31 Days Before Your CCNA Exam

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390 IP multicastIP multicast, 72ip ospf cost command, 236ip ospf priority interface command, 237ip route command, static routes, 191IP telephony, 72ipconfig/release commands, 131ipconfig/renew command, 131IPsec Security Protocols, VPNs, 325IPv4addressesclasses of addresses, 110-111header formats, 109-110subnet masks, 111-112versus IPv6, 137IPv6addressesconventions for writing, 139global unicast addresses, 140-141loopback addresses, 141managing, 142private addresses, 141reserved addresses, 141interface ID and EUI-64 format, 141-142versus IPv4, 137overview of, 137-138prefixes, conventions for writing, 139-140transitioning to, 142-143ISATAP (Intrasite Automatic TunnelAddressing Protocol), 143ISDN, circuit-switched connections(WAN), 315-316ISL (Inter-Switch Link), 103ISP (Internet service provider), configurations,355-356ITU-R, 253J–K–Ljitter, 18LAN cabling, standards for, 6LAN switches, 45interface status codes, 65-66LANs (local-area networks), 7Layer 1 problems, troubleshooting, 350Layer 1 problems, up interfaces, 67Layer 2 problems, troubleshooting,350-351Layer 2 switching, 46Layer 3 problems, troubleshooting,351-352Layer 3 switching, 46layersOSI models, 14-15TCP/IP models, 15-16troubleshooting with, 29LCP (PPP Link Control Protocol),332-333legacy Ethernet technologies, 34-36CSMA/CD, 35link-local addresses, 141link-state advertisements (LSA), 228link-state database (LSDB), building,156-157link-state protocols, converging withlink-state routing protocols, 158link-state routing process, OSPF, 232-233link-state routing protocols, 151, 156calculating Dijkstra algorithms, 157-158convergence with link-state protocols, 158LSDB, building, 156-157LLC (Logical Link Control) sublayer, 34LMI (Local Management Interface)Frame Relay, 339-343local access rate, Frame Relay, 338local loop, 309Local Management Interface (LMI),Frame Relay, 339Logical Link Control (LLC) sublayer, 34logical switching, 44-45logical topologies, 9loopback addresses, IPv6, 141loopback configurations, OSPF, 235looped link detection, LCP, 332loss, 18low delay, 18LSA (link-state advertisements), 156,228-229LSack (link-state acknowledgment) packets,OSPF, 228
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31 Days BeforeYour CCNA ExamSecond
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ixThe TCP/IP Application Layer 21Th
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xiDuplex and Speed Mismatches 66Com
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xiiiDay 20: Host Addressing, DHCP,
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xvThe Cisco IOS File System 179IFS
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xviiRouter ID 235Modifying the OSPF
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xixTypes of ACLs 280ACL Identificat
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xxiDay 3: PPP Configuration and Tro
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xxiiiPart IX: Exam Day and Post-Exa
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xxv■■■■■Italic indicates
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xxviiand advancing their IT careers
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xxixA simlet is similar to a testle
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Part INetworking BasicsDay 31:Day 3
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Day 31Network Devices, Components,
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Day 31 5■■■Redundant componen
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Day 31 7LANs and WANsA local-area n
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Day 31 9Logical topologies refer to
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Day 31 11Figure 31-5An Example of t
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Day 30Network Models and Applicatio
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Day 30 15The following mnemonic phr
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Day 30 17Growth of Network-Based Ap
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Day 30 19Study ResourcesFor today
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Day 29Network Data Flow from End-to
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Day 29 23Figure 29-1TCP Header Fiel
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Day 29 25Flow ControlFlow control i
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Day 29 27The TCP/IP Network Access
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Day 29 29Using Layers to Troublesho
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Part IISwitching Concepts andConfig
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Day 28Connecting Switches and Ether
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Day 28 35Figure 28-3Ethernet Physic
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Day 28 37Figure 28-4TIA/EIA Standar
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Day 28 39Ethernet FramingThe physic
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Network Segmentation andSwitching C
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Day 27 45Figure 27-1Switch Forwardi
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Day 27 47Figure 27-2Sources for Cis
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Day 27 49Keyboard CommandWhat Happe
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Day 27 51Storing and Erasing Config
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Day 26Basic Switch Configuration an
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Day 26 55■■Although the enable
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Day 26 57Table 26-2Actions When Por
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Day 25Verifying and Troubleshooting
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Day 25 63By using the ping command
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Day 25 65Example 25-4Tracing the Ro
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Day 25 67Output queue: 0/40 (size/m
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Day 25 69Sending CDPv2 advertisemen
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Day 24Switching Technologies and VL
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Day 24 73■■■■Black hole VLA
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Day 24 75Figure 24-3Fields of the 8
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Day 24 77Notice in the figure that
