Moxa Technologies ToughNet Switch TN-5500, ToughNet Switch TN-5518, TN-5516, TN-5518 User Manual

Moxa ToughNet Switch TN-5500/5518 Series

Layer 2 M12 managed 16/16+2G-port Ethernet Switches

User’s Manual

www.moxa.com/product

First Edition, October 2009

© 2009 Moxa Inc. All rights reserved.

Reproduction without permi ssion is pr ohibited.

Moxa ToughNet Switch

TN-5500/5518 Series 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 © 2009 Moxa Inc.

All rights reserved.

Reproduction without permi ssion is pr ohibited.

Trademarks

Moxa is a registered trademark of Moxa Inc.

All other trademarks or registered marks in this manual belong to their respective manufacturers.

Disclaimer

Information in this document is subject to change without notice and does not represent a commitment on the
part of Moxa.

Moxa provides this document “as is,” without warranty of any kind, either expressed or implied, including, but
not 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 its use, or for any infringements on the rights of third parties that may result from its use.

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.

Technical Support Contact Information

www.moxa.com/support

Moxa Americas:
Toll-free: 1-888-669-2872
Tel: [phone]
Fax: [phone]

Moxa China (Shanghai office)

:
Toll-free: 800-820-5036
Tel: [phone]
Fax: [phone]

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Table of Contents

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

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

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

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

Recommended Optional Accessories...................................................................... 1-3

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

RS-232 Console Configuration (1 15200, No ne, 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....................................................................................... 3-2

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

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

Accessible IP.................................................................................................3-4

Port Settings.................................................................................................. 3-5

Network Settings ........................................................................................... 3-7

Neighbor Cache........................................................................................... 3-10

System Time Settings..................................................................................3-11

Daylight Saving Time................................................................................... 3-12

Configuring IEEE 1588/PTP........................................................................ 3-13

System File Update—By Remote TFTP...................................................... 3-16

System File Update—By Local Import/Export............................................. 3-17

System File Update—By Backup Media ..................................................... 3-17

Restart.........................................................................................................3-18

Factory Default............................................................................................3-18

Using Port Trunking...............................................................................................3-19

The Port Trunking Concept ......................................................................... 3-19

Configuring Port Trunking ...........................................................................3-20

Configuring SNMP................................................................................................. 3-22

SNMP Read/Write Settings.........................................................................3-23

Trap Settings...............................................................................................3-25

Private MIB information...............................................................................3-26

Using Communication Redundancy......................................................................3-26

The Turbo Ring Concept............................................................................. 3-27

Configuring Turbo Ring, Turbo Ring V2...................................................... 3-32

The Turbo Chain Concept...........................................................................3-37

Configuring Turbo Chain ............................................................................. 3-39

The STP/RSTP Concept............................................................................. 3-42

Configuring STP/RSTP................................................................................3-47

Using Traffic Prioritization...................................................................................... 3-49

The Traffic Prioritization Concept................................................................3-49

Configuring Traffic Prioritization..................................................................3-52

Using Virtual LAN...................................................................................................3-55

The Virtual LAN (VLAN) Concept................................................................3-55

Sample Applications of VLANs using TN-5500........................................... 3-57

Configuring Virtual LAN............................................................................... 3-58

Using Multicast Filtering......................................................................................... 3-61

The Concept of Multicast Filtering............................................................... 3-61

Configuring IGMP Snooping........................................................................ 3-64

Add Static Multicast MAC............................................................................ 3-66

Configuring GMRP ...................................................................................... 3-67

GMRP Table................................................................................................ 3-67

Using Bandwidth Management.............................................................................. 3-68

Configuring Bandwidth Management..........................................................3-68

Broadcast Storm Protection ........................................................................3-68

Traffic Rate Limiting Settings ......................................................................3-69

Using Port Access Control.....................................................................................3-70

Configuring Static Port Lock........................................................................ 3-72

Configuring IEEE 802.1X ............................................................................ 3-72

Using Auto Warning...............................................................................................3-75

Configuring Email Warning.......................................................................... 3-75

Event Type .................................................................................................. 3-76

Email Setup.................................................................................................3-77

Configuring Relay Warning .........................................................................3-78

Event Setup.................................................................................................3-79

Warning List................................................................................................. 3-80

Using Line-Swap-Fast-Recovery........................................................................... 3-80

Configuring Line-Swap Fast Recovery........................................................ 3-80

Using Set Device IP............................................................................................... 3-81

