Moxa Technologies PT-7828 Series User manual

Moxa PowerTrans Switch
PT-7828 User’s Manual
www.moxa.com/product
Third Edition, September 2010
©2010 Moxa Inc. All rights reserved.
Reproduction without permission is prohibited.

Moxa PowerTrans Switch
PT-7828 User’s Manual
The software described in this manual is furnished under a license agreement and may be used only in
accordance with the terms of that agreement.
Copyright Notice
Copyright ©2010 Moxa Inc.
All rights reserved.
Reproduction without permission is prohibited.
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MOXA is a registered trademark of Moxa Inc.
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Information in this document is subject to change without notice and does not represent a commitment on the
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This product might include unintentional technical or typographical errors. Changes are periodically made to the
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Table of Contents
Chapter 1Introduction ...............................................................................................1-1
Overview .............................................................................................................................. 1-2
Package Checklist................................................................................................................. 1-2
Software Features ................................................................................................................. 1-2
Chapter 2Getting Started ..........................................................................................2-1
Serial Console Configuration (115200, None, 8, 1, VT100) ................................................ 2-2
Configuration by Telnet Console.......................................................................................... 2-5
Configuration by Web Browser ............................................................................................ 2-7
Disabling Telnet and Browser Access .................................................................................. 2-9
Chapter 3Featured Functions...................................................................................3-1
Configuring Basic Settings................................................................................................... 3-3
System Identification................................................................................................. 3-3
Password ................................................................................................................... 3-4
Accessible IP............................................................................................................. 3-5
Port ............................................................................................................................ 3-6
Network..................................................................................................................... 3-7
Time .......................................................................................................................... 3-9
Daylight Saving Time ............................................................................................... 3-9
IEEE 1588 PTP................................................................................................................... 3-10
How Does an Ethernet Switch Affect 1588 Synchronization? ............................................3-11
PTP Setting......................................................................................................................... 3-12
System File Update—By Remote TFTP ................................................................. 3-13
System File Update—By Local Import/Export....................................................... 3-14
System File Update - By Backup Media ................................................................. 3-15
Restart ..................................................................................................................... 3-15
Factory Default........................................................................................................ 3-15
Using Port Trunking ........................................................................................................... 3-16
The Port Trunking Concept..................................................................................... 3-16
Configuring Port Trunking...................................................................................... 3-17
Configuring SNMP............................................................................................................. 3-18
SNMP Read/Write Settings..................................................................................... 3-19
Trap Settings ........................................................................................................... 3-21
Private MIB information ......................................................................................... 3-22
Using Communication Redundancy ................................................................................... 3-22
The Turbo Ring Concept......................................................................................... 3-23
Configuring Turbo Ring and Turbo Ring V2.......................................................... 3-27
The Turbo Chain Concept................................................................................................... 3-31
Configuring “Turbo Chain”................................................................................................ 3-32
Head Switch Configuration..................................................................................... 3-32
Member Switch Configuration................................................................................ 3-33
Tail Switch Configuration....................................................................................... 3-33
Explanation of “Current Status” Items .................................................................... 3-33
The STP/RSTP Concept.......................................................................................... 3-34
Configuring STP/RSTP........................................................................................... 3-40
Using Traffic Prioritization................................................................................................. 3-42
The Traffic Prioritization Concept .......................................................................... 3-42
Configuring Traffic Prioritization ........................................................................... 3-45

