Cisco 2520-RF - 2520 Router Especificaciones Pagina 9
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Overview of the Router 1-5
Communications Server Services
• PPP
• SDLC
• X.25
Communications Server Services
The multiport router acts as a communications server to connect terminals, printers,
modems, microcomputers, and remote LANs over asynchronous serial lines to an
internetwork. The communications server uses a set of connection services to allow remote
networks access to an internetwork of LANs and WANs.
The router supports four types of server operation:
• Remote node services
• Terminal services
• Asynchronous routing services
• Protocol translation services
Remote Node Services
Remote node services support remote network connectivity with Serial Line Internet
Protocol (SLIP), Point-to-Point Protocol (PPP), or AppleTalk Remote Access Protocol
(ARA protocol).
Single users with laptop or desktop computing devices can access corporate data and many
other resources on the Internet using dialup lines. Figure 1-5 shows an example network.
- About This Guide 1
- Organization 2
- Conventions 2
- Overview of the Router 5
- Illo has been ordered 6
- Overview of the Router 1-3 7
- Router Hardware Features 7
- Port Configuration 8
- Remote Node Services 9
- Terminal Services 10
- Plain old 11
- IP or IPX 11
- System Specifications 12
- Obtaining Service and Support 13
- Cisco Connection Online 14
- Ordering Documentation 15
- Safety Recommendations 17
- General Site Requirements 20
- Configuring Equipment Racks 21
- Power Supply Considerations 22
- DTE or DCE 23
- Signaling Standards 25
- Router connections 27
- EIA/TIA-449 V.35 X.21 27
- EIA/TIA-232 EIA-530 27
- EIA/TIA-232 Connections 28
- EIA/TIA-449 Connections 28
- V.35 Connections 29
- X.21 Connections 30
- EIA-530 Connections 31
- Ethernet Connections 32
- Token Ring Connections 32
- BRI Connections 33
- Console Port Connections 34
- Auxiliary Port Connections 34
- Inspecting the System 35
- Installing the Router 37
- Setting Up the Chassis 38
- Rubber feet (5) 39
- Black adhesive strip 39
- Attaching the Brackets 40
- Installing the Router 3-5 41
- Wall-Mounting the Chassis 42
- Installing the Router 3-7 43
- DC Power Specifications 45
- Wiring the DC Power Supply 45
- Installing the Router 3-11 47
- Input: –40––72V 48
- Current: 1.5–1.0A 48
- Watts: 40W 48
- Connecting to a Network 49
- Installing the Router 3-15 51
- Specifications.” 53
- Installing the Router 3-19 55
- Input: 100-240VAC 56
- Freq: 50/60HZ 56
- Current: 1.2-0.6 A 56
- Configuring the Router 59
- Using Configuration Mode 61
- Using AutoInstall 62
- Using the Setup Facility 63
- Configuring the Router 64
- Configuring the Router 4-7 65
- Configuring the Router 4-11 69
- Setting Half-Duplex Mode 73
- Specifying the Boot Method 75
- Getting More Information 77
- Troubleshooting the Router 79
- Isolating Problems 80
- ° F (0to40°C) 80
- Reading the LEDs 81
- Maintaining the Router 83
- Opening the Chassis 84
- Screw Slot 85
- Flat-blade screwdriver 85
- CODE1 CODE0 86
- Upgrading the DRAM SIMM 87
- • ESD-preventive wrist strap 89
- • System-code SIMM(s) 89
- System-Code SIMM Replacement 90
- Maintaining the Router B-9 91
- Closing the Chassis 92
- Cable Specifications 95
- Identifying a Roll-Over Cable 96
- Token Ring Pinout 101
- EIA/TIA-232 104
- EIA/TIA-449 108
- <— indicates DCE to DTE 111
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