CTS EPS-3128 Series User manual

EPS-3128 Series
28-port L2+ Managed Ethernet PoE Switch
User’s Guide
Version: 1.0

ii
Revision History
Version
Date
Changes
0.90
01/24/2016
First release
1.0
11/27/2018
Use new template, modify Status LED description, and
add the description, including new features, the RESET
button about the supplier default as well as CTS
branches’ contact information.
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 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 this user’s guide, 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 their own expense.
CE Mark Warning
This is a Class A product. In a domestic environment, this product may cause radio interference in
which case the user may be required to take adequate measures.
Trademarks
CTS is a registered trademark of Connection Technology Systems Inc
All trademarks belong to their respective proprietors.
Contents subject to change without prior notice.
Copyright Statement
Connection Technology Systems Inc Copyright © 1998-2018
This publication may not be reproduced as a whole or in part, in any way whatsoever unless prior
consent has been obtained from Connection Technology Systems Inc.

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CTS Contact Information
▓Headquarter/Manufacturer:
Connection Technology Systems Inc.
18F-6, No.79, Sec.1, Xintai 5th Rd.,
XiZhi Dist., New Taipei City 221, Taiwan(R.O.C)
Tel: [phone]
Fax: [phone]
Dir.Line:[phone]
www.ctsystem.com
▓Global Authorized Representatives:
Connection Technology USAInc.
40538 La Purissima Way, Fremont, CA 94539, USA
Tel: [phone]
Sales Direct Line: [phone]
E-mail:[email protected]
Connection Technology Systems Japan
Higobashi Bldg, No3 R201, 1-23-13, Edobori, Nisi-ku,
Osaka 550-0002, Japan
Tel: [phone]
E-mail: [email protected]
Connection Technology Systems NE AB
August Barks Gata 21,
421 32 Västra Frölunda, Sweden
Tel: [phone]
E-mail: [email protected]
COMPONET Handels GmbH
Hirschstettner Straße 19-21/Stiege I
A-1220 Wien, Austria
Tel: [phone]
E-mail: [email protected]

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Table of Contents
Revision History .......................................................................................ii
CTS CONTACT INFORMATION .....................................................................III
TABLE OF CONTENTS ..............................................................................IV
CHAPTER 1. INTRODUCTION ...................................................................... 2
1.1 OVERVIEW OF EPS-3128 ...................................................................... 2
1.2 KEY FEATURES .................................................................................. 3
1.3 FRONT &REAR PANELS......................................................................... 5
1.3.1 Front Panel............................................................................... 5
1.3.2 Rear Panel ............................................................................... 6
1.4 LED DEFINITIONS ............................................................................... 7
1.5 CABLE SPECIFICATIONS ........................................................................10
CHAPTER 2. INSTALLATION ......................................................................11
2.1 INSTALLATION REQUIREMENTS .................................................................12
2.2 CHECKING THE PACKAGE CONTENTS ..........................................................12
2.3 INSTALLING THE MANAGED SWITCH ............................................................13
2.3.1 Desktop Installation....................................................................13
2.3.2 Rack Installation .......................................................................14
2.3.2.1 Install EPS-3128 Switch in a Rack.............................................14
2.3.3 Grounding the Managed PoE Gigabit Ethernet Switch ...........................15
2.4 POWERING ON THE MANAGED SWITCH.........................................................16
2.5 CONNECTING THE MANAGED SWITCH TO THE NETWORK ......................................16
2.6 INSTALLING AND REMOVING SFP MODULES ...................................................16
2.6.1 Installing SFP Modules ................................................................16
2.6.2 Removing SFP Modules...............................................................17
2.7 CONNECTING THE SWITCH TO CONSOLE PORT ................................................17
CHAPTER 3. OPERATION..........................................................................18
3.1 NETWORK MANAGEMENT .......................................................................18
CHAPTER 4. MAINTENANCE ......................................................................20
4.1 FAULT IDENTIFICATION .........................................................................20
4.1.1 Local Check ............................................................................20
4.1.2 Remote Check..........................................................................21
4.2 HARDWARE REPLACEMENT PROCEDURES .....................................................21
4.3 FIRMWARE UPGRADE...........................................................................21

Publication date: Nov. 27, 2018
Revision 1.0 1
About this manual
In this user’s guide, it will not only clearly introduce CTS EPS-3128 Managed Switch but tell you
how to install this Managed Switch with detailed instructions.
Organization of the Manual
Chapter 1 “Introduction” describes the features of the Managed Switch
Chapter 2 “Installing the Managed Switch”
Chapter 3 “Operation”
Chapter 4 “Maintenance”

