Diamond Systems Epsilon User manual

Epsilon User Manual
Managed 8-Port Gigabit Ethernet Switch
Revision
Date
Comment
A
06/16/2011
Initial Release
Copyright 2011
FOR TECHNICAL SUPPORT Diamond Systems Corporation
PLEASE CONTACT: 555 Ellis Street
Mountain View, CA 94043 USA
[e-mail] Tel [phone]
Fax [phone]
www.diamondsystems.com

Epsilon User Manual Revision A www.diamondsystems.com Page 2
CONTENTS
1. Important Safe Handling Information .............................................................................................................3
2. Introduction.......................................................................................................................................................4
2.1 Features.........................................................................................................................................................4
2.2 Main Feature List...........................................................................................................................................4
2.3 Mechanical and Environmental .....................................................................................................................5
2.4 Cable List.......................................................................................................................................................5
3. Functional Overview.........................................................................................................................................6
3.1 Functional Block Diagram..............................................................................................................................6
4. Board Outline and Layout................................................................................................................................7
4.1 Epsilon Board Drawing..................................................................................................................................7
5. Connector and Jumper List.............................................................................................................................8
5.1 Connector List................................................................................................................................................8
5.2 Jumper Block (J15)........................................................................................................................................8
6. Connector Pinout and Pin Description...........................................................................................................9
6.1 PC/104 Connectors (J1 and J2) - Optional ...................................................................................................9
6.2 PCI Power (J3) - Optional........................................................................................................................... 10
6.3 Ethernet (J4-J11)........................................................................................................................................ 10
6.4 Serial Interface (J12) .................................................................................................................................. 10
6.5 LED Status Signals (J13) ........................................................................................................................... 11
6.6 Input Power (J14) ....................................................................................................................................... 11
6.7 JTAG (J16) –Factory Use Only ................................................................................................................. 11
7. Command Line Interface............................................................................................................................... 12
7.1 Com Port Set-up......................................................................................................................................... 12
7.2 Command Hierarchy................................................................................................................................... 12
7.3 Login/Logout Procedures ........................................................................................................................... 12
7.4 Help Utility................................................................................................................................................... 13
7.5 Example...................................................................................................................................................... 13
7.6 Entering Commands................................................................................................................................... 14
7.7 Terminology................................................................................................................................................ 14
7.8 Changing the IP Address............................................................................................................................ 15
7.9 Command Overview................................................................................................................................... 15
7.10 Detailed Command Description.................................................................................................................. 17
7.10.1 System Commands............................................................................................................................ 17
7.10.2 Console Commands .......................................................................................................................... 19
7.10.3 Port Commands................................................................................................................................. 19
7.10.4 MAC Table Commands...................................................................................................................... 20
7.10.5 VLAN Commands.............................................................................................................................. 21
7.10.6 Aggregation/Trunking Commands..................................................................................................... 22
7.10.7 LACP Commands.............................................................................................................................. 23
7.10.8 RSTP Commands.............................................................................................................................. 23
7.10.9 User Group Commands..................................................................................................................... 25
7.10.10 QoS Commands ................................................................................................................................ 25
7.10.11 Mirror Commands.............................................................................................................................. 26
7.10.12 IP Commands .................................................................................................................................... 27
7.10.13 Dot1X Commands.............................................................................................................................. 28
7.10.14 IGMP Snooping Commands.............................................................................................................. 29
7.10.15 Debug Commands............................................................................................................................. 29
7.11 Examples.................................................................................................................................................... 30
7.11.1 VLAN configuration............................................................................................................................ 30
7.11.2 User Group Configuration.................................................................................................................. 30
8. Web Interface ................................................................................................................................................. 31
9. Thermal Solutions.......................................................................................................................................... 32
9.1 Heatspreader.............................................................................................................................................. 32
9.2 Heatsink...................................................................................................................................................... 33
10. Specifications................................................................................................................................................. 34
Appendix A Default values .............................................................................................................................. 35

