 49\u003c\/p\u003e \u003cp\u003eMultiple Spanning Tree 50\u003c\/p\u003e \u003cp\u003eRoot Bridges and Port Priority 52\u003c\/p\u003e \u003cp\u003eInternal Spanning Tree 53\u003c\/p\u003e \u003cp\u003eNative VLAN 54\u003c\/p\u003e \u003cp\u003eTopology Change Detection 55\u003c\/p\u003e \u003cp\u003eSpanning Tree Extensions 55\u003c\/p\u003e \u003cp\u003eRoot Guard 55\u003c\/p\u003e \u003cp\u003eBPDU Guard and BPDU Filter 57\u003c\/p\u003e \u003cp\u003eUnidirectional Link Detection 58\u003c\/p\u003e \u003cp\u003eLoop Guard 58\u003c\/p\u003e \u003cp\u003eSummary 58\u003c\/p\u003e \u003cp\u003eExam Essentials 59\u003c\/p\u003e \u003cp\u003eExercises 60\u003c\/p\u003e \u003cp\u003eReview Questions 62\u003c\/p\u003e \u003cp\u003e\u003cb\u003eChapter 3 Enterprise Network Design 67\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003ePhysical Network Architectures 68\u003c\/p\u003e \u003cp\u003eComparing Campus and Data Center Networks 69\u003c\/p\u003e \u003cp\u003eThe Three-Tier Architecture 70\u003c\/p\u003e \u003cp\u003eThe Two-Tier Collapsed Core: A Cheaper Alternative 73\u003c\/p\u003e \u003cp\u003eLayer 2 Design 74\u003c\/p\u003e \u003cp\u003eSwitched and Routed Interfaces 75\u003c\/p\u003e \u003cp\u003eSwitched Topologies 76\u003c\/p\u003e \u003cp\u003eRouted Access Topology 81\u003c\/p\u003e \u003cp\u003eEtherChannels 82\u003c\/p\u003e \u003cp\u003eLoad-Balancing Methods 83\u003c\/p\u003e \u003cp\u003eStatic EtherChannels 84\u003c\/p\u003e \u003cp\u003ePort Aggregation Control Protocol 88\u003c\/p\u003e \u003cp\u003eLink Aggregation Control Protocol 90\u003c\/p\u003e \u003cp\u003eFirst-Hop Redundancy Protocols 91\u003c\/p\u003e \u003cp\u003eHot Standby Router Protocol 92\u003c\/p\u003e \u003cp\u003eVirtual Router Redundancy Protocol 94\u003c\/p\u003e \u003cp\u003eGateway Load-Balancing Protocol 95\u003c\/p\u003e \u003cp\u003eSummary 97\u003c\/p\u003e \u003cp\u003eExam Essentials 98\u003c\/p\u003e \u003cp\u003eReview Questions 100\u003c\/p\u003e \u003cp\u003e\u003cb\u003eChapter 4 Wireless LAN (WLAN) 105\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eRadio Frequency Fundamentals 106\u003c\/p\u003e \u003cp\u003eFrequency and Amplitude 107\u003c\/p\u003e \u003cp\u003eCarrier Frequency 109\u003c\/p\u003e \u003cp\u003ePower Levels 110\u003c\/p\u003e \u003cp\u003eWLAN 802.11 Standards 115\u003c\/p\u003e \u003cp\u003eThe Physical Layer: Frequencies and Channels 115\u003c\/p\u003e \u003cp\u003eLayer 2: 802.11 Media Access Control (MAC) 119\u003c\/p\u003e \u003cp\u003eAccess Point Modes 124\u003c\/p\u003e \u003cp\u003eAutonomous 124\u003c\/p\u003e \u003cp\u003eLightweight 124\u003c\/p\u003e \u003cp\u003eWireless LAN Controller Selection Process 125\u003c\/p\u003e \u003cp\u003eRoaming and Location Services 126\u003c\/p\u003e \u003cp\u003eRoaming 126\u003c\/p\u003e \u003cp\u003eLocation Services 128\u003c\/p\u003e \u003cp\u003eSummary 128\u003c\/p\u003e \u003cp\u003eExam Essentials 129\u003c\/p\u003e \u003cp\u003eReview Questions 130\u003c\/p\u003e \u003cp\u003e\u003cb\u003eChapter 5 Open Shortest Path First (OSPF) 135\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eLink-State Advertisements 136\u003c\/p\u003e \u003cp\u003eOSPF Areas 137\u003c\/p\u003e \u003cp\u003eLSA Types 137\u003c\/p\u003e \u003cp\u003eNeighbor Operations 141\u003c\/p\u003e \u003cp\u003eConfiguring OSPF 142\u003c\/p\u003e \u003cp\u003eConfiguring Area 0 on a Broadcast Network 142\u003c\/p\u003e \u003cp\u003eViewing Neighbor Adjacencies 143\u003c\/p\u003e \u003cp\u003eRigging the Designated Router Election 144\u003c\/p\u003e \u003cp\u003eViewing and Understanding LSAs 146\u003c\/p\u003e \u003cp\u003eAuthentication 154\u003c\/p\u003e \u003cp\u003ePassive Interfaces 158\u003c\/p\u003e \u003cp\u003eInjecting a Default Route 159\u003c\/p\u003e \u003cp\u003eInter-Area Summarization 161\u003c\/p\u003e \u003cp\u003eRoute Filtering 162\u003c\/p\u003e \u003cp\u003eDistribute Lists 162\u003c\/p\u003e \u003cp\u003eSummary 163\u003c\/p\u003e \u003cp\u003eExam Essentials 164\u003c\/p\u003e \u003cp\u003eExercises 164\u003c\/p\u003e \u003cp\u003eReview Questions 166\u003c\/p\u003e \u003cp\u003e\u003cb\u003eChapter 6 Enhanced Interior Gateway Routing Protocol (EIGRP) 171\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eEIGRP Fundamentals 172\u003c\/p\u003e \u003cp\u003eEIGRP Packet Types 172\u003c\/p\u003e \u003cp\u003eThe Diffusing Update Algorithm (DUAL) 173\u003c\/p\u003e \u003cp\u003eWeighted Metrics 176\u003c\/p\u003e \u003cp\u003eConfiguring EIGRP 178\u003c\/p\u003e \u003cp\u003eEqual Cost Multipathing 181\u003c\/p\u003e \u003cp\u003eModifying Metrics 182\u003c\/p\u003e \u003cp\u003eSwitching Types 186\u003c\/p\u003e \u003cp\u003eUnequal Cost Multipathing 187\u003c\/p\u003e \u003cp\u003eSummary 190\u003c\/p\u003e \u003cp\u003eExam Essentials 190\u003c\/p\u003e \u003cp\u003eExercises 191\u003c\/p\u003e \u003cp\u003eReview Questions 192\u003c\/p\u003e \u003cp\u003e\u003cb\u003eChapter 7 The Border Gateway Protocol (BGP) 197\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eBGP Fundamentals 198\u003c\/p\u003e \u003cp\u003eBGP AS Numbers 199\u003c\/p\u003e \u003cp\u003eBGP Session States 201\u003c\/p\u003e \u003cp\u003eConfiguring BGP 202\u003c\/p\u003e \u003cp\u003eAdvertising Prefixes 204\u003c\/p\u003e \u003cp\u003ePath Selection 205\u003c\/p\u003e \u003cp\u003eRoute Redistribution among BGP, OSPF, and EIGRP 210\u003c\/p\u003e \u003cp\u003eTesting IP Reachability Using Tcl Scripts 214\u003c\/p\u003e \u003cp\u003eTroubleshooting 215\u003c\/p\u003e \u003cp\u003eModifying Weight 218\u003c\/p\u003e \u003cp\u003eAdvertising Summary Routes Using Route Aggregation 220\u003c\/p\u003e \u003cp\u003eRoute Filtering Using Route Maps and Prefix Lists 222\u003c\/p\u003e \u003cp\u003eSummary 225\u003c\/p\u003e \u003cp\u003eExam Essentials 