PLANET Web Switch Family

Web / SNMP MANAGEABLE

SGSW-2403

24-Port 10/100/1000Mbps stackable switch

Installing the Switch

Before installing the switch verify that you have all the items listed under "Package Contents." Also be sure ou have all the necessary tools and cabling before installing the switch. Note that this switch can be installed on any suitably large flat surface or in a standard EIA 19-inch rack. After installing the switch, refer to the Management Guide to set up its more advanced features, such as Spanning Tree Protocol or VLAN port groups.

2.1 Package Contents

This package includes:

• SGSW-2403
• Four rubber foot pads
• This Quick Installation Guide
• Rack mount bracket kit
• Owner registration card
• AC power cord

 2.2 Description of Hardware

The base unit contains 12/24 10BASE-T/100BASE-TX ports, plus three slots on the rear panel for various modules. An agent module must be installed in the upper slot on the rear panel (see page 3). The lower-left slot can be used for an optional media expansion module or stacking module, while the lower-right slot can be used for a media expansion module. Note that the media expansion modules include a Fast Ethernet fiber optic module with two 100BASE-FX (SC type) ports or a Gigabit uplink module with one 1000BASE-SX (SC type) port.

All RJ-45 ports operate at 10 or 100 Mbps, and support auto-negotiation of speed, duplex mode (i.e., half or full duplex), and flow control. While the Gigabit module operates at 1Gbps, and supports auto-negotiation of duplex mode and flow control. Note that when using auto-negotiation, speed, transmission mode, or flow control can be automatically set if this feature is also supported by the attached device. Otherwise, these items can be manually configured for any connection. Also, please note that the 100BASE-FX module is fixed at 100Mbps, full duplex.

The base unit also includes a display panel for key system and port indications that simplify installation and network troubleshooting.

The following figure shows the components of this switch system:

 2.3 Mounting the Switch

This switch can be placed directly on your desktop, or mounted in a rack. Before you start installing the switch, make sure you can provide the right operating environment, including power requirements, sufficient physical space, and proximity to other network devices that are to be connected. Verify the following installation requirements:

• Power requirements: 100 to 240 V AC (+/-10%) at 50 to 60 Hz (+/-3Hz). The switch's power supply automatically adjusts to the input voltage level.
• The switch should be located in a cool dry place, with at least 10 cm. (4 in.) of space on the sides for ventilation.
• Place the switch out of 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. Stacking Switches on a Flat Surface The Switch can be stacked anywhere there is enough flat space, such as on a table  or desktop.

2.3.1 Stacking Switches on a Flat Surface

1. Stick the self-adhesive rubber foot pads (that come with this package) on each of the 4 concave spaces located on the bottom of the first switch.
2. Place the first switch on a firm flat surface where you want to install the stack.
3. Repeat step 1 for each switch before stacking them. The rubber foot pads cushion the switch against shock/vibrations and provide space between each switch for ventilation.

2.3.2 Mounting Switches in a Rack

Please comply with the following instructions to ensure that your switch is securely mounted in the rack.

1. Use a standard EIA 19-inch rack.
2. Use the brackets and screws supplied in the rack mounting kit.
3. Use a cross-head screwdriver to attach the brackets to the side of the switch.
4. Position the switch in the rack by lining up the holes in the brackets with the appropriate holes on the rack, and then use the supplied screws to mount the switch in the rack.

2.4 Installing a Module

The slots on the rear panel of the switch are provided for various modules - the required management module, or the optional media expansion (fiber optic or Gigabit) or stacking modules. One management module is required to manage all of the switches in the stack. (Only one management module may be installed in the stack for the current firmware release.) The fiber optic module can be used to connect to remote sites. And the Gigabit module can be used as a network backbone. You must install the management module in the upper slot, the media expansion modules in either of the lower slots, and the stacking module in the lower left slot. You can install a module as described below:

1. Disconnect power to the switch (modules are not hot-swappable).
2. Remove the face plate on the appropriate slot by removing the two screws with a flat-head screwdriver.
3. Before opening the package that contains the module, touch the bag to the switch casing to discharge any potential static electricity.
4. Remove the module from the anti-static shielded bag.
5. Holding the module level, gently push it all the way into the slot along the guide rails, ensuring that it firmly engages with the connector.
6. If you are sure the module is properly mated with the connector, tighten the retainer screws to secure the module in the expansion slot.
    

