KTI Networks KGS-2423 User manual

KGS-2423
Managed 24-Port Stackable Gigabit Ethernet Switches
with 4 SFP Slots
Installation Guide
DOC.120405
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(C) 2012 KTI Networks Inc. All rights reserved. No part of this documentation may be reproduced in any form
or by any means or used to make any directive work (such as translation or transformation) without permission
from KTI Networks Inc.
KTI Networks Inc. reserves the right to revise this documentation and to make changes in content from time to
time without obligation on the part of KTI Networks Inc. to provide notification of such revision or change.
For more information, contact:
United States KTI Networks Inc.
P.O. BOX 631008
Houston, Texas 77263-1008
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
URL: http://www.ktinet.com/
International Fax: [phone]
E-mail: [email protected]
URL: http://www.ktinet.com.tw/
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The information contained in this document is subject to change without prior notice.
Copyright (C) All Rights Reserved.
TRADEMARKS
Ethernet is a registered trademark of Xerox Corp.
FCC NOTICE
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 the interference that may cause undesired operation.
CE NOTICE
Marking by the symbol indicates compliance of this equipment to the EMC directive of the European
Community. Such marking is indicative that this equipment meets or exceeds the following technical
standards:
EMC Class A
EN55022:2006/A1:2007
EN61000-3-2:2006
EN61000-3-3:1995/A1:2001/A2:2005 Class A
EN 55024:1998/A1:2001/A2:2003
IEC 61000-4-2:2001
IEC 61000-4-3:2002/A1:2002
IEC 61000-4-4:2004
IEC 61000-4-5:2001
IEC 61000-4-6:2003
IEC 61000-4-8:2001
IEC 61000-4-11:2001
VCCI-A Notice
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Table of Contents
1. Introduction......................................................................................................................................................6
1.1 Features.................................................................................................................................7
1.2 Product Panels....................................................................................................................... 9
1.3 LED Indicators .....................................................................................................................10
1.4 Specifications.......................................................................................................................10
2. Installation......................................................................................................................................................13
2.1 Unpacking............................................................................................................................13
2.2 Safety Cautions.................................................................................................................... 13
2.3 Mounting the Switch............................................................................................................. 14
2.4 Applying AC Power Supply.................................................................................................. 15
2.5 Applying DC Power Supply.................................................................................................. 15
2.6 Reset Button ........................................................................................................................ 16
2.7 Making UTP Connections ....................................................................................................17
2.8 Making Fiber Connection.....................................................................................................17
2.9 Using Power over Ethernet..................................................................................................19
2.9.1 Applying PoE DC IN power............................................................................................... 19
2.9.2 PoE Power Output ............................................................................................................20
2.9.3 Protection Mechanism ......................................................................................................20
2.10 Making Stack Connection .................................................................................................. 21
2.11 LED Indication.................................................................................................................... 23
2.12 Making Console Connection..............................................................................................24
3. Managing the Switch Stack..........................................................................................................................25
3.1 Stack Configuration.............................................................................................................. 25
3.1.1 Stack Configuration via Web Interface.............................................................................. 25
3.1.2 Assigning Switch ID.......................................................................................................... 27
3.1.3 Master Switch Election in a Stack..................................................................................... 29
3.1.4 Stack Configuration via Telnet Interface...........................................................................30
3.2 IP Configuration for Stack....................................................................................................31
3.3 IPv6 Configuration for Stack ................................................................................................ 33

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3.4 Configuring IP Address via console and telnet .................................................................... 34
3.5 Reference Manuals for Web, Console, Telnet Management............................................... 35
3.6 Configuration for SNMP Management................................................................................. 35
3.7 SNMP MIBs ......................................................................................................................... 37

