LevelOne GSW-1641 User manual

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LevelOne
GSW-1641
16-Port Gigabit with 1-Port SFP
Web Smart Switch
User Manual
Version 1.0-0604

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FCC Certifications
This Equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own expense.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2) this device must
accept any interference received; including interference that may cause undesired
operation.
CE Mark Warning
This equipment complies with the requirements relating to electromagnetic compatibility, EN
55022 class A for ITE, the essential protection requirement of Council Directive 89/336/EEC
on the approximation of the laws of the Member States relating to electromagnetic
compatibility.
Company has an on-going policy of upgrading its products and it may be possible that
information in this document is not up-to-date. Please check with your local distributors for
the latest information. No part of this document can be copied or reproduced in any form
without written consent from the company.
Trademarks:
All trade names and trademarks are the properties of their respective companies.
Copyright © 2006. Digital Data Communications, Inc. All Rights Reserved.

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Table of Contents
UNPACKING INFORMATION....................... 5
INTRODUCTION ............................................... 5
GENERAL DESCRIPTION ............................................................................5
KEY FEATURES .........................................................................................5
THE FRONT PANEL....................................................................................6
THE REAR PANEL......................................................................................7
INSTALLATION................................................. 8
DESKTOP INSTALLATION...........................................................................8
RACK-MOUNT INSTALLATION ...................................................................8
INSTALLING NETWORK CABLES................................................................9
NETWORK APPLICATION ...........................................................................9
FUNCTIONAL DESCRIPTION..................... 10
JUMBO FRAME.........................................................................................10
FLOW CONTROL AND BACK PRESSURE ...................................................10
MIRROR...................................................................................................10
VLAN.....................................................................................................10
TRUNK (AGGREGATION) .........................................................................10
QUALITY OF SERVICE (QOS)...................................................................10
SNMP.....................................................................................................10
MANAGEMENT GUIDE.................................. 11
ACCESS THE SWITCH...............................................................................11
HOMEPAGE..............................................................................................12
SYSTEM...................................................................................................13
PORT .......................................................................................................14

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VLAN.....................................................................................................15
PVID ......................................................................................................16
AGGREGATION/ TRUNK CONFIGURATION ...............................................17
QUALITY OF SERVICE..............................................................................18
MIRROR...................................................................................................22
RATE LIMIT.............................................................................................23
SNMP.....................................................................................................24
DISCOVERY.............................................................................................25
STATISTICS OVERVIEW ...........................................................................26
DETAILED STATISTICS.............................................................................26
WARM RESTART .....................................................................................27
FACTORY DEFAULT.................................................................................27
SMART BOOT ..........................................................................................27
SOFTWARE UPLOAD................................................................................28
PRODUCT SPECIFICATIONS..................... 29

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Unpacking Information
Thank you for purchasing GSW-1641 Gigabit Web Smart Switch. Before you start,
please verify that your package contains the following items:
1. One GSW-1641 Web Smart Switch
2. One AC power cord
3. Rack-mount brackets
4. Stackable kit
5. Manual CD
Introduction
General Description
Easily boosting your networking throughput, LevelOne GSW-1641 provides you 16
10/100/1000Mbps gigabit ports that lead you to a real gigabit connection. Users are
now able to transfer high bandwidth-demanded files faster and get a real efficiency
improvement with the user-friendly web-based management interface. This product
also equips one mini GBIC slot for your flexible fiber connection. Use of the
mini-GBIC port disables the connection of 16th copper port automatically.
The management functionalities provide efficient network usage. VLAN reduces the
collisions from widely broadcasting. Port aggregation enlarges the bandwidth of
backbone connection. QoS is supported to secure the bandwidth for some
bandwidth-demanded applications including VoIP or videoconference. The 802.3x
and backpressure flow control mechanisms are also supported to ensure the
correctness of data transmitting.
Key Features
 16 fixed 10/100/1000Mbps gigabit ethernet ports for easy network connecting
application.
 Equips one SFP port for optional fiber connection.
 Provide auto-discovery function for easy network management.
 Provide 8K MAC address entries and 16 groups VLAN table
 Support port mirror.
 Support up to 8 ports and 8 groups port aggregation.
 Support QoS for better communication quality.
 Support full duplex flow control and half duplex back pressure
 Store-and-forward forwarding scheme
 Error packet filtering
 Support Jumbo frame 9K bytes
 Supports 340K bytes buffer memory
 Support web-based management interface.
 FCC Class A, CE, Meet RoHS.