   The slide-in modules are not hot-swappable. Be sure you power off the switch before installing any of these modules.

2.5 Connecting to the Stack's Backplane

Plug one end of the stack cable (provided with the package) in the "Down" port of the top unit and the other end to the "Up" port of the next unit. Repeat this step for each unit in the stack. Form a simple chain starting at the Down port on the top switch and ending at the Up port on the bottom switch (stacking up to 4 units).

2.6 Connecting the Switch System

The Switch provides 12/24 RJ-45 ports on the base unit. Each of these ports supports connection to 10Mbps Ethernet or 100Mbps Fast Ethernet, and supports full or half-duplex operation. The transmission speed for each port is automatically set by the switch to match the highest speed supported by the connected device. The transmission mode can be set for each port using auto-negotiation (if also supported by the attached device). However, if the device attached to any port on the switch does not support auto-negotiation, you can manually configure the transmission mode via the console port on the rear panel, or via an in-band connection (including Telnet, the Web agent).

2.6.1 Making a Connection to an RJ-45 Port

You can use straight-through twisted-pair cable to connect any RJ-45 (MDI-X) port on the switch to any device that uses a standard network interface such as a workstation or server, or to a network interconnection device such as a bridge or router (depending on the port type implemented).

1. Prepare the network devices you wish to network. Make sure you have installed 10BASE-T or 100BASE-TX network interface cards for connecting to the switch's RJ-45 (MDI-X) station ports.  
2. Prepare straight-through shielded or unshielded twisted-pair cables with RJ-45 plugs at both ends. Use 100-ohm Category 3, 4 or 5 cable for standard 10Mbps Ethernet connections, or 100-ohm Category 5 cable for 100Mbps Fast Ethernet connections.
3. Connect one end of the cable to the RJ-45 port of the network interface card, and the other end to any available RJ-45 port on the switch. All RJ-45 ports support 10Mbps and 100Mbps Ethernet connections. When inserting an RJ-45 plug, be sure the tab on the plug clicks into position to ensure that it is properly seated. Using the switch in a stand-alone configuration, you can network up to 24 end nodes (depending on the switch model).
   
   

   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:

When connecting to another compatible switch or hub, use straight-through cable to connect to an MDI port on the other device. You may also attach to (MDI-X) station ports at both ends if you use crossover cabling. (Refer to "Port and Cable Assignments"on Appendix C for a description of crossover cable.) Make sure each twisted-pair cable does not exceed 100 meters (328 feet). We advise using Category 5 cable for all network connections to avoid any confusion or inconvenience in the future when you upgrade attached devices to Fast Ethernet.

Restrictions on Cascade Length - The IEEE 802.3 standard recommends restricting the number of hubs (i.e., repeaters) cascaded via twisted-pair cable to 4; while IEEE 802.3u provides even stricter recommendations for Fast Ethernet. Therefore, when cascading devices other than this switch, please refer to the accompanying documentation for cascade restrictions. However, note that because switches break up the path for connected devices into separate collision domains, you should not include the switch or connected cabling in your calculations for cascade length involving other devices.

2.6.2 Connecting to a Fiber Optic Port

If you connect fiber cable to the fiber optic module, be sure you use an SC-type connector. When inserting the cable, be sure the tab on the plug clicks into position to ensure that it is properly seated. If you use an SC-to-ST converter (for 62.5/125 micron cable only), run cable from the Rx (Tx) port on the module to the Tx (Rx) port on the target device. Note that the fiber optic ports operate only at 100 Mbps, full duplex. In this mode, you can run a fiber optic link up to 2 kilometers (1.24 miles).

The media expansion modules are not hot-swappable. Be sure you power off the switch before installing any of these modules.
 

 2.6.3 Connecting to a Gigabit Uplink Port

If you connect fiber cable to a Gigabit module on the switch, be sure you use an SC-type connector. When inserting the cable, be sure the tab on the plug clicks into position to ensure that it is properly seated. If you use an SC-to-ST converter (for 62.5/125 micron cable only), run cable from the Rx (Tx) port on the module to the Tx (Rx) port on the target device.

