LevelOne GSW-2490TXM User manual

1
LevelOne
GSW-2490TXM
24-Port + 2 Slide-in Slots SNMP Switch
1.
Introduction
Welcome to the World of Switching-Network.
In modern society, communication and information sharing are
fundamental to our lifestyle. Computer networks are one of the
fastest means of communication.
As your company grows, your network demands will increase. …

2
Figure 1-1. The
24TP+2Exp-Slot Switch
The LevelOne GSW-2490TXM SNMP Switch are designed to
provide your network with Ethernet, Fast Ethernet, Gigabit Ethernet
connectivity over twisted pair and fiber optic cabling. Two expansion
slots on the front panel of the LevelOne GSW-2490TXM SNMP
Switches further add to the flexibility of the systems.
The LevelOne GSW-2490TXM SNMP is a managed Fast Ethernet
switch, that provides a number of exceptional features with
extremely flexible configuration expansions without compromising
the wire speed performance.
The LevelOne GSW-2490TXM SNMP switch provide wire-speed
switching with advanced bridging functions like VLAN, priority,
multicast filtering, link aggregation and port mirroring. It can also
support two different GBIC type as Mini GBIC LC and standard
GBIC SC.
Many comprehensive network management functions are provided,
such as Spanning Tree protocol for loop prevention and full
recovery, VLAN configuration and IGMP snooping for multicast
grouping configuration. VT100 console, remote telnet login, SNMP,
and Web Interfaces are all standard management features.
Features
_ Conforms to IEEE802.3,IEEE802.3u,IEEE802.3z ,IEEE802.3x
IEEE802.1p, IEEE802.3ac, IEEE802.1D, IEEE802.1Q

 24 auto-sensing 10/100Mbps Ethernet RJ-45 ports

 2 Expansion slots for optional modules: 1-port Duplex SC
Gigabit ( SX/LX ), 100Mbps Fiber ( SC/MT-RJ/VF-45 ),
1 RJ-45 for UTP or STP Gigabit 1000T Module with
Automatic MDI/MDIX support, Mini GBIC LC type and
Standard GBIC SC type.

 One Console-connecting port for communication parameter
configuration

 Auto-negotiation & Full-duplex/half-duplex supported

 Store-and- Forward error free packet forwarding scheme

 9.6 GB Backplane Bandwidth

 8K-entry MAC address table

 6Mbits share memory

 Full wire speed forwarding rate

3

 LED-indicators for Power, per port Link/Active, FDX/COL
10/100M Gigabit Module LK/ACT, FDX/ COL statuses
Intelligent Management Features

 Console and Telnet Configuration

 Web-based management

 SNMP network management

 IEEE 802.1Q Tagging VLAN and Port Based VLAN
supported

 IEEE802.3x Flow Control Mechanism is used in Full-Duplex
mode and back-pressure is used in half-duplex

 IEEE 802.1D Blocking, Learning, and Forwarding state are
supported for Spanning Tree Protocol

 IEEE 802.3ac Extends the maximum Ethernet Length to
1522 to Add the 4-Byte VLAN Tag

 IEEE802.1p, provides four levels priority per port, packets
are prioritized according to the source port or the 802.1p
priority tag

 Security Functions Supported

 IGMP Snooping and GMRP protocol supported

 Link Aggregation function supported

 Port Priority - 802.1p & TOS (Type of Service ) supported

 TFTP support for firmware on network upgrade

 Port Mirror supported
Package Contents
Unpack the carton of the LevelOne GSW-2490TXM SNMP Switch
and verify them against the checklist below.
LevelOne GSW-2490TXM SNMP Switch Rubber Feet

4
GSW-2490TXM
24-Port + 2 Slide-in Slot
SNMP Switch
Rack-mounted Kit RS-232 cable User Guide
Power Cord
Figure 1-2. Package Contents
Compare the contents of your LevelOne GSW-2490TXM SNMP
Switch package with the standard checklist above. If any item is
missing or damaged, please contact your local dealer for service.
Management Methods
The LevelOne GSW-2490TXM SNMP Switch supports following
management methods:

 Console and Telnet Management

 Web-based Management

 SNMP Network Management
Console and Telnet Management
Console Management is done through the RS-232 Console Port.
Managing the LevelOne GSW-2490TXM SNMP Switch in this
method requires a direct connection between PC and the LevelOne
GSW-2490TXM SNMP Switch. While Telnet management is done
over the network. Once the LevelOne GSW-2490TXM SNMP
Switch is on the network, you can use Telnet to Log in and change
the configuration.
SNMP Network Management
SNMP (Simple Network Management Protocol) provides a means
to monitor and control network device, and to manage
configurations, statistic collection, performance, and security.
Data is passed from SNMP agents, which are hardware & software

5
processes reporting activity in each network device to the
workstation console used to oversee the network. The agent return
information contained in a MIB (Management Information Base),
which is a data structure that defines what is obtainable from the
device and what can be controlled.
2.
Hardware Description
This section mainly describes the hardware of the LevelOne GSW-
2490TXM SNMP Switch, and gives a functional overview of the
Switch.
The physical dimensions of the LevelOne GSW-2490TXM
SNMP Switch are: 440mmx 225mmx 44.5mm ( Lx Wx H )
Hardware Description
The LevelOne GSW-2490TXM SNMP Switch is a fixed 24-port
auto-sensing Ethernet RJ-45 connectors, and its chassis contains
two expansion slots. The optional modules come with the built-in
CPU module.
The Front Panel
The Front Panel of the LevelOne GSW-2490TXM SNMP Switch
consists of 24x auto-sensing 10/100Mbps Ethernet RJ-45 Ports, two
optional expansion slots, and Console port. The LED Indicators are
also located on the front panel of the Switch.
Figure 2-1. The Front Panel of LevelOne GSW-2490TXM SNMP Switch
10/100Base-TX RJ-45 ports ( Auto MDI/MDIX ):
24x 10/100Mbps auto-sensing port for 10Base-T or 100Base-TX
devices connection. Note: [ MDI/MDIX means that you can connect
LED Indicators
RJ-45 Ports
Console Port
Expansion Slots for Optional
Module

6
to another Switch or workstation without changing non-crossover or
crossover cabling. ]
Expansion Slots :
For two of the following Optional modules :
1 Port Gigabit 1000Base-T Intelligent Switch Modules,
1 Port Gigabit 1000Base-SX/LX Intelligent Fiber Modules.
1 Port 100Base-FX Intelligent Fiber Module
Console Port :
Console Management can be done through the Console Port. It
requires a direct connection between the LevelOne GSW-2490TXM
SNMP Switch and an end station ( PC ) via a RS-232 cable.
LED Indicators
All LED indicators are located on the front panel of the LevelOne
GSW-2490TXM SNMP Switch. They provide a real-time indication
of system and operational status. The following table
gives descriptions of the LED status and their meanings.
LED Status Description
Green Power On
PWR
Off Power is Off.
Green The port is operatin
g
at the speed of 100Mbps.
100
Off No device attached or in 10Mbps mode
Figure 2-2 The LED
Indicators

7
Green The port is connecting with the device.
Blinks The port is receiving or transmitting data.
LK/ACT
Off No device attached.
Yellow The port is operating in Full-duplex mode.
Blinks Collision of Packets occurs in the port.
FD/COL
Off No device attached or in half-duplex mode .
Table 2-1. The Descriptions of LED Indicators
Rear Panel
The 3-pronged power plug, On/off Switch are located at the Rear
Panel of the LevelOne GSW-2490TXM SNMP Switch. ( The
Ventilation fan is located on the side of the Switch ). The Switch will
work with AC in the range 100-240V AC, 50-60Hz.
Figure 2-3. The Rear Panel of the LevelOne GSW-2490TXM SNMP
Switch
Power On
After all network cables are connected, plug the power cord into the
power socket on the back panel and the other end into a power
outlet. Turn the power On using the power Switch on the back
panel.
Check the front panel Power indicator to see if power is properly
supplied. The Switch uses a universal power supply that requires no
additional adjustment.
Diagnostic Test
After the installation is completed and AC power is applied to the
Switch, the system will automatically perform a diagnostic test.
When the Power LED is on within 5 seconds, the Diagnostic status

8
LEDs will soon flash red.
When the Switch passes the self-test within 15 seconds, the Link
/ACT LED turns on.
Note : If the Switch fails the self-test, the Diag LED will blink.
3.
Connecting to the Network
This section provides the installation procedure and instructions for
assigning IP address.
Pre-Installation Requirements
Before you start hardware installation, make sure your installation
environment has below items:
PCs with 10/100Mbps Ethernet NICs/ 100Mbps Fiber NICs:
Your PC must have a standard Ethernet interface to connect to
the Switch.
UTP cable with RJ45 connectors/ Fiber cable with MT-RJ/
VF-45 connectors: Check if the cable and connectors work
properly.
A power outlet: 100 to 240V AC at 50 to 60 Hz: Make sure
that the Switch power is accessible and cables can be
connected easily.