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The Front Panel
The front panel consists of LED indicators. Please refer to the following paragraph for
information.
LEDs Definition
System LED
The switch provides a power LED for the device.
LED Status Operation
Steady Green The switch is powered on
Power Off The switch is powered off
Port LEDs
The switch provides one “1000M” LED and one “10/100M” LED for each port.
LED Status Operation
Green The port is connected at 1000 Mbps
Blinking Green A valid link is established, and there is data
transmitting/receiving.
1000M
Off No valid link on this port or the Port is connected at 10/100
Mbps
Steady Green Avalid link is established, and there is no data
transmitting/receiving.
Blinking Green A valid link is established, and there is data
transmitting/receiving.
10/100M
Off No valid link on this port or the port is connected at 1000
Mbps
Attention：The Mini GBIC slot shares the same LED indicator with the
last RJ-45 (copper) port.

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The Rear Panel
The rear panel of the switch:
Port Operation
The auto-negotiation feature allows those ports running at one of the following
operation modes:
Media Speed Duplex Mode
Full Duplex
10Mbps Half Duplex
Full Duplex
100Mbps Half Duplex
10/100/1000Mbps(copper)
1000Mbps Full Duplex
1000Mbps(Fiber)
(mini GBIC required) 1000Mbps Full Duplex
Note: For the last port, when both the fiber and cooper interfaces are connected, the
system adapts the fiber interface and disables the relevant cooper port automatically.
Reset Button
You can use this button to reset the switch or restore factory default settings. To reset
the switch, press the button once.
To restore factory default settings, press and hold the button for three seconds.
Power Receptacle
To be compatible with the electric service standards around the world, the switch is
designed to afford the power supply in the range from100 to 240VAC, 50/60Hz.
Please make sure that your outlet standard to be within this range.
To power on the switch, please plug the female end of the power cord firmly into the
receptacle of the switch and the other end into an electric service outlet. After the
power cord installation, please check if the power LED is lit for a normal power status.

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Installation
This switch can be placed on your desktop directly, or mounted in a rack. Please refer
to the instructions for installation.
Before installing the switch, we recommend:
1. The switch is placed with appropriate ventilation environment. A minimum 25mm
space around the unit is recommended.
2. The switch and the relevant components are away from sources of electrical
noise such as radios, transmitters and broadband amplifiers.
3. The switch is away from environments beyond recommend moisture.
Desktop Installation
1. Install the switch on a level surface that can support the weight of the unit and
the relevant components.
2. Plug the switch with the female end of the provided power cord and plug the
male end to the power outlet.
Rack-mount Installation
The switch may be standalone, or mounted in a rack. Rack mounting facilitate to an
orderly installation when you are going to install series of networking devices.
Procedures to rack-mount the switch:
1. Disconnect all the cables from the switch before continuing.
2. Place the unit the right way up on a hard, flat surface with the front facing you.
3. Locate a mounting bracket over the mounting holes on one side of the unit.
4. Insert the screws and fully tighten with a suitable screwdriver.
5. Repeat the two previous steps for the other side of the unit.
6. Insert the unit into the rack and secure with suitable screws (optional).
7. Reconnect all the cables.