Using Virtual LAN ............................................................................................................. 3-47
The Virtual LAN (VLAN) Concept ........................................................................ 3-47
Sample Applications of VLANs using PT-7828 ..................................................... 3-49
Configuring Virtual LAN........................................................................................ 3-50
Using Multicast Filtering.................................................................................................... 3-52
The Concept of Multicast Filtering ......................................................................... 3-52
Configuring IGMP Snooping .................................................................................. 3-55
Add Static Multicast MAC...................................................................................... 3-56
Configuring GMRP ................................................................................................. 3-57
GMRP Table ........................................................................................................... 3-57
Using Bandwidth Management .......................................................................................... 3-58
Broadcast Storm Protection..................................................................................... 3-58
Traffic Rate Limiting Settings................................................................................. 3-58
Using Port Access Control.................................................................................................. 3-59
Configuring Static Port Lock .................................................................................. 3-60
Configuring IEEE 802.1X....................................................................................... 3-60
Using IP Filter .................................................................................................................... 3-63
Using Auto Warning ........................................................................................................... 3-63
Configuring Email Warning.................................................................................... 3-63
Event Type .............................................................................................................. 3-64
Email Setup ............................................................................................................. 3-65
Configuring Relay Warning .................................................................................... 3-66
Event Setup ............................................................................................................. 3-67
Warning List............................................................................................................ 3-68
Using Line-Swap-Fast-Recovery........................................................................................ 3-68
Configuring Line-Swap Fast Recovery................................................................... 3-68
Using Set Device IP............................................................................................................ 3-68
Configuring Set Device IP ...................................................................................... 3-69
DHCP Relay Agent (Option 82) ......................................................................................... 3-70
Using Diagnosis.................................................................................................................. 3-72
Mirror Port .............................................................................................................. 3-72
Ping ......................................................................................................................... 3-73
LLDP Function Overview .................................................................................................. 3-73
LLDP Web Interface ............................................................................................... 3-74
LLDP Settings......................................................................................................... 3-74
LLDP Table............................................................................................................. 3-74
Using Monitor .................................................................................................................... 3-75
Monitor by Switch................................................................................................... 3-75
Monitor by Port ....................................................................................................... 3-75
Using the MAC Address Table ........................................................................................... 3-76
Using System Log .............................................................................................................. 3-77
Event Log................................................................................................................ 3-77
Syslog...................................................................................................................... 3-78
Using HTTPS/SSL ............................................................................................................. 3-79
Using Layer 3 Settings ....................................................................................................... 3-80
The Layer-3 Switching Concept.............................................................................. 3-80
Interface Setting ...................................................................................................... 3-81
RIP .......................................................................................................................... 3-82
OSPF Settings..................................................................................................................... 3-83
OSPF Global Settings.............................................................................................. 3-83
OSPF Area Settings................................................................................................. 3-84

OSPF Interface Settings .......................................................................................... 3-85
OSPF Virtual Link Settings..................................................................................... 3-86
OSPF Area Aggregation Settings............................................................................ 3-87
OSPF Neighbor Table ............................................................................................. 3-87
VRRP Settings ........................................................................................................ 3-88
Static Route ............................................................................................................. 3-89
Routing Table.......................................................................................................... 3-90
Using System Log .............................................................................................................. 3-90
Event Log................................................................................................................ 3-90
Syslog Settings ........................................................................................................ 3-91
Using HTTPS/SSL ............................................................................................................. 3-92
Appendix AMIB Groups...............................................................................................A-1
Appendix BSpecifications...........................................................................................B-1
Appendix CModbus/TCP Map .....................................................................................C-1

1
1
Chapter 1 Introduction
Welcome to the PowerTrans PT-7828, a managed redundant Gigabit Ethernet switch designed
especially for connecting Ethernet-enabled devices for industrial field applications.
The following topics are covered in this chapter:
Overview
Package Checklist
Software Features

