DES-1218 / DES1226 10/100/1000 Mbps Switch with optional Gigabit module User’s Guide First Edition (June, 2000) 651ES1218015 Printed In Taiwan RECYCLABLE
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Table of Contents 0 ABOUT THIS GUIDE .................................................................................................................................IX CONVENTIONS ..................................................................................................................................................... IX OVERVIEW OF THIS USER’S GUIDE ...................................................................................................................... IX 1 INTRODUCTION ........
Port-based VLANs.......................................................................................................................................... 22 VLAN Segmentation.....................................................................................................................................................22 VLAN and Trunk Groups..............................................................................................................................................
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide 0 A BOUT T HIS G UIDE This User’s Guide provides instruction for installing the Switch, making the proper connections to an Ethernet network, and setting the configurations using the built-in console interface.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide 1 1 I NTRODUCTION This section describes the features of the Switch, as well as giving some background information about Fast Ethernet, Gigabit Ethernet, and switching technology. Fast Ethernet Technology The growing importance of LANs and the increasing complexity of desktop computing applications are fueling the need for high performance networks.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide Switching Technology Another key development pushing the limits of Ethernet technology is in the field of switching technology. A switch bridges Ethernet packets at the MAC address level of the Ethernet protocol transmitting among connected Ethernet or fast Ethernet LAN segments. Switching is a cost-effective way of increasing the total network capacity available to users on a local area network.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide The modules that can be installed include: the DES-122G 2 port 1000BASE-SX (SC type connector), DES-122GL 2 port 1000BASE-LX, DES-122GB 2 port GBIC, DES-122T 2 port 1000BASE-T, and DES-122GM 2 port 1000BASE-SX (MT-RJ type connector) modules. This stand-alone Switch enables the network to use some of the most demanding multimedia and imaging applications concurrently with other user applications without creating bottlenecks.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide ♦ RS-232 DCE console port for Switch management Ports ♦ 16 or 24 High-performance ports for connecting to end stations, servers and hubs (MDI-X 10/100 Ethernet UTP ports and 1 MDI-X/MDI-II Uplink port). ♦ All UTP ports can auto-negotiate between 10Mbps/100Mbps, half-duplex, or full duplex and flow control.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide ♦ ♦ ♦ ♦ Support Auto-negotiation for flow-control IEEE 802.3x compliant Flow Control support for full-duplex Back pressure flow control support for half-duplex mode Per port packet buffer: 2Mbytes 1000BASE-SX (MT-RJ) Module (DES-122GM )* ♦ 1000BASE-SX (with MT-RJ type connector) Gigabit Ethernet ports ♦ ♦ ♦ ♦ Fully compliant with IEEE802.3z Support Full-duplex operation only IEEE 802.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide 2 2 U NPACKING AND S ETUP This chapter provides unpacking and setup information for the Switch Fast Ethernet/Gigabit Switch. Unpacking Open the shipping carton of the switch and carefully unpack its contents.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide Desktop or Shelf Installation When installing the switch on a desktop or shelf, the rubber feet included with the switch should first be attached. Attach these cushioning feet on the bottom at each corner of the device. Allow enough ventilation space between the switch and any other objects in the vicinity. Figure 2-1 DES-1226 Switch installed on a Desktop or Shelf Rack Installation The Switch can be mounted in a standard 19” rack.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide Mounting the Switch in a standard 19” rack. Figure 2-3 DES-1226 Switch in Rack Power on Plug one end of the AC power cord into the power connector of the switch and the other end into the local power source outlet. After the Switch is powered on, the LED indicators will momentarily blink. This blinking of the LED indicators represents a reset of the system. Power Failure As a precaution, in the event of a power failure, unplug the switch.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide 3 3 I DENTIFYING E XTERNAL C OMPONENTS This chapter describes the front panel, rear panel, optional plug-in modules, and LED indicators of the Switch. Front Panel The front panel of the Switch consists of LED indicators for power and for each port, an RS-232 communication port, 16 (DES-1218) or 24 (DES-1226) 10/100 Mbps twisted-pair ports and a slot for installing an optional 2 port Gigabit Ethernet module. DES-1218 Figure 3-1.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide DES-1226 Figure 3-2. Front panel view of the DES-1226 ♦ An RS-232 DCE console port for setting up and managing the switch via a connection to a console terminal or PC using a terminal emulation program. ♦ 16 or 24 high-performance, NWay Ethernet ports all of which operate at 10/100 Mbps for connections to end stations, servers and hubs. All ports can autonegotiate between 10Mbps or 100Mbps, full or half duplex, and flow control.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide Side Panels The right side panel of the Switch contains two system fans. The left side panel contains heat vents. The system fans are used to dissipate heat. The sides of the system also provide heat vents to serve the same purpose. Do not block these openings, and leave at least 6 inches of space at the rear and sides of the switch for proper ventilation.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide 4 4 C ONNECTING T HE S WITCH This chapter describes how to connect the DES-1218/1226 to your Fast Ethernet network. Switch to End Node End nodes include PCs outfitted with a 10, 100 or 10/100 Mbps RJ-45 Ethernet/Fast Ethernet Network Interface Card (NIC) and most routers. The RJ-45 UTP ports on NICs and most routers are MDI-II. When using a normal straight-through cable, an MDI-II port must connect to an MDI-X port.