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Day 24 79■■Multiple frame trans
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Day 24 81The main changes with RSTP
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Day 24 83Figure 24-8 shows a simple
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Day 23VLAN and Trunking Configurati
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Day 23 89S2(config-vlan)#end%SYS-5-
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Day 23 91Operational private-vlan:
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Day 23 93Administrative Mode: trunk
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Day 22VTP and InterVLAN RoutingConf
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Day 22 99Example 22-2Configuring th
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Day 22 101Local updater ID is 0.0.0
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Day 22 103b. The switches must have
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Day 22 105To verify the configurati
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Part IIIAddressing the NetworkDay 2
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Day 21IPv4 Address SubnettingCCNA 6
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Day 21 111Note Today your ISP assig
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Day 21 113The best way to demonstra
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Day 21 1151. There are 16 host bits
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Day 21 117■ Subnet 0: 172.30.4.0/
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Day 21 119Step 5Count the number of
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Day 21 121Resource Chapter Topic Wh
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Day 20Host Addressing, DHCP, and DN
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Day 20 125Figure 20-3 ARP Maps Laye
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Day 20 127■■■■■.au: Austr
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Day 20 129Figure 20-5DHCP Sample To
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Day 20 131Primary Dns Suffix . . .
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Day 20 133Reply from 192.168.10.1:
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Day 19Basic IPv6 ConceptsCCNA 640-8
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Day 19 139IPv6 Address StructureYou
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Day 19 141The current global unicas
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Day 19 143■■Dual stacking: An i
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Part IVRouting Concepts and Configu
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Day 18Basic Routing Concepts■■D
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Day 18 149PC2 sends back an ARP rep
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Day 18 151Some distance vector prot
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Day 18 153C 192.168.2.0/24 is direc
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Day 18 155Table 18-3Comparing Featu
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Day 18 157Figure 18-3 shows the rat
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Day 17Connecting and Booting Router
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Day 17 163Figure 17-1How a Router B
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Day 17 165Figure 17-3WAN Connection
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Basic Router Configuration andVerif
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Day 16 169Next, name the router and
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Day 16 171The IP address should be
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Day 16 173Outputoutputoutput hangLa
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Day 16 175Verifying Network Connect
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Day 15Managing Cisco IOS andConfigu
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Day 15 181Example 15-3Listing Direc
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Day 15 183Figure 15-3Sample IOS Ima
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Day 15 185Restoring an IOS ImageVer
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Day 15 187The pertinent command for
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Day 14Static, Default, and RIP Rout
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Day 14 193The remote networks that
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Day 14 195Example 14-5R2 Routing Ta
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Day 14 197The trace is successful b
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Day 14 199In Figure 14-3, we are us
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Day 14 201Figure 14-4Interpreting s
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Day 14 203Passive InterfacesIn the
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Day 14 205Assuming all interfaces a
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Day 14 207Example 14-17 Verifying D
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Day 14 209■■■■Make sure tha
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Day 13EIGRP RoutingCCNA 640-802 Exa
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Day 13 213Figure 13-2EIGRP Packet H
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Day 13 215Figure 13-3EIGRP Configur
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Day 13 217Now R3 will send traffic
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Day 13 219EIGRP Default RouteThe
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Day 13 221The seconds value for bot
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Day 13 223EIGRP-specific terms you
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Day 13 225Figure 13-6DUAL Finite St
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Day 12OSPF RoutingCCNA 640-802 Exam
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Day 12 229Figure 12-2OSPF Packet He
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Day 12 231The following criteria is
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Day 12 2333. Each router builds a l
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Day 12 235Example 12-1Configuring O
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Day 12 237Table 12-4Equivalent band
