Manual 13260711
500-7620DS4GC
20 PORTS SFP (100/1000BASE-X) WITH 4
COMBO PORTS UPLINK MANAGEMENT SWITCH
User’s Guide
Version 0.91
Trademarks
Contents subject to revision without prior notice.
All other trademarks remain the property of their respective owners.
Copyright Statement
This publication may not be reproduced as a whole or in part, in any way whatsoever
unless prior consent has been obtained from the owner.
FCC Warning
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 limitations are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if the
equipment is not installed and used in accordance with the instructions, it may cause
harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.

Consult your local distributors or an experienced radio/TV technician for help.

Shielded interface cables must be used in order to comply with emission limits.
Changes or modifications to the equipment, which are not approved by the party
responsible for compliance, could affect the user’s authority to operate the equipment.
Copyright © 2011 All Rights Reserved.
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.
2
Table of Contents
1. INTRODUCTION ........................................................................................... 4
1.1 The Managed Ethernet Switch ................................................................. 4
1.2 Front Panel and Rear Panel ..................................................................... 6
1.3 Network Management .............................................................................. 8
2. INSTALLATION ........................................................................................... 10
2.1 Installation Requirements ....................................................................... 10
2.2 Checking the Package Contents ............................................................ 10
2.3 Installing the Managed Switch ................................................................ 11
2.4 Powering ON .......................................................................................... 12
2.5 Connecting the Switch to Network .......................................................... 13
3. OPERATION ................................................................................................ 14
3.1 LED Definitions....................................................................................... 14
4. MAINTENANCE .......................................................................................... 16
4.1 Fault Identification .................................................................................. 16
4.2 Hardware Replacement Procedures ...................................................... 17
4.3 Firmware Upgrade .................................................................................. 17
3
1. INTRODUCTION
Thank you for choosing 500-7620DS4GC 20 PORTS SFP (100/1000BASE-X)
WITH 4 COMBO PORTS MANAGEMENT SWITCH. This Managed Switch is
specifically designed to meet the emerging FTTX and Metro Ethernet
requirements that can extend the transmission distance up to 80KM depending
on SFP modules used. The design of the Managed Switch with 1U height and
19-inch depth classic appearance is rack-mountable and also achieves the
highest density. The managed Switch can provide the best performance and
price ratio when multiple fiber ports need to be deployed in networking
environment.
Figure 1. Front Panel
Figure 2. Rear Panel
1.1 The Managed Ethernet Switch
This Managed Switch is compact, 19-inch, and rack-mountable, and has 20
100/1000Mbps SFP ports and 4 combo ports (either 10/100/1000 copper or
1000Mbps SFP connectivity) on the front panel. This Managed Switch provides
high performance store-and-forward switching capability plus other advanced
features such as QoS, VLAN, etc..
Clear, at-a-glance per-port LED indicators make it easier for users to control and
manage network status. The built-in management module also allows users to
configure, control and monitor the system locally via console or remotely via
SNMP based management system.
This Managed Switch is particularly suitable for the SFP to Metro Ethernet
applications. Its low profile appearance with 1U height and laptop simple 19 inch
dimensions achieves the highest density and can be used in closet wiring or
used as a desktop switch.
4
Key Features
 19 inch, 1U high
 20 x 100/1000BASE-X SFP ports
 4 x Combo ports (10/100/1000Mbps RJ-45 or 1000Mbps SFP)
 1 x RJ-45 console port
 Comply with IEEE 802.3, 802.3u, 802.3ab, 802.3z standards
 Support Auto-Negotiation in TP ports
 Support MDI/MDIX Auto-Crossover in TP ports
 Switching Features
 Store-and-forward switching
 MAC Address table: 8K
 Memory buffer: Total 1391K bytes
 VLAN: Support up to 1024 VLAN Groups
 Support jumbo frames on all ports up to 9600 bytes size

Support Port Mirroring
 Support QoS Classification based on IEEE 802.1p, VID, TOS/DSCP,
EtherType and L4 Port
 Comply with IEEE 802.1p Priority
 Comply with IEEE 802.1q Tag VLAN/Port-based VLAN
 Support Q-in-Q VLAN
 Comply with IEEE 802.1w Rapid Spanning Tree Protocol
 Comply with IEEE 802.1x Port Based Network Access Control
 Comply with IEEE 802.3ad Link Aggregation Control Protocol (LACP)
 Support IGMP snooping V1 and V2
 Support IGMP filtering/fast leave
 Support Multicast VLAN Registration (MVR)
 Management Functions
 Console
 Telnet
 SNMP
 Web
 RMON
 FTP/TFTP upgrade
5
1.2 Front Panel and Rear Panel
Front Panel
The front panel is configured as follows:
 Console port: An asynchronous serial console port supporting the
RS-232 electrical specification. This is used to connect a console to
the Managed Switch by using the supplied RS-232 to RJ-45 cable
with the switch. This interface configuration is 9600, N, 8,1.

