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DES-1200M
Fast Ethernet Switch System
User’s Guide
Rev. 03 (MAR. 2001)
6012-9830016
Printed In Taiwan
RECYCLABLE
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TABLE OF CONTENTS TABLE OF CONTENTS..................................II CHAPTER 1 INTRODUCTION .................. 1 UNPACKING ........................................................... 3 DEVICE DESCRIPTION, FEATURES AND CAPABILITIES ................................................. 4 DES-1200M FRONT AND REAR PANELS...................... 4 DES-128 8 PORTS 10/100BASE-TX MODULE............... 6 DES-121T GIGABIT 1000BASE-T SWITCH MODULE ..... 8 FD THE LED INDICATOR IS YELLOW WHEN THE P
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COLLAPSED BACKBONE LINK..................................17 FILESERVER LINK..................................................19 MULTI-PORT BRIDGE WITH HIGH-BANDWIDTH BACKBONE ..........................................................20 CHAPTER 3 INSTALLATION..................22 CHOOSING A LOCATION.........................................22 SUPPLYING POWER................................................24 CONNECTING THE SWITCH ......................................24 CHAPTER 4. MODULE
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CHAPTER 1 INTRODUCTION DES-1200M are multi-speed network devices combining Ethernet, Fast Ethernet and Gigabit Ethernet capabilities in a single compact, rack-mountable cabinet. Combining 10Mbps Ethernet, 100Mbps Fast Ethernet and Gigabit Ethernet interfaces in one unit allows these switches to unclog existing LANs and provide a path to efficient, high-speed networking. DES-1200M is a combination of a 4-slot host cabinet which accepts more than 15 different media modules. A maximum c
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Unpacking Open the shipping cartons of DES-1200M and carefully unpacks its contents. The carton should contain the following items: Figure 1-1. Package Contents DES-1200M 4-Slot Fast Ethernet System AC power cord Rack mounting kit Four Rubber feet This User’s Guide If any item is found missing or damaged, please contact your local reseller for replacement. 3
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DEVICE DESCRIPTION, FEATURES AND CAPABILITIES DES-1200M Front and Rear Panels This section describes the features on the front and rear panels of the DES-1200M unit. Figure 1-2. Front Panel Figure 1-3. Rear Panel All LED status indicators are located on the FRONT panel of the switches. They provide a real-time indication of system and operational status. The ports for connections to other devices and networks are also on the front panels, along with the crossover switches. The
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LED Indicators Explanation The red power indicator is illuminated when power is Power provided to the switch and the switch is turned in the ON position. Green Link/Activity indicators are illuminated when the switch detects a connection to that port. The indicator Link/Activity blinks when data is transmitted over the network connected to that port. When a port is not connected, the indicator is off. Red Full Duplex/Col indicators are illuminated when that port is in full dupl
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DES-128 8 ports 10/100Base-TX Module Figure 1-4. 8 port 10/100Base-TX Module When installed into a DES-1200M, the DES-128 provides 8x 10/100Mbps Switch ports which can connect the DES-1200M to a 10Mbps or 100Mbps hub or end station. DES-128 8 Ports 10/100Base-TX Module Features 8x 10/100Base-TX N-Way Switch ports. Conforms to IEEE 802.3 10Base-T and IEEE 802.3u 100Base-TX and IEEE 802.3x Ethernet Standards Store and forward switch architecture for abnormal packet filtering
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switch for 1 to 4 port to adjust link mode with other network devices. Another 4 ports use auto-negotiation protocol only. There are three type of link mode can be chosen, Auto- negotiation, 100Mbps/Full duplex and 10Mbps/Full duplex. Port 1 ON Port 2 adjustable Port 1 Port 3 ports DIP Switch for Port 3 Port 1 to Port 4 Port 4 1 2 3 4 5 6 7 8 Port 5 Port 2 Port 4 Port 6 OFF Port 7 Full Duplex 10M Port 8 Auto- 1 2 100M negotiation Figure 1-5. Dip switch location and mode settings If you
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DES-121T Gigabit 1000Base-T Switch Module Figure 3. Gigabit 1000Base-T Switch Module Front View DES-121T Gigabit 1000Base-T Switch Module Features Compliant Gigabit Media Independent Interface (GMII ) 1 X 100/1000Mbps N-Way auto-negotiation switch port Automatic MDI crossover function Up to 2.4Gbps Backplane forwarding rate 3MB memory buffer sharing 4K-entry Mac Address Table Store-and-forward technology for abnormal packet filtering Half-duplex and full-
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ACT This LED indicator blinks green when the port is transmitting or receiving packets. When the device is not attached, the LED indicator is not lit. LK100 The LED indicator is green when the Port is linking with 100Mbps mode. When the port is operating in 10Mbps mode or not connected, the LED indicator is not lit. FD The LED indicator is yellow when the port is operating in Full-duplex mode. When the port is operating in Half- duplex mode, the LED indicator is not lit.