PT-7828 User’s Manual Introduction
1-2
Overview
The PowerTrans PT-7828 is certified for use in power substation automation systems (IEC
61850-3, IEEE 1613), traffic control systems (NEMA TS 2), and railway applications
(EN50121-4). It can be used for Gigabit or Fast Ethernet backbones and supports redundant ring
topologies. It also supports dual power inputs (24/48 VDC or 110/220 VDC/VAC) to increase the
reliability of communication.
The PT-7828 has a modular design that makes network planning easy and allows greater flexibility.
You can install up to 4 Gigabit Ethernet ports and 24 Fast Ethernet ports. Optional front or rear
wiring makes the PT-7828 suitable for different applications.
Package Checklist
The PowerTrans PT-7828 is shipped with the following items. If any of these items is missing or
damaged, please contact your customer service representative for assistance.
y1 PowerTrans PT-7828
yHardware installation guide
yCD-ROM with user’s manual and SNMP MIB file
yWarranty statement
yRJ45-to-DB9 console port cable
yProtective caps for unused ports
y2 rackmount attachments
Software Features
yStatic routing and RIP V1/V2 supported
yTurbo Ring, Turbo Chain, and RSTP/STP (IEEE 802.1W/D)
yVRRP ensures redundant routing paths
yIEEE 1588 PTP (Precision Time Protocol) for precise time synchronization of networks
yDHCP Option 82 for IP address assignment for different policies
ySupports Modbus TCP for easy integration in HMI
ySupports LLDP (Link Layer Discovery Protocol)
yRedundant Gigabit Turbo Ring, RSTP/STP (IEEE 802.1w/D), and Turbo Chain
yIGMP snooping, GMRP to filter multicast traffic from industrial Ethernet protocols
yIEEE 802.1Q VLAN, GVRP for easier network planning
yQoS-IEEE 802.1p/1Q and TOS/DiffServ to increase determinism
y802.3ad, LACP for bandwidth optimization
yIEEE 802.1X and https/SSL to enhance network security
ySNMP V1/V2c/V3 for differential network management
yRMON for efficient, proactive network monitoring
ySupports ABC-01 for system configuration backup
yAccess restriction by MAC address
yPort mirroring for online debugging
yAutomatic warnings by email, relay output
yAutomatic recovery of connected device’s IP addresses
yLine-swap fast recovery
yConfiguration through web browser, Telnet/serial console, Windows utility, and ABC-01

2
2
Chapter 2 Getting Started
This chapter explains how the initial installation process for the PT-7828. There are three ways to
access PT-7828’s configuration settings: the serial console, Telnet console, and web console. If
you do not know the PT-7828’s IP address, you can open the serial console by connecting the
PT-7828 to a PC’s COM port with a short serial cable. You can open the Telnet or web console
over an Ethernet LAN or over the Internet.
The following topics are covered:
Serial Console Configuration (115200, None, 8, 1, VT100)
Configuration by Telnet Console
Configuration by Web Browser
Disabling Telnet and Browser Access

PT-7828 User’s Manual Getting Started
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Serial Console Configuration (115200, None, 8, 1, VT100)
NOTE yYou cannot connect to the serial and Telnet console at the same time.
yYou can connect to the web console and another console (serial or Telnet) at the same time.
However, it is strongly recommended that you do NOT do so. Following this advice will
allow you to maintain better control over the PT-7828’s configuration.
NOTE We recommend using PComm Terminal Emulator when opening the serial console. This
software can be downloaded free of charge from the Moxa website.
Before running PComm Terminal Emulator, use an RJ45 to DB9-F (or RJ45 to DB25-F) cable to
connect the PT-7828’s console port to your PC’s COM port (generally COM1 or COM2,
depending on how your system is set up).
After installing PComm Terminal Emulator, open the PT-7828’s serial console as follows:
1. From the Windows desktop, click Start ÆPrograms ÆPComm Lite 1.3 ÆTerminal
Emulator.
2. Select Open under the Port Manager menu to open a new connection.

PT-7828 User’s Manual Getting Started
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3. The Property window should open. On the Communication Parameter tab for Ports, select
the COM port that is being used for the console connection. Set the other fields as follows:
115200 for Baud Rate, 8for Data Bits, None for Parity, and 1for Stop Bits.
4. On the Terminal tab, select VT100 for Terminal Type. Click OK.
5. In the terminal window, the PT-7828 will prompt you to select a terminal type. Enter 1to
select ansi/vt100 and press Enter.