1. Introduction
The managed 24-port Stackable Gigabit Ethernet Switches are standard L2 switches that meets all IEEE
802.3/u/x/z Gigabit, Fast Ethernet specifications. The switch has 20 10/100/1000Mbps copper ports and 4
combo ports with four additional Gigabit SFP slots. The SFP slots support standard SFP fiber optical
transceivers for fiber optic application.
To expand the number of the connected users, the switch provides two 5G stack ports for cascading more than
one switch together. Up to five switches are allowed to cascade as one single switch stack that is able to
support 120 users and 20 fiber connections. The stack can also be managed with a single IP address and as a
single entity for greater management simplicity. For more and more Power over Ethernet applications, the
switch provides optional PoE function on all copper ports. With PoE function, the ports can deliver power to
the connected powered devices over Cat.5.
The switches support Telnet CLI, Web GUI, SNMP and console CLI interface for switch stack management.
The network administrator can logon the switch to monitor and configure port operating mode, Quality of
Service, and powerful L2 switching functions such as VLAN, IGMP, RSTP etc. In addition, the switches are
also featured with powerful security functions such as SSH, HTTPS, IEEE 802.1x & MAC-based
authentication, and ACL control to make them suitable for office core applications.
The switch is featured with the following switched ports and advantages in a 1U rack box:
20 10/100/1000Mbps Gigabit copper ports
4 combo ports - 10/100/1000Mbps copper & 1000Base-X SFP
2 stack ports
Model Definition
Model Description PoE+ Featured Power Input
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KGS-2423-S AC powered model - AC 100 ~ 240V
KGS-2423-PS AC powered model with PoE √AC 100 ~ 240V
KGS-2423-D DC powered model - DC +40 ~ 72V
KGS-2423-PD DC powered model with PoE √DC +40 ~ 72V
1.1 Features
zProvides 24 10/100/1000Mbps RJ-45 and four Gigabit SFP slots (4 combo ports)
zProvides optional 24 802.3af and 802.3at compliant PoE/PoE+ PSE ports
zProvides two 5G stack ports for stacking multiple switches and single point of management
zAll copper ports support auto-negotiation and auto-MDI/MDI-X detection
zThe SFP slots support 1000BASE-X SFP transceivers
zSupports Gigabit full wire speed forwarding
zSupports power saving mode when port link down or different RJ-45 cable length.
zSupports 802.3x flow control for full-duplex and backpressure for half-duplex
zSupports console and in-band Web/Telnet/SSH/HTTPS/SNMP/CLI interfaces for stack switch
management with single IP
zSupports configurable maximum frame length from 1518 up to 9600 jumbo frame
zSupports port-based ,802.1Q tag-based VLAN and private VLAN
zProvides QoS function
zSupports port bandwidth control for ingress and egress
zSupports packets storm control function for broadcast, unicast and multicast
zSupports MAC address learning, ageing and filtering control
zSupports static and LACP port link aggregation
zSupports IEEE 802.1d, 802.1w, 802.1s STP (Spanning Tree Protocol), RSTP, MSTP
zProvides port mirroring function
zProvides IP Multicasting with IGMP Snooping function
zSupports DHCP client for dynamic IP configuration
zSupports 802.1X port-based radius authentication for access security
zProvides ACL filtering function
zProvides port data rate control function
zSupports SNTP Client
zSupports LLDP

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zProvides SNMP v1/v2C/v3 agent and event trap function
zSupports Configuration download and upload
zSupports SFP with Digital Diagnostic Monitoring DDM support
zSupports Green Ethernet power saving
zBoth AC powered model and DC powered model are available for choice
Management Features:
zPort Control
-Port Speed/Duplex Mode/Flow Control/Power saving configuration
-Port frame size control (Jumbo frame support)
zQoS
-Traffic Classification up to 4 active priorities
-Port QoS configuration
-QoS Control List for policy rules
-Port bandwidth control for ingress and egress
-Storm Control for UC, MC and BC
zLayer2
-Auto MAC address learning and ageing
-Static MAC address filtering
-Port-based and 802.1Q Tag-based VLAN
-Link Aggregation - LACP
-Rapid Spanning tree - RSTP
-Port Mirroring
-IGMP snooping
-DHCP client for IP configuration
zSecurity features
-Access Control List for L2/L3 protocol filtering, ingress rate limit, port copy
-Port Access Control based on IEEE 802.1X
zManagement
-Web management
-Console CLI
-Telnet CLI
-Software Download via Web
-SNTP Client
-SNMP v1/v2c Agent
-SSH v2 & HTTPS

