Appendix I Panel Views and Descriptions .................................... 22
Appendix II Specifications.............................................................. 25
Technical Support in English version................................................. TS-1
Warranty Card in English version ............................................................. I
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Compex 24-Port + 1 Expansion Slot Switch
1. Introduction
Quick Install Guide
SAS2224B
Figure 1.1 Compex SAS2224B
Compex SAS2224B is a Fast Ethernet switch that provides 24 10/100Mbps ports capable of
delivering full/half duplex transmission with flow control. SAS2224B provides an expandable
slot using 100Mbps fiber optic module. Advanced features like Virtual LANs and port priority
are configurable through the console port. SAS2224B also allows network administrators to
control the traffic bandwidth of each port on the switch. With full auto negotiation function for
the switch operational mode, coupled with large switching backplane capacity, the Compex
SAS2224B is the cost-effective solution for expanding your network.
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1.1. Packaging Content
Thank you for purchasing Compex SAS2224B. You will find the following items in the
package:
1 x Power Cord 3 x Quick Install Guide
with warranty card in
different languages
1 x RS232 straight
6 x screws 2 x brackets
console cable
1.2. Overall Procedures
Here are some of the basic steps to guide you along:
1. Hardware setup
Please refer to Section 2 “Hardware Installation”.
2. Configure Hyper Terminal
Please refer to Section 3 “Hyper Terminal Configuration”.
3. Configure your Compex SAS2224B
Please refer to Section 4 “Configure Compex SAS2224B using Hyper Terminal”.
1 x Compex SAS2224B unit
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2. Hardware Installation
Compex SAS2224B can be installed as a desktop unit or mounted on a 19-inch rack. Detailed
installation process will be listed as shown.
2.1. Desktop installation
Insert one end of RJ45 network cable to any
port of Compex SAS2224B and the other
end to your PC.
Insert one end of RS232 straight console
cable to the console port of Compex
SAS2224B and the other end to your PC.
Insert the power cord to the socket
located at the back of Compex
SAS2224B and the other end to the
power point.
Check that the Power LED at the front
panel of Compex SAS2224B has lighted
up. The unit is now ready to use.
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2.2. Rack installation
Align the brackets holes with the
rack holes and fasten both brackets
to the rack.
Insert one end of RJ45 network cable to any
port of Compex SAS2224B and the other
end to your PC.
Insert one end of RS232 straight console
cable to the console port of Compex
SAS2224B and the other end to your PC.
Secure brackets to the holes located at both
sides of Compex SAS2224B. Fasten it with
the screws provided in the packaging.
Insert the power cord to the socket
located at the back of Compex
SAS2224B and the other end to the
power point.
Check that the Power LED at the
front panel of Compex SAS2224B has
lighted up. The unit is now ready to
use.
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p
NOTE
Please allow at least 4 inches of clearance on the front and back of the switch for
proper ventilation. This is especially important for enclosed rack installation.
2.3. Module Installation
A series of optional expansion modules are available for Compex SAS2224B. You need
to install the modules before turning on Compex SAS2224B. Please refer to
“Specifications” for the types of optional modules to be used.
Power off Compex SAS2224B,
unscrew and remove the metal plate
from the expansion slot.
Insert the module carefully into the
expansion module window and
ush it along the rail until it is
firmly inserted into the connector
of the PCB board of Compex
SAS2224B. Tighten the screws on
the module.
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NOTE
The expansion module is sold separately. Please refer to www.compex.com.sg or
www.cpx.com for more details.
To remove the expansion module, simply power off your Compex SAS2224B, draw out the
expansion module from the expansion slot and place back the metal plate to cover the slot.
2.4. Operating Systems Compatibilities for the usage of Keyboard Arrow
Key
Compex SAS2224B is specially designed with the support of two arrow key sets to
manipulate the selection in the console interface.
The table below illustrates the types of operating systems using different types of
function keys in your keyboard.
Windows 95, 98, 98SE, XP,
Windows 2000 with SP 1
ME or 2000
← → ↑ ↓
J L I M
If you are using Windows 2000 Hyper Terminal Program, ensure that you have installed
Windows 2000 Service Pack 2 or higher. With Windows 2000 Service Pack 2, the
arrow keys will function properly in the Hyper Terminal’s VT100 emulation.
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3. Hyper Terminal Configuration
By installing a terminal emulation program, such as Hyper Terminal, you can simply connect
your PC to Compex SAS2224B. Using a RS232 straight console cable, connect one end to a
PC, and the other end to Compex SAS2224B. You need to set your configuration as shown
below.
