Moxa Managed DSL Ethernet Extender
Switch User’s Manual
Edition 1.0, April 2016
www.moxa.com/product
Models covered by this manual:
IEX-408E-2VDSL2 series
© 2016 Moxa Inc. All rights reserved.
Moxa Managed DSL Ethernet Extender
Switch 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
© 2016 Moxa Inc. All rights reserved.
Trademarks
The MOXA logo 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:
+1-714-528-6777
Fax:
+1-714-528-6778
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hanghai office)
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-free: 800-820-5036
Tel:
+86-21-5258-9955
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Tel:
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Fax:
+49-89-3 70 03 99-99
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-Pacific
Tel:
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Tel:
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Fax:
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Table of Contents
1. About this Manual ............................................................................................................................. 1-1
2. Getting Started.................................................................................................................................. 2-1
USB Console Configuration (115200, None, 8, 1, VT100) ......................................................................... 2-2
Configuration by Command Line Interface (CLI) ..................................................................................... 2-5
Configuration by Web Browser ............................................................................................................. 2-6
Disabling Telnet and Browser Access ..................................................................................................... 2-8
3. Featured Functions ........................................................................................................................... 3-1
Home ................................................................................................................................................ 3-2
System Settings ................................................................................................................................. 3-2
System Information ..................................................................................................................... 3-2
User Account .............................................................................................................................. 3-3
Network ..................................................................................................................................... 3-5
Date and Time ............................................................................................................................ 3-7
Warning Notification .................................................................................................................... 3-8
MAC Address Table .................................................................................................................... 3-13
System Files ............................................................................................................................. 3-14
Turbo Ring DIP Switch ............................................................................................................... 3-18
Restart ..................................................................................................................................... 3-19
Factory Default ......................................................................................................................... 3-19
VLAN ............................................................................................................................................... 3-19
The Virtual LAN (VLAN) Concept .................................................................................................. 3-19
Sample Applications of VLANs Using Moxa Ethernet extender switches ............................................. 3-22
Configuring a Virtual LAN ........................................................................................................... 3-23
VLAN Table ............................................................................................................................... 3-25
Port ................................................................................................................................................ 3-26
Port Settings ............................................................................................................................. 3-26
Port Status ............................................................................................................................... 3-27
xDSL Port Settings .................................................................................................................... 3-27
xDSL Port Status ....................................................................................................................... 3-30
Link Aggregation ....................................................................................................................... 3-31
Link-Swap Fast Recovery ........................................................................................................... 3-33
Multicast .......................................................................................................................................... 3-33
The Concept of Multicast ............................................................................................................ 3-33
The Concept of Multicast Filtering and Management ....................................................................... 3-34
IGMP Snooping ......................................................................................................................... 3-36
IGMP Snooping Setting .............................................................................................................. 3-36
IGMP Group Status .................................................................................................................... 3-37
Static Multicast Address ............................................................................................................. 3-38
GMRP ....................................................................................................................................... 3-38
QoS ................................................................................................................................................ 3-39
The Traffic Prioritization Concept ................................................................................................. 3-39
Configuring Traffic Prioritization .................................................................................................. 3-41
CoS Classification ...................................................................................................................... 3-41
CoS Mapping ............................................................................................................................ 3-42
DSCP Mapping .......................................................................................................................... 3-43
Rate Limiting ............................................................................................................................ 3-43
Security ........................................................................................................................................... 3-45
Login Authentication .................................................................................................................. 3-45
Management Interface ............................................................................................................... 3-46
Trusted Access .......................................................................................................................... 3-47
Authentication Certificate ........................................................................................................... 3-48
IEEE 802.1X ............................................................................................................................. 3-48
IEEE 802.1X Setting .................................................................................................................. 3-49
Local Database ......................................................................................................................... 3-50
RADIUS Server Settings ............................................................................................................. 3-51
Port Security ............................................................................................................................. 3-51
Port Access Control Table ........................................................................................................... 3-52
Broadcast Storm Protection ........................................................................................................ 3-52
Loop Protection ......................................................................................................................... 3-52
DHCP .............................................................................................................................................. 3-53
IP-Port Binding.......................................................................................................................... 3-53
DHCP Relay Agent ..................................................................................................................... 3-53
SNMP .............................................................................................................................................. 3-55
SNMP Read/Write Settings .......................................................................................................... 3-56
Trap Settings ............................................................................................................................ 3-57
Industrial Protocol ............................................................................................................................ 3-58
Diagnostics ...................................................................................................................................... 3-59
LLDP ........................................................................................................................................ 3-59
Ping ......................................................................................................................................... 3-60
Port Mirror ................................................................................................................................ 3-60
Monitoring ....................................................................................................................................... 3-60
CPU/Memory Utilization .............................................................................................................. 3-61
Statistics .................................................................................................................................. 3-61
Event Log ................................................................................................................................. 3-63
A. MIB Groups ....................................................................................................................................... A-1
1
1. About this Manual
Thank you for purchasing a Moxa managed DSL Ethernet extender switch. Read this user’s manual to learn how
to connect your Moxa Ethernet extender switch to Ethernet-enabled devices used for industrial applications.
The following two chapters are covered in this user manual:
Chapter 2: Getting Started
This chapter explains the initial installation process for an Moxa Ethernet extender switch. There are three
ways to access an Moxa Ethernet extender switch’s configuration settings: USB console interface, Telnet
command line interface, and web-based interface.
Chapter 3: Featured Functions
This chapter explains how to access an Moxa Ethernet extender switch’s various configuration, monitoring,
and administration functions. These functions can be accessed by serial, Telnet command line, or
web-based interface. As the web-based interface is the most user-friendly way to configure an Moxa
Ethernet extender switch. In this chapter, we use the web console interface to introduce the functions.
2
2. Getting Started
In this chapter we explain how to install an Moxa Ethernet extender switch for the first time. There are three
ways to access the Moxa Ethernet extender switch’s configuration settings: USB console, command line
interface, or web-based interface. If you do not know the Moxa Ethernet extender switch’s IP address, you can
open the USB console by connecting the Moxa Ethernet extender switch to a PC’s USB port with a USB cable.
You can open the Telnet or web-based console over an Ethernet LAN or over the Internet.
The following topics are covered in this chapter:
USB Console Configuration (115200, None, 8, 1, VT100)
Configuration by Command Line Interface (CLI)
Configuration by Web Browser
Disabling Telnet and Browser Access
Moxa Managed DSL Ethernet Extender Switch Getting Started
2-2
USB Console Configuration (115200, None, 8, 1,
VT100)
NOTE
• You cannot connect to the USB console and command line interface at the same time.
• You can connect to the web console and another console (serial or Telnet) at the same time. However, we
strongly recommend that you do NOT do so. Following this advice will allow you to maintain better control
over the Moxa Ethernet extender switch’s configuration.
NOTE
We recommend
using PComm Terminal Emulator when opening the USB console. This software can be
downloaded free of charge from the Moxa website.
Before running PComm Terminal Emulator, first install the USB console driver on your PC and then connect the
Moxa Ethernet extender switch’s USB console port to your PC’s USB port with a USB cable.
After installing PComm Terminal Emulator, open the Moxa Ethernet extender switch’s USB console as follows:
1. From the Windows desktop, click Start > Moxa > PComm Lite Ver1.6 > Terminal Emulator.
2. Select Open under the Port Manager menu to open a new connection.
Moxa Managed DSL Ethernet Extender Switch Getting Started
2-3
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, and then click OK to continue.
5. In the terminal window, the Moxa Ethernet extender switch will prompt you to select a terminal type. Enter
1 to select ansi/vt100 and then press Enter.
Moxa Managed DSL Ethernet Extender Switch Getting Started
2-4
6. The USB 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).
NOTE
By default, the
password assigned to the Moxa Ethernet extender switch is moxa. Be sure to change the
default password after
you first log in to help keep your system secure.
7. The Main Menu of the Moxa Ethernet extender switch’s USB console should appear. (In PComm Terminal
Emulator, you can adjust the font by selecting Font… from the Edit menu.)
8. Use the following keys on your keyboard to navigate the Moxa Ethernet extender switch’s USB 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
Moxa Managed DSL Ethernet Extender Switch Getting Started
2-5
Configuration by Command Line Interface (CLI)
Opening the Moxa Ethernet extender switch’s Telnet or web console over a network requires that the PC host
and Moxa Ethernet extender switch are on the same logical subnet. You may need to adjust your PC host’s IP
address and subnet mask. By default, the Moxa Ethernet extender switch’s IP address is 192.168.127.253 and
the Moxa Ethernet extender switch’s subnet mask is 255.255.255.0 (referred to as a Class B network). Your
PC’s IP address must be set to 192.168.xxx.xxx if the subnet mask is 255.255.0.0, or to 192.168.127.xxx if the
subnet mask is 255.255.255.0.
NOTE
To connect to the
Moxa Ethernet extender switch’s Telnet or web console, your PC host and the
Moxa Ethernet
extender switch
must be on the same logical subnet.
NOTE
When connecting to the
Moxa Ethernet extender switch’s Telnet or web console, first connect one of the
Moxa
Ethernet extender switch
’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
Moxa Ethernet extender switch’s default IP address is 192.168.127.253.
After making sure that the Moxa Ethernet extender switch is connected to the same LAN and logical subnet as
your PC, open the Moxa Ethernet extender switch’s Telnet console as follows:
1. Click Start Run from the Windows Start menu and then Telnet to the Moxa Ethernet extender switch’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.
3. The Telnet console will prompt you to log in. Press Enter and then 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.
Moxa Managed DSL Ethernet Extender Switch Getting Started
2-6
4. The Main Menu of the Moxa Ethernet extender switch’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.
7. Use the following keys on your keyboard to navigate the Moxa Ethernet extender switch’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
USB console.
Configuration by Web Browser
The Moxa Ethernet extender switch’s web console is a convenient platform for modifying the configuration and
accessing the built-in monitoring and network administration functions. You can open the Moxa Ethernet
extender switch’s web console using a standard web browser, such as Internet Explorer.
NOTE
To connect to the
Moxa Ethernet extender switch’s Telnet or web console, your PC host and the
Moxa Ethernet
extender switch
must be on the same logical subnet.
NOTE
If the
Moxa Ethernet extender switch is configure
d for other VLAN settings, you must make sure your PC host
is on the management VLAN.
Moxa Managed DSL Ethernet Extender Switch Getting Started
2-7
NOTE
When connecting to the
Moxa Ethernet extender switch’s Telnet or web console, first connect one of the
Moxa
Ethernet extender switch
’s Ethernet ports to your Ethe
rnet LAN, or directly to your PC’s Ethernet port. You
may use either a straight
-through or cross-over Ethernet cable.
NOTE
The
Moxa Ethernet extender switch’s default IP address is 192.168.127.253.
After making sure that the Moxa Ethernet extender switch is connected to the same LAN and logical subnet as
your PC, open the Moxa Ethernet extender switch’s web console as follows:
1. Connect your web browser to the Moxa Ethernet extender switch’s IP address by entering it in the Address
or URL field.
2. The Moxa Ethernet extender switch’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, the
password assigned to the Moxa Ethernet extender switch is moxa. Be sure to change the
default password after
you first log in to help keep your system secure.
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.
Moxa Managed DSL Ethernet Extender Switch Getting Started
2-8
Disabling Telnet and Browser Access
If you are connecting the Moxa Ethernet extender switch 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 from the USB 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
In this chapter, we explain how to access the Moxa Ethernet extender switch’s various configuration,
monitoring, and administration functions. These functions can be accessed by serial, Telnet, or web console.
The USB console can be used if you do not know the Moxa Ethernet extender switch’s IP address. To access the
USB console, connect switch’s USB port to your PC’s 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 interface for configuring an Moxa Ethernet extender switch. In this
chapter, we use the web console interface to introduce the console functions. There are only a few differences
between the web console, USB console, and Telnet console.
The following topics are covered in this chapter:
Home
System Settings
VLAN
Port
Multicast
QoS
Security
DHCP
SNMP
Industrial Protocol
Diagnostics
Monitoring
Moxa Managed DSL Ethernet Extender Switch Featured Functions
3-2
Home
The Home page shows the summary of the Moxa Ethernet extender switch information including System
Information, Redundancy Protocol, Event Log, and Device virtualization panel. With the organized key
summary, the operators can easily understand the system and port link status at a glance.
System Settings
The System Settings section includes the most common settings required by administrators to maintain and
control an Moxa Ethernet extender switch.
System Information
Define System Information items to make it easier to identify different pieces of network equipment 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.
none
NOTE
The Switch Name field
follows the PROFINET I/O naming rule. The name can only include any of these
character
s, a-z/A-Z/0-9/-/., and the name cannot start with port-xyz or port-xyz-abcde where
xyzabcde=0...9 or is in the form n.n.n.n where n=0...9
Moxa Managed DSL Ethernet Extender Switch Featured Functions
3-3
Switch Location
Setting Description Factory Default
Max. 80 characters
This option is useful for differentiating between the locations of
different switches. 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.