Configuring Set Device IP ........................................................................... 3-82

Configuring DHCP Relay Agent..................................................................3-82

Using Diagnosis.....................................................................................................3-85

Mirror Port.................................................................................................... 3-85

Ping..............................................................................................................3-86

LLDP............................................................................................................ 3-86

Using the Monitor................................................................................................... 3-88

Monitor by Switch........................................................................................3-88

Monitor by Port............................................................................................3-88

Using the MAC Address Table............................................................................... 3-89

Using Event Log .................................................................................................... 3-90

Using Syslog.......................................................................................................... 3-91

Using HTTPS/SSL.................................................................................................3-92

Chapter 4 EDS Configurator GUI...............................................................................4-1

Starting EDS Configurator.......................................................................................4-2

Broadcast Search....................................................................................................4-3

Search by IP address .............................................................................................. 4-4

Upgrade Firmware...................................................................................................4-5

Modify IP Address.................................................................................................... 4-6

Export Configuration................................................................................................ 4-7

Import Configuration................................................................................................4-9

Unlock Server ........................................................................................................ 4-10

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

Appendix B Modbus/TCP Map .....................................................................................B-1

Modbus Information.......................................................................................B-1

Appendix C Specifications...........................................................................................C-1

1

1

Chapter 1 Introduction

Welcome to the Moxa ToughNet Switch TN-5500 Series, a managed redundant 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
 Recommended Optional Accessories

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Overview

The ToughNet TN-5516/5518 series M12 managed Ethernet switches are designed for industrial
applications in harsh environments. The TN series switches use M12 and other circular connectors
to ensure tight, robust connections, and guarantee reliable operation against environmental
disturbances, such as vibration and shock. The wide selection of 12/24/36/48 VDC, 72/96/110
VDC, or 110/220 VDC/VAC dual redundant power supplies increases the reliability of your
communications. TN-5500 switches provide up to 16 fast Ethernet M12 ports.

TN-5518 switches provide up to 16 fast Ethernet M12 ports, and 2 Gigabi t Et her net po rts on the
bottom panel which provide a bypass relay option. Models with an extended operating temperature
range of -40 to 75°C are also available. The TN-5500/5518 series Ethernet switches are compliant
with EN50155/50121-3-2/50121-4 (railway applications), NEMA TS2 (traffic control systems),
and e-Mark (vehicles) requirements, making the switches suitable for a variety of industrial
applications.

Package Checklist

The TN-5500 Series is shipped with the following items. If any of these items is missing or
damaged, please contact your customer service representative for assistance.

y 1 Moxa ToughNet Switch TN-5500
y Hardware installation guide
y CD-ROM with user’s manual, Windows utility, and SNMP MIB file
y Moxa product warranty statement
y M12-to-DB9 console port cable
y 2 protective caps for console and relay output ports
y Panel mounting kit

Software Features

y IPv6 Ready ceritifed by the IPv6 Logo Committee
y IEEE 1588 PTP (Precision Time Protocol) for precise time synchronization of networks
y DHCP Option 82 for IP address assignment with different policies
y Modbus/TCP industrial Ethernet protocol
y Turbo Ring, Turbo Chain, and RSTP/STP (IEEE 802.1w/D)
y IGMP snooping, GMRP to filter multicast traffic from industrial Ethernet protocols
y IEEE 802.1Q VLAN, Port-based VLAN,GVRP for easier network planning
y QoS-IEEE 802.1p/1Q and TOS/DiffServ to increase determinism
y 802.3ad, LACP for bandwidth optimization
y IEEE 802.1X and https/SSL to enhance network security
y SNMP V1/V2c/V3 for different levels of network management
y RMON for efficient, proactive network monitoring
y Bandwidth management prevents unpredictable network status
y Lock port for authorized MAC address access only
y Port mirroring for online deb u gging
y Automatic warnings by exception through email, relay output

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y Automatic recovery of connected device’s IP addresses
y Line-swap fast recovery
y LLDP for automatic topology discovery in network management software
y Configurable by Web browser, Telnet/serial console, and Windows utility

Recommended Optional Accessories

y CBL-M23(FF5P)Open-BK-100-IP67: 1-meter M23-t o-5-pin power cable with IP67-rated

female 5-pin M23 connector.

y CBL-M12D(MM4P)/RJ45-100 IP67: 1-meter M12-to-RJ45 Cat-5E UTP Ethernet cable with

IP67-rated male 4-pin M12 D-coded connector.

y CBL-M12(FF5P)/OPEN-100 IP67: 1-meter M12-to-5-pin power cable with IP67-rated

female 5-pin M12 A-coded connector.

y M12D-4P-IP68: Field-installable M12 D-coded screw-in connector, male 4-pin, IP68-rated.
y M12A-5P-IP68: Field-installable M12 A-coded screw-in connector, female 5-pin, IP68-rated.
y A-CAP-M12F-MIP67-PAK04: Cap for M12 D-coded female 4-pin connector, metal, IP67, 4

pieces in one pack.

y DK-DC50131: DIN-Rail mounting kit, 50 x 131 mm.