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Installing Network Cables
1. Crossover or straight-through cable: All the ports on the switch support
auto-MDI/MDI-X functionality. Both straight-through or crossover cables can be
used as the media to connect the switch with PCs as well as other devices like
switches, hubs or router.
2. Category 3,4,5 or 5eUTP/STP cable: To make a valid connection and obtain the
optimal performance. An appropriate cable that corresponds to different
transmitting/receiving speed is required. To choose a suitable cable, please refer
to the following table.
Media Speed Wiring
10Mbps Category 3,4,5 UTP/STP
100Mbps Category 5 UTP/STP
10/100/1000Mbps
copper 1000Mbps Category 5,5e UTP/STP
1000Mbps Fiber
(Mini GBIC required) 1000Mbps
The cable type differs from the
mini-GBIC you choose. Please refer to
the instruction came with your
mini-GBIC.
Network Application

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Functional Description
Jumbo Frame
With Jumbo Frame supported, it is allowed for the switch to transport identical data in
fewer frames. Hence helps to ensure fewer overheads, shorten processing time, and
reduce interrupts.
Note: To enable Jumbo Frame, Flow Control should be enabled in advance.
Flow Control and Back Pressure
Flow control and Back Pressure both contributes for lower and higher speed devices
to communicate to each other hence ensures the correctness of data transmitting.
The 802.3x Flow Control and Back Pressure mechanisms work respectively for full
and half duplex modes. Flow control can be enabled or disabled on a per-port basis.
Mirror
The Mirror function provides network administrator to monitor the traffic. By
forwarding a copy of the packets that received or transferred by the monitored port,
the sniffer port received all the packets and hence is able to monitor the traffic of the
specified port.
VLAN
With VLAN supported, the network can be segmented in groups to reduce the
collisions from widely broadcasting. The device supports both port-based VLAN and
802.1Q tag-based VLAN. Port-based VLAN classifies incoming packets to VLANs
according to their ingress port. The 802.1Q based VLAN add a tag to the header of
the packet to classify their VLANs.
Trunk (Aggregation)
The Trunk functionality integrates several ports to enlarge the bandwidth that helps to
boost the backbone connectivity. The switch allows the Maximum 8 group and 8
members for each group.
Quality of Service (QoS)
The QoS service classifies packets into different precedence. The packets are
transmitted and received by their classified priorities. This mechanism helps high
bandwidth demanded applications such as VoIP to get an unobstructed connection.
SNMP
This device is SNMP(Simple Network Management Protocol)-management
supported. This allows this product to be monitored or inspected by a SNMP
management station.

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Management guide
Access the Switch
This section instructs you how to enter and proceed the advanced management
capability, which can be accessed by internet browser over the network.
To access the web-based management interface, you should configure the
management station with an IP address and subnet mask that compatible to your
switch.
The factory default value of the switch:
IP：192.168.1.1
Subnet Mask：255.255.255.0
Default Gateway：192.168.1.254
1. Running your Web Browser and enter the IP address “192.168.1.1” in the Address
field.
2. Key in the user name and password to pass the authentication. The factory default
value of Username and Password is “admin”.

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Homepage
After authentication procedure, the “SYSTEM Configuration” page shows up as the
Homepage. You may click the hyperlinks on the left side of each page to get access
to each management function.

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System
The “System” window provides the switch information and allows users to configure
the switch properties.
Items Functions
MAC Address The MAC address of this device..
S/W Version The software version of this device.
IP Address Setup the IP address of the switch
Subnet Mask Setup the Subnet Mask of the switch
Gateway Setup the Gateway of the switch
Management VLAN The VLAN group that is allowed to access the
WEB-based management interface.
User Name The Login name. (Default: admin)
Password The Login password. (Default: admin)
System Name The name of the device.
To save the configuration of the system, click “Apply” to save
Note:
After applying a new IP address, a new login page will be started automatically.
Please login again to proceed to other configurations.