Switch Model name
Contact Information
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
User Account
The Moxa Ethernet extender switch supports the management of accounts, including establishing, activating,
modifying, disabling, and removing accounts. There are two levels of configuration access: admin and user.
Accounts with admin privilege have read/write access of all configuration parameters, whereas accounts with
user privilege only have read access to view configuration items.
NOTE
1.
In order to maintain a higher level of security, we strongly suggest that you change the password after
you
first log in.
2.
By default, the admin user account cannot be deleted or disabled.
Active
Setting Description Factory Default
Checked This account can access the switch’s configuration settings. Checked
Unchecked This account cannot access the switch’s configuration settings.
Authority
Setting
Description
Factory Default
admin This account has read/write access of all configuration
parameters.
admin
user This account can only view configuration parameters.
Moxa Managed DSL Ethernet Extender Switch Featured Functions
3-4
Creating a New Account
When creating a new user account, please type in the user name and password, and assign an authority to the
new account. Click Create to add the account to the Account List table.
Setting Description Factory Default
Authority
Privilege of the user account
admin
User Name
(Max. of 30 characters)
User name set for the user account None
Password Password for the user account.
(between 4 and 16 characters)
None
Confirm Password Confirm the Password setting
(between 4 and 16 characters)
None
Modifying an Existing Account
Select an existing account from the Account List table, modify the account details, and then click Apply to save
the changes.
Deleting an Existing Account
Select an account from the Account List table and then click Delete to delete the account.
Moxa Managed DSL Ethernet Extender Switch Featured Functions
3-5
Network
Network configuration allows users to configure both IPv4 and IPv6 parameters for management access over
the network. The Moxa Ethernet extender switch supports both IPv4 and IPv6, and can be managed through
either of these address types.
IP Settings
The IPv4 settings include the extender 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.
The IPv6 settings include two distinct address types—Link-Local Unicast addresses and Global Unicast
addresses. A Link-Local address makes the extender switch accessible over IPv6 for all devices attached to the
same local subnet. To connect to a larger network with multiple segments, the extender switch must be
configured with a Global Unicast address.
Get IP From
Setting Description Factory Default
DHCP The Moxa Ethernet extender switch’s IP address will be
assigned automatically by the network’s DHCP server.
Manual
BOOTP The Moxa Ethernet extender switch’s IP address will be
assigned automatically by the network’s BootP server.
Manual The Moxa Ethernet extender switch’s IP address must be set
manually.
IP Address
Setting Description Factory Default
IP address for the
Moxa
Ethernet extender
switch
Assigns the Moxa Ethernet extender switch’s IP address on a
TCP/IP network.
192.168.127.253
Subnet Mask
Setting Description Factory Default
Subnet mask for the
Moxa Ethernet
extender switch
Identifies the type of network the Moxa Ethernet extender
switch
is connected to (e.g., 255.255.0.0 for a Class B network,
or 255.255.255.0 for a Class C network).
24(255.255.255.0)
Moxa Managed DSL Ethernet Extender Switch Featured Functions
3-6
Default Gateway
Setting Description Factory Default
IP address for gateway
Specifies the IP address of the router that connects the LAN to
an outside network.
None
DNS Server IP Addresses
Setting Description Factory Default
1st DNS Server Specifies the IP address of the primary DNS server used by
your network. After specifying the DNS server’s IP address, you
can use the Moxa Ethernet extender switch’s URL (e.g.,
www.PT.company.com) to open the web console instead of
entering the IP address.
None
2nd DNS Server Specifies the IP address of the secondary DNS server used by
your network. The Moxa Ethernet extender switch
will use the
secondary DNS server if the first DNS server fails to connect.
None
IPv6 Global Unicast Address Prefix (Prefix Length: 64 bits) Default Gateway
Setting Description Factory Default
Global Unicast Address
Prefix
The prefix value must be formatted according to the 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 fields.
None
IPv6 Global Unicast Address
Setting Description Factory Default
None
Displays the IPv6 Global Unicast address. The network portion
of the Global Unicast address can be configured by specifying
the Global Unicast Prefix and using an EUI-64 interface ID in
the low order 64 bits. The host portion of the Global Unicast
address is automatically generated using the modified EUI-64
form of the interface identifier (Ethernet extender switch
’s MAC
address).
None
IPv6 Link-Local Address
Setting Description Factory Default
None The network portion of the Link-Local address is FE80
and the
host portion of the Link-Local address is automatically
generated using the modified EUI-64 form of the interface
identifier (Ethernet extender switch’s MAC address).
None
IPv6 Neighbor Cache
The IPv6 neighbor cache includes the neighboring node’s IPv6 address, the corresponding Link-Layer address,
and the current state of the entry.
Moxa Managed DSL Ethernet Extender Switch Featured Functions
3-7
Date and Time
The Moxa Ethernet extender switch has a time calibration function based on information from an NTP server or
user specified time and date, allowing functions such as automatic warning emails to include a time and date
stamp.
System Up Time
Indicates how long the Moxa Ethernet extender switch has been up and running since the last cold start.
Current Time
Setting Description Factory Default
User-specified time Indicates time in the yyyy/mm/dd hh:mm:ss format. None
Clock Source
Setting Description Factory Default
Local Configure clock source to be from local time Local
NTP Configure clock source to be from NTP
SNTP Configure clock source to be from SNTP
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. Be sure to set the time zone before setting
the time.
Daylight Saving Time
The Daylight Saving Time settings are used to automatically set the Moxa Ethernet extender switch’s time
ahead according to national standards.
Moxa Managed DSL Ethernet Extender Switch Featured Functions
3-8
Start Date
Setting Description Factory Default
User-specified date Specifies the date that Daylight Saving Time begins. None
End Date
Setting Description Factory Default
User-specified date Specifies the date that Daylight Saving Time ends. None
Offset
Setting Description Factory Default
User-specified hour Specifies the number of hours that the time should be set
forward during Daylight Saving Time.
None
If the NTP or SNTP options are enabled, you will also need to configure the following settings.
Time Server IP / Name
Setting Description Factory Default
IP address or name of
primary 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 Moxa Ethernet extender switch will try to locate the
secondary NTP server if the first NTP server fails to connect.
Enable NTP/SNTP Server
Setting Description Factory Default
Enable/Disable Enables SNTP/NTP server functionality for clients Disabled
Warning Notification
Since industrial Ethernet devices are often located at the endpoints of a system, these devices will not always
know what is happening elsewhere on the network. This means that an industrial Ethernet switch that connects
to these devices must provide system maintainers with real-time alarm messages. Even when control
engineers are out of the control room for an extended period of time, they can still be informed of the status of
devices almost instantaneously when exceptions occur. The Moxa Ethernet extender switch supports different
approaches to warn engineers automatically, such as email, trap, syslog and relay output. It also supports one
set of digital input to integrate sensors into your system to automate alarms by email and relay output.
System Event Settings
System Events are related to the overall function of the extender switch. Each event can be activated
independently with different warning approaches. The Administrator also can decide the severity of each
system event.
Moxa Managed DSL Ethernet Extender Switch Featured Functions
3-9
System Events Description
Cold Start
Power is cut off and then reconnected.
Warm Start The Moxa Ethernet extender switch is rebooted, such as when network
parameters are changed (IP address, subnet mask, etc.).
Configuration Changed Any configuration item has been changed.
Power Transition (OffOn)
The Moxa Ethernet extender switch is powered up.
Power Transition (OnOff)
The Moxa Ethernet extender switch is powered down.
Authentication Fail An incorrect password was entered.
Password Changed User changes the account password.
TACACS+ Authentication Fail Incorrect authentication details were entered.
TACACS+ Authentication Timeout Timed out when attempting to get authenticated from TACACS+ sever.
RADIUS Authentication Fail Incorrect authentication details were entered.
RADIUS Authentication Timeout Timed out when attempting to get authenticated from RADIUS sever.
Topology Changed • If the Master of the Turbo Ring has changed or the backup path is
activated.
• If the Turbo Ring path is disconnected.
• If the MSTP topology has changed.
Coupling Changed Backup path of the Coupling is activated.
Master Changed Master of the Turbo Ring has changed.
RSTP Root Changed If the RSTP root has changed.
RSTP Topology Changed If any Rapid Spanning Tree Protocol switches have changed their position
(applies only to the root of the tree).
Turbo Ring Break Turbo Ring path is disconnected.
DI1 (OnOff)
Digital Input 1 is triggered by an on to off transition.
DI1 (OffOn)
Digital Input 1 is triggered by an off to on transition.
ABC-02 Status Detects if the ABC-02-USB-T is connected or disconnected to the switch
when the ABC-02-USB-T automatically imports/exports/backs-up the
configuration.
Web Login Any account has logged in to the web-based configuration console.
Rate Limit On/Off When the port is disabled due to the ingress throughput exceeds the
configured rate limit.
Port Looping Port looping event is triggered.
LLDP Table Changed Nearly connected devices are changed and shown in the LLDP table.
VDSL Train Fail Attempt to establish DSL connection has failed.
Moxa Managed DSL Ethernet Extender Switch Featured Functions
3-10
Four response actions are available on the Moxa Ethernet extender switch when events are triggered.
Action Description
Trap The Moxa Ethernet extender switch will send a
notification to the trap server when event is
triggered.
E-Mail The Moxa Ethernet extender switch will send a notification to the email server defined in the
Email Setting.
Syslog The Moxa Ethernet extender switch will record a syslog to syslog server defined in Syslog
Server Setting.
Relay When an event is triggered, the Moxa Ethernet extender switch will automate alarms
through the relay output.
Severity
Severity Description
Emergency System is unusable
Alert Action must be taken immediately
Critical Critical conditions
Error Error conditions
Warning Warning conditions
Notice Normal but significant condition
Information Informational messages
Debug Debug-level messages
Port Event Settings
Port Events are related to the activity of a specific port.
Port Events Warning e-mail is sent when…
Link-ON The port is connected to another device.
Link-OFF The port is disconnected (e.g., the cable is pulled out, or the opposing
device shuts down).
Traffic-Overload The port’s traffic surpasses the Traffic-Threshold for that port (provided
this item is Enabled).
RX-Threshold (%) Enter a nonzero number if the port’s Traffic-Overload item is Enabled.
Traffic-Duration (sec.) A Traffic-Overload warning is sent every Traffic-Duration seconds if the
average Traffic-Threshold is surpassed during that time period.
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Four response actions are available on the Moxa Ethernet extender switch when events are triggered.
Action Description
Trap The Moxa Ethernet extender switch will send a
notification to the trap server when event is
triggered.
E-Mail The Moxa Ethernet extender switch will send a notification to the email server defined in the
Email Setting.
Syslog The Moxa Ethernet extender switch will record a syslog to syslog server defined in Syslog
Server Setting.
Relay When an event is triggered, the Moxa Ethernet extender switch will automate alarms
through the relay output.
Severity
Severity Description
Emergency System is unusable
Alert Action must be taken immediately
Critical Critical conditions
Error Error conditions
Warning Warning conditions
Notice Normal but significant condition
Information Informational messages
Debug Debug-level messages
NOTE
The Traffic
-Overload, RX-Threshold (%), and Traffic-Duration (sec.) Port Event items are related. If you
Enable the Traffic
-Overload event, then be sure to enter a nonzero Traffic-
Threshold percentage, as well as a
Traffic
-Duration between 1 and 300 seconds.
Email Settings
Mail Server
Setting Description Factory Default
IP address or url The IP Address or url of the email server. None
TCP Port
Setting
Description
Factory Default
TCP Port number The TCP port number of your email server. 25
User Name
Setting Description Factory Default
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Max. of 45 characters Your email account name None
Password Setting
Setting Description Factory Default
Password The email account password. None
Email Address
Setting Description Factory Default
Max. of 30 characters You can set up to 4 email addresses to receive alarm emails
from the Moxa Ethernet extender switch.
None
Sending a Test Email
After you complete the email settings, you should first click Apply to activate those settings, and then press
the Test button to verify that the settings are correct.
NOTE
Auto warning e-mail messages will be sent through an authentication protected SMTP server that supports
the CRAM
-MD5, LOGIN, and PAIN methods of SASL (Simple Authentication and Security Layer)
authentication mech
anism.
We strongly recommend not entering your Account Name and Account Password if auto warning e
-mail
messages can be delivered without using an authentication mechanism.
Syslog Server Settings
The Syslog function provides the event logs for the syslog server. The function supports 3 configurable syslog
servers and syslog server UDP port numbers. When an event occurs, the event will be sent as a syslog UDP
packet to the specified syslog servers. Each Syslog server can be activated separately by checking the
appropriate checkbox to enable it.