Introduction
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Revision 1.0
2
1
Introduction
CTS’s Managed Switch is designed to meet the emerging FTTX & Metro Ethernet requirements. Its
low profile appearance with 1U height and the standard rack-mounted size achieve the highest
density within a single rack. When massive fiber ports need to be deployed, the Managed Switch
provides the best performance and price ratio.
1.1 Overview of EPS-3128
EPS-3128, a 19-inch and rack mountable Managed PoE Ethernet Switch, has 24 10/100/1000Base-
T up to 30W PoE ports + 4 combo uplink ports (10/100/1000Base-T and 100/1000Base-X SFP) in
the front panel. This Managed Switch provides high performance, store and forward switching
capability plus other advanced features such as QoS, VLAN, Spanning Tree, LACP and so on.
LED indicators located on the front panel ease the users’ effort to monitor and manage the 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 a typical SFP solution to Metro Ethernet application. Besides, it can be
used as a stand-alone switch. With the height of 1U and the standard-size rack design in
appearance, EPS-3128 can be used in closet wiring as well.

Introduction
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Revision 1.0 3
1.2 Key Features
19 inch, 1U high
24 x 10/100/1000Base-T ports, Max.30W PoE/PSE
- IEEE 802.3/802.3u/802.3ab compliance
- Support Auto-Negotiation
- Support MDI/MDIX/Auto-Crossover
- RJ-45 Slot
- Support IEEE802.3af Power over Ethernet
- Support IEEE802.3at Power over Ethernet Enhancements
4 x 10/100/1000Base-T, 100/1000Base-X Combo ports
- IEEE 802.3ab/802.3z compliance
- Support Auto-Negotiation (RJ-45) and Auto-Sensing (SFP)
- Support MDI/MDIX/Auto-Crossover(RJ-45)
- RJ-45 or SFP Slot
Switching Features
- Store & forward switching
- Non-blocking switching fabric: 56Gbps
- Mac address table:16K
- Memory buffer total 1536K bytes
- VLANs support up to 2K VLAN Groups
- Support jumbo frame on all ports up to 9K bytes size
- QoS classification based on IEEE802.1p, TOS/DSCP
- 802.1Q Tunneling (QinQ)
- Rate limit control
- SNTP time server
- Static multicasting
- IGMP v1/v2/v3 snooping
- IGMP fast leave
- IGMP filtering via filtering profile
- Multicast channel limitations per port
- DHCP snooping
- DHCP client and auto-provision
- DHCP relay agent with option 82
- Access Control List (ACL)
- Rapid Spanning Tree Protocol (RSTP)
- Link Layer Discovery Protocol (LLDP)
- IEEE 802.1X Authentication
- RADIUS Authentication for 802.1X
- IPv6 over Ethernet
- IPv6 Addressing Architecture
- IPv6 Dual Stack
- PoE Power Output: 30W max. (Per PoE port)

Introduction
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- Maximum PoE Power Budget :
For 480W model: 480Watts at 40°C, 420Watts at 50°C
For 240W model: 240Watts at 40°C, 210Watts at 50°C
- Time Range for PoE
- L2PT (Layer 2 Protocol Tunneling)
- VLAN Translation
- Proprietary Fast Ring v2 (<50ms) and Chain (<1 second) redundancy protocols for
fast redundancy after encountering connection issues
Management Functions
- Console
- Telnet/CLI
- Web
- RADIUS authentication
-SNMP v1/v2 and network management
-SNMP Power-Down Trap
-Private, RFC-1213, RMON MIBs
-Port mirroring
- FTP, TFTP, HTTP server and client firmware upgrade
- RADIUS Client for Web, CLI for authentication
- TACACS+ for authentication
Operation Environment
- Operating Temperature: 0ºC~50ºC

Introduction
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Revision 1.0 5
1.3 Front & Rear Panels
1.3.1 Front Panel
The interfaces on the front panel of the Managed Switch are described below:
1. 24 x 10/100/1000Base-T RJ-45 ports (Ports 1-24)
2. 4 x Gigabit combo ports (Ports 25-28):
4 x 10/100/1000Base-T RJ-45 ports, or
4 x 100/1000Base-X SFP ports
3. Reset Button:
Press the reset button for 5~13 seconds, then release it to restart the system.
Press the reset button for 13~20 seconds, then release it to reset the Managed
Switch. The settings will be reset to the supplier defaults and restart the system.
Press the reset button for more than 20 seconds, then release it to reset the
Managed Switch. The settings will be back to the factory defaults and restart the
system.
4. Console Port:
An asynchronous serial console port supports the RS-232 electrical specification.
The console port can be used to manage the device, and the serial console port
settings should be configured as 9600, 8, n, 1.
5. LEDs:
Includes Power LED, Status LED, COM LED, Speed/Link/Act LEDs of TP 1~24
ports, PoE LEDs of 1~24 ports and LEDs of TP & Fiber 25~28 ports. For more
details on LEDs description, please refer to Section 1.4 LED Definitions.
1
2
3
5
4
1
2
5
Figure 1-1. Front Panel of EPS-3128 Managed Switch
5