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6. The serial console will prompt you to log in. Press Enter and select admin or user. Use the
down arrow key on your keyboard to select the Password field and enter a password if
desired. This password will be required to access any of the consoles (web, serial, Telnet). If
you do not wish to create a password, leave the Password field blank and press Enter.
7. The Main Menu of the PT-7828’s serial console should appear. (In PComm Terminal
Emulator, you can adjust the font by selecting Font… in the Edit menu.)
8. Use the following keys on your keyboard to navigate the PT-7828’s serial console:
Key Function
Up, down, right, left arrow keys
Tab Move the onscreen cursor
Enter Display and select options
Space Toggle options
Esc Previous menu

PT-7828 User’s Manual Getting Started
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Configuration by Telnet Console
You may open the PT-7828’s Telnet or web console over a network. This requires that the PC host
and PT-7828 are on the same logical subnet. You may need to adjust your PC host’s IP address
and subnet mask. By default, the PT-7828’s IP address is 192.168.127.253 and PT-7828’s subnet
mask is 255.255.255.0 (for a Class C network). This means that your PC’s IP address must be set
to 192.168.xxx.xxx for a subnet mask of 255.255.0.0, or to 192.168.127.xxx with a subnet mask of
255.255.255.0.
NOTE To connect to the PT-7828’s Telnet or web console, your PC host and the PT-7828 must be on
the same logical subnet.
NOTE When connecting to the PT-7828’s Telnet or web console, first connect one of PT-7828’s
Ethernet ports to your Ethernet LAN or directly to your PC’s Ethernet port. You may use either a
straight-through or cross-over Ethernet cable.
NOTE The PT-7828’s default IP address is 192.168.127.253.
After making sure that the PT-7828 is connected to the same LAN and logical subnet as your PC,
open the PT-7828’s Telnet console as follows:
1. Click Start ÆRun from the Windows Start menu. Telnet to the PT-7828’s IP address from
the Windows Run window. You may also issue the Telnet command from a DOS prompt.
2. In the terminal window, the Telnet console will prompt you to select a terminal type. Type 1
to choose ansi/vt100, and then press Enter.

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3. The Telnet console will prompt you to log in. Press Enter and select admin or user. Use the
down arrow key on your keyboard to select the Password field and enter a password if
desired. This password will be required to access any of the consoles (web, serial, Telnet). If
you do not wish to create a password, leave the Password field blank and press Enter.
4. The Main Menu of the PT-7828’s Telnet console should appear.
5. In the terminal window, select Preferences… from the Terminal menu on the menu bar.
6. The Terminal Preferences window should appear. Make sure that VT100 Arrows is
checked.

PT-7828 User’s Manual Getting Started
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7. Use the following keys on your keyboard to navigate the PT-7828’s Telnet console:
Key Function
Up, down, right, left arrow keys
Tab Move the onscreen cursor
Enter Display and select options
Space Toggle options
Esc Previous menu
NOTE The Telnet console looks and operates in precisely the same manner as the serial console.
Configuration by Web Browser
The PT-7828’s web console is a convenient way to modify the configuration and access the
built-in monitoring and network administration functions. You can open the PT-7828’s web
console using a standard web browser such as Internet Explorer or Netscape.
NOTE To connect to the PT-7828’s Telnet or web console, your PC host and the PT-7828 must be on
the same logical subnet.
NOTE If the PT-7828 is configured for other VLAN settings, you must make sure your PC host is on the
management VLAN.
NOTE When connecting to the PT-7828’s Telnet or web console, first connect one of PT-7828’s
Ethernet ports to your Ethernet LAN or directly to your PC’s Ethernet port. You may use either a
straight-through or cross-over Ethernet cable.
NOTE The PT-7828’s default IP address is 192.168.127.253.

PT-7828 User’s Manual Getting Started
2-8
After making sure that the PT-7828 is connected to the same LAN and logical subnet as your PC,
open the PT-7828’s web console as follows:
1. Point your web browser to the PT-7828’s IP address by entering it in the Address or URL
field.
2. The PT-7828’s web console will open, and you will be prompted to log in. Select the login
account (admin or user) and enter the Password. This password will be required to access any
of the consoles (web, serial, Telnet). If you do not wish to create a password, leave the
Password field blank and press Enter.
NOTE By default, no password is assigned to the PT-7828’s web, serial, and Telnet consoles.
3. After logging in, you may need to wait a few moments for the web console to appear. Use the
folders in the left navigation panel to navigate between different pages of configuration
options.