Syslog Server 1/2/3
Setting Description Factory Default
IP Address Enter the IP address of Syslog server 1/2/3, used by your
network.
None
Port Destination
(1 to 65535)
Enter the UDP port of Syslog server 1/2/3. 514
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NOTE
The following events will be recorded into the
Moxa Ethernet extender switch
’s Event Log table, and will then
be
sent to the specified Syslog Server:
•
Cold start
•
Warm start
•
Configuration change activated
•
Power 1 or 2 transition: Off to On or On to Off
•
Authentication fail
•
Password change
•
Redundancy protocol/topology change
•
Master setting mismatch
•
ABC-02 status
•
Web Login
•
Rate Limit on/off(Disable port)
•
Port looping
•
VDSL Train Fail
•
Port traffic overload
•
dot1x Auth Fail
•
Port link off/on
Relay Warning Status
When a relay warning is triggered by either the system or port events, the administrator can turn off the
hardware warning buzzer by clicking the Apply button. The event will still be recorded in the event list.
MAC Address Table
The MAC address table shows the MAC address list passed through the Moxa Ethernet extender switch. The
Ageing time (15 to 3825 seconds) defines the length of time that a MAC address entry can remain in the Moxa
Ethernet extender switch. When an entry reaches its aging time, it “ages out” and is purged from the switch,
effectively cancelling frame forwarding to that specific port.
The MAC Address table can also be configured to display the following Moxa Ethernet extender switch MAC
address groups, which are selected from the drop-down list.
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Drop Down List
ALL Select this item to show all of the Moxa Ethernet extender switch’s MAC addresses.
ALL Learned Select this item to show all of the Moxa Ethernet extender switch’s Learned MAC
addresses.
ALL Static Select this item to show all of the Moxa Ethernet extender switch’s Static, Static Lock,
and Static Multicast MAC addresses.
ALL Multicast Select this item to show all of the Moxa Ethernet extender switch’s Static Multicast
MAC addresses.
Port x Select this item to show all of the MAC addresses on the dedicated port.
The MAC Address Table displays the following information:
MAC This field shows the MAC address.
Type This field shows the type of this MAC address.
Port This field shows the port that this MAC address belongs to.
System Files
Firmware Upgrade
There are three ways to update your Moxa Ethernet extender switch’s firmware: from a local *.rom file, by
remote TFTP server, and with Auto Backup Configurator (ABC-02).
Local
1. Download the updated firmware (*.rom) file from Moxa’s website (www.moxa.com).
2. Browse for the (*.rom) file, and then click the Upgrade button.
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TFTP Server
1. Enter the TFTP Server’s IP address.
2. Input the firmware file name (*.rom) and click the Upgrade button.
Auto Backup Configurator (ABC-02)
1. Download the updated firmware (*.rom) file from Moxa’s website (www.moxa.com).
2. Save the file to the ABC-02’s Moxa folder. The file name cannot be longer than 8 characters, and the file
extension must be .rom.
3. Browse for the firmware (*.rom) file from the ABC-02, and then click the Upgrade button.
Configuration Backup and Restore
There are three ways to back up and restore your Moxa Ethernet extender switch’s configuration: from a local
configuration file, by remote TFTP server, and with Auto Backup Configurator (ABC-02).
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Local
1. Click the Backup button to back up the configuration file (file will be assigned with "Sys.ini" as the file
name and extension) to a local drive.
2. Browse for a configuration on a local disk, and then click the Restore button.
TFTP Server
1. Enter the TFTP Server’s IP address.
2. Input the backup/restore file name (supports up to 54 characters, including the .ini file extension) and then
click the Backup/Restore button.
Auto Backup Configurator (ABC-02)
Manually Backup and Restore
1. Click Backup to save the configuration file to the ABC-02. The file will be saved in the ABC-02’s Moxa folder
as a *.ini file (e.g., Sys.ini).
NOTE
Note that two files will be saved to the ABC
-02-USB’s Moxa folder: Sys.ini and MAC.ini
. The purpose of saving
the two files is to identify which file will be used when Auto load configuration from ABC to system when
boot up
is activated.
MAC.ini
is named using the last 6 digits of the switch’s MAC address, without spaces.
2. Click Browse to select the configuration file, and then click Restore to start loading the configuration into
your switch.
Automatically Backup and Restore
1. Auto load configuration from ABC to system when boot up
Enable this function by checking the Auto load configuration from ABC to system when boot up
checkbox and then click Apply.
NOTE
Note that this function is enabled by default.
Power off your switch first, and then plug in the ABC-02. When you power on your switch, the system will
detect the configuration file on the ABC-02 automatically. The switch will recognize the file name, with the
following sequence priority:
First priority: MAC.ini
Second priority: Sys.ini
If no matching configuration file is found, the fault LED light will turn on, and the switch will boot up
normally.
NOTE
MAC.ini is named using the last 6 digits of the switch’s MAC address, without spaces.
2. Auto backup to ABC-02 when configuration change
Enable this function by checking the Auto backup to ABC-02 when configuration change checkbox and
then click Apply. This function is disabled by default.
Then use Moxa ABC-02 which is capable of backing up switch configuration files automatically. While the
ABC-02 is plugged into the switch, enable the Auto backup to ABC-02 when configuration change
option, and then click Apply. Once this configuration is modified, the switch will back up the current
configuration to the /His_ini folder on the ABC-02. The file name will be the system date/time
(MMDDHHmm.ini).
NOTE
MM=month, DD=day, HH=hour, mm=minutes, from the system time.
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Log File Backup
There are three ways to back up Moxa Ethernet extender switch’s log files: from a the local drive, by remote
TFTP server, and with Auto Backup Configurator (ABC-02).
Local
Click the Backup button to back up the log file (file will be assigned with "Sys.log" as file name and extension)
to a local drive.
TFTP Server
Enter the TFTP Server’s IP address and file name and then click the Backup button.
Auto Backup Configurator (ABC-02)
Manually Backup
Click Backup to save the configuration file to the ABC-02. The file will be saved in the ABC-02’s Moxa folder
with filename and extension as Sys.log.
Automatically Backup
Auto backup of event log to prevent overwrite
This function is designed to maintain a long-term record of the switch’s log files. Moxa Ethernet switches are
capable of saving 1000 event log entries. When the 1000-entry storage limit is reached, the switch will delete
the oldest saved event log. The ABC-02 can be used to back up these event logs. When the number of switch
log entries reaches 1000, the ABC-02 will save the oldest 100 entries from the switch.
Enable the Auto backup of event log to prevent overwrite, and then click Apply. After that, when the
ABC-02 is plugged into the switch, the event logs will always be saved to the ABC-02 automatically when the
number of switch log entries reaches 1000. Each backup action saves the oldest 100 logs to the ABC-02 in one
file, with the filename generated by the current system time as MMDDHHmm.log. The file is saved to the
His_log folder.
NOTE
MM=month, DD=day, HH=hour, mm=minutes, from
the system time.
The log file includes following information:
Index An event index assigned to identify the event sequence.
Bootup
Number
This field shows how many times the Moxa Ethernet extender switch
has been rebooted or
cold started.
Date The date is updated based on how the current date is set on the System Settings page.
Time
The time is updated based on how the current time is set on the System Settings page.
System
Startup Time
The system startup time related to this event.
Event Events that have occurred.
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Switch Reset Button
The Moxa Ethernet extender switch reset button can be used to quickly reset the switch’s configuration, and
save the current configuration and log files to the ABC-02. Press the Reset button on top of the EDS switch to
back up the current system configuration files and event logs to the ABC-02.
NOTE
DO NOT remove the ABC
-02 when performing an upgrade, backup, or restore.
Please refer to Moxa
’s Ethernet Extender Switch Quick Installation Guide for the detailed instructions of the
reset button.
Turbo Ring DIP Switch
The Turbo Ring DIP Switch page allows users to disable the 4th DIP switch located on the Moxa Ethernet
extender switch’s outer casing. The default is enabled with Turbo Ring v2 protocol. Once the user changes the
4th hardware DIP switch configuration to ON, the switch will start to initiate the Turbo Ring redundancy
protocol based on the configuration. The detailed description is given below:
Setting Description Factory Default
Disable the Turbo Ring DIP switch
Unchecked:
The Turbo Ring protocol will be
activated automatically when the
4th DIP switch is moved to the ON
position.
unchecked
Checked:
The Turbo Ring protocol will not be
activated automatically, regardless
of the position of the 4th DIP switch.
Set DIP switch as Turbo Ring
If the DIP switch is enabled, Turbo
Ring protocol will be enabled when
the DIP switch is moved to the ON
position.
Set DIP switch as Turbo Ring v2
Set DIP switch as Turbo Ring v2
If the DIP switch is enabled, Turbo
Ring v2 protocol will be enabled
when the DIP switch is moved to the
ON position.
NOTE
If the 4th DIP switch (Turbo Ring) is configured to ON, you will not be able to disable the Turbo Ring DIP switch
from the web interface, console, or Telnet.
NOTE
If you would like to enable VLAN and/or port trunking on
the DSL D1/D2 ports or port 5 and port 6,
do not use
the fourth DIP switch to activate Turbo Ring
’s settings.
In this case, you should use the Web, Telnet, or Serial
console to activate Turbo Ring
’s settings.
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NOTE
O
nce you have activated the redundant features through the hardware DIP switches, t
he default ring ports are
set to
the DSL D1/D2 ports with the Ring Coupling or the Primary ports set to port 5. T
he Coupling Control or
Backup port
is set to port 6
Restart
The Restart function provides users with a quick way to restart the Moxa Ethernet extender switch’s operating
system.
Factory Default
The Factory Default function provides users with a quick way of restoring the Moxa Ethernet extender
switch’s configuration to factory defaults. The function can be activated from the USB serial interface, via
Telnet, through the web-based console, and with the hardware reset button.
NOTE
After restoring the factory default configuration, you will need to use the default network settings to
re
-establish the web or Telnet console connection with the Moxa Ethernet extender switch.
VLAN
Setting up Virtual LANs (VLANs) on your Moxa Ethernet extender switch increases the efficiency of your
network by dividing the LAN into logical segments, as opposed to physical segments. In general, VLANs are
easier to manage.
The Virtual LAN (VLAN) Concept
What is a VLAN?
A VLAN is a group of devices that can be located anywhere on a network, but which communicate as if they are
on the same physical segment. With VLANs, you can segment your network without being restricted by physical
connections—a limitation of traditional network design. With VLANs you can segment your network into:
• Departmental groups—You could have one VLAN for the marketing department, another for the finance
department, and another for the product development department.
• Hierarchical groups—You could have one VLAN for directors, another for managers, and another for
general staff.
• Usage groups—You could have one VLAN for email users and another for multimedia users.
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Benefits of VLANs
The main benefit of VLANs is that they provide a network segmentation system that is far more flexible than
traditional networks. Using VLANs also provides you with three other benefits:
• VLANs ease the relocation of devices on networks: With traditional networks, network administrators
spend much of their time dealing with moves and changes. If users move to a different subnetwork, the
addresses of each host must be updated manually. With a VLAN setup, if a host originally on the Marketing
VLAN, is moved to a port on another part of the network, and retains its original subnet membership, you
only need to specify that the new port is on the Marketing VLAN. You do not need to do any re-cabling.
• VLANs provide extra security: Devices within each VLAN can only communicate with other devices on
the same VLAN. If a device on the Marketing VLAN needs to communicate with devices on the Finance VLAN,
the traffic must pass through a routing device or Layer 3 switch.
• VLANs help control traffic: With traditional networks, congestion can be caused by broadcast traffic that
is directed to all network devices, regardless of whether or not they need it. VLANs increase the efficiency
of your network because each VLAN can be set up to contain only those devices that need to communicate
with each other.
VLANs and the Rackmount switch
Your Moxa Ethernet extender switch provides support for VLANs using IEEE Std 802.1Q-2005. This standard
allows traffic from multiple VLANs to be carried across one physical link. The IEEE Std 802.1Q-2005 standard
allows each port on your Moxa Ethernet extender switch to be placed as follows:
• On a single VLAN defined in the Moxa Ethernet extender switch
• On several VLANs simultaneously using 802.1Q tagging
The standard requires that you define the 802.1Q VLAN ID for each VLAN on your Moxa Ethernet extender
switch before the extender swtich can use it to forward traffic:
Managing a VLAN
A new or initialized Moxa Ethernet extender switch contains a single VLAN—the Default VLAN. This VLAN has
the following definition:
• VLAN Name—Management VLAN
• 802.1Q VLAN ID—1 (if tagging is required)
All the ports are initially placed on this VLAN, and it is the only VLAN that allows you to access the management
software of the Moxa Ethernet extender switch over the network.