Introduction
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1.3.2 Rear Panel
The Managed Switch provides one fixed AC input power module.
The interface on the rear panel of the Managed Switch is described below:
6. AC Inlet
AC power connection: 100-240V, 50/60Hz
7. Power Switch:
Power on/off EPS-3128 Managed Switch.
8. Ground Screw (For more information, please refer to Section 2.3.3)
Figure 1-2. Rear Panel of EPS-3128 Managed Switch
6
7
8

Introduction
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1.4 LED Definitions
The Managed Switch is Plug & Play compliant. The real-time operational status can be monitored
through a set of LED indicators located in the front panel.
Power LED
The power status of the Managed Switch is indicated by the Power LED on the front panel of the
device.
LED
Color
Operation
Power
OFF
No fixed-in power module exists or power is off.
Green
Lit when power module is in normal operation.
Status LED
The Managed Switch status is indicated by the Status LED on the front panel of the device.
LED
Color
Operation
Status
Green
Lit when the device is in normal operation.
Orange
Lit when the device is booting up or press the Reset
button for 5~13 seconds. And then release the Reset
button, the LED indicator will continuously blink in
orange green color by turns for 3 seconds and
restart the system.
Figure 1-3. LEDs of EPS-3128 Managed Switch

Introduction
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Revision 1.0
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Slowly blinking when you press the Reset button for
13~20 seconds. And then release the Reset button,
the LED indicator will continuously blink in orange
green color by turns until the system is reset to default
(return to supplier default settings) and restart the
system.
Rapidly blinking when you press the Reset button for
more than 20 seconds.And then release the Reset
button, the LED indicator will continuously blink in
orange green color by turns until the system is reset
to default (return to factory default settings) and restart
the system.
COM LED
The console status is indicated by the COM LED on the front panel of the device.
LED
Color
Operation
COM
OFF
Either the console port is not activated or no session
exists.
Green
Lit when the console port is activated and the session
exists.
TP 1~24 Port LEDs
LED
Color
Operation
Speed/
Link/ACT
OFF
No connection exists.
Green
Lit when the 10/100Mbps port link is up.
Blinking when TP port is receiving and transmitting data
at the speed of 10/100Mbps.
Orange
Lit when the 1000Mbps port link is up.
Blinking when TP port is receiving and transmitting data
at the speed of 1000Mbps.
PoE
OFF
PoE is disabled or no power is supplied with the PD
when PoE is enabled.
Green
Lit when PoE is enabled and starts supplying the
power.
Blinking when PoE works abnormally.

Introduction
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Revision 1.0 9
TP & F/O 25~28 Port LEDs
LED
Media
Type
Color
Operation
Speed/
Link/ACT/
TP
OFF
No connection exists.
Green
Lit when the 10/100Mbps port link is up.
Blinking when TP port is receiving and
transmitting data at the speed of 10/100Mbps.
Orange
Lit when the 1000Mbps port link is up.
Blinking when TP port is receiving and
transmitting data at the speed of 1000Mbps.
F/O
OFF
No connection exists.
Green
Lit when the 100Mbps port link is up.
Blinking when Fiber port is receiving and
transmitting data at the speed of 100Mbps.
Orange
Lit when the 1000Mbps port link is up.
Blinking when Fiber port is receiving and
transmitting data at the speed of 1000Mbps.

Introduction
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1.5 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
Description
10Base-T
UTP Category 3, 4, 5 (100 meters max.)
EIA/TIA- 568 150-ohm STP (100 meters max.)
100Base-TX
UTP Cat. 5 (100 meters max.)
EIA/TIA-568 150-ohm STP (100 meters max.)
1000Base-T
UTP Cat. 5e (100 meters max.)
UTP Cat. 5 (100 meters max.)
EIA/TIA-568B 150-ohm STP (100 meters max.)
100BASE-FX
Multi-mode fiber module(2km) / Single-mode fiber
module
1000BASE-SX
Multi-mode fiber module (550m)
1000BASE-LX
Single-mode fiber module (10km)
1000BASE-LH
Single-mode fiber module (30km/50km)
1000BASE-ZX
Single-mode fiber module (80km)
SFP Transceiver
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)