1. Type the name in the space provided.
2. Choose the COM Port that you have
selected from your PC.
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3. Adjust the Port setting from the COM1 (depends on the console port you have used)
Properties screen.
Bits per seconds: 19200
Data Bits: 8
Parity: none
Stop bits: 1
Flow Control: none
A Hyper Terminal screen will appear as shown below. The default password is password.
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You can easily configure your Compex SAS2224B, such as setting the trunking ports, VLANs,
etc.
4. Configure Compex SAS2224B using Hyper Terminal
Attach one end of the console cable to your PC and the other end to your Compex SAS2224B.
Configure your hyper terminal and log on to the main page to start configuring.
4.1. Port Configuration
This feature allows you to configure the speed, flow control, receiving and transmitting
bandwidth of your Compex SAS2224B.
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Speed:
This option allows the port to work in either forced or auto mode. When Compex
SAS2224B is set to 100Mbps forced mode, auto-MDIX function will be disabled.
Please note that when auto-MDIX is enabled, the respective port LED in the 100 FORCE and HALF FORCE mode, will not light up.
Upon setting the speed to Auto, you will be able to use any type of Ethernet RJ45 cable
for connecting to any devices since the auto-MDIX function has activated.
Options: Auto, 100M Full, 100M Half, 10M Full, 10M Half
Please note that for expansion module (Port 25), you can only configure as 100 Full or
100 Half Duplex. By default, it is set to 100 Full Duplex.
Flow Control:
This feature reports the flow control setting of the port. Enabling flow control function
prevents the overflow of data transfer in the network.
Rx/Tx Bandwidth:
This feature will control the bandwidth of the received/transmitted packets for all ports.
Each port’s bandwidth is configurable on both ingress and egress traffic independently.
By default, this feature is set to Non-Control for all ports. This means that Compex
SAS2224B will follow the bandwidth of each individual port, either in 10Mbps or
100Mbps.
Please note that whenever the ingress or egress traffic bandwidth exceeds the configured
threshold, the flow control will be triggered to limit the throughput.
Port Trunking is the ability to group together several 10/100Mbps ports into single
logical link. This is an inexpensive method to increase throughput between switches.
Compex SAS2224B supports 7 trunking groups, and each trunking group can aggregate
2 or 4 fixed physical ports.
Enable your desired trunking group/s by tapping your space bar from your keyboard.
NOTE
Port Trunking is not applicable to Port 25 (expansion module).
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4.3. Global Configuration
This option allows you to configure the global port control registers.
Half Duplex Back Pressure Flow:
Compex SAS2224B supports two backpressure flow control scheme to force incoming
packet back off after the switch destination port is congested. This means that when A
sends packets to B continuously, the latter might not be able to receive all packets on
time. As a result, some of the packets will be dropped. Upon enabling this option, B will
send out a packet, informing A to slow down the progress in transmitting the packets.
Broadcast Storm Filtering Control:
Enabling this option will allow each port to drop broadcast packets after a continuous
received broadcast packets counter up to 64 count. The counter will be reset to 0 every
800ms or when receiving any non-broadcast packets.
Loop Detect:
Compex SAS2224B provides loop-detecting function to alarm a network loop existing
via the diagnostic section (Section 5.3).
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4.4. Quality of Service
Quality of Service (QoS) refers to the capability of a network to provide a better service
to selected ports in the switch. A port with priority set High will have its transmitted
packets serviced first at the receiving port.
Compex SAS2224B can recognize QoS priority information from the incoming packets
and distribute packets in different queues for different service priority. It identifies the
packets’ priority based on:
TOS/Diff Serv. Priority:
This stands for Type of Services/Differentiated Services Priority. When TCP/IP's
TOS/DiffServ (DS) based priority is applied, Compex SAS2224B can recognize TCP/IP
Differentiated Services Codepoint (DSCP) priority information from the DS-field
defined on RFC2474. The DS field byte for IPv4 is the Type-of-Service (TOS) octet,
and for IPv6, it is the Traffic-Class octet. The recommended DiffServ Codepoints is
defined in RFC2597 to classify the traffic into different service classes.
802.1p Priority:
802.1p is an IEEE standard for providing quality of service (QoS) in Ethernet networks.
It uses tagged packets and allows switches to transmit packets based on the tagged
priority value.