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7
8
Switch A
Switch B
Department 1
VLAN 1
Department 2
VLAN 2
Department 3
VLAN 3
Backbone connects multiple switches
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Communication Between VLANs
If devices connected to a VLAN need to communicate with devices on a different VLAN, a router or Layer 3
switching device with connections to both VLANs needs to be installed. Communication between VLANs can
only take place if they are all connected to a routing or Layer 3 switching device.
VLANs: Tagged and Untagged Membership
The Moxa Ethernet extender switch supports 802.1Q VLAN tagging, a system that allows traffic for multiple
VLANs to be carried on a single physical link (backbone, trunk). When setting up VLANs you need to understand
when to use untagged or tagged membership of VLANs. Simply put, if a port is on a single VLAN it can be an
untagged member, but if the port needs to be a member of multiple VLANs, a tagged membership must be
defined.
A typical host (e.g., clients) will be an untagged member of one VLAN, defined as an Access Port in an Moxa
Ethernet extender switch, while an inter-switch connection will be a tagged member of all VLANs, defined as a
Trunk Port in an Moxa Ethernet extender switch.
The IEEE Std 802.1Q-2005 defines how VLANs operate within an open packet-switched network. An 802.1Q
compliant packet carries additional information that allows a switch to determine which VLAN the port belongs
to. If a frame is carrying the additional information, it is known as a tagged frame.
To carry multiple VLANs across a single physical link (backbone, trunk), each packet must be tagged with a
VLAN identifier so that the switches can identify which packets belong in which VLAN. To communicate between
VLANs, a router must be used.
The Moxa Ethernet extender switch supports three types of VLAN port settings:
• Access Port: The port connects to a single device that is not tagged. The user must define the default port
PVID that assigns which VLAN the device belongs to. Once the ingress packet of this Access Port egresses
to another Trunk Port (the port needs all packets to carry tag information), the Moxa Ethernet extender
switch will insert this PVID into this packet so the next 802.1Q VLAN switch can recognize it.
• Trunk Port: The port connects to a LAN that consists of untagged devices, tagged devices, and/or switches
and hubs. In general, the traffic of the Trunk Port must have a Tag. Users can also assign a PVID to a Trunk
Port. The untagged packet on the Trunk Port will be assigned the default port PVID as its VID.
• Hybrid Port: The port is similar to a Trunk port, except users can explicitly assign tags to be removed from
egress packets.
The following section illustrates how to use these ports to set up different applications.
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Sample Applications of VLANs Using Moxa Ethernet extender
switches
In this application:
• Port 1 connects a single untagged device and assigns it to VLAN 5; it should be configured as an Access
Port with PVID 5.
• Port 2 connects a LAN with two untagged devices belonging to VLAN 2. One tagged device with VID 3 and
one tagged device with VID 4. It should be configured as a Hybrid Port with PVID 2 for untagged device
and Fixed VLAN (Tagged) with 3 and 4 for tagged device. Since each port can only have one unique PVID,
all untagged devices on the same port must belong to the same VLAN.
• Port 3 connects with another switch. It should be configured as a Trunk Port. GVRP protocol will be used
through the Trunk Port.
• Port 4 connects a single untagged device and assigns it to VLAN 2; it should be configured as an Access
Port with PVID 2.
• Port 5 connects a single untagged device and assigns it to VLAN 3; it should be configured as an Access
Port with PVID 3.
• Port 6 connect a single untagged device and assigns it to VLAN 5; it should be configured as an Access Port
with PVID 5.
• Port 7 connects a single untagged device and assigns it to VLAN 4; it should be configured as an Access
Port with PVID 4.
After the application is properly configured:
• Packets from Device A will travel through Trunk Port 3 with tagged VID 5. Switch B will recognize its VLAN,
pass it to port 6, and then remove tags received successfully by Device G, and vice versa.
• Packets from Devices B and C will travel through Hybrid Port 2 with tagged VID 2. Switch B recognizes its
VLAN, passes it to port 4, and then removes tags received successfully by Device F, and vice versa.
• Packets from Device D will travel through Trunk Port 3 with tagged VID 3. Switch B will recognize its VLAN,
pass to port 5, and then remove tags received successfully by Device H. Packets from Device H will travel
through Trunk Port 3 with PVID 3. Switch A will recognize its VLAN and pass it to port 2, but will not
remove tags received successfully by Device D.
• Packets from Device E will travel through Trunk Port 3 with tagged VID 4. Switch B will recognize its VLAN,
pass it to port 7, and then remove tags received successfully by Device I. Packets from Device I will travel
through Trunk Port 3 with tagged VID 4. Switch A will recognize its VLAN and pass it to port 2, but will not
remove tags received successfully by Device E.
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Configuring a Virtual LAN
To configure 802.1Q VLAN and port-based VLANs on the Moxa Ethernet extender switch, use the VLAN
Settings page to configure the ports for either an 802.1Q VLAN or Port-based VLAN mode.
VLAN Mode
Setting Description Factory Default
802.1Q VLAN Sets VLAN mode to 802.1Q VLAN 802.1Q VLAN
Port-based VLAN Sets VLAN mode to Port-based VLAN
VLAN Settings: 802.1Q VLAN
When VLAN Mode is set to 802.1Q VLAN, the configuration options will be divided into the Quick Setting Panel
and VLAN ID Configuration Table. The Quick Setting Panel is generally used to configure VLAN settings for
groups of ports, with the settings pushed down to the VLAN ID Configuration Panel when the user clicks the Add
button. The VLAN ID Configuration Table can be used to configure the settings for individual ports.
Quick Setting Panel
The Moxa Ethernet extender switch provides a Quick Setting Panel that administrators can use to quickly
configure VLAN settings for single ports or groups of ports. To configure a group of ports, type the port names
in the Port column, separated commas (,) for individual port names, or colons (:) to indicate a range of ports.
For example, typing “G1,G3” applies the settings to ports G1 and G3, whereas typing “G1:G3” applies the
settings to ports G1, G2, and G3. Next, if necessary configure Type, PVID, Tagged VLAN, Untagged VLAN,
and Forbidden VLAN, and then click the Add button to move the settings down to the table at the bottom of
the window.
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VLAN ID Configuration Table
Enable GVRP
Setting Description Factory Default
Checked/Unchecked Check the checkbox to enable the GVRP function.
Remove the
checkmark to disable the GVRP function.
Checked
Management VLAN ID
Setting Description Factory Default
1 to 4094 Assigns the VLAN ID to this Moxa Ethernet extender switch. 1
Note: Some of the following settings can be modified in the Quick Setting Panel.
Port
Setting Description Factory Default
Port name Read only N/A
Type
Setting Description Factory Default
Access When this port is connected to a single device, without tags. Access
Trunk When this port is connected to another 802.1Q VLAN aware
switch.
Hybrid When this port is connected to another Access 802.1Q VLAN
aware switch or another LAN that combines tagged and/or
untagged devices and/or other switches/hubs.
ATTENTION
For communication redundancy in the VLAN environment, set
Redundant Port, Coupling Ports and
Coupling Control Po
rts to Trunk Port, since these ports act as the backbone for transmitting packets
fr
om different VLANs to different Moxa Ethernet extender switch units.
PVID
Setting Description Factory Default
1 to 4094 Sets the default VLAN ID for untagged devices connected
to the
port.
1
Tagged VLAN
Setting Description Factory Default
1 to 4094
This field will be active only when selecting the Trunk or Hybrid
port type. Set the other VLAN ID for tagged devices that
connect to the port. Use commas to separate different VIDs.
None
Untagged VLAN
Setting Description Factory Default
VID range from 1 to
4094
This field is only active when the Hybrid port type is selected.
Set the other VLAN ID for tagged devices that connect to the
port and tags that need to be
removed in egress packets. Use
commas to separate different VIDs.
None
Forbidden VLAN
Setting Description Factory Default
1 to 4094 This field is only active when Trunk or Hybrid port type is
selected. Set the other VLAN IDs that will not be supported by
this port. Use commas to separate different VIDs.
None
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NOTE
The
Quick Setting Panel provides a quick way of configuring multiple VLAN ports with the same setting.
VLAN Settings: Port-based VLAN
When VLAN Mode is set to Port-based VLAN, the VLAN Settings window will appear as shown below. Check
the appropriate checkbox under a port to assign the port to a VLAN. The maximum VLAN ID equals the number
of Moxa Ethernet extender switch ports. In the following example, all of the ports are assigned to VLAN 1.
NOTE
When Port
-based VLAN is configured, IGMP will be disabled.
VLAN Table
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Use the 802.1Q VLAN table to review the VLAN groups that were created, Joined Access Ports, Trunk
Ports, and Hybrid Ports, and use the Port-based VLAN table to review the VLAN groups and Joined
Ports.
Port
There are two port setting pages Port Settings and xDSL Port Settings included in Moxa’s Ethernet extender
switch's console utility. The web browser interface is for users to control Ethernet ports and xDSL ports
respectively. The two port status pages Port Status and xDSL Port Status display the status/settings of each
port on the Moxa Ethernet extender switch.
Port Settings
Port settings are included to give the user control over Ethernet port access, Ethernet port transmission speed,
flow control, and Ethernet port type (MDI or MDIX).
Enable
Setting Description Factory Default
Checked Allows data transmission through the port. Checked
Unchecked Immediately shuts off port access.
Media Type
Setting Description Factory Default
Media type Displays the media type for each Ethernet port N/A
Description
Setting Description Factory Default
Max. 63 characters Specifies an alias for the port to help administrators
differentiate between different ports. Example: PLC 1
None
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Speed
Setting Description Factory Default
Auto 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.
Auto
100M-Full Choose one of these fixed speed options if the connected
Ethernet device has trouble auto-negotiating for line speed.
100M-Half
10M-Full
10M-Half
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 Moxa Ethernet extender switch and connected devices.
Setting Description Factory Default
Enable
Enables flow control for this port when the port’s Speed is set to
Auto.
Disabled
Disable
Disables flow control for this port when the port’s Speed is set
to Auto.
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 Ethernet device has
trouble auto-negotiating for port type.
MDIX
Port Status
The following table shows the status of each Ethernet/DSL port, including the media type, link status, flow
control, and port state.
NOTE
MDI/MDIX is not applied to xDSL (D1/D2) ports
xDSL Port Settings
xDSL port settings are included to give the user control over DSL ports’ access, port role, port transmission rate,
INP, and initiating the re-training.
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Port Settings
Port
Setting Description Factory Default
Checked Allows data transmission through the port. Checked
Unchecked Immediately shuts off port access
Enable
Setting Description Factory Default
Checked Allows data transmission through the port. Checked
Unchecked Immediately shuts off port access
Media Type
Setting Description Factory Default
Media type
Displays the media type (standard) for each DSL port
N/A
Description
Setting Description Factory Default
Max. 63 characters Specifies an alias for the DSL port to help administrators
differentiate between different DSL ports. Example:
Intersection #123-1
None
CO/CPE Mode (Set)
Setting Description Factory Default
Auto DSL port with this setting will perform CO/CPE automatic
negotiation with its link partner DSL port to decide the role of
CO or CPE.
Auto
CO DSL port with this setting will perform CO role.
CPE DSL port with this setting will perform CPE role.
CO/CPE Mode (Act)
Setting Description Factory Default
CO Shows the current activated role on the DSL port is CO. By factory default,
DSL D1 is activated
at CO role and the
DSL D2 is activated
at CPE role with
CO/CPE automatic
negotiation enabled.
CPE Shows the current activated role on the DSL port is CPE.
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NOTE
CO/CPE automatic negotiation
The VDSL2 connection between 2 units
must operate in pairs. One port functions as the CO with the other
port
on the other device
as the CPE.
To make configuration easier, the IEX
-408E-2
VDSL2 supports auto CO/CPE negotiation as the default setting
on both DSL ports (DSL D1 and DSL D2). When 2 DSL ports from Moxa’s IEX
-408E-2VDSL2 or IEX-402-
VDSL2
are connected, auto CO/CPE negotiation will automatically assign one port on one device as th
e CO and the
other port on the other side as the CPE.
Also, by factory default, the 2 DSL ports on one IEX
-408E-
2VDSL2 are set for one to be CO (DSL D1) and the
other to be CPE (DSL D2) with auto CO/CPE negotiation enabled.
NOTE
To speed up establishing
a DSL connection, we suggest you connect the DSL D1 port on one IEX-408E-
2VDSL2
to the DSL D2 port on the other IEX
-408E-2VDSL2 when installing.
NOTE
The CO/CPE roles on DSL ports can be set/changed through web browser or Telnet/serial console interfac
es.
Rate Control
Setting Description Factory Default
Symmetric Set the Downstream rate similar to Upstream rate. Symmetric
Asymmetric Set the Downstream rate higher than Upstream rate.
NOTE
In Moxa
’s Ethernet extender switch, data flows from CO side to CPE side and is designated as the D
ownstream
(DS)
while Upstream (US) is defined as data flow from CPE to CO.
