J K L

jitters (voice/video applications), 318, 526

Kismet, 656

L2 (Layer 2) switching, 132-133, 137-138 L3 (Layer 3) switching. See multilayer switches Label Distribution Protocol, 302 LAN (Local Area Networks), 4, 11 OSI model, 7 protocols, 6 standards, 11 switches, 15 VLAN, 47

membership in, 48 routing, 51 STP, 49-50 trunks, 49 WLAN, 565-566

802.311 operational standards,

571-577 absorption (RF), 567 agencies and standards groups,

570-571 antennas, 570, 573 AP power, 578-579 AP, BSS, 579 AP, SSID, 579 autonomous AP, 578 centralized components, 182-183 Cisco Compatible clients, 577 dB (RF), 568 dBi (RF), 569 dBm (RF), 568-569 dBw (RF), 569 diffraction (RF), 567 gain (RF), 568-570 lightweight AP, 578, 582-585 loss (RF), 568 multipaths (RF), 567 reflection (RF), 567 refraction (RF), 567 roaming, 579 scattering (RF), 567 security, 580-581 topologies, 577

LAN protocols, 847 LAN switches, QoS, 241-244 large branch office architectures (Enterprise Branch architectures), WAN architectures, 361-362 mu-law (companding), 482 Layer 2 load sharing, Enterprise Campus networks, 244-245

Layer 2 switches, 38-41

Layer 3 load sharing, Enterprise Campus networks, 245 Layer 3 routing protocols, deploying between building distribution layer and Campus Core layer (Enterprise Campus networks), 255-256 Layer 3 switches, 41-42 Layer 3 tunneling, WAN backups, 341-343 layers of OSI model application layer, 854

communication between, 848

control information, 849

data link layer, 851-852

information exchange process, 850-851

network layer, 852

physical layer, 851

presentation layer, 853-854

service provider, 848

service user, 848

session layer, 853

transport layer, 853

LD-CELP (Low-Delay-Code Excited Linear Prediction Compression), voice networks, 530

LEAP (Lightweight Extensible

Authentication Protocol), UWN, 587 learning state (STP), 46 leased lines

TDM, 299-300 WAN, 12, 295 leased WAN, 321 legislation

Canadian Personal Information Protection and Electronic Documents Act, The (PIPEDA), 653 European Union Data Protection Directive

95/46/EC, 653 GLBA (The U.S. Gramm-Leach-Bliley Act of 1999), 652 HIPPA (The U.S. Health Insurance

Portability and Accountability Act), 652 PIPEDA (The Canadian Personal

Information Protection and Electronic Documents Act), 653 SOX (The U.S. Sarbanes-Oxley Act of 2002), 653

U.S. Gramm-Leach-Bliley Act of 1999, The (GLBA), 652

U.S. Health Insurance Portability and

Accountability Act, The (HIPPA), 652 U.S. Sarbanes-Oxley Act of 2002, The (SOX), 653

LFI (Link Fragmentation and Interleaving), 524

lifecycle network design methodology, 66-67 lightweight AP (Access Points), 597

Bridge mode, 602 Local mode, 601 LWAPP WLC

discovery algorithm, 599 discovery process, 598-599 selection, 599-600 Monitor mode, 601 REAP mode, 601 Rogue Detector mode, 601 Sniffer mode, 601 WLAN, 578, 582-585 WLC control messages, 600-601

link-local unicast IPv6 addresses, 411 link redundancy, modular networks, 175-176 link-state protocol, 434-437, 444 links backup links, 176

efficiency techniques, voice networks, 541 UDLD (Cisco STP toolkit), 250 WAN

backup links, 338-339 design, 325-329

permanent secondary links, 338-339

listening state (STP), 46

LLC (Logical Link Control) sublayer (OSI

model, data link layer), 7 LLQ (Low Latency Queuing), 329, 540 load balancing, 173-174, 622 load sharing, Enterprise Campus networks,

244-245 local-loop signaling, 490 local loops, voice networks, 488 local MAP, branch office wireless networks, 638

Local mode (lightweight AP), 601 location-based CAC, 541-542 logical addresses, network layer addresses, 32-33

loop starts, analog signaling, 491 loss (RF), 568

LRE (Long Reach Ethernet), ADSL, 307 LSDB (Link-State Databases), 436 LSP (Label-Switched Paths), 302 LSR (Label-Switched Routers), 301-303 LWAPP (Lightweight Access Point Protocol), UWN, 588-589

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