-Restore to default configuration
-Configuration download and upload
-System syslog
zSNMP MIBs
1.2 Product Panels
The following figure illustrates the front panel and rear panel of the switch:
Front panel
Rear panel
AC powered model
AC powered model with PoE
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DC powered model
DC powered model with PoE
1.3 LED Indicators
LED Function
POWER Power status
Mngt Management status
SA, SB Stack port status
1000M Port speed 1000Mbps status and PoE status (Port 1 – Port 24)
Link/Act. Port link and activity status (Port 1 – Port 24)
F21 – F24 SFP Fiber is selected on Port 21 – Port 24
1.4 Specifications
10/100/1000 Copper Ports
Compliance IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX, IEEE 802.3u 1000Base-T
Connectors Shielded RJ-45 jacks
Pin assignments Auto MDI/MDI-X detection
Configuration Auto-negotiation or software control
Transmission rate 10Mbps, 100Mbps, 1000Mbps
Duplex support Full/Half duplex
Network cable Cat.5 UTP
Power over Ethernet PoE+ PSE port
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Combo Ports (Port 21 ~ Port 24) with 10/100/1000 RJ-45 and 1000Mbps SFP
10/100/1000 Copper Port Interface
Same as above 10/100/1000 Copper Ports
Fiber interface
Compliance IEEE 802.3z 1000Base-SX/LX (mini-GBIC)
Connectors SFP slot for optional SFP type fiber transceivers
Configuration Auto/Forced, 1000Mbps, Full duplex
Transmission rate 1000Mbps
DDM support Yes
Network cables MMF 50/125 60/125, SMF 9/125
Eye safety IEC 825 compliant
Console Port
Interface RS-232, DTE type
Connector 9-pin D-sub
Switch Functions
MAC Addresses Table 8K entries
Forwarding & filtering Non-blocking, full wire speed
Switching technology Store and forward
Maximum packet length 9600 bytes (Jumbo frame support)
Flow control IEEE 802.3x pause frame base for full duplex operation
Back pressure for half duplex operation
VLAN function Port-based VLAN and IEEE 802.1Q Tag-based VLAN
VLAN support 4096 VLANs (IEEE 802.1Q)
Aggregation Static and LACP Port link aggregation (port trunking)
QoS function Ethernet type, IP-based, DSCP, TOS-based, VID-based, VLAN Tag-based packet
classification
Port rate control, storm control
Port Mirroring Mirror received frames to a sniffer port
AC Power Input (AC powered models)
Interfaces IEC320 receptacle
Operating Input Voltages 100 ~ 240VAC
Power Consumption 39W max. (PoE power is excluded)

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DC Power Input (DC powered models)
Interfaces Screw-type terminal block
Operating Input Voltages +40 ~ +72VDC
Power Consumption 39W max. (PoE power is excluded)
PoE DC Power Input (PoE featured models)
Interfaces Screw-type terminal block
Operating Input Voltages +45 ~ +57VDC
Mechanical
Dimension (base) 443 x 245 x 43 mm (WxDxH)
Housing Enclosed metal
Mounting Desktop mounting, 19” rack mounting
Environmental
Operating Temperature Typical -5oC ~ +40oC
Storage Temperature -20oC ~ +85oC
Relative Humidity 10% ~ 90% non-condensing
Electrical Approvals
FCC Part 15 rule Class A
CE EMC, CISPR22 Class A
Safety TUV LVD, TUV IEC60950-1, TUV EN60950-1
VCCI V-3 V-4 Class A