Epsilon User Manual Revision A www.diamondsystems.com Page 3
1. IMPORTANT SAFE HANDLING INFORMATION
WARNING!
ESD-Sensitive Electronic Equipment
Observe ESD-safe handling procedures when working with this product.
Always use this product in a properly grounded work area and wear appropriate
ESD-preventive clothing and/or accessories.
Always store this product in ESD-protective packaging when not in use.
Safe Handling Precautions
The Epsilon board contains a high density connector with many connections to sensitive electronic components.
This creates many opportunities for accidental damage during handling, installation and connection to other
equipment. The list here describes common causes of failure found on boards returned to Diamond Systems for
repair. This information is provided as a source of advice to help you prevent damaging your Diamond (or any
vendor‟s) boards.
ESD damage –This type of damage is usually almost impossible to detect, because there is no visual sign of
failure or damage. The symptom is that the board eventually simply stops working, because some component
becomes defective. Usually the failure can be identified and the chip can be replaced. To prevent ESD damage,
always follow proper ESD-prevention practices when handling computer boards.
Damage during handling or storage –On some boards we have noticed physical damage from mishandling. A
common observation is that a screwdriver slipped while installing the board, causing a gouge in the PCB surface
and cutting signal traces or damaging components.
Another common observation is damaged board corners, indicating the board was dropped. This may or may not
cause damage to the circuitry, depending on what is near the corner. Most of our boards are designed with at
least 25 mils clearance between the board edge and any component pad, and ground / power planes are at least
20 mils from the edge to avoid possible shorting from this type of damage. However these design rules are not
sufficient to prevent damage in all situations.
A third cause of failure is when a metal screwdriver tip slips, or a screw drops onto the board while it is powered
on, causing a short between a power pin and a signal pin on a component. This can cause overvoltage / power
supply problems described below. To avoid this type of failure, only perform assembly operations when the
system is powered off.
Sometimes boards are stored in racks with slots that grip the edge of the board. This is a common practice for
board manufacturers. However our boards are generally very dense, and if the board has components very close
to the board edge, they can be damaged or even knocked off the board when the board tilts back in the rack.
Diamond recommends that all our boards be stored only in individual ESD-safe packaging. If multiple boards are
stored together, they should be contained in bins with dividers between boards. Do not pile boards on top of each
other or cram too many boards into a small location. This can cause damage to connector pins or fragile
components.
Power supply wired backwards –Our power supplies and boards are not designed to withstand a reverse
power supply connection. This will destroy each IC that is connected to the power supply (i.e. almost all ICs). In
this case the board will most likely will be unrepairable and must be replaced. A chip destroyed by reverse power
or by excessive power will often have a visible hole on the top or show some deformation on the top surface due
to vaporization inside the package. Check twice before applying power!
Overvoltage on analog input –If a voltage applied to an analog input exceeds the design specification of the
board, the input multiplexor and/or parts behind it can be damaged. Most of our boards will withstand an
erroneous connection of up to 35V on the analog inputs, even when the board is powered off, but not all boards,
and not in all conditions.
Overvoltage on analog output –If an analog output is accidentally connected to another output signal or a
power supply voltage, the output can be damaged. On most of our boards, a short circuit to ground on an analog
output will not cause trouble.
Overvoltage on digital I/O line –If a digital I/O signal is connected to a voltage above the maximum specified
voltage, the digital circuitry can be damaged. On most of our boards the acceptable range of voltages connected
to digital I/O signals is 0-5V, and they can withstand about 0.5V beyond that (-0.5 to 5.5V) before being damaged.
However logic signals at 12V and even 24V are common, and if one of these is connected to a 5V logic chip, the
chip will be damaged, and the damage could even extend past that chip to others in the circuit.