Reset Button: This button is used to reset the Managed Switch
while it is powered on. It serves two purposes:

Press the Reset button for 3 seconds then release to restart the
system

Press the Reset button for 10 seconds then release to reset
(back to factory settings) and restart the system. Please note
that this will clear all saved passwords and configurations.

20 100/1000 SPF ports: The SFP ports are numbered from 1 to 20.
They can operate at either 100 or 1000Mbps.

4 Gigabit combo ports: The combo ports are numbered from 21 to
24. They can operate at 10/100/1000Mbps as copper ports or
1000Mbps as SFP ports.

Copper ports designated as 10/100/1000BaseT

SFP slots designated as 1000Base-X
Please note that when either one port is in operation, the other port
is disabled. For example, if SFP link is active, the corresponding
copper port is disabled.

LED: Please refer to chapter 3.1 LED Definitions
Rear Panel
The rear panel is configured as follows:

Power input and consumption:

AC input: 100V-240V 50/60Hz

DC input: 48V

Power consumption:
6
- AC Side: 41.2W (Maximum)
- DC Side: 33.8W
Note: For BAT models, please be cautious that only DC12V Back-up Battery
can be used. The followings are the instructions of installing and
replacing back-up battery.
I. Installing Back-up Battery
Step 1. Unplug AC power.
Step 2. Connect battery positive (+) to switch positive (+).
Step 3. Connect battery negative (-) to switch negative (-).
Step 4. Plug AC power.
II.Replacing Back-up Battery
Step 1. Unplug AC power.
Step 2. Disconnect battery negative (-) from switch negative (-).
Step 3. Disconnect battery positive (+) from switch positive (+).
Step 4. Connect battery positive (+) to switch positive (+).
Step 5. Connect battery negative (-) to switch negative (-).
Step 6. Plug AC power.
.Cable Specifications
The following table contains various cable specifications for the Managed
Switch. Please make sure that you use the proper cable when connecting the
Managed Switch.
Cable Type
10Base-T
100Base-TX
1000Base-T
100BASE-FX
1000BASE-SX
1000BASE-LX
1000BASE-LH
1000BASE-ZX
Mini-GBIC
Description
UTP Category 3, 4, 5 (100 meters max.)
EIA/TIA- 568 150-ohm STP (100 meters max.)
UTP Cat. 5 (100 meters max.)
EIA/TIA-568 150-ohm STP (100 meters max.)
UTP Cat. 5e (100 meters max.)
UTP Cat. 5 (100 meters max.)
EIA/TIA-568B 150-ohm STP (100 meters max.)
Multi-mode fiber module(2km) / Single-mode fiber module
Multi-mode fiber module (550m)
Single-mode fiber module (10km)
Single-mode fiber module (30km/50km)
Single-mode fiber module (80km)
SFP Transceiver for 1000BASE-SX Multi-mode fiber module (550m)
SFP Transceiver for 1000BASE-LX Single-mode fiber module (10km)
SFP Transceiver for 1000BASE-LH Single-mode fiber module
(30km/50km)
SFP Transceiver for 1000BASE-ZX Single-mode fiber module (80km)
7
1.3 Network Management
This Managed Switch is Plug & Play compliant. Real-time operational status
can be monitored through a set of LED indicators located in the front panel. The
built-in management module also allows users to configure, control and monitor
the system remotely.
Following is a list of management options available in this Managed Switch:
 Local Console Management
 Telnet Management
 SNMP Management
 Web Management
Local Console Management
Users may connect a Terminal or PC with Terminal Emulation program, to the
Managed Switch RJ-45 port directly via RS-232 cable to configure, control and
monitor the system. This is often referred as Out-of-Band management.
Console management is useful when there is no network connection to the
Switch, for instance, configuring the Managed Switch for the first time.
Telnet Management
Telnet is done through the network. Once there is a network connection to the
Managed Switch, users can use Telnet to configure, control and monitor the
system. Using network connection to manage is often referred as
In-Band-Management.
SNMP Management
SNMP is also In-Band-Management and requires a network connection to the
Managed Switch. The Managed Switch private Management Information Bases
(MIB) is provided for SNMP-based network management program to configure,
control and monitor the system.
Web Management
Web Management is done over the network. Once the Managed Switch is
available on the network, you can login and monitor the status of it through a web
browser remotely or locally. Local console-type Web management, especially
for the first time use of the Managed Switch to set up the needed IP, can also be