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Day 12 239Example 12-5Modifying Hel
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Day 12 241router is advertising, th
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Day 12 243As highlighted in Example
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Day 11Troubleshooting RoutingCCNA 6
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Day 11 247However, if any link betw
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Day 11 249OSPF and EIGRP both use H
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Part VWireless Concepts andConfigur
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Day 10Wireless Standards, Component
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Day 10 255Table 10-4FCC Unlicensed
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Day 10 2574. After the entire frame
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Day 10 259Table 10-7Comparisons of
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Day 9Configuring and Troubleshootin
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Day 9 263— SSID, which is a 32-ch
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Basic Security Concepts andConfigur
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Day 8Mitigating Security Threats an
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Day 8 269Sometimes employees choose
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Day 8 271Threats to Physical Infras
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Day 8 273General Mitigation Techniq
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Day 8 275Maintaining SecurityThe ne
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ACL and NAT Concepts andConfigurati
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Day 7ACL Concepts and Configuration
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Day 7 281■Reduce the amount of ty
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Day 7 283RouterX(config)#access-lis
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Day 7 285Command Parametersource an
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Day 7 287Extended Named ACL Steps a
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Day 6Verifying and Troubleshooting
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Day 6 291permit tcp host 10.22.22.1
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Day 6 293Example 6-7Solution 2: Cor
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Day 6 295Example 6-13Solution 5: Co
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Day 5NAT Concepts, Configuration, a
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Day 5 2994. R2 modifies the packet
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Day 5 301Configuring Static NATStat
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Day 5 303Configuring NAT OverloadCo
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Day 5 305Use the debug ip nat comma
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Part VIIIWAN Concepts and Configura
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WAN and VPN TechnologiesDay 4CCNA 6
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Day 4 311Figure 4-2 shows the name
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Day 4 313■■Connectionless syste
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Day 4 315Figure 4-6Analog DialupPST
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Day 4 317Frame Relay differs from X
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Day 4 319Broadband WirelessUntil re
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Day 4 321Figure 4-12Site-to-Site VP
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Day 4 323VPN TunnelingTunneling use
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Day 4 325An HMAC has two parameters
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Day 4 327Resource Chapter Topic Whe
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Day 3PPP Configuration andTroublesh
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Day 3 331Verifying HDLCWhen configu
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Day 3 333PPP MultilinkIn a redundan
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Day 3 335CHAPAlthough CHAP is optio
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Frame Relay Configuration andTroubl
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Day 2 339■■■■■As shown in
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Day 2 341Inverse ARP and LMI Concep
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Day 2 3436. Every 60 seconds, route
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Day 2 345Example 2-2Frame Relay Ful
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Day 2 347Note The broadcast keyword
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Day 2 349Troubleshooting WAN Implem
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Day 2 351The first problem is easy
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Day 1CCNA Skills Review and Practic
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Day 1 355Device Interface IP Addres
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Day 1 357— The www.xyzcorp.com we
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Day 1 359Task 10: Configure DHCPSte
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Day 1 361copy run start!-----------
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Day 1 363interface fa0/0ip nat insi
Page 790: Day 1 365Step 2Verify routing table
Page 794: Day 1 367Task 7: Configure VTP, Tru
Page 798: Day 1 369VTP Pruning Mode: Disabled
Page 802: Day 1 371Step 3Verify that B1-S1 is
Page 806: Day 1 373Step 2Implement a basic fi
Page 810: Part IXExam Day and Post-ExamInform
Page 814: Exam DayToday is your opportunity t
Page 818: Post-Exam InformationThe accomplish
Page 822: IndexSymbols3DES (Triple DES), 3231
Page 826: commands 383Cisco IOS Integrated Fi
Page 830: devices 385trunking, 91-93VLANs, 88
Page 834: flow control, TCP/IP 387EIGRP routi
Page 838: ip helper-address command 389hub-an
Page 844: 392 neighbor adjacency issues, trou
Page 848: 394 PVC (permanent virtual circuit)
Page 852: 396 static routing, dynamic routing
Page 856: 398 URL prefixes for specifying fil
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Page 866: CCNA Countdown CalendarThe lines af
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