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide Switch to Hub or Switch These connections can be accomplished in a number of ways. The most important consideration is that when using a normal, straight-through cable, the connection should be made between a normal crossed port (Port 1x, 2x, 3x, etc.) and an uplink (port 1x in MDI-II mode) port. If you are using a crossover cable, the connection must be made from uplink to uplink, or from a crossed port to another crossed port.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide Connecting to Network Backbone or Server The slide-in module Gigabit Ethernet ports are ideal for uplinking to a network backbone or network server. These ports operate at 1000 Mbps in full-duplex mode. Connection to the Gigabit Ethernet ports are made using fiber optic cable or Cat-5 copper cable, depending on the type of port. A valid connection is indicated when the Link LED is lit. DES-1218 with 2 Port 1000BASE-SX Slide-in Module.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide 5 5 S WITCH MANAGEMENT This chapter discusses the features used to manage the Switch, and explains important points regarding these features. Configuring the Switch is discussed in detail. Local Console Management Local console management involves the administration of the Switch via a direct connection to the RS-232 DCE console port.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide Figure 5-1. Management Console Screen Once you have connected to the console port on the switch, you should see a window like that pictured in Figure 5-1. If the screen appears but is blank, press “Control” and “R” (Ctrl+R) simultaneously to refresh the screen. Use this screen to perform all the available management functions.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide Software Features The device provides the ability to configure the port speed, flow control, link aggregation, port monitor, 802.1p priority queues, and VLAN group. Port Speed - 10/100 Mbps UTP You can select the desired Speed and Duplex for each port. Possible settings include: Auto, 10F, 10H, 100F, and 100H where the number 10 or 100 is the speed in Mbps, and the H or F designates half-duplex or full-duplex.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide Priority Queues This feature allows you to customize packet traffic handling to the particular needs of your network. Configure this setting for packets passing through the port, using IEEE 802.1p priority tagging. These settings are universal, that is, they are for all ports on the Switch. Four priority levels may be assigned with Queue 3 being the highest priority queue, and Queue 0 being the lowest priority queue.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide VLAN Group Up to 9 port-based virtual LAN (VLAN) groups can be designated for the switch. Individual ports can exist in two or more VLANs simultaneously, so VLAN groups can overlap or intersect. For a more detailed discussion of VLANs, see Chapter 6. Using the space bar, select each port that you would like to be included in the assigned VLAN. A “v” under the port number indicates the port is in the designated VLAN group.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide 6 6 MANAGEMENT C ONCEPTS This chapter discusses some of the important management concepts used to manage the Switch. The functions dealt with in this chapter include Port Trunk Groups, VLAN network segmentation, and IEEE 802.1p Priority Queues. Port Trunk Groups Port trunk groups are used to combine a number of ports together to make a single highbandwidth data pipeline.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide IEEE 802.1p Priority Priority Tagging is a function defined by the IEEE 802.1p standard designed to provide a means of managing traffic on a network where many different types of data may be transmitted simultaneously. It is intended to alleviate problems associated with the delivery of time critical data over congested networks.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide Another benefit of VLANs is that you can change the network topology without physically moving stations or changing cable connections. Stations can be ‘moved’ simply by changing VLAN settings from one VLAN (the sales VLAN, for example) to another VLAN (the marketing VLAN). This allows VLANs to accommodate network moves, changes and additions with the utmost flexibility. VLANs can also provide a level of security to your network.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide A 7 T ECHNICAL S PECIFICATIONS General Standards: IEEE 802.3 10BASE-T Ethernet IEEE 802.3u 100BASE-TX Fast Ethernet IEEE802.3z 1000BASE-SX/1000BASE-LX IEEE802.3ab 1000BASE-T IEEE 802.3x Flow Control IEEE 802.1p Priority Queue ANSI/IEEE Std 802.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide General Number of Ports: DES-1218: 16 x10/100 Mbps MDI-X ports (including port 1x shared MDI-II) DES-1226: 24 x10/100 Mbps MDI-X ports (including port 1x shared MDI-II) 2 x 1000 Mbps Media Interface Exchange: MDI-II RJ-45 shared with port 1x Physical and Environmental Power Consumption: 100 - 240 VAC, 50 - 60 Hz , 1.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide B 8 C ABLES AND C ONNECTORS When connecting the Switch to another switch, a bridge or hub, a crossover cable is necessary. Please review these products for matching cable pin assignment. The following diagrams and tables show the standard RJ-45 receptacle/connector and their pin assignments.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide Straight cable for use with MDI-II to MDI-X connections With a crossover cable, two pairs of wires are switched at one connector end. Carry out the following steps to create a customized, crossover twisted-pair cable: 1. Leave one end of the cable as is, with the RJ-45 connector intact. The wiring at just one end of the cable needs to be modified. 2. At the other end of the cable, connect wires 1 and 2 to contacts 3 and 6, respectively.
DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide C 9 C ABLE L ENGTHS Use the following table to as a guide for the maximum cable lengths. Standard 1000BASE-SX 1000BASE-LX 1000BASE-T 100BASE-TX 10BASE-T Media Type 50/125µm Multimode Fiber 50/125µm Multimode Fiber 62.5/125µm Multimode Fiber 62.5/125µm Multimode Fiber 50/125µm Multimode Fiber 50/125µm Multimode Fiber 62.
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