226\u003c\/p\u003e \u003cp\u003eExercises 226\u003c\/p\u003e \u003cp\u003eReview Questions 228\u003c\/p\u003e \u003cp\u003e\u003cb\u003eChapter 8 Network Address Translation and Multicast 233\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eNetwork Address Translation 234\u003c\/p\u003e \u003cp\u003eAddress Types 234\u003c\/p\u003e \u003cp\u003eStatic NAT 236\u003c\/p\u003e \u003cp\u003eDynamic NAT 241\u003c\/p\u003e \u003cp\u003eNAT Overload with Port Address Translation 247\u003c\/p\u003e \u003cp\u003eOutside Static NAT 250\u003c\/p\u003e \u003cp\u003eRemoving NAT Configurations 251\u003c\/p\u003e \u003cp\u003eMulticast 252\u003c\/p\u003e \u003cp\u003eIP Multicast 253\u003c\/p\u003e \u003cp\u003eLAN Multicast 253\u003c\/p\u003e \u003cp\u003eMulticast Routing 257\u003c\/p\u003e \u003cp\u003eConfiguring PIM 258\u003c\/p\u003e \u003cp\u003eConfiguring a Multicast Receiver 262\u003c\/p\u003e \u003cp\u003eIP Multicast and Ethernet 264\u003c\/p\u003e \u003cp\u003eSummary 265\u003c\/p\u003e \u003cp\u003eExam Essentials 267\u003c\/p\u003e \u003cp\u003eExercises 268\u003c\/p\u003e \u003cp\u003eReview Questions 270\u003c\/p\u003e \u003cp\u003e\u003cb\u003eChapter 9 Quality of Service 275\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eUnderstanding Quality of Service 276\u003c\/p\u003e \u003cp\u003eClassification and Marking 277\u003c\/p\u003e \u003cp\u003eDifferentiated Services 277\u003c\/p\u003e \u003cp\u003eLayer 2 Marking 280\u003c\/p\u003e \u003cp\u003eClass Maps and Policy Maps 280\u003c\/p\u003e \u003cp\u003eWireless QoS 281\u003c\/p\u003e \u003cp\u003ePolicing 284\u003c\/p\u003e \u003cp\u003eSingle-Rate, Two-Color Policing 284\u003c\/p\u003e \u003cp\u003eSingle-Rate, Three-Color Policing 285\u003c\/p\u003e \u003cp\u003eTwo-Rate Policing 287\u003c\/p\u003e \u003cp\u003eQueuing 288\u003c\/p\u003e \u003cp\u003eClass-Based Weighted Fair Queuing 288\u003c\/p\u003e \u003cp\u003eLow-Latency Queuing 293\u003c\/p\u003e \u003cp\u003eExplicit Congestion Notification 295\u003c\/p\u003e \u003cp\u003eShaping 295\u003c\/p\u003e \u003cp\u003eSummary 297\u003c\/p\u003e \u003cp\u003eExam Essentials 297\u003c\/p\u003e \u003cp\u003eExercises 298\u003c\/p\u003e \u003cp\u003eReview Questions 299\u003c\/p\u003e \u003cp\u003e\u003cb\u003eChapter 10 Network Virtualization 303\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eVirtual Machines, Hypervisors, and Network Virtualization 304\u003c\/p\u003e \u003cp\u003eVirtual Machines and Server Virtualization 305\u003c\/p\u003e \u003cp\u003eNetwork Virtualization 307\u003c\/p\u003e \u003cp\u003eGeneric Routing Encapsulation Tunnels 312\u003c\/p\u003e \u003cp\u003eConfiguring a GRE Tunnel to Tunnel IPv4 and IPv6 over IPv4 312\u003c\/p\u003e \u003cp\u003eRecursive Routing 318\u003c\/p\u003e \u003cp\u003eIP Security 319\u003c\/p\u003e \u003cp\u003eInternet Key Exchange 320\u003c\/p\u003e \u003cp\u003eEncapsulating Security Payload 320\u003c\/p\u003e \u003cp\u003eConfiguring IPsec in Transport Mode with a GRE Tunnel 321\u003c\/p\u003e \u003cp\u003eConfiguring IPsec in Tunnel Mode 324\u003c\/p\u003e \u003cp\u003eLocation\/ID Separation Protocol 326\u003c\/p\u003e \u003cp\u003eLISP Terminology 328\u003c\/p\u003e \u003cp\u003eConfiguring LISP 328\u003c\/p\u003e \u003cp\u003eSimulating IP Mobility 332\u003c\/p\u003e \u003cp\u003eIs LISP a Routing Protocol? 