Moxa Technologies PowerTransPT-7728-PTP User Manual

Moxa PowerTrans Switch PT-7728-PTP

First Edition, September 2010

www.moxa.com/product

© 2010 Moxa Inc. All rights reserved.

Reproduction without permission is prohibited.

Moxa PowerTrans Switch PT-7728-PTP

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.

Moxa provides this document as is, without warranty of any kind, either expre sse d or i mplie d, inclu ding, but n ot limited
to, its particular purpose. Moxa reserves the right to make improvements and/or changes to this manual, or to the
products and/or the programs described in this manual, at any time.

Information provided in this manual is intended to be accurate and reliable. However, Moxa assumes no responsibility for
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This product might include unintentional technical or typographical errors. Changes are periodically made to the
information herein to correct such errors, and these changes are incorporated into new editions of the publication.

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Fax: [phone]

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Table of Contents

1. Introduction ...................................................................................................................................... 1-1

Overview ........................................................................................................................................... 1-2

Package Checklist ............................................................................................................................... 1-2

Software Features .............................................................................................................................. 1-2

2. Getting Started ................................................................................................................................. 2-1

Serial Console Configuration (115200, None, 8, 1, VT100) ....................................................................... 2-2

Configuration by Telnet Console .................................................................................................... 2-4

Configuration by Web Browser ............................................................................................................. 2-6

Disabling Telnet and Browser Access ..................................................................................................... 2-7

3. Featured Functions ........................................................................................................................... 3-1

Configuring Basic Settings ................................................................................................................... 3-2

System Identification ................................................................................................................... 3-2

Password ................................................................................................................................... 3-2

Accessible IP ............................................................................................................................... 3-3

Port ........................................................................................................................................... 3-4

Network ..................................................................................................................................... 3-5

IPv4 .......................................................................................................................................... 3-6

IPv6 .......................................................................................................................................... 3-6

GARP Timer Parameters ............................................................................................................... 3-7

Time .......................................................................................................................................... 3-8

Daylight Saving Time ................................................................................................................... 3-8

Configuring IEEE 1588/PTP .................................................................................................................. 3-9

PTP Setting ............................................................................................................................... 3-10

System File Update—By Remote T FT P .......................................................................................... 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 .......................................................................................................................... 3-15

The Port Trunking Concept ......................................................................................................... 3-16

Configuring Port Trunking ........................................................................................................... 3-16

Configuring SNMP ............................................................................................................................. 3-17

SNMP Read/Write Settings.......................................................................................................... 3-18

Trap Settings ............................................................................................................................ 3-20

Private MIB information.............................................................................................................. 3-20

Using Communication Redundancy ..................................................................................................... 3-21

The Turbo Ring Concept ............................................................................................................. 3-21

Configuring Turbo Ring and Turbo Ring V2 ................................................................................... 3-24

The Turbo Chain Concept ................................................................................................................... 3-28

Configuring “Turbo Chain” ................................................................................................................. 3-28

Head Switch Configuration ......................................................................................................... 3-28

Member Switch Configuration ..................................................................................................... 3-29

Tail Switch Configuration ............................................................................................................ 3-29

Explanation of “Current Status” Items .......................................................................................... 3-29

The STP/RSTP Concept .............................................................................................................. 3-30

Configuring STP/RSTP ................................................................................................................ 3-33

Using Traffic Prioritization .................................................................................................................. 3-35

The Traffic Prioritization Concept ................................................................................................. 3-35

Configuring Traffic Prioritization .................................................................................................. 3-37

Using Virtual LAN .............................................................................................................................. 3-39

The Virtual LAN (VLAN) Concept .................................................................................................. 3-40

Sample Applications of VLANs using the PT-7728-PTP .................................................................... 3-42

Configuring Virtua l L AN .............................................................................................................. 3-43

Using Multicast Filtering ..................................................................................................................... 3-44

The Concept of Multicast Filtering ................................................................................................ 3-44

Configuring IGMP Snooping ........................................................................................................ 3-47

Add Static Multicast MAC ............................................................................................................ 3-48

Configuring GMRP ..................................................................................................................... 3-48

GMRP Table .............................................................................................................................. 3-49

Using Bandwidth Management ............................................................................................................ 3-49

Broadcast Storm Protection ........................................................................................................ 3-49