9
Dedicated power supply: Use dedicated power circuits or
power conditioners to supply reliable electrical power to the
network devices.
A dry cool place: Keep the Switch away from moisture. Avoid
direct sunlight, heat source, and high amount of electromagnetic
interference around.
Mounting tools: If you intend to mount the Switch on a rack,
make sure you have all the tools, mounting brackets, screws
etc.
Caution:
Cabling must be away from sources of electrical noise such as
radio, computers, transmitters, broadband amplifiers, power
lines and keep away from TVs, hair dryers, and microwave.
Air flow around the Switch and through its vents on the rear
cannot be restricted.
Mounting the Switch
The LevelOne GSW-2490TXM SNMP Switch is suitable for use in
an office environment where it can be rack-mounted in standard EIA
19-inch racks or standalone.
Desktop Mounting
1. Set the Switch on a sufficiently large flat space with a power
outlet nearby, and about the center of all networked devices.
2. Make sure mounting surface on the bottom of the Switch is
grease dust free.
3. Remove adhesive backing from your Rubber Feet.
Figure 3-1. Attaching Rubber Feet to each corner
on the bottom of the Switch
4. Apply the Rubber Feet to each corner on the bottom of the
Switch. These footpads can prevent the Switch from
shock/vibrations.

10
Caution: Do not place objects on top of the Switch.
Rack-mounted Installation
The LevelOne GSW-2490TXM SNMP Switch come with a rack-
mounted kid and can be mounted in an EIA standard size, 19-inch
Rack. The Switch can be placed in a wiring closet with other
equipment.
Perform the following steps to rack mount the Switch:
A. Position one bracket to align with the holes on one side of the
Switch and secure it with the smaller bracket screws. Then
attach the remaining bracket to the other side of the Switch.
Figure 3-2. Attach mounting brackets with screws
B. After attached both mounting brackets, position the LevelOne
GSW-2490TXM SNMP Switch ( UTP/MT-RJ/VF-45 ) Switch in
the rack by lining up the holes in the brackets with the
appropriate holes on the rack. Secure the Switch to the rack with
a screwdriver and the rack-mounting screws.

11
Figure 3-3. Mount the 24TP+1Fiber Module Switch in an EIA
standard 19-inch Rack
Note: For proper ventilation, allow about at least 4 inches ( 10 cm )
of clearance on the front and 3.4 inches ( 8 cm ) on the back of the
Switch. This is especially important for enclosed rack installation.
Connecting to the Switch
The Console port is a male DB-9 connector that enables a
connection to a PC or terminal for monitoring and configuring the
LevelOne GSW-2490TXM SNMP Switch. Use the supplied RS-232
cable with a female DB-9 connector to connect a terminal or PC to
the Console port.
The Console configuration ( out of band ) allow you to set your
Switch to enable a user at a remote console terminal to
communicate with the LevelOne GSW-2490TXM SNMP Switch as if
the console terminal were directly connected to it.

12
Figure 3-4. Connecting the LevelOne GSW-2490TXM SNMP Switch
to a terminal via RS-232 cable
Login in the Console Interface
When the connection between Switch and PC is finished, turn on
the PC and run a terminal emulation program or Hyper Terminal
and configure its communication parameters to match the
following default characteristics of the console port:
Baud Rate: 9600 bps
Data Bits: 8
Parity: none
Stop Bit: 1
Control flow: None
Figure 3-5. The settings of
communication parameters

13
After you have finished parameter settings, click “OK“. When the
screen shows above, press “admin“ Key for the User name, then
the Main Menu of console management appears.
Main Menu
Figure 3-6. The screen of Main Menu
After login you will see the main menu screen as illustrated in the
picture. The main menu displays all the sub-menu and pages that
are available in the console interface.
1. System Information

14
Figure 3-7. The System Information Menu
The system information screen displays information such as
hardware, software versions, and system up time. You can also
enter specific information about you and your organization here.
2. Management Setup
Figure 3-8. The Management Setup Menu
The management setup menu contains 6 submenus and are
discussed in the section in the following pages.
2.1. Network Configuration