Installation
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Revision 1.0 11
2
Installation
To properly install the EPS-3128 Managed Switch, please follow the procedures listed below. These
procedures will be respectively described in detail in the following sections.
Installation Requirements
Checking the Package Contents
Installing the Managed Switch
Powering on the Managed Switch
Connecting the Managed Switch to the Network

Installation
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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 Transceiver or UTP cables
Rack mounting tools
2.2 Checking the Package Contents
Unpack the package carefully and check the package contents. The package should contain the
following items:
One set of the Managed Switch
19-inch rack-mount kit (Fixed in the Managed Switch when shipped)
Four rubber feet with adhesive backing
Console RS-232 cable with RJ-45 connector
Documentation CD
AC power cord
If any item is found missing or damaged, please contact your local sales representative for support
or replacement.

Installation
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Revision 1.0 13
2.3 Installing the Managed Switch
You can install the EPS-3128 switch on a flat surface or mount it in a standard 19-inch network
equipment rack.
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.
Proper power outlet location, not too far from the device.
Visually inspect the power cord and see that it is secured to the AC power connector.
Make sure that there is proper heat dissipation from and adequate ventilation around the
switch. Do not place heavy objects on the Managed Switch.
2.3.1 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 this kind of installation.
Procedures
➊Attach rubber feet on the bottom at each corner of the device.
➋Select a flat and steady surface to place the switch.
➌Allow adequate space for ventilation between the device and the objects around it.

Installation
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2.3.2 Rack Installation
In the following section, we will take the EPS-3128 Managed Switch for example to install a 19-inch
switch in a standard 19-inch network equipment rack.
WARNING!
Please mount the Switch firmly in rack, otherwise it may fall and cause the
system damage and possible injury to personnel.
2.3.2.1 Install EPS-3128 Switch in a Rack
The Managed Switch can be mounted in an EIA standard-sized, 19-inch rack, which can be placed
in a wiring closet with other equipment. Rack mounting brackets are provided to mount the Switch.
Just follow the procedures listed below for step-by-step instructions to install your switch in this rack
space:
Step 1. Plan the rack position.
Step 2. Align the mounting holes in the brackets with the desired holes in the rack, and insert
screws through each bracket and into the rack. (See Figure 2-1)
Step 3. Then, tighten the screws with the screwdriver to secure mounting brackets to the rack.
Step 4. Please ensure that the ventilation holes are not blocked.
Figure 2-1. EPS-3128 Switch Rack-mounting

Installation
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2.3.3 Grounding the Managed PoE Gigabit Ethernet Switch
Grounding helps to limit the effects of noise due to electromagnetic interference (EMI). Be sure to
install the ground connection from the ground screw to the grounding surface before connecting
devices.
Figure 2-2 Grounding Wiring for EPS-3128

Installation
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2.4 Powering on the Managed Switch
The Managed Switch can be used with AC power supply 100-240V, 50–60Hz. After the Managed
Switch is turned on, the Power LED indicators should light in green color and the FAN should spin.
For more details about the power LED description, please refer to Section 1.4 LED Definitions.
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.
2.5 Connecting the Managed Switch to the
Network
Connect to Network
The Managed Switch has 24 TP ports and 4 combo ports in the front panel. These 24 TP ports can
be plugged with 10/100/1000Base-T UTP cable. Uplink combo ports 25-28 can be plugged with
100Base-FX, 1000Base-X SFP Fiber transceiver or 10/100/1000Base-T UTP cable. The connection
of the fiber port must be matched, i.e. Transmitter to Receiver, and vice versa.
2.6 Installing and Removing SFP Modules
2.6.1 Installing SFP Modules
To connect the fiber transceiver and LC cable, use the following guidelines:
1. Position the SFP transceiver with the handle on top.
2. Locate the triangular marking in the slot and align it with the bottom of thetransceiver.
3. Insert the SFP transceiver into the slot until it clicks intoplace.
4. Make sure the module is seated correctly before sliding the module into the slot. A click
sounds when it is locked in place.
Note: If you are attaching fiber optic cables to the transceiver, continue with the following step. Otherwise,
repeat the previous steps to install the remaining SFP transceivers in the device.
1. Remove the protective plug from the SFP transceiver.
Note: Do not remove the dust plug from the transceiver if you are not installing the fiber optic cable at this
time. The dust plug protects hardware from dust contamination.
2. Insert the fiber cable into the transceiver. The connector snaps into place andlocks.
3. Repeat the previous procedures to install any additional SFP transceivers in the switch. The
fiber port is now set up.