2

2

Chapter 2 Getting Started

This chapter explains the initial installation process for the TN-5500. There are three ways to
access the TN-5500’s configuration settings: the serial console, Telnet console, and web console.
If you do not know the TN-5500’s IP address, you can open the serial conso le by connecting the
TN-5500 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:

 RS-232 Console Configuration (115200, None, 8, 1, VT100)
 Configuration by Telnet Console
 Configuration by Web Browser
 Disabling Telnet and Browser Access

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RS-232 Console Configuration (115200, None, 8, 1, VT100)

NOTE

y You cannot connect to the serial and Telnet console at the same time.
y 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 TN-5500’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 M12 to DB9-F (or M12 to DB25-F) cable to
connect the TN-5500’s console port to your PC’s COM port (gen erally COM1 or COM2,
depending on how your system is set up).

After installing PComm Terminal Emulator, open the TN-5500’s serial console as follows:

1. From the Windows desktop, click Start Æ Programs Æ PComm Lite 1.3 Æ Terminal

Emulator.

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

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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, 8 for Data Bits, None for Parity, and 1 for Stop Bits.

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

5. In the terminal window, the TN-5500 will prompt you to select a terminal type. Enter 1 to

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 TN-5500’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 TN-5500’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

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Configuration by Telnet Console

You may open the TN-5500’s Telnet or web console over a network. This requires that the PC
host and TN-5500 are on the same logical subnet. You may need to adjust your PC host’s IP
address and subnet mask. By default, the TN-5500’s IP address is 192.168.127.253 and TN-5500’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 192.168.127.xxx with a subnet mask of 255.255.255.0.

NOTE

To connect to the TN-5500’s Telnet or web console, your PC host and the TN-5500 must be on
the same logical subnet.

NOTE

When connecting to the TN-5500’s Telnet or web console, first connect one of TN-5500’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 TN-5500’s default IP address is 192.168.127.253.

After making sure that the TN-5500 is connected to the same LAN and logical subnet as your PC,
open the TN-5500’s Telnet console as follows:

1. Click Start Æ Run from the Windows Start menu. Telnet to the TN-5500’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 TN-5500’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.

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7. Use the following keys on your keyboard to navigate the TN-5500’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 TN-5500’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 TN-5500’s web
console using a standard web browser such as Internet Explorer or Netscape.

NOTE

To connect to the TN-5500’s Telnet or web console, your PC host and the TN-5500 must be on
the same logical subnet.

NOTE

If the TN-5500 is configured for other VLAN settings, you must make sure your PC host is on
the management VLAN.

NOTE

When connecting to the TN-5500’s Telnet or web console, first connect one of TN-5500’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 TN-5500’s default IP address is 192.168.127.253.

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After making sure that the TN-5500 is connected to the same LAN and logical subnet as your PC,
open the TN-5500’s web console as follows:

1. Point your web browser to the TN-5500’s IP address by entering it in the Address or URL

field.

2. The TN-5500’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 TN-5500’s web, serial, and Telnet consoles.

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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.

Disabling Telnet and Browser Access

If you are connecting the TN-5500 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 TN-5500’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 TN-5500’s IP address and requires that you connect
the TN-5500 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 TN-5500. 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
 Using Port Trunking
 Configuring SNMP
 Using Communication Redundancy
 Using Traffic Prioritization
 Using Virtual LAN
 Using Multicast Filtering
 Using Bandwidth Management
 Using Port Access Control
 Using Auto Warning
 Using Line-Swap-Fast-Recovery
 Using Set Device IP
 Using Diagnosis
 Using the Monitor
 Using the MAC Address Table
 Using Event Log
 Using Syslog
 Using HTTPS/SSL

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Configuring Basic Settings

Basic Settings includes the most common settings required by administrators to maintain and
control the TN-5500.