Auto/Force Speed (DS/US)
Setting Description Factory Default
Transmission rate Auto: Allows the DSL ports to negotiate the best transmission
rate based on line conditions.
Fixed Speed: Manually assigning one of the below fixed rate
options.
• Asymmetric speed (DS/US):
100M/100M, 100M/70M, 80M/50M, 60M/30M, 55/15M,
50M/8M, 40M/5M, 30M/2
.5M, 20M/1.5M, 10M/1M, 8M/1M,
5M/768K, 3M/512K, 1M/256K
• Symmetric speed (DS/US):
100M/100M, 75M/75M, 60M/60M, 40M/40M, 30M/30M,
25M/25M, 20M/20M, 15M/15M, 10M/10M, 5M/5M, 4M/4M,
3M/3M, 2M/2M, 1M/1M
Auto
NOTE
Once a DSL port has been assigned manually or selected after automatic CO/CPE negotiation to act as CPE role,
the settings of the Rate Control,
Auto/Force Speed (DS/US), INP on this DSL port are no longer valid. The
corresponding
settings of this DSL port will follow its link partner DSL port that is acting as CO.
INP
According to the ITU-993.2 standard, INP (impulse noise protection) is an error correction algorithm. If noise
lasts for consecutive DMT symbols or fractions, the errors can be completely corrected by the error correcting
code.
The Moxa Ethernet VDSL2 extender switch supports two modes: STD (standard) and INP (impulse noise
protection). By default, the standard mode is enabled. One can activate/deactivate the INP mode through web
browser or Telnet/serial console interfaces.
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Setting Description Factory Default
Enabled Enable INP mode on the specific DSL port. Disabled
(When disabled, the
port acts in standard
mode)
Disabled
NOTE
When INP mode is enabled, the
latency when the packet is transmitted
through the DSL port will be longer than
in standard mode. The latency of the DSL port can be observed from
the xDSL Port Status page through
web
browser or Telnet/serial console interfaces.
Retrain
Setting Description Factory Default
Checked To initiate the re-training (including role negotiation,
transmission rate negotiate etc.) on the DSL port.
Unchecked
Unchecked
NOTE
After checkmark
Retrain on certain DSL port, please click Apply to activate the re-training.
NOTE
Due to the characteristics of DSL technology, it takes
a few minutes to complete the training process for
establishing
the DSL link. Therefore, when the re-training is triggered, you need to wait for a few minutes
for
the establishment of the connection
.
Smart Speed Detection Settings
The Moxa Ethernet extender switch supports an automatic condition detection mechanism to decide whether to
initiate re-training on the certain DSL link that is in a better condition to reach a higher transmission rate.
Setting
Description
Factory Default
Checked Activate the automatic detection; re-training (including role
negotiation, transmission rate negotiation etc.
) will be initiated
automatically on the certain DSL link once a better environment
condition is detected.
*Better condition is a comparison between the condition when
DSL link established and the current condition.
Unchecked
Unchecked
NOTE
Smart Speed Detection
can only be activated when the DSL port is set under Auto Speed mode; If the
environment condition varies frequently (e.g. at train wayside), we recommend to use
Force Speed
to prevent
freq
uent re-train.
xDSL Port Status
The following summary table shows the status of each DSL port, including DSL link status, established
connection duration, signal-to-noise (SNR) ratio, acting role, acting rate control mode, DS/US transmission
rate setting and the current bandwidth usage, INP state, delay (latency) on DS/US, and the smart speed status.
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Link Aggregation
Link aggregation involves grouping links into a link aggregation group. A MAC client can treat link aggregation
groups as if they were a single link.
The Moxa Ethernet extender switch’s port trunking feature allows devices to communicate by aggregating up
to 4 trunk groups, with a maximum of 6 Ethernet or 2 xDSL ports for each group. If one of the ports fails within
a specific trunk group, the rest of the ports will automatically provide backup and share the traffic.
Ethernet port trunking on a Moxa Ethernet extender switch can be used to combine up to 6 ports between two
Moxa Ethernet extender switches. If all Ethernet ports on both switches are configured as 100BaseTX and they
are operating in full duplex, the potential bandwidth of the connection will be 1200 Mbps.
xDSL port trunking on a Moxa Ethernet extender switch can be used to combine up to 2 xDSL ports between
two Moxa Ethernet extender switches. If all xDSL ports on both extender switches are configured as symmetric
mode and with speed forced at 5Mbps/5Mbps, the potential bandwidth of the connection will be 20 Mbps.
NOTE
The
xDSL port can only be established in a trunk group with a xDSL port. And
the xDSL ports set in same trunk
group should have
the
exact same xDSL port settings (i.e. same CO/CPE mode, Rate Control mode and Forced
Speed)
The Port Trunking Concept
Moxa has developed a port trunking protocol that provides the following benefits:
• Greater flexibility in setting up your network connections, since the bandwidth of a link can be doubled,
tripled, or quadrupled.
• Redundancy—if one link is broken, the remaining trunked ports share the traffic within this trunk group.
• Load sharing—MAC client traffic can be distributed across multiple links.
NOTE
To avoid broadcast storms or loops in your network while configuring a trunk, first disable or disconnect all
ports that you want to add to the trunk or remove from the trunk. After you finish configuring the trunk, enable
or re
-connect the ports.
NOTE
Each Moxa Ethernet extender switch can set a maximum of 4 port trunking groups. When you activate port
trunking, certain settings on each port will be reset to factory default values or
disabled:
•
Communication redundancy will be reset.
•
802.1Q VLAN will be reset.
•
Multicast Filtering will be reset.
•
Port Lock will be reset and disabled.
•
Set Device IP will be reset.
•
Mirror will be reset.
After port trunking
has been activated, you can configure these items again for each trunking port.
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Port Trunking
The Port Trunking Settings page is where ports are assigned to a trunk group.
Step 1:
Select the desired
Trunk Group
Step 2:
Select the
Trunk Type (Static or LACP).
Step 3:
Select the
Trunk Group to modify the desired ports if necessary
NOTE
xDSL port can only be established in trunk group with xDSL port. And the xDSL ports to be set in
the
same trunk
group should have exact same xDSL port setting
s (i.e. same CO/CPE mode, Rate Control mode and Forced
Speed)
Trunk Group (maximum of 4 trunk groups)
Setting Description Factory Default
Trk1, Trk2, Trk3, Trk4 Specifies the current trunk group. Trk1
NOTE
The table below
indicates the Max. Trunk Groups numbers supported within other Moxa switches.
The EDS 400A series does not support Port Trunking. The number of Trunk Groups for other
Moxa
models are
listed in the following table:
No. of Trunk Groups Model
2 EDS-505A, EDS-P506A-4PoE, EDS-516A
3 EDS-518A
4 For other models
Trunk Type
Setting Description Factory Default
Static Selects Moxa’s static trunking protocol. Static
LACP Selects LACP (IEEE 802.3ad, Link Aggregation Control
Protocol).
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Trunking Status
The Trunking Status table shows the Trunk Group configuration status.
Link-Swap Fast Recovery
The Link-Swap Fast Recovery function, which is enabled by default, allows the Moxa Ethernet extender switch
to return to normal operation extremely quickly after devices are unplugged and then re-plugged into different
ports. The recovery time is on the order of a few milliseconds (compare this with standard commercial switches
for which the recovery time could be on the order of several minutes). To disable the Link-Swap Fast Recovery
function, or to re-enable the function after it has already been disabled, access either the Console utility’s
Link-Swap recovery page, or the Web Browser interface’s Link-Swap fast recovery page, as shown below.
Link-Swap-Fast-Recovery
Setting Description Factory Default
Enable/Disable Checkmark the checkbox to enable the
Link-Swap-Fast-Recovery function
Enable
Multicast
This section explains multicasts, multicast filtering, and how multicast filtering can be implemented on your
Moxa Ethernet extender switch.
The Concept of Multicast
What is an IP Multicast?
A multicast is a packet sent by one host to multiple hosts. Only those hosts that belong to a specific multicast
group will receive the multicast. If the network is set up correctly, a multicast can only be sent to an end-station
or a subset of end-stations on a LAN or VLAN that belong to the multicast group. Multicast group members can
be distributed across multiple subnets, so that multicast transmissions can occur within a campus LAN or over
a WAN. In addition, networks that support IP multicast send only one copy of the desired information across the
network until the delivery path that reaches group members diverges. To make more efficient use of network
bandwidth, it is only at these points that multicast packets are duplicated and forwarded. A multicast packet
has a multicast group address in the destination address field of the packet’s IP header.
Benefits of Multicast
The benefits of using IP multicast are:
• It uses the most efficient, sensible method to deliver the same information to many receivers with only one
transmission.
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• It reduces the load on the source (for example, a server) since it will not need to produce several copies of
the same data.
• It makes efficient use of network bandwidth and scales well as the number of multicast group members
increases.
• Works with other IP protocols and services, such as Quality of Service (QoS).
Multicast transmission makes more sense and is more efficient than unicast transmission for some applications.
For example, multicasts are often used for video-conferencing, since high volumes of traffic must be sent to
several end-stations at the same time, but where broadcasting the traffic to all end-stations would cause a
substantial reduction in network performance. Furthermore, several industrial automation protocols, such as
Allen-Bradley, EtherNet/IP, Siemens Profibus, and Foundation Fieldbus HSE (High Speed Ethernet), use
multicast. These industrial Ethernet protocols use publisher/subscriber communications models by
multicasting packets that could flood a network with heavy traffic.
The Concept of Multicast Filtering and Management
What is Multicast Filtering?
Multicast filtering ensures that only end-stations that have joined certain groups receive multicast traffic and
improves the performance of networks that carry multicast traffic. With multicast filtering, network devices
only forward multicast traffic to the ports that are connected to registered end-stations. One of the ways to
perform multicast filtering in your LAN network in order to higher the network efficiency is by using IGMP
snooping to prune multicast traffic so that it travels only to the end destinations that require the traffic, thus
reducing the amount of traffic on the Ethernet LAN. The following two figures simply illustrate how a network
behaves without multicast filtering, and with multicast filtering.
Network without multicast filtering
All hosts receive the multicast
traffic, even if they don’t need it.
Network with multicast filtering
Hosts only receive dedicated
traffic from other hosts belonging
to the same group.
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Multicast Filtering and Management Methods on Moxa Ethernet Extender
Switches
There are four ways to achieve multicast filtering with an Moxa Ethernet extender switch:
• IGMP (Internet Group Management Protocol) snooping
• GMRP (GARP Multicast Registration Protocol)
• Adding a static multicast MAC address manually to filter multicast traffic automatically
• Multicast filtering for unknown multicast traffic
IGMP and IGMP Snooping
IGMP is used by IP-supporting network devices to register hosts with multicast groups. It can be used on all
LANs and VLANs that contain a multicast capable IP router, and on other network devices that support such
feature. For Moxa Ethernet extender switches, IGMP version 1, 2 and 3 are supported.
IGMP Snooping is a procedure used on Layer 2 switches (e.g. Moxa Ethernet extender switches) in order to
translate IP multicast group addresses into MAC multicast addresses and allow the switch to forward multicast
packets only to certain appropriate ports so that multicast traffic filtering and management can be achieved. A
Moxa Ethernet extender switch with IGMP Snooping enabled snoops on exchanges between hosts and an IGMP
device, such as a router, to find those ports that want to join a multicast group, and then configures its filters
accordingly.
The following indicates how the network works when using IGMP version 1 or 2 and with IGMP snooping
enabled on switches:
• The IP router (or querier) periodically sends query packets to all end-stations on the LANs or VLANs that are
connected to it. For networks with more than one IP router, the router with the lowest IP address is the
querier. A switch with IP address lower than the IP address of any other IGMP queriers connected to the LAN
or VLAN can become the IGMP querier.
• When an IP host receives a query packet, it sends a report packet back that identifies the multicast group
that the end-station would like to join.
• When the report packet arrives at a port on a switch with IGMP Snooping enabled, the switch knows that the
port should forward traffic for the multicast group, and then proceeds to forward the packet to the router.
• When the router receives the report packet, it registers that the LAN or VLAN requires traffic for the
multicast groups.
• When the router forwards traffic for the multicast group to the LAN or VLAN, the switches only forward the
traffic to ports that received a report packet.
IGMP version 3 supports “source filtering,” which allows the system to define how to treat packets from
specified source addresses. The system can either white-list or black-list specified sources.
IGMP version comparison
IGMP Version Main Features Reference
V1
a. Periodic query
RFC-1112
V2 Compatible with V1 and adds:
a. Group-specific query
b. Leave group messages
c. Resends specific queries to verify leave message was the last one in
the group
d. Querier election
RFC-2236
V3 Compatible with V1, V2, and adds:
a. Source filtering
- accept multicast traffic from specified source
- accept multicast traffic from any source except the specified source
RFC-3376
NOTE
IGMP version 2 is compatible with version 1.
