CCNA Complete Guide 2nd Edition.pdf - Cisco Learning Home

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ISO-TP: OSI Transport Layer Protocols - The OSI suite defines the following 5 transport layers protocols: TP0 (Transport Protocol Class 0) Performs segmentation and reassembly functions. TP1 (Transport Protocol Class 1) Performs segmentation, reassembly, and error recovery. It segments and sequences PDUs and retransmits them or reinitiates the connection if an excessive number of PDUs are unacknowledged. TP2 (Transport Protocol Class 2) Performs segmentation, reassembly, and multiplexing. TP3 (Transport Protocol Class 3) Performs segmentation, reassembly, error recovery, and multiplexing. It segments and sequences PDUs and retransmits them or reinitiates the connection if an excessive number of PDUs are unacknowledged. TP4 (Transport Protocol Class 4) Same with TP3. It is the most commonly used among OSI transport protocols. Similar to TCP in the TCP/IP suite. - The protocols increase in complexity from Class 0 to 4. 243 Copyright © 2008 Yap Chin Hoong yapchinhoong@hotmail.com
The TCP Connection States timeout send: RST SYN_RECEIVED App: close send: FIN FIN_WAIT_1 App: passive open send: - recv: SYN send: SYN, ACK recv: ACK App: close . send: FIN recv: FIN . send: ACK recv: FIN, ACK . send: ACK recv: RST CLOSED LISTEN passive open recv: RST ESTABLISHED CLOSING recv: FIN . FIN_WAIT_2 TIME_WAIT send: ACK Figure A6-4: The TCP Finite State Machine - In this context of discussion, a client is the peer that requests a connection; and a server is the peer that accepts a connection. - Handshake is a series of information exchanged between devices to ensure both ends are synchronized for data transmission and operation. 244 App: send data . send: SYN recv: SYN . send: SYN, ACK simultaneous open data transfer state recv: ACK recv: ACK active close simultaneous close App: active open send: SYN recv: SYN, ACK . send: ACK recv: FIN . send: ACK 2 x MSL timeout SYN_SENT active open CLOSE_WAIT LAST_ACK App: close send: FIN passive close App: close . or timeout recv: ACK . send: - Normal transition for client Normal transition for server App: Application issues operation recv: Transition when segment received send: Transition when segment sent Copyright © 2008 Yap Chin Hoong yapchinhoong@hotmail.com
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CCNA Complete Guide 2nd Edition Yap
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CCNA Complete Guide 2nd Edition Cop
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Upper Layers Lower Layers Applicati
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Cisco Hierarchical Model - Defined
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This page is intentionally left bla
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Header Length (4) Source Port (16)
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- Socket is a communication channel
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- The length of an IP address is 32
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- The following section discusses s
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- Below lists the 2 sublayers in th
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- Each switch port does not share t
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- Below lists the switch internal p
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Physical Layer - The physical layer
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- Another way to reduce emissions i
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Figure 3-7: Single-Mode and Multimo
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Wireless AP Switch Figure 3-8: 802.
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- Below lists the common IOS CLI er
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RT1#show running-config interface F
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- Cisco IOS treats a mistyped comma
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- Below describes the STP convergen
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- Refer back to Figure 5-1B, assume
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- A switch running RSTP only need 6
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Port Security Configuration - Port
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SW2# 00:25:00: STP: VLAN0001 new ro
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- Both protocols utilize a 12-bit V
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Layer 4 Switching (Content Switchin
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- VTP Pruning provides a way to pre
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VLAN Trunking Protocol Configuratio
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- VLAN information will not be prop
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- Private IP addresses are non-rout
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- Some materials calculate the numb
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Cisco Discovery Protocol (CDP) c250
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- CDP is enabled by default. The no
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Troubleshooting IP - Internet Contr
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- Firstly, PC1 purposely sends out
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- Below describes the operation of
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Maximum Hop Count Hop count metric
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- Invalid Timer specifies how long
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- Initial configuration on RT2: Rou
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- Static Routing configuration on R
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- RIPv1 and IGRP are classful routi
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- IGRP configuration on RT2: RT2(co
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MISC IP Routing Commands - The pass
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- OSPF uses a reliable protocol to
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- OSPF areas break up a network so
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- EIGRP uses the same formula as us
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- Autosummarization EIGRP supports
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- OSPF Single-Area configuration on
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- The show ip ospf database EXEC co
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OSPF Multiarea Configuration Area 1
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- Below lists the different termino
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- Verify the EIGRP configuration on
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- When a link to a neighbor fails,
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- Below shows the beauty of VLSM. B
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- RT1 and RT3 are summarizing route
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- RIPv1 and IGRP perform autosummar
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RT1#sh ip route Gateway of last res
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MTU and Fragmentation - Maximum Tra
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- Figure 17-1 shows the usage of CI
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- Static NAT performs one-to-one ma
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172.16.1.1 172.16.1.2 172.16.1.3 17
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- Below shows the IP NAT debugging
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- The access list indicates whether
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- Access Control List (ACL) is the
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- Below lists some other usages of
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- Standard IP Access Lists configur
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RT2#sh access-lists example01 Exten
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WAN Network RT1 CSU/DSU CSU/DSU RT2
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Remote Access Technologies - Remote
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Digital Subscriber Lines (DSL) - DS
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Point-to-Point Serial Links (Leased
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- Comparisons between synchronous a
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- PPP Encapsulation configuration o
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- The function of the username {rem
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- 3 LMI protocol options are availa
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- Comparisons between Frame Relay L
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RT1 RT2 RT3 Figure 23-7A: RT1 with
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- IETF Frame Relay encapsulation ty
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RT1 Frame Relay RT2 DLCI 101 Frame
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- The interface serialx.y point-to-
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- Frame Relay Multipoint Subinterfa
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- Rate Shifting or Adaptive Rate Se
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- By operating in the 5GHz radio ba
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- Every packet from every access po
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Virtual Interface (mandatory) Servi
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Wireless Security - Organizations t
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Wireless Management - WLANs require
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Cisco Wireless LAN Configuration -
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- ISDN offers very fast call setup
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- ISDN was designed to reuse the ex
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Page 199 and 200: DDR Step 4: Determining when to ter
Page 201 and 202: - The show interfaces bri{num:0 | 1
Page 203 and 204: DDR Dialer Profiles Configuration -
Page 205 and 206: - Note: IP addresses are configured
Page 207 and 208: - Below show the routing tables on
Page 209 and 210: - The configuration above defines 2
Page 211 and 212: cisco Systems, Inc. 170 West Tasman
Page 213 and 214: Catalyst Switch IOS Upgrade Procedu
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Page 217 and 218: Cisco Router Password Recovery Proc
Page 219 and 220: Catalyst Switch Password Recovery P
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Page 223 and 224: - The 3 possible Frame Relay PVC st
Page 225 and 226: Constructing a Compound Frame Relay
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Page 235 and 236: Decimal Hex Binary Decimal Hex Bina
Page 239 and 240: MISC Basic Networking Notes - The m
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Page 243 and 244: - The 5-4-3 repeater deployment rul
Page 245: Ethernet Autonegotiation and Duplex
Page 249 and 250: - Q: How does a client application
Page 251 and 252: - Urgent Data Pointer (16 bits) ind
Page 253 and 254: TCP Selective Acknowledgment (SACK)
Page 255 and 256: - Local Proxy ARP is used when ther
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Page 261 and 262: - Sample Subnet Zero configuration:
Page 263 and 264: The permanent keyword in the Static
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Page 289 and 290: IEEE 802.11 Standards and Specifica
Page 291 and 292: - Figure A6-20 shows the frame form
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Client (Supplicant) EAPOL-Start EAP
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- IPsec-based VPN is comprised of 2
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- IPsec supports the following 3 ty
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Version Header Length Time To Live
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- The authentication pre-share ISAK
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Troubleshooting ISDN E1/T1 Physical
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- Below addresses ISDN E1/T1 contro
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Troubleshooting ISDN Layer 2 - Unde
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Troubleshooting ISDN Layer 3 - Only
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ISDN Loopback Test Call - In a loop
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96 Number changed. The called numbe
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C2 Channel type not implemented. Th
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locking state, STP, 39 BNC, 27 bool
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show vlan, 57 show vtp status, 58 s
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framing, 22 MAC addresses, 22 stand
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K keepalives EIGRP, 95 Frame Relay,
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PAT (Port Address Translation), 127
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star topologies, 25 startup-config
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