Traffic Rate Limiting Settings ...................................................................................................... 3-50

Using Port Access Control .................................................................................................................. 3-50

Configuring Static Port Lock ........................................................................................................ 3-51

Configuring IEEE 802.1X ............................................................................................................ 3-51

Using IP Filter .................................................................................................................................. 3-54

Using Auto Warning .......................................................................................................................... 3-54

Configuring Email Warning ......................................................................................................... 3-54

Event Type ............................................................................................................................... 3-55

Email Setup .............................................................................................................................. 3-56

Configuring Relay Warning ......................................................................................................... 3-57

Event Setup .............................................................................................................................. 3-57

Warning List ............................................................................................................................. 3-58

Using Line-Swap-Fast-Recovery .......................................................................................................... 3-58

Configuring Line-Swap Fast Recovery .......................................................................................... 3-58

Using Set Device IP........................................................................................................................... 3-58

Configuring Set Device IP ........................................................................................................... 3-59

DHCP Relay Agent (Opt ion 82) ........................................................................................................... 3-60

Using Diagnosis ................................................................................................................................ 3-62

Mirror Port ................................................................................................................................ 3-62

Ping ......................................................................................................................................... 3-62

LLDP Function Overview .................................................................................................................... 3-63

LLDP Web Interface ................................................................................................................... 3-63

LLDP Settings ........................................................................................................................... 3-63

LLDP Table ............................................................................................................................... 3-63

Using Monitor ................................................................................................................................... 3-64

Monitor by Switch ...................................................................................................................... 3-64

Monitor by Port ......................................................................................................................... 3-64

Using the MAC Address Table ............................................................................................................. 3-65

Using System Log ............................................................................................................................. 3-65

Event Log ................................................................................................................................. 3-65

Syslog ..................................................................................................................................... 3-66

Using HTTPS/SSL .............................................................................................................................. 3-67

A. MIB Groups ....................................................................................................................................... A-1

B. Specifications .................................................................................................................................... B-1

C. Modbus/TCP Map .............................................................................................................................. C-1

1

1. Introduction

Welcome to the PowerTrans PT-7728-PTP, 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-7728-PTP Introduction

1-2

Overview

The PowerTrans PT-7728-PTP is certified for use in power substation automation systems (IEC 61850-3, IEEE

1613), 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 reliabil ity of communication.

The PT-7728-PTP 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-7728-PTP suitable for different applications.

Package Checklist

The PowerTrans PT-7728-PTP is shipped with the following items. If any of these items is missing or damaged,
please contact your customer service representative for assistance.

• 1 PowerTrans PT-7728-PTP

• Hardware installation guide

• CD-ROM with user’s manual and SNMP MIB file

• Warranty statement

• RJ45-to-DB9 console port cable

• Protective caps for unused ports

• 2 rackmount attachments

Software Features

• Turbo Ring, Turbo Chain, and RSTP/STP (IEEE 802.1W/D)

• IEEE 1588 v2 PTP (Precision Time Protocol) for precise time synchronization of networks

• DHCP Option 82 for IP address assignment for different policies

• Supports Modbus TCP for easy integration in HMI

• Supports LLDP (Link Layer Discovery Protocol)

• IGMP snooping, GMRP to filter multicast traffic from industrial Ethernet protocols

• IEEE 802.1Q VLAN, GVRP for easier network planning

• QoS-IEEE 802.1p/1Q and TOS/DiffServ to increase determinism

• 802.3ad, LACP for bandwidth optimization

• IEEE 802.1X and https/SSL to enhance ne twork security

• SNMP V1/V2c/V3 for differential network management

• RMON for efficient, proactive network monitoring

• Supports ABC-01 for system configuration backup

• Access restriction by MAC address

• Port mirroring for online debugging

• Automatic warnings by email, relay output

• Automatic recovery of connected device’s IP addresses

• Line-swap fast recovery

• Configuration through web browser, Telnet/serial console, Windows utility, and ABC-01

2

2. Getting Started

This chapter covers the initial installation proces s for the PT-7728-PTP. There are three ways to access the
PT-7728-PTP’s configuration settings: serial console, Telnet console, and web console. If you do not know the
PT-7728-PTP’s IP address, you can open the serial console by connecting the PT-7728-PTP 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 in this chapter:



Serial Console Configuration (115200, None, 8, 1, VT100)

 Configuration by Telnet Console



Configuration by Web Browser



Disabling Telnet and Browser Access

PT-7728-PTP Getting Started

2-2

Serial Console Configuration (115200, None, 8,
1, VT100)

NOTE • You cannot connect to the serial and Telnet console at the same time.