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Adapted Flow Control:
Upon disabling this function, Compex SAS2224B can automatically turn off 802.3x
flow control and Back pressure flow control for 1~2 seconds whenever the port receives
a high priority frames. The flow control is re-enabled when no priority frames are
received for 1~2 seconds.
Priority Weighted Ration (High:Low):
Compex SAS2224B supports 2 levels of priority queues. The packet-based priority
weighted ratio of high-priority and low-priority queuing can be set as 4:1, 8:1 or 16:1 or
1:0.
4.5. Port Tagging Control
This option allows you to determine the tagging status of incoming frames that needs to
be forwarded to their respective destinations.
Don’t touch
Compex SAS2224B will leave the frames as it is, regardless of whether they are tagged
or untagged.
Remove Tag
Compex SAS2224B will follow the instruction for the individual ports and remove the
tag from the incoming frame before forwarding it to its destination.
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Insert Tag (high-priority only)
Compex SAS2224B will follow the instruction for the individual port and insert the tag
for incoming frames that are set to high priority before forwarding them to their
destination.
Insert Tag (all frame)
Compex SAS2224B will follow the instruction for individual port and insert a tag to all
incoming frames before forwarding them to their respective destinations.
Kindly select your option by toggling the space bar from your keyboard.
NOTE
This function can be enabled even if the VLAN function is not enabled.
4.6. VLAN Global Control
This feature allows you to control the various types of events that can encounter in the
network.
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VLAN Function:
Normally, any broadcast/multicast and unicast packet all not allowed switching between
VLANs. For example, Port 1 broadcast packet will only flood to port 2 and 3, and port 1
unicast packet is not allowed to forward to any member of another VLAN.
If the leaky VLAN function is enabled, 3 types of specific frame could be forward to
different VLAN destination port:
♦ Unicast packet leaky control
♦ ARP broadcast leaky control
♦ IP multicast leaky control
These 3 types of leaky control are useful for a switch to be broken into many VLANs
and want to enable a host-to-host communication between different VLANs without any
router or with router but improve the router performance.
Unicast Packet Inter-VLAN Leaky:
Unicast is a term to describe the communication in the network that packets are being
sent out from one point to another point.
Upon enabling this option, Compex SAS2224B allows the packet to be forwarded to a
destination port at different VLAN.
ARP broadcast Packet Inter-VLAN Leaky:
ARP broadcast refers to the ARP packets that are being sent out from one point to all
connected points in the network.
Upon enabling this option, Compex SAS2224B allowed ARP frame to be broadcasted
to all switch ports.
IP Multicast Packet Inter-VLAN Leaky:
IP multicast provides dynamic many-to-many connectivity between a set of senders (at
least 1) and a group of receivers.
Upon enabling this option, Compex SAS2224B allows the IP multicast packet to be
flooded to all multicast address group members.
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802.1Q VLAN tag aware:
IEEE 802.1Q is a standard for tagged Virtual LAN that uses an extra tag in the frame
header to identify the VLAN membership of a frame across bridges. Enabling this
option will inform Compex SAS2224B to take note of the tagged frames that are being
sent out to the network.
Ingress Rule for Acceptable frame types:
This Ingress Rule determines the types of frames being accepted by the receiving port.
Upon selecting Admit all Frames, the switch port will simultaneously allow the
incoming tagged and untagged frames to be forwarded to its destination port.
Options: Admit all Frames, Admit only VLAN-Tagged Frames
Ingress Rule for Ingress Filtering:
Ingress Filtering improves security by reducing the effectiveness of source address
spoofing denial of service attacks.
Upon enabling this option, Compex SAS2224B will follow the Ingress Rules that is set
for the Ingress Filtering to improve the security in the network.
4.7. VLAN Member Setup
Compex SAS2224B supports Virtual LAN, which logically groups every connection
into VLANs for traffic isolation and security purposes. Both tagged-and untagged-based
VLANs support a maximum of 32 groups. Each VLAN group can only forwards traffic
among its member ports.
For tagged VLAN, each port can be a member of more than one VLAN group. The
VLAN configuration feature allows you to create, delete, view tagged/untagged VLAN
groups. The range of VID starts from 2 to 4094.
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Create a new VLAN
You need to set the configuration environment to Edit mode.
1. Hit on the letter E (indicates that the environment is in edit mode) and then the
letter A to add in a new VLAN entry.
Toggle your spacebar to change the types of VLAN: Port-based or 802.1Q Tagged
For Port-based VLAN
The classification of any incoming packet on each port is defined by the PVID. Compex
SAS2224B uses the PVID to search the VLAN table for a VLAN member.
