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Objectives

Objectives. Upon completion of this chapter, you will be able to perform the following tasks: Identify and connect necessary components to enable connectivity between routers or switches Identify and connect necessary components to enable WAN connectivity over serial or ISDN BRI connections

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Objectives

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  1. Objectives • Upon completion of this chapter, you will be able to perform the following tasks: • Identify and connect necessary components to enable connectivity between routers or switches • Identify and connect necessary components to enable WAN connectivity over serial or ISDN BRI connections • Set up console connections between routers, switches and a terminal

  2. Cabling the Campus Legend FastEthernet/ Ethernet ISDN Dedicated Core_Server core_sw_a Leased Line/ Frame Relay ISDN Cloud

  3. LAN Physical Layer Implementations • Physical layer implementations vary • Some implementations support multiple physical media Data Link (MAC layer) 802.3 Ethernet Physical 10Base2 10Base5 100baseTX 100baseFX 100baseT4 10BaseT 10BaseF DIX Standard 802.3 Specifications for 10MB Ethernet 802.3u Specifications for 100MB (Fast) Ethernet

  4. Positioning Ethernet in the Campus Ethernet 10BaseT Position Fast Ethernet Position Access Layer Provides connectivty between the end user device and the access switch. Access Layer Gives high-performance PC and workstations 100-Mbps access to the server. Distribution Layer Distribution Layer Not typically used at this layer. Provides connectivity between access and distribution layers. Provides connectivity from the distribution to core layer. Provides connectivity from the server block to the core layer. Core Layer Provides inter-switch connectivity. Not typically used at this layer. Core Layer

  5. Comparing Ethernet Media Requirements 100BaseTX 10Base5 10BaseT 100BaseFX 62.5/125 micron multi-mode fiber EIA/TIA Cat 3, 4, 5 UTP 2 pair EIA/TIA Cat 5 UTP 2 pair 50-ohm coax (thick) Media Maximum Segment Length 500 meters 100 meters 100 meters 400 meters Bus Star Star Topology Point-to-Point Duplex media- interface connector (MIC) ST ISO 8877 (RJ-45) ISO 8877 (RJ-45) AUI Connector

  6. Differentiating between Connections ISO 8877 (RJ-45) connectors and jacks are slightly larger than RJ-11 phone connectors and jacks AUI connectors are DB15 Fiber Connector Port

  7. UTP Device Wire Pair T is Tip R is Ring Pin 1 Pair 3 T2 2 Pair 3 R2 1 3 Pair 2 T3 4 Pair 1 R1 5 Pair 1 T1 8 6 Pair 2 R3 7 Pair 4 T4 The RJ-45 Connector 8 Pair 4 R4

  8. 8 1 8 1 w g g w o b w b o w br br w g g w o b w b o w br br UTP Implementation Straight-through Cable 10BaseT/100BaseTx Straight-through Straight-through Cable 8 1 Hub/Switch Server/Router 8 1 Pin Label 1 TD+ 2 TD- 3 RD+ 4 NC 5 NC 6 RD- 7 NC 8 NC Pin Label 1 RD+ 2 RD- 3 TD+ 4 NC 5 NC 6 TD- 7 NC 8 NC Wires on cable ends are in same order

  9. 8 1 w b br wbr g wg o wo b UTP Implementation Crossover Cable 10BaseT/100BaseT Crossover Crossover Cable Hub/Switch Hub/Switch 8 1 Pin Label 1 RD+ 2 RD- 3 TD+ 4 NC 5 NC 6 TD- 7 NC 8 NC Pin Label 1 RD+ 2 RD- 3 TD+ 4 NC 5 NC 6 TD- 7 NC 8 NC 1 8 8 1 wg wbr wo w b br b o g Some wires on cable ends are crossed

  10. UTP Implementation of Straight-through versus Crossover 2x 1x 4x 3x Use straight-through when only one port is designated with an X. 2x 1x 4x 3x 2x 4x 3x 1x Use a crossover cable when BOTH ports are designated with an x or neither port is designated with an x.