done through one of the 10/100/1000Base-TX 8-pin RJ-45 ports located on the
8
front panel of the Managed Switch. Direct RJ-45 LAN cable connection between
a PC and the Managed Switch is required for this management.
Please refer to the Network Management User’s Manual for the detailed
management functions and required installation and operation procedures.
9
2. INSTALLATION
To properly install the Managed Switch, please follow the procedures listed
below. Procedures covered in this chapter are described below in separate
sections.
 Installation Requirements
 Unpacking the Managed Switch
 Installing the Managed Switch
 Powering on the Managed Switch
 Connecting the Managed Switch to the Network
2.1 Installation Requirements
Basic requirements for installation are as follows:
 Environmental conditions
 One power outlet
 Proper ventilation
 Proper isolation to electrical noise, radio, etc..
 UTP cables should not run in the same duct with power and
phone line cables
 Required SFP Transceivers or UTP cables
2.2 Checking the Package Contents
Unpack the package carefully and check the package contents. The package
should contain the following items:
 Items included in standard package
 1 Managed Switch (with a mounting bracket at right and left
side panel)
 4 rubber feet with adhesive backing
 1 Console RS-232 cable with RJ-45 connector
 1 Documentation CD
 1 Power cord
If any of the above items is found missing or damaged, please contact your local
sales representative for support or replacement.
10
2.3 Installing the Managed Switch
CAUTION
To prevent any damage or failure of the Managed Switch, please DO NOT
block the ventilation FAN holes.
Use the following guidelines when choosing a place to install the Switch:
 Firm and steady flat surface.
 The location of power outlet should not be far away from the device.
 Make sure that there is proper heat dissipation from and adequate
ventilation around the switch. Do not place heavy objects on the
Managed Switch.
 Make sure water and moisture cannot enter the case.
 Keep the cabling away from electrical noise.
Desktop Installation
The switch can be placed in any flat and steady surface with proper air
ventilation. Four rubber feet with adhesive backing are provided for installation.
Procedures:
1. Attach rubber feet on the bottom at each corner of the device.
2. Select a flat and steady surface and place the switch.
3. Allow adequate space for ventilation between the device and the
objects around it.
Rack Installation
WARNING!
Please mount the Managed Switch firmly in a rack otherwise it may fall and
cause the system to function abnormally or cause possible injuries to
network personnel.
The Managed Switch can be mounted in an EIA standard-sized, 19-inch or
10-inch equipment rack, which can be placed in a wiring closet with other
equipment. Rack mounting brackets (provided) and screws (not provided) are
needed to mount the Switch.
11
Procedures:
1. Plan the rack position. It is recommended that the heavier the switch
is, the lower it is installed in a rack or cabinet.
2. Two mounting brackets should be installed in the Managed Switch
when shipped. If they are not installed, please attach the mounting
bracket on the switch’s side panels (one on each side) and secure
them with screws.
3. Align the Switch with mounting bracket into the selected mounting rail
position
4. Then, use the screws provided with the equipment rack to mount the
switch into the selected mounting rails position carefully and firmly.
5. Please ensure that the ventilation holes are not blocked.
Figure 3. Example of Rack Installation
2.4 Powering ON
The Managed Switch can be used with AC power adapter 100-240 VAC Input
and 48VDC output. The input connector is located on the rear panel of the
Managed Switch. Before turning on the Managed Switch, please make sure that
network cables and power cables are securely connected.
Procedures:
1. Plug one end of the power cord into the power socket on the rear
panel.
2. Plug the other end of the power cord into the power outlet. After the
power is turned on, the Power LED indicator should light in green and
the FAN should spin.
12
Power Failure
In the event of power failure, unplug the power that is plugged into the switch at
the back of the device. When power is resumed, plug the power back to the
switch. Please note that the Managed Switch has no ON/OFF switch. Therefore,