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NOTE
Use the USB/Telnet console or web browser interface to enable or disable IGMP Snooping and IGMP querying.
If IGMP Snooping is
not enabled, then IP multicast traffic is always forwarded, flooding the network.
GMRP (GARP Multicast Registration Protocol)
Moxa Ethernet extender switches support IEEE 802.1D-1998 GMRP (GARP Multicast Registration Protocol),
which is different from IGMP (Internet Group Management Protocol). GMRP is a MAC-based multicast
management protocol, whereas IGMP is IP-based. GMRP provides a mechanism that allows bridges and end
stations to register or de-register Group membership information dynamically. GMRP functions similarly to
GVRP, except that GMRP registers multicast addresses on ports. When a port receives a GMRP-join message,
it will register the multicast address to its database if the multicast address is not registered, and all the
multicast packets with that multicast address are able to be forwarded from this port. When a port receives a
GMRP-leave message, it will de-register the multicast address from its database, and all the multicast packets
with this multicast address will not be able to be forwarded from this port.
Static Multicast Address
Some devices may only support multicast packets, but not support either IGMP Snooping or GMRP. The Moxa
Ethernet extender switch supports adding multicast groups manually to enable multicast filtering.
Multicast Filtering for Unknown Multicast Traffic
Moxa Ethernet extender switch supports enabling filtering unknown multicast packets manually on certain
ports to further manage the network traffic.
IGMP Snooping
IGMP Snooping provides the ability to prune multicast traffic so that it travels only to those end destinations
that require that traffic, thereby reducing the amount of traffic on the Ethernet LAN.
NOTE
IGMP Snooping will be disabled when Port
-Based VLAN is enabled.
IGMP Snooping Setting
Enable IGMP Snooping (Global)
Setting Description Factory Default
Enable/Disable
Checkmark the Enable IGMP Snooping checkbox near the top of
the window to enable the IGMP Snooping function globally.
Disabled
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Query Interval (sec)
Setting Description Factory Default
Numerical value, input
by the user
Sets the query interval of the Querier function globally. Valid
settings are from 20 to 600 seconds.
125 seconds
Enable IGMP Snooping
Setting Description Factory Default
Enable/Disable Enables or disables the IGMP Snooping function on that
particular VLAN.
Enabled if IGMP
Snooping is enabled
globally
Querier
Setting Description Factory Default
Disable Disables the Moxa Ethernet extender switch’s querier function. V1/V2
V1/V2 and V3 checkbox V1/V2: Enables the Moxa Ethernet extender switch to send
IGMP snooping version 1 and 2 queries
V3: Enables the Moxa Ethernet extender switch to send IGMP
snooping version 3 queries
Static Multicast Querier Port
Setting Description Factory Default
Select/Deselect Select the ports that will connect to the multicast routers.
These ports will receive all multicast packets from the source.
This option is only active when IGMP Snooping is enabled.
Disabled
NOTE
If a router or layer 3 switch
is connected to the network, it will act as the Querier, and consequently this
Querier option will be disabled on all Moxa layer 2 switches
and layer 2 Ethernet extender switches.
If all switches on the network are Moxa layer 2 switches
or layer 2 Ethernet extender switches
, then only one
layer 2
device will act as Querier.
IGMP Group Status
The Moxa Ethernet extender switch displays the current active IGMP groups that were detected. View IGMP
group setting per VLAN ID on this page.
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The information shown in the table includes:
• Dynamic Router Port: Indicates that a multicast router connects to or sends packets from these port(s).
• Static Router Port: Displays the static multicast querier port(s).
• Querier Connected Port: Displays the port that is connected to the querier.
• Role: Indicates if the switch is a querier. Displays Querier or Non-Querier.
• Group: Displays the multicast group addresses.
• Port: Displays the port that receives the multicast stream or the port the multicast stream is forwarded to
• Version: Displays the IGMP Snooping version.
• Filter Mode: Indicates that the multicast source address is included or excluded. Displays Include or Exclude
when IGMP v3 is enabled
• Sources: Displays the multicast source address when IGMP v3 is enabled
Static Multicast Address
NOTE
The MAC address (
01:00:5E:XX:XX:XX) will appear on the Static Multicast Address page. Activate IGMP
Snooping to implement automatic classification
.
MAC Address
Setting Description Factory Default
Integer Type the MAC address in the MAC Address field to specify a
static multicast address.
None
Member Port
Setting Description Factory Default
Select/Deselect
Checkmark the appropriate check boxes to select the join ports
for this multicast group.
None
GMRP
GMRP is a MAC-based multicast management protocol, whereas IGMP is IP-based. GMRP provides a
mechanism that allows bridges and end stations to register or un-register Group membership information
dynamically.
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Enable GMRP
Setting Description Factory Default
Select/Deselect
Checkmark the check boxes to enable GMRP for the port listed
in the Port column.
None
GMRP Status
The Moxa Ethernet extender switch displays the current active GMRP groups that were detected.
MAC Address: The Multicast MAC address
Static Port: This multicast address is defined by static multicast
Learned Port: This multicast address is learned by GMRP
QoS
The Moxa Ethernet extender switch’s traffic prioritization capability provides Quality of Service (QoS) to your
network by making data delivery more reliable. You can prioritize traffic on your network to ensure that high
priority data is transmitted with minimum delay. Traffic can be controlled by a set of rules to obtain the required
Quality of Service for your network. The rules define different types of traffic and specify how each type should
be treated as it passes through the switch. The Moxa Ethernet extender switch can inspect both IEEE
802.1p/1Q layer 2 CoS tags, and even layer 3 TOS information to provide consistent classification of the entire
network. The Moxa Ethernet extender switch’s QoS capability improves the performance and determinism of
industrial networks for mission critical applications.
The Traffic Prioritization Concept
Traffic prioritization allows you to prioritize data so that time-sensitive and system-critical data can be
transferred smoothly and with minimal delay over a network. The benefits of using traffic prioritization are:
• Improve network performance by controlling a wide variety of traffic and by managing congestion.
• Assign priorities to different categories of traffic. For example, set higher priorities for time-critical or
business-critical applications.
• Provide predictable throughput for multimedia applications, such as video conferencing or voice over IP,
and minimize traffic delay and jitter.
• Improve network performance as the amount of traffic grows. Doing so will reduce costs since it will not be
necessary to keep adding bandwidth to the network.
Traffic prioritization uses the four traffic queues that are present in your Moxa Ethernet extender switch to
ensure that high priority traffic is forwarded on a different queue from lower priority traffic. Traffic prioritization
provides Quality of Service (QoS) to your network.
Moxa Ethernet extender switch traffic prioritization depends on two industry-standard methods:
• IEEE 802.1D—a layer 2 marking scheme.
• Differentiated Services (DiffServ)—a layer 3 marking scheme.
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IEEE 802.1D Traffic Marking
The IEEE Std 802.1D, 1998 Edition marking scheme, which is an enhancement to IEEE Std 802.1D, enables
Quality of Service on the LAN. Traffic service levels are defined in the IEEE 802.1Q 4-byte tag, which is used to
carry VLAN identification as well as IEEE 802.1p priority information. The 4-byte tag immediately follows the
destination MAC address and Source MAC address.
The IEEE Std 802.1D, 1998 Edition priority marking scheme assigns an IEEE 802.1p priority level between 0
and 7 to each frame. The priority marking scheme determines the level of service that this type of traffic should
receive. Refer to the table below for an example of how different traffic types can be mapped to the eight IEEE
802.1p priority levels.
IEEE 802.1p Priority Level IEEE 802.1D Traffic Type
0 Best Effort (default)
1 Background
2 Standard (spare)
3 Excellent Effort (business critical)
4 Controlled Load (streaming multimedia)
5 Video (interactive media); less than 100 milliseconds of latency and jitter
6 Voice (interactive voice); less than 10 milliseconds of latency and jitter
7 Network Control Reserved traffic
Even though the IEEE 802.1D standard is the most widely used prioritization scheme for LAN environments, it
still has some restrictions:
• It requires an additional 4-byte tag in the frame, which is normally optional for Ethernet networks. Without
this tag, the scheme cannot work.
• The tag is part of the IEEE 802.1Q header, so to implement QoS at layer 2, the entire network must
implement IEEE 802.1Q VLAN tagging.
• It is only supported on a LAN and not across routed WAN links, since the IEEE 802.1Q tags are removed
when the packets pass through a router.
Differentiated Services (DiffServ) Traffic Marking
DiffServ is a Layer 3 marking scheme that uses the DiffServ Code Point (DSCP) field in the IP header to store
the packet priority information. DSCP is an advanced intelligent method of traffic marking that allows you to
choose how your network prioritizes different types of traffic. DSCP uses 64 values that map to user-defined
service levels, allowing you to establish more control over network traffic.
The advantages of DiffServ over IEEE 802.1D are:
• You can configure how you want your switch to treat selected applications and types of traffic by assigning
various grades of network service to them.
• No extra tags are required in the packet.
• DSCP uses the IP header of a packet to preserve priority across the Internet.
• DSCP is backwards compatible with IPV4 TOS, which allows operation with existing devices that use a layer
3 TOS enabled prioritization scheme.
Traffic Prioritization
Moxa Ethernet extender switches classify traffic based on layer 2 of the OSI 7 layer model, and the switch
prioritizes received traffic according to the priority information defined in the received packet. Incoming traffic
is classified based upon the IEEE 802.1D frame and is assigned to the appropriate priority queue based on the
IEEE 802.1p service level value defined in that packet. Service level markings (values) are defined in the IEEE
802.1Q 4-byte tag, and consequently traffic will only contain 802.1p priority markings if the network is
configured with VLANs and VLAN tagging. The traffic flow through the switch is as follows:
• A packet received by the Moxa Ethernet extender switch may or may not have an 802.1p tag associated
with it. If it does not, then it is given a default 802.1p tag (which is usually 0). Alternatively, the packet may
be marked with a new 802.1p value, which will result in all knowledge of the old 802.1p tag being lost.
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• Because the 802.1p priority levels are fixed to the traffic queues, the packet will be placed in the
appropriate priority queue, ready for transmission through the appropriate egress port. When the packet
reaches the head of its queue and is about to be transmitted, the device determines whether or not the
egress port is tagged for that VLAN. If it is, then the new 802.1p tag is used in the extended 802.1D header.
• The Moxa Ethernet extender switch will check a packet received at the ingress port for IEEE 802.1D traffic
classification, and then prioritize it based on the IEEE 802.1p value (service levels) in that tag. It is this
802.1p value that determines which traffic queue the packet is mapped to.
Traffic Queues
The hardware of Moxa Ethernet extender switches has multiple traffic queues that allow packet prioritization to
occur. Higher priority traffic can pass through the Moxa Ethernet extender switch without being delayed by
lower priority traffic. As each packet arrives in the Moxa Ethernet extender switch, it passes through any
ingress processing (which includes classification, marking/re-marking), and is then sorted into the appropriate
queue. The switch then forwards packets from each queue.
Moxa Ethernet extender switches support two different queuing mechanisms:
• Weight Fair: This method services all the traffic queues, giving priority to the higher priority queues.
Under most circumstances, the Weight Fair method gives high priority precedence over low priority, but in
the event that high priority traffic does not reach the link capacity, lower priority traffic is not blocked.
• Strict: This method services high traffic queues first; low priority queues are delayed until no more high
priority data needs to be sent. The Strict method always gives precedence to high priority over low priority.
Configuring Traffic Prioritization
Quality of Service (QoS) provides a traffic prioritization capability to ensure that important data is delivered
consistently and predictably. The Moxa Ethernet extender switch can inspect IEEE 802.1p/1Q layer 2 CoS tags,
and even layer 3 TOS information, to provide a consistent classification of the entire network. The Moxa
Ethernet extender switch’s QoS capability improves your industrial network’s performance and determinism for
mission critical applications.
CoS Classification
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Scheduling Mechanism
Setting Description Factory Default
Weight Fair The Moxa Ethernet extender switch has 4 priority queues. In
the weight fair scheme, an 8, 4, 2, 1 weighting is applied to the
four priorities. This approach prevents the lower priority frames
from being starved of opportunity for transmission with only a
slight delay to the higher priority frames
Weight Fair
Strict In the Strict-priority scheme, all top-priority frames egress a
port until that priority’s frames egress. This approach can cause
the lower priorities to be starved of opportunity for transmitting
frames but ensures that all hi
gh priority frames will egress the
switch as soon as possible.
TOS Inspection
Setting Description Factory Default
Enable/Disable Enables or disables the Moxa Ethernet extender switch for
inspecting Type of Server (TOS) bits in the IPV4 frame to
determine the priority of each frame.
Enable
COS Overwriting
Setting Description Factory Default
Enable/Disable Enables or disables the Moxa Ethernet extender switch for
inspecting 802.1p COS tags in the MAC frame to determine the
priority of each frame.