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For Tagged VLAN
The VLAN classification is the first step to be done before VLAN table lookup. To
classify a unique VID value to a received frame is defined as follows:
♦ If the tagged VID is not equal to 0, then tagged VID value is used.
♦ If the tagged VID is equal to 0, then PVID value is used.
After the unique 12-bits VID is classified, Compex SAS2224B will then lookup the
VLAN table, check for the ingress/egress rule and then forward to the valid destination
ports with specified tagging control process.
5. Monitor your Compex SAS2224B via Hyper Terminal
Besides configuring using Hyper Terminal, you can also monitor your network via this
program.
5.1. Overview
To view or edit your switch’s name, simply select 1 (Status) from the main menu, and
then choose 1 (Overview). The following screenshot will appear:
1. To edit your switch’s name, hit on E key on your keyboard and enter a name for
your Compex SAS2224B.
2. After completion, press the Enter key to update the changes.
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5.2. Port Status
This option allows you to view the connection speed (10M/100M), the duplex mode
(Half/Full Duplex), flow control (enable/disable), auto negotiation (enable/disable),
linking (Up/Down) and trunking status of all ports.
The screen will auto refresh in around 5 seconds’ time.
5.3. Diagnostics
This option detects problems found in looping or trunking in the network. When you
discover a [X] at any of the two sections, this means that the particular port in the
trunking group is not functioning; or the network encounters looping.
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5.4. Changing your Password
Password is an invaluable tool for a system administrator to secure Compex SAS2224B.
You can amend your current password through hyper terminal.
Please note that if you happen to forget your password, you need to reset your Compex
SAS2224B to its factory default. But, do bear in mind that, once this option is being
activated, all current configuration such as the VLANs, Port Trunking will also be reset
to its factory default.
5.4.1 Forget your Password
If you forget your password, you can
♦Enter another backup password - supadmin
Or
♦Reset your setting to factory default. But please bear in mind that all
configuration, including the VLAN setting, Trunking setting, etc will be
reset to its default.
5.5. Save your Configuration
This option assists you in saving your current configuration.
5.6. Load Factory Default Setting
This option allows you to load your configuration to its factory default.
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Appendix I Panel Views and Descriptions
2
3
1 4 5 6
Features Status and Indication
1 Power LED
2 Link/ACT LED
(For expansion
module)
3 Link/ACT LEDs
(For Port 1 to 24)
22 Compex 24-Port + 1 Expansion Slot Switch
Steady Green Power is supplied to the device.
Off No power is supplied to the device.
Steady Green A module is installed to the switch.
Blinking Green Activity is going on in the network.
Off
Steady Green The particular port is connected to the switch.
Blinking Green Activity is going on in the network.
Off No link is established to the switch.
SAS2224B
• No module is connected to the expansion
slot.
• The module is not properly installed.
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Features Status and Indication
4 100Mbps LED
(For expansion
module)
5 100Mbps LEDs
(For Port 1 to 24)
6 Console Port
Steady Green The module is operating at the speed of
100Mbps.
Off No function.
Steady Green The port is operating at the speed of
100Mbps.
Off The port is operating at the speed of 10Mbps.
Connect a serial 9 Pin (DB9) RS232 straight console cable here
and link it to the COM Port of the PC you are now using for
monitoring the switch.
8 7
Features Status and Indication
7 Reset Button
8 24 RJ45 Ethernet
Ports
English Compex 24-Port + 1 Expansion Slot Switch
To reboot your Compex SAS2224B.
Supports
• Auto negotiable 10/100Mbps
• Auto MDI/MDIX crossover detection function.
SAS2224B
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9 10
Features Status and Indication
9 Expansion Slot
10 AC power
connector
For optional module:
• 100Base-FX Single Mode Fiber Fast Ethernet Module
• 100Base-FX Multi Mode Fiber Fast Ethernet Module
Internal power supply is provided with voltage ratings of
100VAC to 240VAC, 50/60 Hz.
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Appendix II Specifications
Network Protocol, Standards and Electrical Emissions
Industry Standards
Safety Certifications
24 RJ45 Ports
Expansion Modules
Network Cables
Complies with
• IEEE 802.3 10Base-T
• IEEE 802.3u 100Base-TX, 100Base-FX
• IEEE 802.3x Flow Control
• IEEE 802.3p QoS
• IEEE 802.3ad Trunking
• IEEE 802.1q VLAN
• CE Mark
• FCC Class A
• Gost
• C-Tick
• UL
Interface Options
Supports 24 10/100Mbps ports (RJ-45, STP/UTP): Half/Full
Duplex modes at 10Mbps and 100Mbps.