15
Figure 3-9. The Network Configuration Men
This screen is provided to change the IP setting of your switch
according to your network configuration. After changing the setting
you need to save it so that whatever changes you made can take
effect. Also note that the value under Current column will not reflect
the changes you made until next time you login after resetting the
switch.
2.2. Serial Port Configuration
Figure 3-10. The Serial Port Configuration
You can change the serial port setting through this screen to suit
you environment, however, we recommend you to keep the default
setting.
2.3. SNMP Community Setup

16
Figure3-11. The SNMP Community Menu
In the SNMP Community Menu, you can create different
communities and customize their access right. Use <TAB> key to
move the highlight bar and select desired community to modify or
add a new community (use space bar to toggle the access right
and status)
2.4. Trap Receiver
Figure 3-12. The Trap Receiver Menu
Use trap receiver screen to designate certain community to receive
trap(s) generated by the system.
2.5. Management Capability Setup

17
Figure 3-13. The Management Capability setup Menu
This is where you can enable / disable Web-Based management
capability which in turn allow or disallow the access to
management function through the use of a web browser such as
Microsoft IE.
2.6. Trap Filter Setup
Figure 3-14. The Trap Filter Setup menu
The system can generate a set of SNMP traps upon the
occurrence of those events. By checking a filter event, you are
turning off the filter and enabling the trap associated with that
event.

18
3. Device Control Menu
Figure 3-15. The Device Control menu
Device control menu contains 15 submenus where you get to maneuver
most of the functions and features.
3.1. Switch Device Configuration
Figure 3-16. The Switch Device Configuration menu
Use <Space Bar> key to toggle the Enable / Disable field and type
in appropriate value in the Time and Priority field.
•Broadcast Storm Prevention can be set to 6% 0r 20% beside
Disable. The percentage indicates the allowance against the
capacity. When its disable there will be no limitation on the
incoming rate of broadcast / multicast traffic, otherwise limitation on
those traffics will be set to the percentage accordingly.
•When QoS is enabled you can map the Type of Service of your

19
choice (according to IEEE 802.1p) to the four priority levels
provided.
•There are three different mode of VLAN supported in this system –
802.1Q, Port Base VLAN, MTU/MDU. The choice you made here
will ultimately decide the VLAN mode and function for entire system
(the configuration of the other two VLAN mode will have no effect to
the system behavior).
3.2. Switch Port Configuration
Figure 3-17. The Switch Port Configuration menu
The Ports (24+2) of the system are divided and displayed in three
separated pages. Use PREV PAGE, NEXT PAGE to list desired
port range and select the port with navigation key.
In the port configuration screen (display in next page) you can
configure the common characteristics such as speed negotiation,
flow control, and VLAN ID as well as the following special features
provided with the system:
•Per-Port Priority – Four levels of priority (High, Medium, Low and
Lowest) can be set to each individual port. However, the priority
level set through QoS / Type of Service configuration in the device
configuration menu will have higher precedence.
•Local IP Forwarding – A policy instrument that provides a way for
local IP traffic to cross the local VLAN boundary set force in a
typical (secure) access environment.
•Bandwidth provisioning - 8 levels of speed control facilitate the
provisioning control for access provider.
3.3. Permanent Address Configuration

20
Figure 3-18. The Permanent Address Configuration menu
There are 128 static unicast groups and 32 multicast supported by
the system. Two submenus contains in this section.
3.3.1. Static Unicast Address Configuration
You can creat, modify, or delete Static Unicast Address by
selecting entries from the following screen.
Enter the MAC address of a system you wish to set as static
unicast address the port associated with the system. Use<Space
Bar> to toggle the status field between Disable, Forwarding, Filter-
In, and Filter-Out.
•Disable – This Unicast Address entry has no effect to the switch
system.
•Forwarding – All packets designated to this MAC address will be
forward (and only to) the designated port.
•Filter-in – Only packets originated to from this MAC address will
be permitted to enter this port, in other words, packets originated
from other MAC address will be dropped at this port automatically.
•Filter-out – All packets designated to this MAC address will be
blocked (the port is disregard here).
3.3.2. Static Multicast Address Configuration
In the Static Multicast Configuration Menu screen, besides the
MAC Address and Status field (Enable/Disable), you add
member(s) to the group by checking the port(s) with <Space Bar>
key.
3.4. Port Statistics