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2-4

Planning Repeater Installation

Writer:

Chris Seiter

Project:

Planning Repeater Installation

Comments:

185812-002/707113-001

File Name:

10100_2.DOC

Last Saved On:

3/14/96 11:00 AM

Tables 2-1 and 2-2 show the wiring in a straight-through and crossover
twisted-pair cable. (Pins 4, 5, 7, and 8 are not used, but must be terminated
[connected to wires] for 100 Mb/s operation.)

Table 2-1

Straight-Through Twisted-Pair Wiring

Twisted Pair Number

Pin

Number

Signal

Description

Pin

Number

Signal

Description

TD+

TD-

➔

TD+

TD-

RD+

RD-

➔

RD+

RD-

Table 2-2

Crossover Twisted-Pair Wiring

Twisted Pair Number

Pin

Number

Signal

Description

Pin

Number

Signal

Description

TD+

TD-

➔

RD+

RD-

RD+

RD-

➔

TD+

TD-

Summary of Contents for Netelligent 1224

Page 1: ...Netelligent 1224 10Base T 100Base TX Repeater User Guide...

Page 2: ...written consent from Compaq Computer Corporation The software described in this guide is furnished under a license agreement or non disclosure agreement The software may be used or copied only in acc...

Page 3: ...Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may caus...

Page 4: ...2 CISPR 22 Electromagnetic Interference EN50082 1 IEC801 2 IEC801 3 IEC801 4 Electromagnetic Immunity EN60950 IEC950 Product Safety Safety This equipment complies with UL 1950 Second Edition CAN CSA C...

Page 5: ...verview 1 4 LED Indicators 1 5 10 ONLY 10 100 Switch 1 5 RJ 45 Ports 1 7 Uplink Switches 1 7 Display Mode Button 1 8 Automatic Speed Detection 1 9 Chapter 2 Planning Repeater Installation Installation...

Page 6: ...ing the Uplink Switches 3 3 Interconnecting Repeaters 3 5 Connecting Power 3 6 Disconnecting Power 3 7 Replacing the Power Supply 3 7 Installing a Redundant Power Supply 3 8 Chapter 4 LED Status Chart...

Page 7: ...s follows Chapter 1 Provides an operational overview of the repeater and describes its components and features Chapter 2 Discusses special requirements for operating the repeater and provides charts t...

Page 8: ...the current operating status Features The repeater includes these features 24 shielded RJ 45 ports that support 100Base TX or 10Base T connections Automatic speed detection at each port to detect the...

Page 9: ...age contains the following items 1224 10Base T 100Base TX Repeater AC power cord Rack mounting kit two mounting brackets eight 3 8 inch bracket screws and four 1 2 inch rack mount screws Four adhesive...

Page 10: ...ter User Guide User Guide Power Cord 1 2 inch Rack Mount Screws 4 3 8 inch Bracket Screws 8 Rubber Feet 4 Limited Warranty MDI X MDI X 1 13 2 14 3 15 4 16 5 17 6 18 7 19 8 20 9 21 10 22 11 23 12 24 AL...

Page 11: ...7 19 8 20 9 21 10 22 11 23 12 24 ALTERNATING 100 COL 10 COL DISPLAY MODE 100 MBPS PWR A 10 MBPS PWR B MDI 10 ONLY 10 100 MDI MDI X MDI X Power Supply 10Base T 100Base T Collision Status Indicators 10B...

Page 12: ...n the LEDs for the RJ 45 ports with 100Base TX connections display their port statuses The other two LEDs 10MBPS and ALTERNATING show 10 Mb s status and Alternating status Figure 1 4 shows the LED arr...

Page 13: ...Switch The settings have the following meaning 10 100 setting default Lets the port automatically detect the incoming wire speed like the other ports The 10 ONLY Forces the port to function as a 10Ba...

Page 14: ...on the repeater to uplinkable OUT RJ 45 ports This lets you interconnect the repeater to another dual speed repeater or to a 10Base T or 100Base TX repeater IN ports use an internal crossover of the r...

Page 15: ...Button The DISPLAY MODE button lets you set the repeater to display port activity in any of three LED display modes 100 Mb s 10 Mb s or alternating between 100 Mb s and 10 Mb s To select a specific d...

Page 16: ...tic Speed Detection The repeater automatically detects the incoming wire speed of a transmission and adjusts the repeater s operation accordingly The repeater immediately adjusts to 100 Mb s wire spee...

Page 17: ...ne the environmental electrical spatial and cable requirements Environmental Requirements Be sure the operating environment for the repeater is within the following ranges Temperature 32 to 122 F 0 to...

Page 18: ...in a single rack or stack them on a single shelf or if you want to place the repeaters in different locations you can place them on separate shelves or in separate racks See Twisted Pair UTP Wire Req...

Page 19: ...meet the above specifications When installing wire it is a good idea to install extra pairs of wire for future expansion If you are unfamiliar with wiring installation or the applicable local electri...

Page 20: ...nnected to wires for 100 Mb s operation Table 2 1 Straight Through Twisted Pair Wiring Twisted Pair Number Pin Number Signal Description To Pin Number Signal Description 1 1 2 TD TD 1 2 TD TD 2 3 6 RD...

Page 21: ...Connects To 8 17 7 16 22 23 24 6 15 21 5 11 12 13 14 20 4 3 10 19 2 9 18 1 10 100 Mb s Repeater Setup and Cabling Chart Unit Number Building Location Rack Mount Table Port 1 Uplink Switch Setting Por...