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

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Maintainer Contact Info

Setting Description Factory Default

Max. 30
characters

This option is useful for providi ng in fo rmation
about who is responsible for maintaining this
unit and how to contact this person.

None

Web Configuration

Setting Description Factory Default

http or https/
disable

Use this to enable or disable the Web
management function.

http or https

Web Auto-logout(s)

Setting Description Factory Default

Auto-logout
timer

This specifies the timer in seconds for
auto-logout of the Web console if the user has
not operated it.

0 for disable this function

Age Time(s)

Setting Description Factory Default

Age timer This specifies the timer in seconds for the

switch to flush its MAC address table.

300

Password

The TN-5500 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 TN-5500’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.

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Account

Setting Description Factory Default

Admin This account can modify the TN-5500’s

configuration.

User This account can only view the TN-5500’s

configurations.

admin

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 TN-5500 uses an IP address-based filtering method to control access.

You may add or remove IP addresses to limit access to the TN-5500. When the accessible IP list is
enabled, only addresses on the list will be allowed access to the TN-5500. Each IP address and
netmask entry can be tailored for different situations:

y Grant access to one host with a specific IP address

For example, enter IP address 192.168.1.1 with netmask 255.255.255.255 to allow access to

192.168.1.1 only.

y 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/subnet mask combination.

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y 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

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 Settings

Port Settings are included to give the user control over port access, port transmission speed, flow
control, and port type (MDI or MDIX).

Note: Ports E1 and E2 on the bottom panel correspond to ports 17 and 18 in the
configuration pages in this user's manual.

Enable

Setting Description Factory Default

Checked This allows data transmission through the port.
Unchecked This immediately shuts off port access.

Enabled

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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 This displays the media type for each port. N/A

Name

Setting Description Factory Default

Max. 63 characters This specifies an alias for the port to help

administrators differentiate between different
ports. Example: PLC 1

None

Speed

Setting Description Factory Default

Auto This allows the port to use the IEEE 802.3u

protocol to negotiate with connected devices. The
port and connected devices will determine the

best speed for that connection.
1000M-Full
1000M-Half
100M-Full
100M-Half
10M-Full
10M-Half

Choose one of these fixed speed options if the

connected Ethernet device has trouble

auto-negotiating for line speed.

Auto

FDX Flow Ctrl

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 TN-5500 and connected devices.

Setting Description Factory Default

Enable This enables flow control for this port when the

port’s Speed is set to Auto.
Disable This disables flow control for this port when the

port’s Speed is not set to Auto.

Disable

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MDI/MDIX

Setting Description Factory Default

Auto This allows the port to auto-detect the port type of

the connected Ethernet device and change the

port type accordingly.
MDI

MDIX

Choose MDI or MDIX if the connected Ethernet

device has trouble auto-negotiating fo r po rt t y pe.

Auto

Network Settings

The Network Parameters configuration 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 explanation of each configuration
item follows.

IPv4

Auto IP Configuration

Setting Description Factory Default

Disable Select this to set the TN-5500’s IP address

manually assigned in the “Switch IP Address”
field.

By DHCP The TN-5500’s IP address will be assigned

automatically by the network’s DHCP server.

By BootP The TN-5500’s IP address will be assigned

automatically by the network’s BootP server.

Disable

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NOTE

1. The TN-5500 Series is equipped with a “Hardware-based IP configuration” feature through

the 3 rotary switches physically mounted on the product's front panel. Please reference the
Hardware Installation Guide for how to configure.

2. “Hardware-based IP configurat ion” is enabled only when the 3 rotary switches are set in

valid values ranging from 001 to 254. The TN-5500’s IP address will be configured as
“192.168.127.XXX”, where “XXX” is the valid value set on the 3 rotary switches.

3. If “Hardware-based IP configuration” is enabled, it overrides the “Auto IP

Configuration” described in this section.

4. Disable “Hardware-based IP configuration” by setting the 3 rotary switches with value

000 (factory default).

5. If the value of the 3 rotary switches is invalid (255 to 999), TN-5500 uses the fixed IP

address 192.168.127.253 by default.

Switch IP Address

Setting Description Factory Default

IP address for the TN-5500 This assigns the TN-5500’s IP address on a

TCP/IP network.

192.168.127.253

Switch Subnet Mask

Setting Description Factory Default

Subnet mask for the
TN-5500

This identifies the type of network to which the
TN-5500 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
TN-5500’s URL (e.g., www.tn.company .co m)
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
TN-5500 will use the secondary DNS server if
the first DNS server fails to connect.

None

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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.

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 he xadeci mal
values. One double colon may be used in the
address to indicate the appropriate number of
zeros required to fill the undefined fields.

None

Global Unicast Address

Setting Description Factory Default

None Displays the IPv6 Global Unicast address.

The network portion of 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 Global Unicast address is
automatically generated using the modified
EUI-64 form of the interface identifier
(Switch’s MAC address).

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Link-Local Address

Setting Description Factory Default

None The network portion of Link-Local address is

FE80 and the host portion of Link-Local
address is automatically generated using the
modified EUI-64 form of the interface
identifier (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 that

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

None

Neighbor Cache

An IPv6 node uses a Neighbor Cache table to keep track of active and reachable neighbors. The
table contains entries about individual neighbors to which traffic has been sent recently.

Setting Description

IPv6 Address The neighbor’s on-link unicast IP address.
Link Layer (MAC)

Address

The neighbor’s link layer (MAC) address.

State

The neighbor’s reachability state defined in RFC2461. There are five
possible values: Incomplete, Reachable, Stale, Delay, Probe.

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System Time Settings

The TN-5500 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 TN-5500 does not have a real time clock. The user must update the Current Time and
Current Date to set the initial time for TN-5500 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 This allows configuration of the local time in

local 24-hour format.

None

Current Date

Setting Description Factory Default

User-specified date This allows configuration of the local date in

yyyy-mm-dd format.

None

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Daylight Saving Time

The Daylight Saving Time settings are used to automatically offset the TN-5500’s time forward
according to national standards.

Start Date

Setting Description Factory Default

User-specified date This specifies the date that Daylight Savings

Time begins.

None

End Date

Setting Description Factory Default

User-specified date This specifies the date that Daylight Savings

Time ends.

None

Offset

Setting Description Factory Default

User-specified hour This specifies the number of hours that the time

should be offset forward during Dayl i ght
Savings Time.

None

System Up Time

This indicates how long the TN-5500 remained up since the last cold start. The up time is
indicated in seconds.

Time Zone

Setting Description Factory Default

Time zone This 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 sure to set the time
zone before setting the time.

Time Server IP/Name

Setting Description Factory Default

IP address or name of time
server

This is the IP or domain address (e.g.,

192.168.1.1, time.stdtime.gov.tw, or
time.nist.gov).

IP address or name of
secondary time server

The TN-5500 will try to locate the secondary
NTP server if the first NTP server fails to
connect.

None

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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

Enable NTP/SNTP Server

Setting Description Factory Default

Enable/Disable This enables or disables NTP or SNTP server. Disable

Configuring IEEE 1588/PTP

Time may be accomplished 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 system in power
automation applications.

IEEE 1588, published in November 2002, is a new technology that expands the performance
capabilities of Ethernet networks for measurement and control over a communication network. In
recent years, an increasing number of electrical power systems have been utilizing a more
distributed architecture and less stringent timing specifications. IEEE 1588 establishes a
master-slave relationship between the clocks, and enforces the specific timing requirements. All
devices ultimately derive their time from a clock known as the grandmaster clock. In its basic form,
the protocol is intended to be administration free.

How does an Ethernet switch affect 1588 synchronization?

An Ethernet switch potentially introduces multi-microsecond fluctuations in the latency between
the 1588 grandmaster clock and a 1588 slave clock. Uncorrected these fluctuations will cause
synchronization errors. The magnitude of these fluctuations depend on the design of the Ethernet
switch and the details of the communication traffic. Experiments with prototype implementations
of IEEE 1588 indicate that with suitable care the effect of these fluctuations can be successfully
managed. For example, use of appropriate statistics in the 1588 devices to recognize significant
fluctuations and use suitable averaging techniques in the algorithms controlling the correction of
the local 1588 clock will achieve the highest time accuracy.

Can Ethernet switches be designed to avoid the effects of these fluctuations?

A switch may be designed to support IEEE 1588 while avoiding the effects of queuing. In this case
two modifications to the usual design of an Ethernet switch are necessary:

y The Boundary Clock functionality defined by IEEE 1588 must be implemented in the switch,

and

y The switch must be configured such that it does not pass IEEE 1588 message traffic using the

normal communication mechanisms of the switch.

Such an Ethernet switch will synchronize clocks directly connected to one of its ports to the
highest possible accuracy.

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Basic Ethernet Communication with IEEE 1588 PTP Topology.