the only way to power on or power off the switch is to connect or disconnect the
power cord.
2.5 Connecting the Switch to Network
Connect to Network
This Managed Switch has 20 100/1000Mbps SFP ports and 4 combo ports on
the front panel. These combo ports can be plug-in 10/100/1000Base-T copper
or slide-in 100/1000Mbps SFP Fiber transceivers. The connection of the fiber
port must be matched, i.e. Transmitter to Receiver and vice versa.
Figure 4. Example of segmenting network configuration
13
3. OPERATION
The Managed Switch is Plug & Play compliant. Real-time operational status
can be monitored through a set of LED indicators located in the front panel. A
built-in management module provides users with flexible interfaces to configure,
control and monitor the complete system remotely.
3.1 LED Definitions
Power LED A & B
LED
Color
Off
Green
Power A/B
Orange
Operation
No fixed-in power module or power is off.
Power module is in normal operation.
Fixed-in Power module is no longer receiving power or DC output
fails.
COM LED
LED
Color
Off
Green
COM
Operation
Out-of-band management via Console port is activated.
Console port is connected.
Status LED
LED
Status
Color
Operation
Press the Reset button for 3 seconds and then release to restart the
Blinking Green
system.
Press the Reset button for 10 seconds and then release to reset
Blinking Orange (back to factory settings) and restart the system. The LED indicator
will blink in orange for three times.
Port LED 1~20
LED
Color
Off
Green
Link/ACT/Speed
Orange
Blinking
Green/Orange
Operation
No connection
The link is up and the speed is in 100Mbps
The link is up and the speed is in 1000Mbps.
Traffic is present.
Charge and Discharge*
LED
Charge
Discharge
Color
Blinking Green
Steady Green
Blinking Orange
Steady Orange
Operation
Battery is charging.
Battery is fully charged.
Battery is discharging.
Reverse Positive (+) and negative (-) wires.
14
TP & F/O LED 21~24
LED
Media
Type
TP
Link/ACT/Speed
F/O
Color
Off
Green
Orange
Blinking
Green/Orange
Off
Green
Orange
Blinking
Green/Orange
Operation
No connection or the port link speed is in 10Mbps.
The link is up and the speed is in 100Mbps.
The link is up and the speed is in 1000Mbps.
Traffic is present.
No connection.
The link is up and the speed is in 100Mbps.
The link is up and the speed is in 1000Mbps.
Traffic is present.
Note:
* Charge and Discharge LED indicators are for the BAT models only.
Please be cautious of the following situations.
1. If “Discharge” LED shows steady orange, please reverse positive (+)
and negative (-) wires.
2. Reverse indication only works when AC power is unplugged.
3. Never change battery while AC Power is plugged, or the charging circuit
may be damaged.
15
4. MAINTENANCE
This Managed Switch is easy to use and maintain. The procedures are
suggested when you want to identify faults, perform hardware replacement and
firmware upgrading.
4.1 Fault Identification
Identifying faults can greatly reduce the time required to find problem and
solution. Users may perform local check or remote check to find the problems.
Local Check
Users can perform local checks by observing LED indicators status or check
system setup and configuration through console connection.

When the whole system fails to function,
 Check Power LED status
 Check Power connection
 Reset power

When certain network link fails to function,
 Locate the port of the switch
 Check LINK/ACT/Speed LED of the port
 Check Status LED of the port
 Check cable connection between the port and the connected device
 Reset power

When local Console fails to function,
 Check COM LED status
 Check Console port connection
 Check Console configuration
 Reset power
Remote Check
Users may check the Managed Switch through SNMP manager remotely. For
detailed procedures, please refer to the Network Management User’s Manual.
16
4.2 Hardware Replacement Procedures
WARNING!
The Managed Switch contains no user-serviceable parts. DO NOT, UNDER
ANY CIRCUMSTANCES, open and attempt to repair it.
Failure to observe this warning could result in personal injury or death
from electrical shock.
Failure to observe the above warning will immediately void any Warranty.
4.3 Firmware Upgrade
This Managed Switch may perform firmware upgrading when required. New
firmware can be obtained from your sales representative. For detailed upgrading
procedures, please refer to the Network Management User’s Manual.
17
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