334\u003c\/p\u003e \u003cp\u003eVirtual Extensible Local Area Network 334\u003c\/p\u003e \u003cp\u003eMAC Address Learning 335\u003c\/p\u003e \u003cp\u003eForwarding 335\u003c\/p\u003e \u003cp\u003eConfiguring VXLAN 336\u003c\/p\u003e \u003cp\u003eVXLAN Control Planes 336\u003c\/p\u003e \u003cp\u003eConfiguring the Underlay 337\u003c\/p\u003e \u003cp\u003eConfiguring the Overlay 338\u003c\/p\u003e \u003cp\u003eConfiguring R1 and R2 339\u003c\/p\u003e \u003cp\u003eVirtual Routing and Forwarding 340\u003c\/p\u003e \u003cp\u003eConfiguring a VRF 340\u003c\/p\u003e \u003cp\u003eConfiguring Multi-VRF EIGRP 342\u003c\/p\u003e \u003cp\u003eSummary 345\u003c\/p\u003e \u003cp\u003eExam Essentials 345\u003c\/p\u003e \u003cp\u003eExercises 346\u003c\/p\u003e \u003cp\u003eReview Questions 347\u003c\/p\u003e \u003cp\u003e\u003cb\u003eChapter 11 Software-Defined Networking and Network Programmability 353\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eWhat Is Software-Defined Networking? 355\u003c\/p\u003e \u003cp\u003eSoftware-Defined Access 356\u003c\/p\u003e \u003cp\u003eSD-Access Layers 357\u003c\/p\u003e \u003cp\u003ePhysical Layer 357\u003c\/p\u003e \u003cp\u003eNetwork Underlay 358\u003c\/p\u003e \u003cp\u003eFabric Overlay 359\u003c\/p\u003e \u003cp\u003eController Layer 363\u003c\/p\u003e \u003cp\u003eManagement Layer 364\u003c\/p\u003e \u003cp\u003eSoftware-Defined WAN 369\u003c\/p\u003e \u003cp\u003evManage Network Management System 370\u003c\/p\u003e \u003cp\u003evSmart Controller 370\u003c\/p\u003e \u003cp\u003evBond Orchestrator 371\u003c\/p\u003e \u003cp\u003evEdge Routers 371\u003c\/p\u003e \u003cp\u003eNetwork Programmability and Automation 372\u003c\/p\u003e \u003cp\u003eThe Cisco DNA Center Intent API 372\u003c\/p\u003e \u003cp\u003evManage REST API 379\u003c\/p\u003e \u003cp\u003eNETCONF 383\u003c\/p\u003e \u003cp\u003eEmbedded Event Manager 386\u003c\/p\u003e \u003cp\u003eConfiguration Management Platforms 388\u003c\/p\u003e \u003cp\u003eSummary 391\u003c\/p\u003e \u003cp\u003eExam Essentials 391\u003c\/p\u003e \u003cp\u003eExercises 392\u003c\/p\u003e \u003cp\u003eReview Questions 393\u003c\/p\u003e \u003cp\u003e\u003cb\u003eChapter 12 Network Security and Monitoring 397\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eInfrastructure Security 398\u003c\/p\u003e \u003cp\u003eDevice Access 399\u003c\/p\u003e \u003cp\u003eAuthentication, Authorization, and Accounting 402\u003c\/p\u003e \u003cp\u003eAccess Control Lists 