Enable
Priority
Setting Description Factory Default
0 to 7 The port priority has 8 priority queues: from 0 (lowest) to 7
(highest)
3
NOTE
The priority of an
ingress frame is determined in the following order:
1. ToS Inspection
2. CoS Overwriting
3. Priority
CoS Mapping
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CoS Value and Priority Queues
Setting Description Factory Default
0 to 3 Maps different CoS values to 4 different egress queues. CoS 0, 1: 0
CoS 2, 3: 1
CoS 4, 5: 2
CoS 6, 7: 3
DSCP Mapping
DSCP Value and Priority Queues
Setting Description Factory Default
0 to 7 Maps different TOS values to 7 different egress queues. 0 to 7: 0
8 to 15: 1
16 to 23: 2
24 to 31: 3
32 to 39: 4
40 to 47: 5
48 to 55: 6
56 to 63: 7
Rate Limiting
In general, one host should not be allowed to occupy unlimited bandwidth, particularly when the device
malfunctions. For example, so-called “broadcast storms” could be caused by an incorrectly configured topology,
or a malfunctioning device. Moxa industrial Ethernet extender switches not only prevents broadcast storms,
but can also be configured to a different ingress rate for all packets, giving administrators full control of their
limited bandwidth to prevent undesirable effects caused by unpredictable faults.
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Traffic Rate Limiting Settings
Action setting on the Rate Limiting page can be set to Drop Packet or Disable Port.
Action
Setting Description Factory Default
Drop Packet Set the max. ingress/egress rate limit for ingress/egress
packets
Drop Packet
Disable Port When the ingress packets exceed the ingress rate limit, the
port will be disabled for a certain period. During this period, all
packets from this port will be discarded.
Rate Limiting: Drop Packet
Setting Description Factory Default
Ingress rate (% of
max. throughput)
Select the ingress rate limit (% of max. throughput) for all
packets from the following options:
3%, 5%, 10%, 15%, 25%,
35%, 50%, 65%, 85%, Unlimited
Unlimited
Egress rate (% of max.
throughput)
Select the egress rate limit (% of max. throughput) for all
packets from the following options:
3%, 5%, 10%, 15%, 25%,
35%, 50%, 65%, 85%, Unlimited
Unlimited
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Rate Limiting: Disable Port
Setting Description Factory Default
Duration (1-65535
seconds)
When the ingress packets exceed the ingress rate limit, the
port will be disabled for a certain period.
30 seconds
Ingress (frame per
second)
Select the ingress rate (fps) limit for all packets from the
following options: 4464, 7441, 14881, 22322, 37203, 52084,
74405, Unlimited
Unlimited
Security
Security can be categorized into two levels: the user name/password level, and the port access level. Moxa
Ethernet extender switches provide many kinds of security functions, including Login Authentication,
Management Interface, Trusted Access, Authentication Certificate, IEEE 802.1X, Port Security, Broadcast
Storm Protection, and Loop Protection.
Login Authentication
Moxa Ethernet extender switches provide five different user login options: Local, TACACS+ (Terminal Access
Controller Access-Control System Plus), RADIUS (Remote Authentication Dial In User Service), TACACS+ with
Local, and RADIUS with Local. The TACACS+ and RADIUS mechanisms are centralized authentication systems
for connecting to network services. The fundamental purpose of both TACACS+ and RADIUS is to provide an
efficient and secure mechanism for user account management.
NOTE
TACACS+ with Local and RADIUS with Local a
re mechanisms that enable automatic failover from TACACS+
server or RADIUS server to local login credential
s when the TACACS+ server or RADIUS server are
unreachable
.
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Setting Description Factory Default
Authentication Protocol Authentication mechanism selection (Local; TACACS+;
RADIUS; TACACS+, Local; and RADIUS, Local)
Local
Server IP/Name Sets the
IP address of an external TACACS+/RADIUS server as
the authentication database.
None
TCP/UDP Port Sets the communication port of an external TAC
ACS+/RADIUS
server as the authentication database.
TACACS+: 49
RADIUS: 1812
Shared Key Sets specific characters for server authentication verification. None
Authentication Type Authentication mechanism selection. ASCII, PAP, CHAP,
MSCHAP are for TACACS+, and CHAP is for RADIUS.
ASCII for TACACS+
CHAP for RADIUS
Timeout (sec) The timeout period for waiting for a server response. TACACS+: 30
RADIUS: 5
Management Interface
Enable HTTP
Setting Description Factory Default
Select/Deselect Checkmark the appropriate check boxes to enable HTTP
and set
the corresponding port number.
Port: 80
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Enable SSL
Setting Description Factory Default
Select/Deselect Checkmark the appropriate check boxes to enable SSL
and set
the corresponding port number.
Port: 443
Enable Telnet
Setting Description Factory Default
Select/Deselect Checkmark the appropriate check boxes to enable Telnet and
set the corresponding port number.
Port: 23
Enable SSH
Setting Description Factory Default
Select/Deselect Checkmark the appropriate check boxes to enable SSH
and set
the corresponding port number.
Port: 5
Enable SNMP
Setting Description Factory Default
Select/Deselect Checkmark the appropriate check boxes to enable SNMP. Select
Enable Moxa Service
Setting Description Factory Default
Select/Deselect Checkmark the appropriate check boxes to enable Moxa
Service.
Select
Web Auto Logout (min)
Setting
Description
Factory Default
Integer Sets the web auto logout period 5
Trusted Access
The Moxa Ethernet extender switch uses an IP address-based filtering method to control access.
NOTE
Please add your local IP address first,
otherwise, your PC will not be able to connect the device.
You may add or remove IP addresses to limit access to the Moxa Ethernet extender switch. When the accessible
IP list is enabled, only addresses on the list will be allowed access to the Moxa Ethernet extender switch. Each
IP address and netmask entry can be tailored for different situations:
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• 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.
• 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.
• Grant access to all hosts
Make sure the accessible IP list is not enabled, by removing the checkmark from Enable trusted access
(default setting is disabled.)
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
Authentication Certificate
SSL Certificate Re-generate
Setting Description Factory Default
Select/Deselect Enable the SSL Certificate Re-generate Deselect
SSH Key Re-generate
Setting
Description
Factory Default
Select/Deselect Enable the SSH Key Re-generate Deselect
IEEE 802.1X
The IEEE 802.1X standard defines a protocol for client/server-based access control and authentication. The
protocol restricts unauthorized clients from connecting to a LAN through ports that are open to the Internet,
and which otherwise would be readily accessible. The purpose of the authentication server is to check each
client that requests access to the port. The client is only allowed access to the port if the client’s permission is
authenticated.
Three components are used to create an authentication mechanism based on 802.1X standards:
Client/Supplicant, Authentication Server, and Authenticator.
Client/Supplicant: The end station that requests access to the LAN and switch services and responds to the
requests from the switch.
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Authentication Server: The server that performs the actual authentication of the supplicant.
Authenticator: Edge switch or wireless access point that acts as a proxy between the supplicant and the
authentication server, requesting identity information from the supplicant, verifying the information with the
authentication server, and relaying a response to the supplicant.
The Moxa Ethernet extender switch acts as an authenticator in the 802.1X environment. A supplicant and an
authenticator exchange EAPOL (Extensible Authentication Protocol over LAN) frames with each other. We can
either use an external RADIUS server as the authentication server, or implement the authentication server in
the Moxa Ethernet extender switch by using a Local User Database as the authentication look-up table. When
we use an external RADIUS server as the authentication server, the authenticator and the authentication
server exchange EAP frames.
Authentication can be initiated either by the supplicant or the authenticator. When the supplicant initiates the
authentication process, it sends an EAPOL-Start frame to the authenticator. When the authenticator initiates
the authentication process or when it receives an EAPOL Start frame, it sends an EAP Request/Identity
frame to ask for the username of the supplicant.
IEEE 802.1X Setting
Authentication Option
Setting Description Factory Default
Local
(Max. of 32 users)
Select this option when setting the Local User Database as the
authentication database.
Local
Radius Select this option to set an external RADIUS server as the
authentication database. The authentication mechanism is
EAP-MD5.
Radius, Local
Select this option to make using an external RADIUS server as
the authentication database the first priority. The
authentication mechanism is EAP-MD5. The first priority is to
set the Local User Database as the authentication database.
Re-Auth (Global)
Setting Description Factory Default
Enable/Disable Select enable to require re-authentication of the client after a
preset time period of no activity has elapsed.
Enable
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Re-Auth Period (sec)
Setting Description Factory Default
60 to 65535 Sets the Re-Auth period 3600
Enable 802.1X
Setting Description Factory Default
Select/Deselect Check the checkbox under the 802.1X column to enable IEEE
802.1X for one or more ports. All end stations must enter
usernames and passwords before access to these ports is
allowed.
Deselect
Re-Auth
Setting Description Factory Default
Select/Deselect Select enable to require re-authentication of the client by port Deselect
Local Database
When setting the Local User Database as the authentication database, set the database first.
Local User Database Setup
Setting Description Factory Default
User Name
(Max. of 30 characters)
User Name for the Local User Database None
Password
(Max. of 16 characters)
Password for the Local User Database None
Confirm Password
(Max. of 16 characters)
Confirm Password for the Local User Database None
Description
(Max. of 30 characters)
Description for the Local User Database None
NOTE
The user name for the Local User Database is case-insensitive.
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RADIUS Server Settings
Apply Login Authentication Setting
Setting Description Factory Default
Select/Deselect Enables using the same setting as Auth Server. Deselect
Server Setting
Setting Description Factory Default
Server IP/Name Specifies the IP/name of the server None
Server Port
Specifies the port of the server
1812
Server Shared Key Specifies the shared key of the server None
Port Security
The Moxa Ethernet extender switch supports adding unicast groups manually if required. By adding the static
unicast MAC address into a dedicated port, only that MAC address is allowed to access the LAN network through
that port.
Setting Description Factory Default
Port Associates the static address to a dedicated port. 1
MAC Address Adds the static unicast MAC address into the address table. None
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Port Access Control Table
NOTE
The port status will show authorized or
unauthorized.
Broadcast Storm Protection
Setting Description Factory Default
Enable/Disable
Broadcast Storm
Protection
Enables or disables Broadcast Storm Protection for unknown
broadcast packets globally.
Enable
Loop Protection
Enable Loop Protection
Setting Description Factory Default
Enable Enable the loop protection function Disable
Disable Disable the loop protection function
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DHCP
IP-Port Binding
Designated IP Address
Setting Description Factory Default
IP Address Set the desired IP for the connected device. None
DHCP Relay Agent
The DHCP Relay Agent makes it possible for DHCP broadcast messages to be sent over routers. The DHCP Relay
Agent enables DHCP clients to obtain IP addresses from a DHCP sever on a remote subnet, or those that are not
located on the local subnet.
DHCP Relay Agent (Option 82)
Option 82 is used by the relay agent to insert additional information into the client’s DHCP request. The Relay
Agent Information option is inserted by the DHCP relay agent when forwarding client-originated DHCP packets
to a DHCP server. Servers can recognize the Relay Agent Information option and use the information to
implement IP addresses to Clients.
When Option 82 is enabled on the switch, a subscriber device is identified by the switch port through which it
connects to the network (in addition to its MAC address). Multiple hosts on the subscriber LAN can be connected
to the same port on the access switch and are uniquely identified.
The Option 82 information contains 2 sub-options, Circuit ID and Remote ID, which define the relationship
between the end device IP and the DHCP Option 82 server. The Circuit ID is a 4-byte number generated by the
Ethernet switch—a combination of physical port number and VLAN ID. The format of the Circuit ID is shown
below:
FF–VV–VV–PP
This is where the first byte “FF” is fixed to “01”, the second and the third byte “VV-VV” is formed by the port
VLAN ID in hex, and the last byte “PP” is formed by the port number in hex. For example:
01–00–0F–03 is the “Circuit ID” of port number 3 with port VLAN ID 15.
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The “Remote ID” identifies the relay agent itself and can be one of the following:
1. The IP address of the relay agent.
2. The MAC address of the relay agent.
3. A combination of IP address and MAC address of the relay agent.
4. A user-defined string.
Server IP Address
1st Server
Setting Description Factory Default
IP address for the 1st
DHCP server
Assigns the IP address of the 1st DHCP server that the switch
tries to access.
None
2nd Server
Setting Description Factory Default
IP address for the 2nd
DHCP server
Assigns the IP address of the 2nd DHCP server that the switch
tries to access.
None
3rd Server
Setting Description Factory Default
IP address for the 3rd
DHCP server
Assigns the IP address of the 3rd
DHCP server that the switch
tries to access.
None
4th Server
Setting Description Factory Default
IP address for the 4th
DHCP server
Assigns the IP address of the 4th DHCP server that the switch
tries to access.