Epsilon User Manual Revision A www.diamondsystems.com Page 4
2. INTRODUCTION
Epsilon is a managed, 8-Port Gigabit Ethernet Switch with wide power supply voltage input and a serial
management port. Epsilon offers 10/100/1000Mbps copper twisted pair ports on a PC/104 format board. The
circuit is standalone, so no bus connectors are required. Optional PC/104 bus connectors are available to
facilitate the installation in the interior of a stack of boards. An RS-232 interface is provided to enable
communication between the on-board management microcontroller and a host processor through a Command
Line Interface (CLI). A wide-range DC power supply is built into the board to allow it to be used with industrial
power sources as well as the typical embedded +5V supply.
Highly Advanced Gigabit Ethernet Switch
Epsilon is an 8-port Gigabit Ethernet switch in the compact PC/104 form factor. Epsilon operates standalone, but
can be included in any PC/104 board stack.
Layer 2+ Managed Switch
Epsilon‟s Ethernet switch chip includes a built-in microcontroller for configuration and management. It can be
accessed either through the on-board RS-232 port or one of the Ethernet ports.
Wide Power DC/DC Power Supply
Epsilon can be powered through a wide voltage +7-36V DC/DC power supply input or a regulated +5VDC input.
+5VDC power may also be provided through the PC/104 connector.
Rugged Design
Extended temperature operation of -40°C to +85°C is tested and guaranteed. Epsilon was designed with harsh
applications in mind. Latching connectors provide increased reliability.
PC/104 Bus Interface
Optionally Epsilon provides a full passthrough PC/104 interface, allowing it to be integrated into any PC/104
stack.
Software Support
The switch is ready to plug into your application without any driver installation or firmware upgrades. A web
interface and a CLI provide an intuitive GUI for configuring and managing the switch.
2.1 Features
2.2 Main Feature List
PC/104 form factor
8 ports of 10/100/1000Mbps Ethernet over copper
Layer 2+ managed switch
Built-in microcontroller with management software and web interface for control and configuration
176KB on-board frame buffer; jumbo frame support at all speeds
8K MAC addresses and 4K VLANs (IEEE 802.1Q), 8K IP multicast group support
Programmable multi-layer classifier with 4 QoS classes
DSCP remarking for IPv4 and IPv6 frames
Rapid spanning tree protocol (RSTP)
Right angled, locking pin headers for all Ethernet ports (standard configuration)
Safe Flash/configuration update through web and serial interfaces
Reset and Factory Default signals available on Status Signal connector
+7-36VDC or +5VDC power supply input

Epsilon User Manual Revision A www.diamondsystems.com Page 5
2.3 Mechanical and Environmental
PC/104 compliant form factor including:
Board dimensions
Mounting holes
Component and optional heatsink height
Optional ISA bus connectors
-40°C to +85°C ambient operating temperature with heatspreader
or -40°C to +71°C ambient operating temperature with heatsink
2.4 Cable List
Part Number
Cable Description
6981052
Ethernet cable (1 per port)
6981050
Serial cable
6981051
Power cable
PC/104™ and PC/104-Plus™ are trademarks of the PC/104 Embedded Consortium.
All other trademarks are the property of their respective owners.

Epsilon User Manual Revision A www.diamondsystems.com Page 6
3. FUNCTIONAL OVERVIEW
3.1 Functional Block Diagram
Figure 1. Functional Block Diagram
Epsilon is an 8-Port managed Gigabit Ethernet switch module offering 10/100/1000Mbps copper twisted pair ports
on a PC/104 form factor board. Epsilon operates standalone, requiring no connection to a single board computer
in the stack.
Epsilon is a Layer 2+ managed Ethernet switch with built-in microcontroller and memory for configuration and
management. The Flash memory holds dual application images along with the boot code, The SRAM is used for
program execution and storing the MAC addresses. The EEPROM holds the configuration parameters. .
An RS-232 interface is provided to enable communication between the on-board management microcontroller
and a host processor through a CLI interface. The microcontroller is also accessible through one of the Ethernet
ports via a web management interface.
Power can be provided through the +7-36VDC wide-range DC power supply built into the board, enabling use
with industrial power sources. Epsilon can also be powered from a +5VDC input source, using either the main
power connector or an optional connection to the PC/104 bus or PC/104-Plus (PCI) bus.

Epsilon User Manual Revision A www.diamondsystems.com Page 7
4. BOARD OUTLINE AND LAYOUT
4.1 Epsilon Board Drawing
The following diagram shows the locations for all connectors and jumpers which are described in the next
sections.
Figure 2. Epsilon Top (Connectors and Jumpers)

Epsilon User Manual Revision A www.diamondsystems.com Page 8
5. CONNECTOR AND JUMPER LIST
5.1 Connector List
The following table summarizes the functions of Epsilon‟s interface connectors. Refer to the Figure 2 for the
locations of these connectors on Epsilon. Signal functions relating to all of Epsilon‟s interface connectors are
discussed in greater detail in Section 6 of this document. Other connectors and jumper blocks on Epsilon are
reserved for Diamond‟s use only.
Connector
Function
J1 & J2
PC-104 Expansion bus (optional)
J3
PCI Power (optional)
J4-J11
Ethernet (x8)
J12
RS-232 Serial Interface
J13
LED Status Signals and Resets
J14
Power In
J15
Jumpers (see Jumper Block (J15)
J16
JTAG
5.2 Jumper Block (J15)
The following table summarizes the functions of Epsilon‟s jumper block, J15. Refer to the drawing in Section 4 for
the locations of J15 on Epsilon.
Jumper
J15 Pins
Function
1&2
Reset: Install jumper to reset the switch
3&4
Default Set: Install jumper to set the switch to its factory default settings
5&6
Factory Use Only