  11. Cabling the Campus • Determine the physical media used- 10MB or 100MB Indicates what type of CAT cable is required • Locating interfaces on the chassis- determine if one or both ports have an X Indicates if need crossover or straight-through cable 100 Mbps Cat 5 Crossover 10 Mbps Cat 3, 4, 5 Crossover 10 Mbps Cat 3, 4, 5 Straight-through 10 Mbps Cat 3, 4, 5 Straight-through 100 Mbps Cat 5 Straight-through

  12. Cabling the WAN Legend FastEthernet/ Ethernet ISDN Dedicated ISL Core_Server core_sw_b core_sw_b core_sw_a Leased Line/ Frame Relay ISDN Cloud

  13. WAN Physical Layer Implementations • Physical layer implementations vary • Cable specifications define speed of link Frame Relay PPP HDLC ISDN BRI (with PPP) RJ-45 NOTE: Pinouts are different than RJ-45 used in campus EIA/TIA-232 EIA/TIA-449 X.21 V.24 V.35 HSSI

  14. Differentiating Between WAN Serial Connectors Router connections End user device DTE CSU/DSU DCE Service provider EIA/TIA-232 EIA/TIA-449 V.35 X.21 EIA-530 Network connections at the CSU/DSU

  15. S S S S S S Serial Implementation ofDTE versus DCE • DTE/DCE—The point where responsibility passes Data Terminal Equipment End of the user’s device on the WAN link • Data Communications Equipment • End of the WAN provider’s side of the communication facility • DCE is responsible for clocking Modem CSU/DSU DCE DTE DCE DTE DCE DTE

  16. Fixed Interfaces 2500 Router—rear view Serial WAN ports can be fixed

  17. Modular Interfaces WAN Interface Card Serial WAN ports can be modular 1603 Router—rear view Module Ethernet 10BaseT Ethernet AUI ISDN BRI S/T Console 3640 Router—rear view

  18. Cabling Routers for ISDN Connections Determine if you need a BRI S/T or U Interface Routers have one or both types of ports Note port Label

  19. Cabling Routers for ISDN Connections (cont.) Cisco Router ISDN BRI port !!!WARNING!!! Do not connect a cable into an ISDN port unless it is from an ISDN switch or ISDN wall jack. If you connect a cable from any other device into the BRI port, you will ruin the non-ISDN device.

  20. PCs require an RJ-45 to DB-9 or RJ-45 to DB-25 adapter COM port settings are 9600 bps, 8 data bits, no parity, 1 stop bit, no flow control This provides out-of-band console access AUX switch port may be used for modem-connected console Setting up a Console Connection Device with console

  21. Visual Objective wg_pc_a console A/B e0/1(1x) console e0/2 (2x) e0 fa0/26 (Ax) s0 wg_ro_a wg_sw_a bri0 wg_pc_l console e0/1(1x) A/B s0 console fa0/26 (Ax) e0/2 (2x) e0 LL/FR wg_ro_l wg_sw_l bri0 ... ISDN ... fa0/1(1x) fa0/12(12x) fa0/24(24x) s3/0 s1/0 - s2/3 fa0/23 (23x) fa0/0 core_ server core_sw_a core_ro

  22. Summary • After completing this chapter, you should be able to perform the following tasks: • Identify and connect necessary components to enable connectivity between switches and routers • Identify and connect necessary components to enable WAN connectivity between over serial or ISDN BRI connections • Set up console connections on routers and switches

  23. 1 8 1 8 w0 wg w b wbr o b g br wg wo w b wbr g b o br Review Questions 1. Discuss three standards on which Ethernet LAN implementations are based. 2. If you want to upgrade your switch to switch connectivity to 100BaseT, what category of cable do you need? 3. Does the following pinout scheme reflect a straight-through, rollover, or crossover cable? 4. What media can be used for each connector type? A C B

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