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2. Installation
2.1 Unpacking
The product package contains:
zThe switch unit
zOne AC power cord (AC powered Model)
zOne 19” rack mounting kit
zOne product CD-ROM
2.2 Safety Cautions
To reduce the risk of bodily injury, electrical shock, fire and damage to the product, observe the following
precautions.
zDo not service any product except as explained in your system documentation.
zOpening or removing covers may expose you to electrical shock.
zOnly a trained service technician should service components inside these compartments.
zIf any of the following conditions occur, unplug the product from the electrical outlet and replace the part
or contact your trained service provider:
- The power cable, extension cable, or plug is damaged.
- An object has fallen into the product.
- The product has been exposed to water.
- The product has been dropped or damaged.
- The product does not operate correctly when you follow the operating instructions.
zDo not push any objects into the openings of your system. Doing so can cause fire or electric shock by
shorting out interior components.
zOperate the product only from the type of external power source indicated on the electrical ratings label. If
you are not sure of the type of power source required, consult your service provider or local power
company.

2.3 Mounting the Switch
Desktop Mounting
The switch can be mounted on a desktop or shelf. Make sure that there is proper heat dissipation from and
adequate ventilation around the device. Do not place heavy objects on the device.
Rack Mounting
Two 19-inch rack mounting brackets are supplied with the switch for 19-inch rack mounting.
The steps to mount the switch onto a 19-inch rack are:
1. Turn the power to the switch off.
2. Install two brackets with supplied screws onto the switch as shown in figure below.
2. Mount the switch onto 19-inch rack with rack screws securely.
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3. Turn the power to the switch on.
2.4 Applying AC Power Supply
If the purchased switch is with AC power input, one AC power cord which meets the specification of your
country of origin was supplied in package. Before installing AC power cord to the switch, make sure the AC
power is OFF and the AC power to the power cord is turned off.
AC power input specifications
Connector: IEC320 type
Power Rating: 100 ~ 240VAC, 50/60Hz
Voltage Range: 90 ~ 264VAC
Frequency: 47 ~ 63 Hz
Power Consumption: 39W max. (PoE power is excluded)
2.5 Applying DC Power Supply
If the purchased switch is with DC power input, the power connector is shown below:
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DC power input specifications
Receptacle: Screw-type terminal block
Operating Voltages: +40 ~ +72VDC
Power Consumption: 39W max. @48VDC (PoE power is excluded)
Contacts
Vdc+ input
Vdc- input
Protective earth
** Important Notice
For safety, a readily accessible disconnected device (breaker) shall be incorporated external to the equipment.
2.6 Reset Button
The reset button is used to perform a reset to the switch. It is not used in normal cases and can be used for
diagnostic purpose. If any network hanging problem is suspected, it is useful to push the button to reset the
switch without turning off the power. Check whether the network is recovered.
The button can also be used to restore the software configuration settings to factory default values. The
operations are:
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Operation Function
Press the button during system boot-up and release Restore factory default settings
it after boot-up. The boot-up takes about 17 seconds (only applicable to the master unit)
and ends with LED diagnostics.
Press the button and release during switch operation Re-boot the switch unit
2.7 Making UTP Connections
The 10/100/1000 RJ-45 copper ports support the following connection types and distances:
Network Cables
10BASE-T: 2-pair UTP Cat. 3, 4, 5, EIA/TIA-568B 100-ohm
100BASE-TX: 2-pair UTP Cat. 5, EIA/TIA-568B 100-ohm
1000BASE-T: 4-pair UTP Cat. 5 or higher (Cat.5e is recommended), EIA/TIA-568B 100-ohm
Link distance: Up to 100 meters
Auto MDI/MDI-X Function
This function allows the port to auto-detect the twisted-pair signals and adapts itself to form a valid MDI to
MDI-X connection with the remote connected device automatically. No matter a straight through cable or
crossover cable are connected, the ports can sense the receiving pair automatically and configure themselves to
match the rule for MDI to MDI-X connection. It simplifies the cable installation.
Auto-negotiation Function
The ports are featured with auto-negotiation function and full capability to support connection to any Ethernet
devices. The port performs a negotiation process for the speed and duplex configuration with the connected
device automatically when each time a link is being established. If the connected device is also
auto-negotiation capable, both devices will come out the best configuration after negotiation process. If the
connected device is incapable in auto-negotiation, the switch will sense the speed and use half duplex for the
connection.
Port Configuration Management
For making proper connection to an auto-negotiation INCAPABLE device, it is suggested to use port control
function via software management to set forced mode and specify speed and duplex mode which match the
configuration used by the connected device.
2.8 Making Fiber Connection
The SFP slot must be installed with an SFP fiber transceiver for making fiber connection. Your switch may