Page 22: ...lation Rack Inventory Chart Use this chart to record the components installed in a particular rack Wiring Closet Number Rack Number Installer Date Example 10 100 Mb s Repeater 10 100 Mb s Repeater Fig...

Page 23: ...peater over so that its bottom side faces up 2 Remove the four rubber feet from their packaging 3 Peel the protective paper backing off the rubber feet Then position the feet in the recessed areas nea...

Page 24: ...o the other side of the repeater 9 21 10 22 11 23 12 24 ALTERNATING DISPLAY MODE 100 MBPS 10 MBPS MDI MDI X Bracket Screws Figure 3 1 Attaching the Mounting Brackets 3 After you attach both mounting b...

Page 25: ...e TX Workstation MDI X MDI X 1 13 2 14 3 15 4 16 5 17 6 18 7 19 8 20 9 21 10 22 11 23 12 24 100 COL PWR A PWR B MDI MDI X Figure 3 3 Connecting Twisted Pair Cable Setting the Uplink Switches The uplin...

Page 26: ...ports for 10 Mb s uplink connections MDI X MDI X 1 13 2 14 3 15 4 16 5 17 6 18 7 19 8 20 9 21 10 22 11 23 12 24 ALTERNATING 100 COL 10 COL DISPLAY MODE 100 MBPS PWR A 10 MBPS PWR B MDI 10 ONLY 10 100...

Page 27: ...nterconnect two repeaters providing up to 48 ports in the same collision domain segment You can also connect the repeater to a single speed repeater 10 Mb s or 100 Mb s To connect the repeater to anot...

Page 28: ...10 MBPS PWR B PWR B MDI MDI 10 ONLY 10 100 10 ONLY 10 100 MDI MDI MDI X MDI X MDI X MDI X MDI MDI X Figure 3 6 Interconnecting Repeaters Connecting Power Follow these steps to connect the repeater to...

Page 29: ...ct the power cord from the non switched grounded power outlet on the wall power strip or grounded extension cord Do not power down the repeater by disconnecting the power cord from the back of the rep...

Page 30: ...supply module while the main power supply module is powered on 1 Remove the two screws from the PWR B cover plate and remove the plate Be sure you keep the cover plate and screws in case you need the...

Page 31: ...ded power outlet on a wall a power strip or a grounded extension cord When you connect power the PWR B LED indicator lights green to indicate that the power supply module is installed and functioning...

Page 32: ...ow The repeater detects a 10 Mb s collision Off No collisions are occurring Steady green A link condition is present RJ 45 Steady yellow The port is disabled autopartitioned Flashing green There is ac...

Page 33: ...ion button until the LED for the desired mode lights After about 5 minutes of button inactivity the repeater returns to the alternating mode default The following LED display modes are available 10 Mb...

Page 34: ...rt 12 Automatic speed detection port with MDI MDI X option LED Indicators Power PWR A and PWR B 100 Mb s Collisions 100 COL and 10 Mb s Collisions 10 COL 10 Mb s Mode 10 Mb s 100 Mb s Mode 100 Mb s an...

Page 35: ...er Consumption Maximum 60 W Power cord USA 1 8 mm 6 feet 10 Amps Power Supply 90 W redundant power supply 5 VDC at 14 A 12 VDC at 2 A no minimum load required Physical Specifications Dimensions 2 75 x...

Page 36: ...T 100Base TX Repeater User Guide 15 to 95 humidity at 50 C non condensing 0 to 10 000 feet 0 to 3 km Storage Environment 32 to 151 F 0 to 66 C 15 to 95 humidity at 50 C non condensing 0 to 30 000 fee...

Page 37: ...02 3 referred to as Ethernet operates on different cable types e g UTP coax fiber Auto negotiation The algorithm that allows two devices at either end of a link segment to negotiate common features an...

Page 38: ...epeater sets may exist between any two DTEs within a single collision domain Collision A collision occurs when two or more nodes try to transmit simultaneously Large numbers of collisions may indicate...

Page 39: ...g collision detection and notification and signal broadcast to lower level repeaters and DTEs IEC International Electrotechnical Commission The IEC an organization comprised of committees from several...

Page 40: ...it of the packet exits another port LED Light Emitting Diode typically used to indicate the operating status of a repeater or module Link Pulse A communication mechanism used in 10Base T networks to i...

Page 41: ...int of connection to a repeater The node remains physically attached A node can be autopartitioned by the hardware when 30 consecutive frame errors occur The reception of one good frame re enables the...

Page 42: ...etween pairs In cables greater than 25 pairs the twisted pairs are grouped and bound together in a common cable sheath Twisted pair cable is the most common type of transmission media Uplink The conne...

Page 43: ...1 7 3 4 Crossover 1 7 D Default mode 4 2 Dimensions 2 2 Display mode button 1 8 E Electrical requirements 2 1 Environmental requirements 2 1 F Front panel 1 4 I IEEE specifications 1 7 IN ports 1 7 3...

Page 44: ...1 features 1 1 interconnecting 3 5 mounting 3 1 rack mounting 3 1 steps for mounting 3 2 Repeaters interconnecting 2 2 RJ 45 ports 1 7 3 3 S Status LEDs 1 5 T Twisted pair cable 3 3 U Uplink default s...

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