Epsilon User Manual Revision A www.diamondsystems.com Page 9
6. CONNECTOR PINOUT AND PIN DESCRIPTION
6.1 PC/104 Connectors (J1 and J2) - Optional
Connectors J1 and J2 are a special order option to provide a passthrough ISA bus which allows Epsilon to be
incorporated into a PC/104 stack. Epsilon can also be powered from the ISA bus when these connectors are
installed. The PC/104 stackable bus is supported by a standard PC/104 ISA stackable expansion bus connector.
The four row, 104-pin female header connector is actually broken into two pieces (J1 - A/B, J2 - C/D) with the pin
assignment shown below.
Note: For more information on the PC/104 specification, visit the PC/104 Embedded Consortium website, at
http://www.pc104.org.
J1: PC/104 8-bit bus connector J2: PC/104 16-bit bus connector
IOCHK
A1
B1
GND
GND
D0
C0
GND
SD7
A2
B2
RESET
MEMCS1
6
D1
C1
SBHE
SD6
A3
B3
+5V
IOCS16
D2
C2
LA23
SD5
A4
B4
IRQ9
IRQ10
D3
C3
LA22
SD4
A5
B5
-5V
IRQ11
D4
C4
LA21
SD3
A6
B6
DRQ2
IRQ12
D5
C5
LA20
SD2
A7
B7
-12V
IRQ15
D6
C6
LA19
SD1
A8
B8
SRDY
IRQ14
D7
C7
LA18
SD0
A9
B9
+12V
DACK0
D8
C8
LA17
IOCHRDY
A10
B10
KEY
DRQ0
D9
C9
MEMR
AEN
A11
B11
SMEM
W
DACK5
D10
C10
MEMW
SA19
A12
B12
SMEM
R
DRQ5
D11
C11
SD8
SA18
A13
B13
IOW
DACK6
D12
C12
SD9
SA17
A14
B14
IOR
DRQ6
D13
C13
SD10
SA16
A15
B15
DACK3
DACK7
D14
C14
SD11
SA15
A16
B16
DRQ3
DRQ7
D15
C15
SD12
SA14
A17
B17
DACK1
+5V
D16
C16
SD13
SA13
A18
B18
DRQ1
MASTER
D17
C17
SD14
SA12
A19
B19
REFRE
SH
GND
D18
C18
SD15
SA11
A20
B20
BCLK
GND
D19
C19
KEY
SA10
A21
B21
IRQ7
SA9
A22
B22
IRQ6
SA8
A23
B23
IRQ5
SA7
A24
B24
IRQ4
SA6
A25
B25
IRQ3
SA5
A26
B26
DACK2
SA4
A27
B27
TC
SA3
A28
B28
BALE
SA2
A29
B29
+5V
SA1
A30
B30
OSC
SA0
A31
B31
GND
GND
A32
B32
GND

Epsilon User Manual Revision A www.diamondsystems.com Page 10
6.2 PCI Power (J3) - Optional
Connector J3 is a special order option to supply power via the PCI bus. In the pinout below, the pins are noted as
Epsilon pin number / PCI standard pin number. The function are also listed as Epsilon signal/PCI standard signal,
with only one name when the function is common (i.e., +5V or ground).
NC / AD26
1 / B20
2 / A20
Ground
+5V
3 / B21
4 / A21
NC / AD269
NC / AD30
5 / B22
6 / A22
+5V
Ground
7 / B23
8 / A23
NC / REQ0#
NC / REQ2#
9 / B24
10 / A24
Ground
Connector Type: 2mm dual row straight pin header with gold flash plating
6.3 Ethernet (J4-J11)
Epsilon contains eight right-angle, locking pin headers for the eight Ethernet ports. Each port has the same style
and pinout. Each signal is associated with a particular color inside of the Cat6 cable.
(White/Brown) DD+
1
2
DD- (Brown)
(White/Blue) DC+
3
4
DC- (Blue)
(White/Green) DB+
5
6
DB- (Green)
(White/Orange) DA+
7
8
DA- (Orange)
Ground
9
10
Ground
Connector Type: 2mm dual row right-angle, locking pin header with tin plating
6.4 Serial Interface (J12)
Epsilon contains an RS-232 connector, J12, that connects the on-board 8051 microcontroller to an external serial
port.
1
Ground
2
TxD Out
3
RxD In
Connector Type: 2mm single row right-angle, locking pin header with tin plating