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ON Half Duplex 1 2 3 4 Full Duplex OFF DES-124F 4 Ports 100Base-FX Fiber Module Figure 1-8. 4 port 100Base-TX/FX Front View When installed into a DES-1200M , the DES-124F Module provides 4 x 100Mbps Fast Ethernet fiber ports which can be used to: Connect the DES-1200M to the backbone of your network; that is, to a basement switch, hub or router. Connector the DES-1200M to a 100Mbps server or end station. An ST (or SC) connector provides the link to the multi-mode fiber cabling a
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The following Table1-3. lists the ports operating modes based on the DIP switch position. PORT 1 PORT 2 PORT3 PORT4 SW 1 2 3 4 ON Half-Duplex Half-Duplex Half-Duplex Half-Duplex OFF Full-Duplex Full-Duplex Full-Duplex Full-Duplex Table 1-3. 4 ports 100Base-FX Fiber Module DIP switch functions DES-124F 4 ports 100Base-FX Fiber Module Feature Conforms to IEEE 802.3u Fast Ethernet standard Support SC or ST fiber connector (optional) Support half and full duplex via DIP switches
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DES-121G/GL 1000Base-SX/LX Fiber Module Figure 1-10. 1000Base-SX/LX Front View When installed into a DES-1200M, the DES-121G/GL 1000Base-SX/LX Module provides 1 Gigabit Ethernet ports which can connect the DES-1200M to a Gigabit Backbone Switch or Server with Gigabit NIC. DES-121G/GL 1000Base-SX/LX Fiber Module Features Conforms to IEEE 802.3z draft 4.2 and 802.3x standard 1x1000Base-SX/LX Ethernet Port 3M memory buffer support Standard auto-negotiation for speed, duplex mode
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CHAPTER 2 PLANNING YOUR NETWORK Before you install your DES-1200M, you should review the guidelines for setting up Ethernet networks. Further, you should plan your network to take maximum advantage of its switching capabilities. 10Base-T Ethernet Network Guidelines The maximum length of a 10Base-T cable segment is 100 meters (328 feet). The maximum number of nodes on a 10Base-T segment is one (1) for regular 10Base-T. The recommended cable type is EIA/TIA Category 3 or higher.
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The maximum network diameter is 200 meters (656 feet) when using Class I hubs and 205 meters (672.5 feet) when using Class II hubs. 100Base-FX Fast Ethernet Network Guidelines In Multi-mode, the fiber optic segment cannot exceed 2 km (62.5/125 µm), 2 km (50/125 µm) in length. In Single-mode, the fiber optic segment cannot exceed 60km (9/125 µm) in length. 1000BASE-SX and LX Network Guideline 1000BASE-SX In Multi-mode, the fiber optic segment cannot exceed 220m (62.5/125
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Network Planning Using a switch, such as a 4-Slot Modular Switch, can expand network topologies and enhance network performance. Each port on a switch connects to a separate network with its own collision domain. Separating networks with these switches allows you to expand 10Base-T networks past the four-hub limit and expand 100Base-TX networks past the one or two hub limit. These switches also filter incoming traffic. On standard hubs and repeaters, any data received on a port is forw
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network with four hubs to your 4-Slot Modular Switch. Then you can connect another 10Base-T network with four hubs to your 4-Slot Modular Switch. You will then have one network with two collision domains, allowing four hubs on each port. Figure 2-1. Expanding your 10Base-T Network 100Base-TX Networks The hub limit of a 100Base-TX network depends on the class of the hub in the network. With a Class I hub, the network is limited to one hub. With a Class II hub, the network is limit