• You 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-7728-PTP’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-7728-PTP’s console port to your PC’s COM port (generally COM1 or COM2, depending on how your sys tem
is set up).

After installing PComm Terminal Emulator, open the PT-7728-PTP’s serial console as follows:

1. From the Windows desktop, click Start

 Programs  PComm Lite 1.3  Terminal Emulator.

2. Select Open under the Port Manager menu to open a new connection.

3. The Property window should open. On the Communication Para meter 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,
8 for Data Bits, None for Parity, and 1 for Stop Bits.

PT-7728-PTP Getting Started

2-3

4. On the Terminal tab, select VT100 for Terminal Type. Click OK.

5. In the terminal window, the PT-7728-PTP will prompt you to select a termina l type. Enter 1 to select
ansi/vt100 and press Enter.

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-7728-PTP’s serial console should appear. (In PComm Terminal Emulator, you can
adjust the font by selecting Font… in the Edit menu.)

PT-7728-PTP Getting Started

2-4

8. Use the following keys on your keyboard to navigate the PT-7728-PTP’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

Configuration by Telnet Console

You may open the PT-7728-PTP’s Telnet or web console o ver a network. This requires that the PC host and
PT-7728-PTP are on the same logical subnet. You may need to adjust your PC host’s IP address a n d subnet
mask. By default, the PT-7728-PTP’s IP address is 192.168.127.253 and PT-7728-PTP’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-7728-PTP’s Telnet or web console, your PC host and the PT-7728-

PTP must be on the

same logical subnet.

NOTE When connecting to the PT-7728-PTP’s Telnet or web console, first connect one of PT-7728-PTP’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-7728-PTP’s default IP address is 192.168.127.253.

After making sure that the PT-7728-PTP is connected to the same LAN and logical subnet as your PC, open the
PT-7728-PTP’s Telnet console as follows:

1. Click Start

 Run from the Windows Start menu. Telnet to the PT-7728-PTP’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.

PT-7728-PTP Getting Started

2-5

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 Men u of the PT-7728-PTP’s Telnet console should appear.

5. In th e terminal window, select Preferences… from the Terminal menu on the menu bar.

6. The Ter m inal Preferences window should appear. Make sure that VT100 Arrows is checked.

7. Use the following keys on your keyboard to navigate the PT-7728-PTP’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.

PT-7728-PTP Getting Started

2-6

Configuration by Web Browser

The PT-7728-PTP’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-7728-PTP’s web console using a
standard web browser such as Internet Explorer or Netscape.

NOTE To connect to the PT-7728-PTP’s Telnet or web console, your PC host and the PT-7728-

PTP must be on the

same logical subnet.

NOTE If the PT-7728-PTP is configured for other VLAN settings, you must make sure your PC host is on the

management VLAN.

NOTE When connecting to the PT-7728-PTP’s Telnet or web console, first connect one of PT-7728-PTP’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-7728-PTP’s default IP address is 192.168.127.253.

After making sure that the PT-7728-PTP is connected to the same LAN and logical subnet as your PC, open the
PT-7728-PTP’s web console as follows:

1. Point your web browser to the PT-7728-PTP’s IP address by entering it in the Address or URL field.

2. The PT-7728-PTP’s web console will open, and you will be pr ompted 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, a password is not assigned to the PT-7728-PTP’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 i n the
left navigation panel to navigate between different pages of configuration options.

PT-7728-PTP Getting Started

2-7

Disabling Telnet and Browser Access

If you are connecting the PT-7728-PTP 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. Featured Functions

This chapter explains how to access the PT-7728-PTP’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 the PT-7728-PTP’s IP address and you need to connect the PT-7728-PTP 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 the PT-7728-PTP. 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



Configuring IEEE 1588/PTP



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



Using System Log



Using HTTPS/SSL

PT-7728-PTP Featured Functions

3-2

Configuring Basic Settings

Basic Settings include the most co mmon settings required by administrators to maintain and control the
PT-7728-PTP.

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 maintain in g this unit and how to contact this
person.