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Port
This “Port Configuration” page shows the link status of each port and allows users
to configure speed, flow control and Max frame size for each port.
Items Functions
Link Shows the link status of each port. The column lights green with
the link speed while there is valid connection on this port.
Mode Select a speed for this port. “Auto Speed” enables
auto-negotiation. “Disable” stop the port from functioning.
Flow Control Mark the checkbox to enable the FDX Flow control, or unmark
to disable.
Max Frame length To adjust the size of Jumbo Frame. The length is 1518 bytes.
The Maximum value can be up to 9600 bytes.
To save the configuration of the system, click “Apply” to save. You can also click the
“Refresh” button to see the latest status of each port.

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VLAN
VLAN divides the network members into groups to reduce packets collisions and
improve the network efficiency. The switch supports 802.1Q tag-based VLAN. Please
follow the instructions to configure.
 To add new VLAN groups,
1. Fill in a VLAN id from 2 to 4094 in the “VLAN\Port” column.
2. Select the ports for each VLAN groups.
3. Click the “Apply” button to execute.
 To delete a VLAN group
1. Clear the members of this VLAN group by clicking those marked checkboxes.
2. Clear the VLAN id of the VLAN you want to remove in the “VLAN\Port”
column. (Don’t type N/A. Just leave it blank)
3. Click the “Apply” button to execute.
Note:
1. When a port is configured to a specific VLAN group, a PVID that
corresponding to the VLAN id will be assigned automatically to this port. (Ex,
when you make port 3 of a VLAN with VLAN id “2”, the PVID “2” will be
assigned automatically to port 3)
2. Settings in VLAN, Port aggregation, and Mirror are correlative. Please make
sure that the setting won’t influence each other.

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PVID
When the VLAN-enabled switch receives a tagged packet, the packet will be sent to
the port’s default VLAN according to the PVID (port VLAN ID) of the receiving port.
Items Functions
Port Port Number 1~16
Egress Select “tagged” in the drop list to enable the PVID checking and tag
inserting of one port, and select “untagged” to cancel.
For example, if an Egress-tagged port receives an untagged frame, it will
be transmitted as a PVID tagged frame. For the detail tagging status,
please refer to the following table.
Untagged Tagged
Packet Frames
In Packet Frames Out Packet Frames In Packet Frames Out
Untagged Untagged Untagged Tagged (PVID)
Tagged Untagged Tagged (VID) Tagged (VID)
Pri-tagged Untagged Pri-tagged Tagged (PVID)
PVID Port VLAN ID(1~4094)
Only
tagged Enable: block all un-tagged packets from accessing this port. Disable: All packets are allowed to access this port.

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Aggregation/ Trunk Configuration
To set up the port trunk groups, put the ports number into the same aggregation
group. There are eight groups to choose. Don’t forget to click the “Apply” to save the
setting.
There are three aggregation modes for you to setup, SMAC (Source MAC), DMAC
(Destination MAC), and XOR. SMAC mode selects the path of packets according to
source MAC while DMAC mode selects path according to destination MAC. XOR
mode calculates the result of DMAC and SMAC mode to decide the path of packets.

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Quality of Service
QoS enhances the communication quality by giving different precedence to classified
packets. This switch provides port-based, tag-based and DSCP QoS modes:

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Port-based mode QoS:
The port-based QoS allows users to configure certain ports as high or low priority. To
give priority level for each port:
1. Select “Port” in the “Mode” column for those ports that are going to perform
port-based QoS. Click the “Apply” button.
2. Click the “Port priority” button. The “Port Priority Setting” page shows up.
3. Click on the drop list to specify priority levels.
4. Click “Apply” to execute.

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Tag based QoS:
The tag-based QoS decides packet priority according to the tags that adding on the
packets.
To configure Tag-based QoS configuration:
1. Select “Tagged” in the “Mode” column for those ports that are going to
perform tag-based QoS. Click the “Apply” button.
2. Click the “Tag priority” button. The “Tag Priority Setting” page shows up.
3. Select the port that you are going to configure from the drop list.
4. Give the priorities as high or low for each Priority Tag types.
5. Click the “Apply” button again to execute your configuration.