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23

1000BASE-T Cable Requirements

All Category 5 UTP cables that are used for 100BASE-TX connections should also work for 
1000BASE-T, providing that all four wire pairs are connected. However, it is recommended that 
for all critical connections, or any new cable installations, Category 5e (enhanced Category 5) 
cable should be used. The Category 5e specification includes test parameters that are only 
recommendations for Category 5. Therefore, the first step in preparing existing Category 5 cabling 
for running 1000BASE-T is a simple test of the cable installation to be sure that it complies with 
the IEEE 802.3ab standards. 

Cable Testing for Existing Category 5 Cable

Installed Category 5 cabling must pass tests for Attenuation, Near-End Crosstalk (NEXT), and 
Far-End Crosstalk (FEXT). This cable testing information is specified in the ANSI/TIA/
EIA-TSB-67 standard. Additionally, cables must also pass test parameters for Return Loss and 
Equal-Level Far-End Crosstalk (ELFEXT). These tests are specified in the ANSI/TIA/
EIA-TSB-95 Bulletin, “The Additional Transmission Performance Guidelines for 100 Ohm 4-Pair 
Category 5 Cabling.”

Note that when testing your cable installation, be sure to include all patch cables between switches 
and end devices.

Adjusting Existing Category 5 Cabling

If your existing Category 5 installation does not meet one of the test parameters for 1000BASE-T, 
there are basically three measures that can be applied to try to correct the problem:

1.

Replace any Category 5 patch cables with high-performance Category 5e cables.

2.

Reduce the number of connectors used in the link.

3.

Reconnect some of the connectors in the link.

Summary of Contents for Smart Switch eG8G

Page 1: ...eG8G 8 port 10 100 1000Base T Switch Quick Installation Guide ...

Page 2: ...ers 11 Configuring Port Trunks 12 Using a Mirror Port for Analysis 14 Configuring Virtual LANs 15 Priority Configuration 16 Displaying Port Statistics 17 Resetting the System 19 Logging Off the System 19 Product Specifications 20 Physical Characteristics 20 Switching Criteria 20 Traffic Control 20 System Management 20 Troubleshooting 21 Diagnosing Switch Indicators 21 Power and Cooling Problems 21...

Page 3: ... slots Each 1000 Mbps port can support high bandwidth connectivity within or between workgroups and increased capacity for server farms giving your users faster access to network wide resources To manage the switch you can make a direct connection to the console port on the switch s rear panel You can configure the switch s wide array of advanced features such as Full duplex flow control IEEE 802 ...

Page 4: ... serial port is provided on the rear panel for out of band console configuration The AC power socket is located on the rear panel The RJ 45 ports operate at 1000 Mbps 100 Mbps and 10 Mbps with support for auto negotiation of speed duplex mode and flow control When using auto negotiation the transmission mode and flow control can be automatically set if this feature is also supported by the attache...

Page 5: ... direct sunlight and away from heat sources or areas with a high amount of electromagnetic interference If you intend to mount the switch in a rack make sure you have all the necessary mounting screws brackets bolts and nuts and the right tools Check if network cables and connectors needed for installation are available Mounting Switches in a Rack Please comply with the following instructions to e...

Page 6: ...rt on the switch When inserting an RJ 45 plug be sure the tab on the plug clicks into position to ensure that it is properly seated Caution Do not plug a phone jack connector into any RJ 45 port This may damage the switch Instead use only twisted pair cables with RJ 45 connectors that conform with FCC standards Notes 1 For 1000 Mbps operation all four wire pairs in the cable must be connected 2 10...

Page 7: ...o the network Be sure not to exceed the maximum length for the type and rating of fiber cable you are using Refer to the tables on the preceding page LED State Indication System Power On Green Switch is receiving power Off Power off or failure Diag Off Blinking Green System self diagnostic test in progress On Green System self diagnostic test successfully completed On Amber System self diagnostic ...

Page 8: ...to forward traffic When traffic passes between devices attached to different ports on the switch the high speed switching fabric forwards the packets Switching Functions Store and forward switching is used to forward traffic to other ports This scheme ensures data integrity and provides a clean data stream Configuration Options This switch is designed to operate as a high bandwidth backbone switch...

Page 9: ...mirroring Configure the VLAN mode of the switch Configure port based priority Display system information or statistics Restart the system restoring factory defaults Changing the password Required Connections Attach a VT100 compatible terminal or a PC running a terminal emulation program to the serial port on the switch s rear panel Use the null modem cable provided with this package or use a null ...

Page 10: ...l configuration parameters and statistics You should define a new password record it and put it in a safe place Select System Configuration from the Main Menu and enter a new password for the administrator Note that passwords can consist of up to 15 alphanumeric characters and are not case sensitive You are allowed three attempts to enter the correct password on the third failed attempt the curren...

Page 11: ...low control Sets communication to auto negotiation or 10 100 1000 Mbps and full half duplex Note that if the speed is 1000 Mbps the communication mode is fixed at full duplex Port Trunking Configuration Specifies ports to group into aggregate trunks Port Mirroring Configuration Sets the source and target ports for mirroring Configures the aging time of the ports Config Vlan to Mode_1 2 Ports 1 24 ...

Page 12: ...d admin The password of the administrator Aging time 300 seconds Timeout period in seconds for aging out dynamically learned forwarding information Range 5 1145 seconds Logout time 0 minutes If no input is received from the attached device after this interval the current session is automatically closed Range 0 98 minutes where 0 indicates disabled Auto refresh time 12 seconds Sets the interval bef...

Page 13: ...sive collisions and then re enable it after the problem has been resolved You may also disable a port for security reasons Type Config Auto Nego Enables auto negotiation for speed and duplex mode or manually sets these parameters The manual settings available are 10HDX 10 Mbps half duplex 10FDX 10 Mbps full duplex 100TX HDX 100 Mbps half duplex 100TX FDX 100 Mbps full duplex 1GB FDX 1 Gbps full du...

Page 14: ...d if another port in the trunk fails However before making any physical connections between devices use the Port Trunking Configuration menu to specify the trunk on the devices at both ends When using a port trunk remember that Ports can only be assigned to one trunk The ports at both ends of a connection must be configured as trunk ports The ports at both ends of a trunk must be configured in an ...

Page 15: ...t remove the network cable and then disable both ends of the link via the configuration menu This allows the traffic passing across that link to be automatically distributed to the other links in the trunk without losing any significant amount of traffic Smart Switch Port Trunking Configuration List Current Link Aggregates Port Count Port Number Trunk1 2 port 1 to 2 Trunk2 2 port 3 to 4 Trunk3 4 p...

Page 16: ...or one or any ports to the port 8 as shown below The default is that port mirroring is disabled Smart Switch Mirror Port Configuration Monitored Port Port Type Active 1 Rx Packets Enabled Note The speed of monitored port must have the same speed as eighth port Return Use arrow keys to move Enter to make changes Parameter Description Port The transmitted or received traffic on this port will be mir...

Page 17: ...AN Table 1to8 Port Member Set Untag Set VLAN 12345678 12345678 1 PPPPPPPP UUUUUUUU S Static P PVID U Untag Return Config Delete Use arrow keys to move Space to make change Parameter Description VLAN The ID for the VLAN currently displayed Range 1 32 Member Set P or S indicates that the port belongs to this VLAN P also indicates that the PVID of the port is set to that of this VLAN Untag Set If a p...

Page 18: ... port Up to eight separate traffic classes are defined in IEEE 802 1p Smart Switch Port Priority Configuration Default tags Priority mapping for each tag Port 1 2 3 4 5 6 7 8 Tag 0 1 2 3 4 5 6 7 Tag 0 0 0 0 0 0 0 0 queue 1 0 0 1 2 2 3 3 Note Flow control has to be enabled before setting priority Return Use arrow keys to move Space to make change Parameter Description Default tags Sets the default ...

Page 19: ...gher layer protocol In Non Unicast Pkts The number of non unicast i e subnetwork broadcast or subnetwork multicast packets delivered to a higher layer protocol In Discards The number of inbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher layer protocol One possible reason for discarding such a packet could be to f...

Page 20: ...to excessive collisions Drop Events The total number of events in which packets were dropped due to lack of resources Octets Number of octets passing through this port Multiple Collisions A count of successfully transmitted frames for which transmission is inhibited by more than one collision Late Collisions The number of times that a collision is detected later than 512 bit times into the transmi...

Page 21: ...Logging Off the System Use the Exit command under the Main Menu to exit the configuration program and terminate communication with the switch for the current session Smart Switch System Restart Factory default Restart Return Use arrow keys to move Enter to confirm Parameter Description Factory default Reloads the factory defaults Restart Restarts with the current settings ...

Page 22: ... Dissipation 239 BTU hr max 100 240 VAC Temperature Operating 0 50 C 32 122 F Storage 40 70 C 40 158 F Humidity 5 to 95 noncondensing Certification CE Mark Emissions FCC Class A CISPR Class A Immunity EN 61000 4 2 3 4 5 6 8 11 Switching Criteria Network Bridging Function Filtering forwarding and learning Switching Method Store and forward Address Table 16K entries total Queue Buffer 1 5M bytes Add...

Page 23: ...ve been properly installed If one or more components appear to be malfunctioning e g the power cord or network cabling test them in an alternate environment where you are sure that all the other components are functioning properly Symptom Cause Solution Link indicator does not light up after making a connection Network interface e g a network adapter card on the attached device network cable or sw...

Page 24: ... of the cable Use 100 ohm Category 5 or 5e unshielded twisted pair UTP or shielded twisted pair STP cable for 1000BASE T connections Also be sure that the length of any twisted pair connection does not exceed 100 meters 328 feet The table below shows the 1000BASE T MDI and MDI X port pinouts These ports require that all four pairs of wires be connected Note that for 1000BASE T operation all four p...

Page 25: ...ttenuation Near End Crosstalk NEXT and Far End Crosstalk FEXT This cable testing information is specified in the ANSI TIA EIA TSB 67 standard Additionally cables must also pass test parameters for Return Loss and Equal Level Far End Crosstalk ELFEXT These tests are specified in the ANSI TIA EIA TSB 95 Bulletin The Additional Transmission Performance Guidelines for 100 Ohm 4 Pair Category 5 Cabling...

Page 26: ...ings 1 Wear an anti static wrist strap or take other suitable measures to prevent electrostatic discharge when handling this equipment 2 When connecting this hub to a power outlet connect the field ground lead on the tri pole power plug to a valid earth ground line to prevent electrical hazards CE Mark Declaration of Conformance This information technology equipment complies with the requirements ...

Page 27: ...e 1 kV AC DC Line to Earth 2 kV Immunity to conducted disturbances Induced by radio frequency fields EN 61000 4 6 1996 0 15 80 MHz with 1 kHz AM 80 Modulation 3 V m Power frequency magnetic field immunity test according to EN 61000 4 8 1993 1 A m at frequency 50 Hz Voltage dips short interruptions and voltage variations immunity test according to EN 61000 4 11 1994 95 Reduction 10 ms 30 Reduction ...

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Page 29: ...150000010900B R02 eG8G ...

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