None

Password

The PT-7728-PTP 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 w ill not be able to make modifications.

PT-7728-PTP Featured Functions

3-3

ATTENTION

By default, a password is not assigned to the PT-7728-PTP

’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-7728-PTP’s configuration. admin
User This account can only view the PT-7728-PTP’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

Accessible IP

The PT-7728-PTP uses an IP address-based filter ing method to control access.

You may add or remove IP addresses to limit access to the PT-7728-PTP. When the accessible IP list is enabled,
only addresses on the list will be allowed access to the PT-7728-PTP. Each IP address and netmask entry can
be tailored for different situations:

• Grant access to one host with a specific IP address
For example, enter IP address 192.168.1.1 wi th netmask 255.255.255.255 to allow access to 192. 168.1.1
only.

• Grant access to any host on a specific subnetwork
For example, enter IP address 192.168.1.0 with netmask 255.255.255.0 to allow access to all IPs on the
subnet defined by this IP address/sub n et mask combination.

• Grant acces to all hosts
Make sure the accessible IP list is not enabled. Remove the checkmark from Enable the accessible IP
list.

The following table shows additional configuration examples:

Hosts That Need Access Input Format

Any host Disable

192.168.1.120 192.168.1.120 / 255.255.255.255

PT-7728-PTP Featured Functions

3-4

192.168.1.1 to 192.168.1.254 192.168.1.0 / 255.255.255.0

192.168.0.1 to 192.168.255.254 192.168.0.0 / 255.255.0.0

192.168.1.1 to 192.168.1.126 192.168.1.0 / 255.255.255.128

192.168.1.129 to 192.168.1.254 192.168.1.128 / 255.255.255.128

Port

Port settings are included to give the user control ove r port access, port transmission speed, f low control, and

port type (MDI or MDIX).

Enable

Setting Description Factory Default

Checked Allows data transmission through the port. Enabled
Unchecked Immediately shuts off port access.

ATTENTION

If a connected device or sub-network is wreaking havoc on the rest of the network, the Disable

option under

Advanced Settings/Port gives the administrator a quick way to shut off access through this port
immediately.

Description

Setting Description Factory Default

Media type Displays the media type for each module’s port N/A

Name

Setting Description Factory Default

Max. 63 characters Specifies an alias for the port to help administrators

differentiate between different ports. Example: PLC 1

None

Speed

Setting Description Factory Default

Auto Allows the port to use the IEEE 802.3u protocol to negotiate

with connected devices. The port and co nnected devices will
determine the best speed for that connection.

Auto

100M-Full Choose one of these fixed speed options if the connected

Ethernet device has trouble auto-negotiatin g for line speed.

100M-Half
10M-Full
10M-Half

PT-7728-PTP Featured Functions

3-5

FDX Flow Ctrl

Setting Description Factory Default

Enable E

nables flow control for this port when the por t's Speed is set to

Auto.

Disable

Disable D

isables flow control for this port when the port's Speed is set

to Auto.

This setting enables or disables flow control for the port when the port's Speed is set to Auto. The final result
will be determined by the Auto process between the PT-7728-PTP and connected devices.

MDI/MDIX

Setting Description Factory Default

Auto Allows the port to auto-detect the port type of the connected

Ethernet device and change the port type accordingly.

Auto

MDI Choose MDI or MDIX if the connected Ether net device has

trouble auto-negotiating for port type.

MDIX

Network

The Network configuration page allows users to configure both IPv4 and IPv6 parameters for management
access over the network. This Moxa Ethernet switch supports both IPv4 and IPv6, and can be managed through
either of these address types. An expla na tion of each configuration item follows.

IPv4

IPv4 settings include the switch’s IP address and subnet mask, as well as the IP address of the default gateway.
In addition, input cells are provided for the IP addresses of a 1st and 2nd DNS server.

IPv6

IPv6 settings include two distinct address types: Link-Local Unicast address and Global Unicast address. A
Link-Local address makes the switch accessible over IPv6 for all devices attached to the same local subnet. To
connect to a larger network with multiple segments, the switch must be configured with a Global Unicast
address.

PT-7728-PTP Featured Functions

3-6

IPv4

Auto IP Configuration

Setting Description Factory Default

Disable Select this to set the PT-7728-PTP’s IP address manually. Disable
By DHCP The PT-7728-PTP’s IP address will be assigned automatically by

the network’s DHCP server.