Supports 1 modular slot for optional module
• 100Base-FX Single Mode Fiber Fast Ethernet Module
• 100Base-FX Multi Mode Fiber Fast Ethernet Module
• 100Base-TX/FX Fast Ethernet: 100Mbps (Half Duplex);
200Mbps (Full Duplex)
• Up to 32 VLAN groups for port based VLAN and Tagged
VLAN
• Support leaky VLAN control
7 trunking groups are available in Compex SAS2224B
Two priority queues for three types of Class Of Service (CoS)
• Port based
• 802.1p priority tag
• TCP/IP header’s TOS/DS classifier
• Back Pressure Flow Control (Half Duplex)
• IEEE 802.3x Flow Control (Full Duplex)
8K MAC Address
2.5Mbits
Physical and Environment
Environmental
Requirements
Physical Dimension
26 Compex 24-Port + 1 Expansion Slot Switch
Operating temperature
Storage temperature
Operating humidity
Storage humidity
RH = Relative Humidity
440mm x 200mm x 44mm (Lx D x H)
SAS2224B
: 0ºC to 40ºC
: -20ºC to 70ºC
: 10% to 90% RH
: 5% to 90% RH
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Power Consumption
Maximum current
AC Inputs
Maximum of 22 Watts
0.5A Max at 110V
Internal power supply is provided with voltage ratings of
100VAC to 240VAC, 50/60 Hz.
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Disclaimer: Compex, Inc. provides this guide without warranty of any kind, either expressed or implied, including but not
limited to the implied warranties of merchantability and fitness for a particular purpose. Compex, Inc. may make improvements
and/or changes to the product and/or specifications of the product described in this guide, without prior notice. Compex, Inc
will not be liable for any technical inaccuracies or typographical errors found in this guide. Changes are periodically made to
the information contained herein and will be incorporated into later versions of the guide. The information contained is subject
to change without prior notice.
Trademark Information: Compex
Windows and the Windows logo are the trademarks of Microsoft Corp. NetWare is the registered trademark of Novell Inc.
All other brand and product names are trademarks or registered trademarks of their respective owners.
Notice: Copyright
permission of Compex, Inc. is prohibited, except as allowed under the copyright laws.
Manual Revision by Ong
Manual Number: M-0432-V1.1C Version 1.1, August 2004
FCC NOTICE: This device 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 in a residential
installation. This device generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this device does cause harmful interference to radio or television
reception, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
•
Connect the computer into an outlet on a circuit
•
different from that to which the receiver is
connected.
Caution: Any changes or modifications not expressly approved by the grantee of this device could void the user's authority to
operate the equipment.
FCC Compliance Statement: 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.
ICES 003 Statement
This Class A digital apparatus complies with Canadian ICES-003
DECLARATION OF CONFORMITY: Compex, Inc. declares that the product:
Product Name: Compex 24 Ports + 1 Expansion Slot Switch
Model No.: SAS2224B conforms to the following Product Standards:
Radiated Emission Standards:
Conducted Emission Standards: EN60555Pt2 conducted emission; EN55022A conducted emission, LVD 60950 standard,
FCC Part 15 Class A
Immunity Standards:
Low Voltage Directive: EN 60 950:1992+A1: 1993+A2: 1993+A3; 1995+A4; 1996+A11: 1997.
Therefore, this product is in conformity with the following regional standards: FCC Class A following the provisions of
FCC Part 15 directive; CE Mark following the provisions of the EC directive.
Manufacturer’s Name: Compex, Inc.
Address: 4051 E. La Palma, Unit A,
You can register via Internet at: http://www.cpx.com or http://www.compex.com.sg
Or E-mail: support@compex.com.sg with the following information:
To activate the warranty, please complete this card and return to Compex within ninety (90) days of purchase date.
Product: Purchase Date: Revision: Serial No:
Name:
Company: Dept:
Address: City:
Postal/Zip Code: State: Country:
Phone: ( ) Extn: Fax: ( )
Computer in which this product is installed? Model: Serial No:
(Check all that apply):
Network Operating
System
(Check all that apply):
Applications used on
network processing
(Check all that apply):
learn about
Compex?
$ Work $ Friend $ Internet $ Dealer $ Magazine $ Exhibition How did you
$ Other: