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Magnum DS880 Dual-Speed Stackable Hubs                  Installation and User Guide (05/01)  

 

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3.0 

Magnum DS880 Installation 

 

Before installing the equipment, it is necessary to take the 

following precautions: 

1.) 

If the equipment is mounted in an enclosed or multiple rack 

assembly, the environmental temperature around the equipment must be 
less than or equal to 50

0

C. 

2.) 

If the equipment is mounted in an enclosed or multiple rack 

assembly, adequate air flow must be maintained for proper and safe 
operation. 

3.) 

If the equipment is mounted in an enclosed or multiple rack 

system placement of the equipment must not overload or load unevenly 
the rack system. 

4.) 

If the equipment is mounted in an enclosed or multiple rack 

assembly, verify the equipment’s power requirements to prevent 
overloading of the building/s electrical circuits. 

5.)  

If the equipment is mounted in an enclosed or multiple rack 

assembly verify that the equipment has a reliable and uncompromised 
earthing path.

 

6.)  

If  the intra-building wiring (cabling) is involved with this 

product(NEBS), then it is recommended to have shielded cable and the 
shield is grounded at both ends.

 

 

 

This chapter provides instructions for installing the Magnum DS880 hubs

 

3.1 

Locating Magnum DS880 Dual-Speed Hubs 

 

The location of a Magnum DS880 Dual-Speed Hub is dependent on the physical 

layout of the network.  Typically the hub is placed where combinations of 10Mb and 100Mb 

network devices need to be connected to communicate with each other.  The compact size of the 

unit allows it to be conveniently placed in an office or lab area, and it can also be either shelf of 

wall-mounted (see instructions in 3.1.2 below).  Wall-mounting brackets are included, usable for 

single units (but not for stacks).  The width of two DS880 units will fit in a 19” rack when they 

are side-by-side.  

 

Locate an AC receptacle that is within six feet (2 meters) of the intended Magnum 

DS880 site.  The rugged metal case of the Magnum DS880 will normally protect it from 

accidental damage in a lab or workplace setting.  Maintain an open view of the front to visually 

monitor the status LEDs.  Keep an open area around the unit so that cooling can occur from the 

small fan in the bottom-rear while the unit is in operation. 

 

3.1.1 

Table-Top or Shelf Mounting 

 

The Magnum DS880 Dual-Speed Hub can be easily mounted on a table-top or any 

suitable horizontal surface, and has four rubber feet to provide stability without scratching 

finished surfaces.  When stacked, the rubber feet also provide separation between units for the 

exhaust of the rear cooling fan. 

 

 

Содержание Magnum DS 880

Страница 1: ...www GarrettCom com Magnum DS 880 10 100 Dual Speed Stackable Hubs I n s t a l a Installation and User Guide 5 00 USD...

Страница 2: ...re trademarks and Personal Hub is a registered trademark of GarrettCom Inc Important The Magnum DS880 10 100 Dual Speed Stackable Hubs family contains no user serviceable parts Attempted service by un...

Страница 3: ...n radiate frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may cause interference to radio communication It has been tested and...

Страница 4: ...ber ports can be connected in strings Mixed Media Fiber Hub 16 port Stackable 10 100 auto sensing Dual Speed 8 port and 16 port Stackables 10 100 auto sensing Stackable Hubs SNMP Optional 10Mb series...

Страница 5: ...t Auto Negotiation 17 3 3 Powering the Magnum DS880 18 4 0 OPERATION 18 4 1 Dual Speed Functionality 18 4 1 1 Software Transparency 20 4 2 Port Speed settings for 10 100 and 10 100Mbps Mode only 20 4...

Страница 6: ...g for speed IEEE 802 3u Packet Processing Between Domains internal 10 100 switch or bridge Filtering and Forwarding Rate from 100Mb ports 148 800 pps max Filtering and Forwarding Rate from 10Mb ports...

Страница 7: ...ub The up link port 8 is auto sensing for speed and the up link works the same at 10Mb or 100Mb Packaging Enclosure High strength metal Metal mounting brackets included Suitable for wiring closet shel...

Страница 8: ...ing cable internal auto ranging power supply cooling fan and metal brackets for shelf or wall mounting Magnum DS880 B Same as Magnum DS880 A but includes an internal switch module that bridges the two...

Страница 9: ...ower Cord U S and other 115 vac locations only 1 Stacking Cable Model DS880 A add on no bridge inside units only 1 Set of metal clips and screws for wall mounting 1 Installation and User Guide 1 Produ...

Страница 10: ...CT PWR LK RX BR UPLINK 1 2 3 4 5 6 7 8 GARRETT PWR 1 2 3 4 5 6 7 8 Magnum 8000E Stackable Hub 9 10 11 12 Figure 2 2 1 Magnum DS880 is functionally both a 10Mb and a 100Mb hub in one As Magnum DS880 Du...

Страница 11: ...K RX BR 100 UPLINK 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 COL ACT 100 10 PWR LK RX BR 100 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 COL ACT 100 10 PWR LK RX BR 100 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 COL 100 10 RX ACT PWR...

Страница 12: ...g information The AC power cord connector a universal recessed male IEC type is in the left rear of the chassis The internal power supply is auto ranging for any AC power input of 115 230 vac 50 60 Hz...

Страница 13: ...eir internal bridges would not be able to function properly when more than one is present Note that two DS880 B units may be cascaded to operate together however Use DS880 B models un stacked or with...

Страница 14: ...learning so that filtering forwarding of 10Mb and of 100Mb packets is maintained correctly even when users move their connection or change speed or power down The DS880 B s bridge module is implement...

Страница 15: ...rformance switching provides full bandwidth in each domain unaffected by local traffic on the other domain One DS880 B per stack supports switching for all ports Stackable for flexible expansion Magnu...

Страница 16: ...evices Example 2 Where there are existing 10Mb hubs and users they can easily be cascaded into any port of the DS880 B This allows simple plug and play addition of 100Mb ports to an existing 10Mb netw...

Страница 17: ...ordingly Separately the 100Mb traffic domain obeys all of the rules of 100Mb Fast Ethernet shared networks hop counts PDVs cable types cable distances etc and can be treated as one 100Mb repeater Both...

Страница 18: ...stalling the Magnum DS880 hubs 3 1 Locating Magnum DS880 Dual Speed Hubs The location of a Magnum DS880 Dual Speed Hub is dependent on the physical layout of the network Typically the hub is placed wh...

Страница 19: ...cabling is 100 meters 328 ft Media IEEE Standard Connector Twisted Pair CAT 3 10BASE T RJ 45 Twisted Pair CAT 5 100BASE TX RJ 45 NOTE It is recommended that high quality CAT 5 cables which work for bo...

Страница 20: ...E Std 802 3u 1995 actual delays may be less for a particular cable Contact your cable supplier for exact cable specifications Each Fast Ethernet device component also has an associated BT delay which...

Страница 21: ...2 X 486 BT X 512 486 BT X 28 BT Twisted Pair cable length TL 28 BT 1 112 m BT TL 25 meters 25 m maximum total length for Category 5 inter repeater segment 1 2 3 4 5 6 7 8 COL ACT PWR LK RX BR UPLINK 1...

Страница 22: ...ue to the relatively shorter bit time 80 BT actually measured for front port to port delay of the 100Mbps domain of the Magnum DS880 vs the industry standard delay of 92 BT for Class II repeaters The...

Страница 23: ...rivers on the user device if the NIC has been communicating with a protocol other than 100BASE TX such as 10BASE T When 100Mb operation is agreed and in use the 100Mb LINK ACT LED is illuminated stead...

Страница 24: ...ade based on the destination address contained in each packet If the destination address is on the same domain from which the packet originated then it is filtered and not forwarded to the other domai...

Страница 25: ...and when a new node address will be added to the internal Address Table When a new node address packet comes into a port for the first time then the new source address is learned at the same time tha...

Страница 26: ...10 100Mbps or 10 100Mbps auto sense The unit has been set at 10 100Mbps at the time of shipping The Switch SW3 represents port 1 to 4 and the switch SW2 port 5 to 8 as shown in the Fig 4 2 above The s...

Страница 27: ...LED ON when a bridge module is present in the unit model DS880 B OFF when no bridge module is present model DS880 A COL Two collision LED s one for each traffic domain 10 and 100Mb Blinks intermitten...

Страница 28: ...ection of the applicable chapter of this manual Also check to make sure that the various components of the network are interoperable 2 Check the cables and connectors to ensure that they have been pro...

Страница 29: ...ng personal computers workstations terminals and printers plus the various network media types being used 4 A record of changes that have been made to your network configuration prior to the occurrenc...

Страница 30: ...it in Styrofoam popcorn type packing material This material may cause electro static shock damage to the unit 2 Clearly mark the Return Material Authorization RMA number on the outside of the shipping...

Страница 31: ...power supply internally nor will it blow the fuse in the internal power supply A A GND GND CHASSIS FUSE SUPPLY HUB POWER SWITCH The power switch included on premium priced NEBS certified units only i...

Страница 32: ...the 48V or 48V power supply should be connected to the post leveled and then the rest Ensure that each lead is securely tightened 36 70VDC _ GND ON OFF On the premium priced NEBS compliant Magnum DS88...

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