By BootP The PT-7728-PTP’s IP address will be assigned automatically by

the network’s BootP server.

Switch IP Address

Setting Description Factory Default

IP address for the
PT-7728-PTP

This assigns the PT-7728-PTP's IP address on a TCP/IP
network.

192.168.127.253

Switch Subnet Mask

Setting Description Factory Default

Subnet mask for the
PT-7728-PTP

This identifies the type of network to which the PT-7728-PTP is
connected (e.g., 255.255.0.0 for a Class B network, or

255.255.255.0 for a Class C network).

255.255.255.0

Default Gateway

Setting Description Factory Default

IP address for gateway This specifies the IP address of the router that connects the LAN

to an outside network.

None

DNS IP Address

Setting Description Factory Default

IP address for DNS
server

This specifies the IP address of the DNS server used by your

network. After specifying the DNS server’s IP address, you can

use the PT-7728-PTP’s URL (e.g., www.PT. c ompany.com) to
open the web console instead of entering the IP address.

None

IP address for 2nd DNS
server

This specifies the IP address of the secondary DNS server used
by your network. The PT-7728-PTP will use the secondary DNS
server if the first DNS server fails to co n nect.

None

IPv6

Global Unicast Address Prefix (Prefix Length: 64 bits)

Setting Description Factory Default

Global Unicast Address
Prefix

The prefix value must be formatted according to RFC 2373
“IPv6 Addressing Architecture,” using 8 colon-separated 16-bit
hexadecimal values. One double colon may be used in the
address to indicate the appropriate number of zeros required to
fill the undefined fie lds.

None

Global Unicast Address

Setting Description Factory Default

None Display an IPv6 Global Unicast address. The network portion of

a Global Unicast address can be configured by specifying the
Global Unicast Prefix and using a EUI-64 interface ID in the low
order 64 bits. The host portion of a Global Unicast address is
automatically generated using the modified EUI-64 form of the
interface identifier (the switch’ s MA C a d dress)

PT-7728-PTP Featured Functions

3-7

Link-Local Address

Setting Description Factory Default

None The network portion of a Link-Local address is FE80 and the

host portion of a Link-Local address is automatically generated
using the modified EUI-64 form of the interface identifier (the
switch’s MAC address)

FE80: (EUI-64 form
of the MAC address)

Neighbor Cache

Setting Description Factory Default

None The information in the neighbor cache includes the neighboring

node IPv6 address, the corresponding Link-Layer address, and
the current state of the entry.

None

GARP Timer Parameters

General Setting

Setting Description Factory Default

Join Time (ms) Period for sending Join messages 200
Leave Time (ms) Period for sending Leave messages 600
Leaveall Time (ms) Period for sending Leaveall messa ges 10000

PT-7728-PTP Featured Functions

3-8

Time

The PT-7728-PTP has a time calibration function based on information from an NTP server or user specified
time and date. Functions such as automatic warning emails can therefore include time and date stamp.

NOTE The PT-7728-PTP does not have a real time clock. Th e user must update the Current Time and Current

Date to set the initial time for PT-7728-

PTP after each reboot, especially when there is no NTP server on the

LAN or Internet connection.

Current Time

Setting Description Factory Default

User-specified time Allows configuration of the local time in local 24-hour format. 00h:00m:00s

Current Date

Setting Description Factory Default

User-specified date Allows configuration of the local date in yyyy-mm-dd format. 1970/01/01

Daylight Saving Time

The Daylight Saving Time settings are used to automatically offset the PT-7728-PTP’s time forward according
to national standards.

Start Date

Setting Description Factory Default

User-specified date Specifies the date that Daylight Savings Time begins. None

End Date

Setting Description Factory Default

User-specified date Specifies the date that Daylight Savings Time ends. None

Offset

Setting Description Factory Default

User-specified hour Specifies the number of hours that the time should be offset

forward during Daylight Savings Time.

None

System Up Time

Indicates how long the PT-7728-PTP remained up since the last cold start. The up time is indicated in seconds.

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Time Zone

Setting Description Factory Default

Time zone Specifies the time zone, which is used to determine the local

time offset from GMT (Greenwich Mean Time).

GMT (Greenwich
Mean Time)

NOTE Changing the time zone will automatically correct the current time. Make sur e to set the time zone before

setting the time.