PT-7828 User’s Manual Getting Started
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Disabling Telnet and Browser Access
If you are connecting the PT-7828 to a public network but do not intend to manage it over the
network, we suggest disabling both the Telnet and web consoles. This is done through the serial
console, by navigating to System Identification under Basic Settings. Disable or enable the
Telnet Console and Web Configuration as shown below:

3
3
Chapter 3 Featured Functions
This chapter explains how to access PT-7828’s various configuration, monitoring, and
administration functions. These functions can be accessed by serial, Telnet, or web console. The
serial console can be used if you do not know PT-7828’s IP address and requires that you connect
the PT-7828 to a PC COM port. The Telnet and web consoles can be opened over an Ethernet
LAN or the Internet.
The web console is the most user-friendly way to configure PT-7828. In this chapter, we use the
web console interface to introduce the functions. There are only a few differences between the web
console, serial console, and Telnet console.
The following topics are covered in this chapter:
Configuring Basic Settings
IEEE 1588 PTP
How Does an Ethernet Switch Affect 1588 Synchronization?
PTP Setting
Using Port Trunking
Configuring SNMP
Using Communication Redundancy
The Turbo Chain Concept
Configuring “Turbo Chain”
Using Traffic Prioritization
Using Virtual LAN
Using Multicast Filtering
Using Bandwidth Management
Using Port Access Control
Using IP Filter
Using Auto Warning
Using Line-Swap-Fast-Recovery
Using Set Device IP
DHCP Relay Agent (Option 82)
Using Diagnosis
LLDP Function Overview
Using Monitor
Using the MAC Address Table

PT-7828 User’s Manual Featured Functions
3-2
Using System Log
Using HTTPS/SSL
Using Layer 3 Settings
OSPF Settings
Using System Log
Using HTTPS/SSL

PT-7828 User’s Manual Featured Functions
3-3
Configuring Basic Settings
Basic Settings includes the most common settings required by administrators to maintain and
control the PT-7828.
System Identification
System Identification items are displayed at the top of the web console and will be included in
alarm emails. You can set the System Identification items to make it easier to identify different
switches that are connected to your network.
Switch Name
Setting Description Factory Default
Max. 30
characters
This option is useful for differentiating between
the roles or applications of different units.
Example: Factory Switch 1.
Managed Redundant Switch
[Serial no. of this switch]
Switch Location
Setting Description Factory Default
Max. 80
characters
This option is useful for differentiating between
the locations of different units. Example:
production line 1.
Switch Location
Switch Description
Setting Description Factory Default
Max. 30
characters
This option is useful for recording a more
detailed description of the unit.
None
Maintainer Contact Info
Setting Description Factory Default
Max. 30
characters
This option is useful for providing information
about who is responsible for maintaining this
unit and how to contact this person.
None

PT-7828 User’s Manual Featured Functions
3-4
Password
The PT-7828 provides two levels of configuration access. The admin account has read/write
access of all configuration parameters, and the user account has read access only. The user
account can only view the configuration, but will not be able to make modifications.
ATTENTION
By default, no password is assigned to the PT-7828’s web, Telnet, and serial consoles. If a
password is assigned, you will be required to enter the password when you open the serial
console, Telnet console, or Web console.
Account
Setting Description Factory Default
Admin This account can modify the PT-7828’s
configuration. admin
User This account can only view the PT-7828’s
configurations.
Password
Setting Description Factory Default
Old password
(max. 16 characters)
Enter the current password None
New password
(Max. 16 characters)
Enter the desired new password. Leave it blank if
you want to remove the password.
None
Retype password
(Max. 16 characters)
Enter the desired new password again. Leave it
blank if you want to remove the password.
None