The Gigabit module operates at 1 Gbps, with support for auto-negotiation of duplex mode and flow control. Also note that while the maximum cable length for 100BASE-FX fiber optic cable depends on the duplex mode, the maximum cable length for 1000BASE-SX fiber is the same for both full and half duplex, as shown in the following table.

Fiber Size	Fiber Bandwidth	Maximum Cable Length
62.5/125 micron	160 MHz/km	2-220 m (7-722 ft)
	200 MHz/km	2-275 m (7-902 ft)
50/125 micron	400 MHz/km	2-500 m (7-1641 ft)
	500 MHz/km	2-550 m (7-1805 ft)

2.7 Powering On the Switch

1. Plug the power cord into the power socket on the rear of the switch, and the other end into a power outlet. (If you have purchased a redundant power supply, plug it into the "DC INPUT" receptacle on the rear of the switch.)
2. Check the LED marked Power on the front panel to see if it is on. The unit will automatically select the setting that matches the connected input voltage. Therefore, no additional adjustments are necessary when connecting it to any input voltage within the range marked on the rear panel.
3. The switch performs a self-diagnostic test upon power-on. (Note that this test
   takes several minutes to complete.)
    

   NOTES:

   The unit supports a "hot remove" feature which permits you to connect or disconnect twisted-pair or fiber cables without powering off the switch and without disrupting the operation of the devices attached to the switch.

2.8 Verifying Port Status
Check each connection by viewing the port indicators shown in the following table.

LED	State	Indication
System
Power	On	Switch is receiving power.
RDP	On	Redundant power unit on.
Mgmt	On	Management agent operational
RJ-45 Ports
Link	On	Port has established a valid network connection
	Yellow	Communications have been set to 10 Mbps.
	Green	Communications have been set to 100 Mbps.
	Flashing	Port has been manually disabled, or partitioned by the system due to excessive errors.
Activity*	On	Traffic is passing through the port
FDX*	On	been set to full duplex
FC*	On	Flow control enabled.
Module Ports
Status	On	A module is installed in this slot.
Activity	On	Traffic is passing through the port.
* Use the Mode Select button to select LED display mode.

2.9 Verifying System Operation

Verify that all attached devices have a valid connection. The switch monitors the link status for each port. If any device is properly connected to the switch and transmitting a link beat signal, the Link indicator will light up for the corresponding port. If the Link indicator fails to light when you connect a device to the switch, check the following items:

• Be sure all network cables and connectors are properly attached to the connected device and the switch.
• See if your cable is functioning properly by using it for another port and attached device that displays valid indications when connected to the network.
• Be sure no twisted-pair cable exceeds 100 meters (328 feet). 100Mbps fiber cable should be under 2 kilometers (1.24 miles). And the maximum length for Gigabit connections is listed in the table on the preceding page.

2.A  Applications

This switch segments your network, significantly increasing both bandwidth and throughput. Any port on the switch can be attached to a hub (a shared collision domain) or provide a dedicated link to a single network device (such as a workstation or server). When a port on the switch is connected to a hub (a 10 or 100 Mbps repeater), the bandwidth provided by that port is shared by all the devices connected to the attached hub. However, when a port is connected to an end node or to a device that breaks up the collision domain (e.g., another switch, bridge or router), the attached device has access to the full bandwidth provided by that port.

Bridging Functions - This switch provides fully transparent bridging functions. It automatically learns node addresses, that are subsequently used to filter and forward all traffic based on the destination address. When traffic passes between devices attached to the same shared collision domain, those packets are filtered from the switch. But when traffic must be passed between unique segments (i.e., different ports on the switch), the high-speed switching fabric forwards the packets at near zero latency.

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. Flexible Configuration - This switch is not only designed to segment your network, but also to provide a wide range of options in setting up network connections. It can be used as a simple stand-alone switch; stacked up to four high; or connected with standard repeater hubs, switches, or other network interconnection devices in various configurations.

Media Expansion Options - You can use a Fast Ethernet fiber module to connect to remote sites up to 2 kilometers (1.24 miles) away, or a Gigabit module to support applications such as high-speed file servers, or for connecting to a collapsed Gigabit backbone switch.