Time Server IP/Name

Setting Description Factory Default

IP address or name of
time server

The IP or domain address (e.g., 192.168.1.1,
time.stdtime.gov.tw, or time.nist.gov).

None

IP address or name of
secondary time server

The PT-7728-PTP will try to locate the

secondary NTP server if

the first NTP server fails to connect.

Time Server Query Period

Setting Description Factory Default

Query period This parameter determines how frequently the time is updated

from the NTP server.

600 seconds

Configuring IEEE 1588/PTP

Time synchronization may be accompl ished using the IEEE Standard for a Precision Clock
Synchronization Protocol for Networked Measurement and Control Systems (IEEE 1588-2008) to

synchronize real-time clocks incorporated within each component of the electrical power device in power
automation applications. For IEC 61850-9 operations, digital CTs and PTs provide measured values of current
and voltage through MUs to bay level IEDs with the process bus. In any given system there may be a great
number of MUs operating at once. These different streams of sampled values must be a ccurately
time-synchronized before they can be used.

SNTP is able to provide synchronization accuracy within about 1 ms. However, this is not precise enough for
raw data sampled values. Moxa’s PT-7728-S-PTP IEC 61850-3 fast Ethernet switches support the latest version
of IEEE 1588 v2 technology to fulfill precise time synchronization requirements for protection and control
applications. These Ethernet switches guarantee time-stamping ac c u racy wi t h i n 1 μs for th e IE C 61 850 pr o c e s s
layer. They can be configured for 1558 v2 Master, Boundary Clock, and Transparent Clock functionality.

The following diagram shows a basic IEEE 1588 application hierarchy for substation automation.

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PTP Setting

Operation IEEE 1588/PTP

Setting Description Factory Default

Operation Disable or enable IEEE 1588(PTP) operation Enable

Configuration IEEE 1588/PTP of v1 BC mode

Setting Description Factory Default

Clock Mode Supports v1 BC, IEEE 1588(PTP) mode Disabled
logSyncInterval Period for sending synchronization messages (in s econds) Disabled
logMinDelayReqInterval Period for sending delay requests (in seconds) 0 (1 sec)
Subdomain Name Support _DFLT(Default), _ALT1, _ALT2 and _ALT3 domain _DFLT
Transport of PTP 802.3, IPv4 IPv4
Preferred Master Prefer to be the master role False

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Status

Setting Description Factory Default

Offset To Master (nsec) Deviation between local time and the reference clock (in

nanoseconds).

Grandmaster UUID When the clock has a port in PTP_SLAVE state, this member’s

value is the value of the grand master Clock's Uuid field of the
last Sync message received from the parent of the slave port.

Parent UUID When the clock has a port in PTP_SLAVE state, this me mber’s

value is the value of the source-Uu id field of the last Sync
message received from the parent of the slave port.

Clock Stratum The stratum number describes one measure of the quality of a

clock. Each clock is characterized by a stratum number used by
the best master clock algorithm as one parameter of clock
quality.

4

Clock Identifier Properties of the clock. DFLT

PTP Port Settings

Setting Description Factory Default

Port Enable Enable or disable PTP port operation. None
Port Status Display PTP port real status. PTP_DISABLED

Configuration IEEE 1588/PTP of v2 E2E 2-step TC, v2 E2E 1-step TC and v2 P2P 2-step TC mode

Setting Description Factory Default

Clock Mode Supports v1 BC, IEEE 1588(PTP) mode Disabled
logSyncInterval Period for sending synchro niz ation me ssa g es (in seconds) 0 (1sec)
logMinDelayReqInterval Period for sending minimum delay requests (in seconds) 0 (1 sec)
logMinPdelayReqInterval Period for sending minimum Pdelay requests (in seconds) 0 (1 sec)
Domain Number Support _DFLT(Default), _ALT1, _ALT2 and _ALT3 domain 0 (_DFLT)
Transport of PTP 802.3, IPv4 IPv4
Preferred Master Prefer to be the master role False
priority1 (0~255) Parameter 1 of priority for Grandmaster 128
Priority2 (0~255) Parameter 2 of priority for Grandmaster 128

Status

Setting Description Factory Default

clockIdentity Properties of the clock

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PTP Port Settings

Setting Description Factory Default

Port Enable Enable or disable PTP port operation. None
Port Status Display PTP port real status. PTP_DISABLED