407\u003c\/p\u003e \u003cp\u003eControl Plane Policing 412\u003c\/p\u003e \u003cp\u003eCisco Security Products 414\u003c\/p\u003e \u003cp\u003eAnyConnect Secure Mobility Client 414\u003c\/p\u003e \u003cp\u003eUmbrella 414\u003c\/p\u003e \u003cp\u003eAdvanced Malware Protection ThreatGrid 414\u003c\/p\u003e \u003cp\u003eAdvanced Malware Protection for Endpoints 415\u003c\/p\u003e \u003cp\u003eFirepower Next-Generation Firewall 415\u003c\/p\u003e \u003cp\u003eTrustSec 416\u003c\/p\u003e \u003cp\u003eMAC Security 418\u003c\/p\u003e \u003cp\u003eWireless Security 418\u003c\/p\u003e \u003cp\u003eWebAuth 418\u003c\/p\u003e \u003cp\u003eConfiguring WPA2 with 802.1X 422\u003c\/p\u003e \u003cp\u003eConfiguring 802.1X on the Client 422\u003c\/p\u003e \u003cp\u003eConfigure Preshared Keys 424\u003c\/p\u003e \u003cp\u003eMonitoring 425\u003c\/p\u003e \u003cp\u003eConditional Debugs 425\u003c\/p\u003e \u003cp\u003eSimple Network Management Protocol (SNMP) 425\u003c\/p\u003e \u003cp\u003eSyslog 426\u003c\/p\u003e \u003cp\u003eNetwork Time Protocol 428\u003c\/p\u003e \u003cp\u003eNetFlow and Flexible NetFlow 429\u003c\/p\u003e \u003cp\u003eSwitched Port Analyzer 432\u003c\/p\u003e \u003cp\u003eIP Service Level Agreement 434\u003c\/p\u003e \u003cp\u003eSummary 436\u003c\/p\u003e \u003cp\u003eExam Essentials 437\u003c\/p\u003e \u003cp\u003eExercises 438\u003c\/p\u003e \u003cp\u003eReview Questions 439\u003c\/p\u003e \u003cp\u003eAppendix Answers to Review Questions 443\u003c\/p\u003e \u003cp\u003eChapter 1: Networking Fundamentals 444\u003c\/p\u003e \u003cp\u003eChapter 2: Spanning Tree Protocols 445\u003c\/p\u003e \u003cp\u003eChapter 3: Enterprise Network Design 447\u003c\/p\u003e \u003cp\u003eChapter 4: Wireless LAN (WLAN) 448\u003c\/p\u003e \u003cp\u003eChapter 5: Open Shortest Path First (OSPF) 450\u003c\/p\u003e \u003cp\u003eChapter 6: Enhanced Interior Gateway Routing Protocol (EIGRP) 451\u003c\/p\u003e \u003cp\u003eChapter 7: The Border Gateway Protocol (BGP) 453\u003c\/p\u003e \u003cp\u003eChapter 8: Network Address Translation and Multicast 454\u003c\/p\u003e \u003cp\u003eChapter 9: Quality of Service 456\u003c\/p\u003e \u003cp\u003eChapter 10: Network Virtualization 457\u003c\/p\u003e \u003cp\u003eChapter 11: Software-Defined Networking and Network Programmability 459\u003c\/p\u003e \u003cp\u003eChapter 12: Network Security and Monitoring 460\u003c\/p\u003e \u003cp\u003eIndex 463\u003c\/p\u003e","brand":"John Wiley \u0026 Sons Inc","offers":[{"title":"Default Title","offer_id":49407112118615,"sku":"9781119658757","price":37.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0817\/1739\/5799\/files\/9781119658757.jpg?v=1730498218","url":"https:\/\/bookcurl.com\/products\/ccnp-enterprise-certification-study-guide-implementing-and-operating-cisco-enterprise-network-core-technologies-9781119658757","provider":"Book 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