The Illustrated Network- P82:In this chapter, you will learn about the protocol stack used on the global public Internet and how these protocols have been evolving in today’s world. We’ll review some key basic defi nitions and see the network used to illustrate all of the examples in this book, as well as the packet content, the role that hosts and routers play on the network, and how graphic user and command line interfaces (GUI and CLI, respectively) both are used to interact with devices. | Index 779 routing 218-19 routing tables 322-23 SNMP 610-11 sockets 302-3 SONET link display 76-78 SSH 634-35 SSL 586-87 TCP 280-81 UDP 260-61 VLANs 660-61 VoIP 736-37 VPLS 673 Web servers 560-61 Web sites 586-87 wireless link display 81-83 In-band management 248 Independent basic service set IBSS 98 Indirect delivery 229 packet destination address 232-33 router and 231-34 Informational RFCs 20 Ingress routers 446 450 Institute of Electrical and Electronics Engineers IEEE . See IEEE IEEE Integrated Information Services IIS 562 Integrated Services Digital Network ISDN 85 90 DSL as extension 94 Integrity 593-94 Integrity check value ICV 723 Inter-Domain Routing Protocol IDRP 379 Interface addresses 212-13 Interfaces 27-28 application layer 52 GRE 241 for packets 84 routers 233-34 TCP IP application 11 Interior BGP IBGP 382 389-90 full mesh 392 need for 390 peers 391 sessions 389 uses 389 See also Border Gateway Protocol BGP Interior gateway protocols IGPs 342 345 bootstrapping themselves 354 next hops 390 shortcuts 447 types of 354 Interior Gateway Routing Protocol IGRP 355 Enhanced EIGRP 355 364-65 RIP improvement 365 Intermediate device control 638 Intermediate System-Intermediate System IS-IS 345 354 areas 374 attraction 373 backbone area 373 DIS 375 IPv6 376 as link-state protocol 354 LSP handling 375 metrics 375 M-ISIS 413 network addresses 375 network types 375 OSPF and 373-74 OSPF differences 374-75 OSPF similarities 374 route leaking 374 routers 373 Intermediate systems 6 as TCP IP device category 26 Internal representation conversion 41-42 International Standards Organization ISO 17-18 International Telecommunications Union -Telecommunications sector ITU-T 18 Internet administration 21-22 autonomous system and 332-34 backbone routers 246 connectivity check 195 drafts 18 19 21 standards 18 20 today 334-36 zones 489 Internet Architecture Board IAB 22 Internet Assigned Numbers Authority IANA 421 Internet Control Message Protocol ICMP 189-215 .