come with some SFP transceivers pre-installed when it was shipped.
Installing SFP Fiber Transceiver
To install an SFP fiber transceiver into SFP slot, the steps are:
1. Turn off the power to the switch.
2. Insert the SFP fiber transceiver into the SFP slot. Normally, a bail is provided for every SFP transceiver.
Hold the bail and make insertion.
3. Until the SFP transceiver is seated securely in the slot, place the bail in lock position.
Connecting Fiber Cables
LC connectors are commonly equipped on most SFP transceiver modules. Identify TX and RX connector
before making cable connection.
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The following figure illustrates a connection example between two fiber ports:
Make sure the Rx-to-Tx connection rule is followed on the both ends of the fiber cable.
Network Cables
Multimode (MMF) - 50/125μm, 62.5/125 μm
Single mode (SMF) - 9/125 μm
Fiber Port Configuration
For 1000M fiber application on Port 21, 22, 23, and 24, just leave the default port configuration Auto for fiber
connection.
2.9 Using Power over Ethernet
The PoE featured switch models can deliver PoE power via the UTP connection over all copper ports. They
require an external DC power input dedicated for PoE connections.
2.9.1 Applying PoE DC IN power
The PoE DC IN interface is shown below:
PoE DC power input specifications
Receptacle: Screw-type terminal block
IEEE 802.3af compliant (PoE) operating voltage Vpoe: +45 ~ +57VDC
IEEE 802.3at compliant (PoE+) operating voltage Vpoe: +51 ~ +57VDC
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Remark: IEEE 802.3af standard is often abbreviated as “PoE”. IEEE 802.3at PoE standard is also known as
“PoE+” or “PoE plus”.
PoE DC IN Contacts
Vpoe+ input
Vpoe- input
Chassis ground for connecting earth
2.9.2 PoE Power Output
PoE power on Port RJ-45 jack
Pin 4,5 Vpoe+ pins
Pin 7,8 Vpoe- pins
Cable Cat.5 or better
Distance 100 meters max.
PoE Class Individual Rating
Standard Class Power output max. Max. current Limit
PoE Type 1 Class 0 15.4W 338mA Vpoe@48VDC 425mA
PoE Type 1 Class 1 4W 94mA Vpoe@48VDC 425mA
PoE Type 1 Class 2 7W 150mA Vpoe@48VDC 425mA
PoE Type 1 Class 3 15.4W 338mA Vpoe@48VDC 425mA
PoE+ Type 2 Class 4 30W 562mA Vpoe@54VDC 850mA
The maximum total of PoE power
Standard PoE Class Voltages Power max. Total (24 ports)
PoE Class 0 ~ 3 +45 ~ +57VDC 15.4W 15.4 x 24 = 370W
PoE+ Class 4 +51 ~ +57VDC 30W 30 x 24 = 720W
2.9.3 Protection Mechanism
Event Action
Incompliant PD discovery PoE Shut down
PD disconnection PoE Shut down immediately
Over voltage PoE Shut down immediately
Under voltage PoE Shut down immediately
PD over load *1PoE Shut down
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