Configuration IEEE 1588/PTP of v2 E2E BC and P2P BC mode

Setting Description Factory Default

Clock Mode Supports v1 BC, IEEE 1588(PTP) mode Disabled
logSyncInterval Period for sending synchronization messages (in seconds) 0 (1 sec)
logAnnounceInterval Period for sending announcements (in seconds) 1 (2 sec)
announceReceiptTimeout Receive announce timeout 3
logMinDelayReqInterval Period for sending minimum delay requests (in seconds) 0 (1 sec)
logMinPdelayReqInterval Period for sending minimum Pdelay requests (in seconds) 0 (1 sec)
Domain Number Support _DFLT(Default), _ALT1, _ALT2 and _ALT3 domain 0 (_DFLT)
Transport of PTP 802.3, IPv4 IPv4
priority1 (0~255) Parameter 1 of priority for Grandmaster 128
Priority2 (0~255) Parameter 2 of priority for Grandmaster 128
clockClass Accuracy level of clock 248
clockAccuracy Accuracy of clock 0x21
Timescale Support PTP ARB, PTP
ARB Time ARB Ti ming count mode 0
Leap59 Last minute of a day is counted to 59 seconds False

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Leap61 Last minute of a day is counted to 61 seconds False
UTC Offset Valid Enable/Disable UTC offset function False
UTC Offset Value of UTC offset 0

Status

Current Data Set

Setting Description Factory Default

Offset To Master(nsec) Display offset (delay time) between Master and Slave 0
Mean Path Delay(nsec) Display mean path delay time 0
Step Removed Display number s of step removed 1

Parent Data Set

Setting Description Factory Default

Parent Identity Display the parent device MAC address
Grandmaster Identity Display the Grandmaster MAC address
Grandmaster
clockClass

Display the Grandmaster clock class

Grandmaster
clockAccuracy

Display the Grandmaster clock accuracy information

Grandmaster priority1 Display Grandmaster priority 1
Grandmaster priority2 Display Grandmaster priority 2

Time Data Set

Setting Description Factory Default

Current UTC Offset
Valid

Display the status of Current UTC Offset Valid

Current UTC Offset Display Current UTC Offset value
Leap59 Display the status of Leap 59
Leap61 Display the status of Leap 61
Timescale Display the status of Timescale
Time Source Display the status of Time Source

PTP Port Settings

Setting Description Factory Default

Port Enable Enable or disable PTP port operation. None
Port Status Display PTP port real status. PTP_DISABLED

System File Update—By Remote TFTP

The PT-7728-PTP supports saving your configuration or log file to a remote TFTP server or local host. Other
PT-7728-PTP switches can also load the configuration at a later time. The PT-7728-PTP also supports loading
firmware or configuration files from the TFTP server or a local host.

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TFTP Server IP/Name

Setting Description Factory Default

IP address of TFTP
server

Specifies the IP address or name of the remote TFTP server;
must be specified before downloading or uploading files.

None

Configuration Files Path and Name

Setting Description Factory Default

Max. 40 characters Specifies the path and file name of the PT -7728-PTP’s

configuration file on the TFTP server.

None

Firmware Files Path and Name

Setting Description Factory Default

Max. 40 characters Specifies the path and file name of the PT-7728-PTP’s firmware

file.

None

Log Files Path and Name

Setting Description Factory Default

Max. 40 characters Specifies the path and file name of the PT -7728-PTP’s log file. None

After setting the desired paths and file names, click Activate to save the setting. Click Download to download
the prepared file from the remote TFTP server, or click Upload to upload the desired file to the remote TFTP
server.

System File Update—By Local Import/Export

Configuration File

Click Export to save the PT-7728-PTP’s configuration file to the local host.

Log File

Click Export to save the PT-7728-PTP ’s log file to the local host.

NOTE

Some operating systems will open the configuration file and log file directly in the web page. In such cases,

right click the Export button to save the file.

Upgrade Firmware

To import a new firmware file onto the PT-7728-PTP, click Browse to select the firmware file that is saved on
your computer. The upgrade procedur e will proceed automatically after clicking Import.

Upload Configure Data

To import a configuration file onto the PT-7728-PTP, click Browse to select the configuration file already saved
on your computer. The upgrade procedure will proceed automatically after clicking Import.