None
DHCP Option 82
Enable Option 82
Setting Description Factory Default
Enable or Disable Enable or disable the DHCP Option 82 function. Disable
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Assign Remote-ID by
Setting Description Factory Default
IP Uses the switch’s IP address as the remote ID sub. IP
MAC Uses the switch’s MAC address as the remote ID sub. IP
Client-ID
Uses a combination of the switch’s MAC address and IP address
as the remote ID sub.
IP
Other Uses the user-designated ID sub. IP
Value
Setting Description Factory Default
Max. 12 characters Displays the value
that was set. Complete this field if type is set
to Other.
Switch IP address
Remote-ID
Setting Description Factory Default
read-only
The actual hexadecimal value configured in the DHCP server for
the Remote-ID. This value is automatically generated
according to the Value field. Users cannot modify it.
COA87FFD
DHCP Function Table
Enable
Setting Description Factory Default
Enable or Disable Enable or disable the DHCP Option 82 function for this port. Disable
SNMP
The Moxa Ethernet extender switch supports SNMP V1, V2c, and V3. SNMP V1 and SNMP V2c use a community
string match for authentication, which means that SNMP servers access all objects with read-only or read/write
permissions using the community strings public and private by default. SNMP V3 requires that you select an
authentication level of MD5 or SHA, and is the most secure protocol. You can also enable data encryption to
enhance data security.
Supported SNMP security modes and levels are shown in the following table. Select the security mode and level
that will be used to communicate between the SNMP agent and manager.
Protocol
Version
UI Setting Authentication Encryption Method
SNMP V1,
V2c
V1, V2c Read
Community
Community string No Uses a community string match for
authentication.
V1, V2c
Write/Read
Community
Community string No Uses a community string match for
authentication.
SNMP V3 No-Auth No No Uses an account with admin or user to access
objects
MD5 or SHA Authentication
based on MD5 or
SHA
No Provides authentication based on HMAC-MD5,
or HMAC-SHA algorithms. 8-character
passwords are the minimum requirement for
authentication.
MD5 or SHA Authentication
based on MD5 or
SHA
Data
encryption
key
Provides authentication based on HMAC-MD5
or HMAC-SHA algorithms, and data
encryption
key. 8-character passwords and a data
encryption key are the minimum requirements
for authentication .and encryption.
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NOTE
The username and password of SNMP V3 are the same as the username and password of User Account.
A
ccounts with admin privilege have read/write access to all configuration parameters. Accounts with user
authority
only have read access to configuration parameters.
These parameters are configured on the SNMP page. A more detailed explanation of each parameter is given
below the figure.
SNMP Read/Write Settings
SNMP Versions
Setting Description Factory Default
V1, V2c, V3, or
V1, V2c, or
V3 only
Specifies the SNMP protocol version used to manage the
switch.
V1, V2c
V1, V2c Read Community
Setting Description Factory Default
Max. 30 characters
Specifies the community string to authenticate the SNMP agent
for read-only access. The SNMP agent will access all objects
with read-only permissions using this community string.
Public
V1, V2c Write/Read Community
Setting Description Factory Default
Max. 30 characters
Specifies the community string to authenticate the SNMP agent
for read/write access. The SNMP server will access all objects
with read/write permissions using this community string.
Private
For SNMP V3, two levels of privilege are available for accessing the Moxa Ethernet extender switch. Admin
privilege provides access and authorization to read and write the MIB file. User privilege only allows reading
the MIB file.
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Admin Auth. Type (for SNMP V1, V2c, V3, and V3 only)
Setting Description Factory Default
No-Auth Allows the admin account to access objects without
authentication.
No
MD5-
Auth
Authentication will be based on the HMAC-MD5 algorithms.
8-character passwords are the minimum requirement for
authentication.
No
SHA-
Auth
Authentication will be based on the HMAC-SHA algorithms.
8-character passwords are the minimum requirement for
authentication.
No
Enable Admin Data Encryption Key (for SNMP V1, V2c, V3, and V3 only)
Setting Description Factory Default
Enable
Enables data encryption using the specified data encryption key
(between 8 and 30 characters).
No
Disable Specifies that data will not be encrypted. No
User Auth. Type (for SNMP V1, V2c, V3 and V3 only)
Setting Description Factory Default
No-Auth Allows the admin account and user account to access objects
without authentication.
No
MD5-Auth Authentication will be based on the HMAC-MD5 algorithms.
8-character passwords are the minimum requirement for
authentication.
No
SHA-Auth Authentication will be based on the HMAC-SHA algorithms.
8-character passwords are the minimum requirement for
authentication.
No
Enable User Data Encryption Key (for SNMP V1, V2c, V3 and V3 only)
Setting Description Factory Default
Enable
Enables data encryption using the specified data encryption key
(between 8 and 30 characters).
No
Disable No data encryption No
Trap Settings
SNMP traps allow an SNMP agent to notify the NMS of a significant event. The Moxa Ethernet extender switch
supports two SNMP modes: Trap mode and Inform mode.
SNMP Trap Mode—Trap
In Trap mode, the SNMP agent sends an SNMPv1 trap PDU to the NMS. No acknowledgment is sent back from
the NMS so the agent has no way of knowing if the trap reached the NMS. In a Moxa Ethernet extender switch,
Trap V1, V2c and V3 modes are supported (default is Trap V1).
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SNMP Trap Mode—Inform
SNMPv2 provides an inform mechanism. When an inform message is sent from the SNMP agent to the NMS, the
receiver sends a response to the sender acknowledging receipt of the event. This behavior is similar to that of
the get and set requests. If the SNMP agent does not receive a response from the NMS for a period of time, the
agent will resend the trap to the NMS agent. In a Moxa Ethernet extender switch, Inform V2c and V3 modes are
supported. The maximum timeout time is 300 sec (default is 10 seconds), and the maximum number of retries
is 99 times (default is 3 times). When the SNMP agent receives acknowledgement from the NMS, it will stop
resending the inform messages.
Host IP Address 1
Setting Description Factory Default
IP or name Specifies the IP address or name of the primary trap server
used by your network.
None
1st Trap Community
Setting Description Factory Default
Max. 30 characters Specifies the community string to use for authentication. Public
Host IP Address 2
Setting Description Factory Default
IP or name
Specifies the IP address or name of the secondary trap server
used by your network.
None
2nd Trap Community
Setting Description Factory Default
Max. 30 characters Specifies the community string to use for authentication. Public
Industrial Protocol
The Moxa Ethernet extender switch supports 3 industrial protocols, EtherNet/IP, Modbus TCP, and PROFITNET
I/O. All three protocols can be enabled or disabled by checking the appropriate checkbox. Modbus TCP is
enabled by default, with the other two options disabled.
NOTE
1.
IGMP Snooping and IGMP Query functions will be enabled automatically to be properly integrated in
Rockwell systems for multicast Implicit (I/O) Messaging for efficient EtherNet/IP communication.
2.
EtherNet/IP can’t be enabled while IGMP snooping is disabled due to VLAN setting.
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Diagnostics
The Moxa Ethernet extender switch provides three important tools for administrators to diagnose network
systems: LLDP, Ping, and Port Mirror.
LLDP
Overview
LLDP is an OSI Layer 2 protocol defined by IEEE 802.11AB. LLDP
standardizes the self
-identification advertisement method, and allows
each
networking device, such as a Moxa managed switch, to periodically send its
system and configuration information to its neighbors. Because of this, all
LLDP devices are kept informed of each other’s status and configuration,
and with SNMP, this information can be transferred to Moxa’s MXview for
auto
-topology and network visualization.
From the switch’s web interface, you can enable or disable LLDP, and set
the LLDP transmit interval. In addition, you can view each switch’s
neighbor
-list, which is repor
ted by its network neighbors. Most importantly,
enabling the LLDP function allows Moxa’s MXview to automatically display
the network’s topology and system setup details, such as VLAN and
Trunking, for the entire network.
Configuring LLDP Settings
General Settings
LLDP
Setting Description Factory Default
Enable or Disable Enables or disables the LLDP function. Enable
Message Transmit Interval
Setting Description Factory Default
5 to 32768 sec. Sets the transmit interval of LLDP messages, in seconds. 5 (seconds)
LLDP Table
The LLDP Table displays the following information:
Port The port number that connects to the neighbor device.
Neighbor ID
A unique entity (typically the MAC address) that identifies a neighbor device.
Neighbor Port The port number of the neighbor device.
Neighbor Port Description A textual description of the neighbor device’s interface.
Neighbor System Hostname of the neighbor device.
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Ping
The Ping function uses the ping command to give users a simple but powerful tool for troubleshooting network
problems. The function’s most unique feature is that even though the ping command is entered from the user’s
PC keyboard, the actual ping command originates from the Moxa Ethernet extender switch itself. In this way,
the user can essentially sit on top of the Moxa Ethernet extender switch and send ping commands out through
its ports.
To use the Ping function, type in the desired IP address, and then press Enter from the Console utility, or click
Ping when using the Web Browser interface.
Port Mirror
The Port Mirror function can be used to monitor data being transmitted through a specific port. This is done
by setting up another port (the mirror port) to receive the same data being transmitted from, or both to and
from, the port under observation. Using a mirror port allows the network administrator to sniff the observed
port to keep tabs on network activity.
Port Mirroring Settings
Setting Description
Monitored Port Select which ports will be monitored.
Sniffer Mode Select one of the following three watch direction options:
• RX: Select this option to monitor only those data packets coming into the Moxa
Ethernet extender switch’s port.
• TX: Select this option to monitor only those data packets being sent out through the
Moxa Ethernet extender switch’s port.
• TX/RX: Select this option to monitor data packets both coming into, and being sent
out through, the Moxa Ethernet extender switch’s port.
Mirror Port Select the number of the port that will be used to monitor the activity of the monitored
port.
Monitoring
You can monitor statistics in real time from the Moxa Ethernet extender switch’s web console and USB console.
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CPU/Memory Utilization
The CPU/Memory Utilization page displays the status of system resources. Monitor this information to quickly
and easily understand the working status of the extender switch.
CPU Utilization
Setting Description Factory Default
Read-only
The CPU usage volume in the past 5 seconds, 30 seconds, and
5 minutes
Past 5 secs
Free Memory
Setting Description Factory Default
Read-only The switch’s current free memory None
Power Consumption
Setting Description Factory Default
Read-only The current system power consumption information. The
measurement tolerance is 7% (Unit: watts.)
None
Statistics
Access the Monitor by selecting Monitoring from the left selection bar. Monitor by System allows the user to
view a graph that shows the combined data transmission activity of all of the Moxa Ethernet extender switch’s
ports. Click one of the two display modes - Bandwidth Utilization or Packet Counter—to view transmission
activity of all or specific ports graphically. One can also choose one of four options —Total Packets, TX Packets,
RX Packets, or Error Packets—to view transmission activity of specific types of packets on all or specific ports
in a summary table. Recall that TX Packets are packets sent out from the Moxa Ethernet extender switch, RX
Packets are packets received from connected devices, and Error Packets are packets that did not pass TCP/IP’s
error checking algorithm.
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Event Log
The Event Log Table displays the following information:
Index Event index assigned to identify the event sequence.
Bootup Number This field shows how many times the Moxa Ethernet extender switch has been rebooted
or cold started.
Date The date is updated based on how the current date is set in the Basic Setting page.
Time The time is updated based on how the current time is set in the Basic Setting page.
System Startup Time The system startup time related to this event.
Event Events that have occurred.
NOTE
The following events will be recorded into the
Moxa Ethernet extender switch’s Event Log Table:
•
Cold start
•
Warm start
•
Configuration change activated
•
Power 1/2 transition (Off ( On), Power 1/2 transition (On ( Off))
•
Authentication fail
•
Topology changed
•
Master setting is mismatched
•
Port traffic overload
•
dot1x Auth Fail
•
Port link off/on
A
A. MIB Groups
The Moxa Ethernet extender switch comes with built-in SNMP (Simple Network Management Protocol) agent
software that supports cold/warm start trap, line up/down trap, and RFC 1213 MIB-II.
The standard MIB groups that the Moxa Ethernet extender switch supports are as follows:
MIB II.1—System Group
sysORTable
MIB II.2—Interfaces Group
ifTable
MIB II.4 – IP Group
ipAddrTable
ipNetToMediaTable
IpGroup
IpBasicStatsGroup
IpStatsGroup
MIB II.5—ICMP Group
IcmpGroup
IcmpInputStatus
IcmpOutputStats
MIB II.6—TCP Group
tcpConnTable
TcpGroup
TcpStats
MIB II.7—UDP Group
udpTable
UdpStats
MIB II.10—Transmission Group
dot3
dot3StatsTable
MIB II.11—SNMP Group
SnmpBasicGroup
SnmpInputStats
SnmpOutputStats
MIB II.17—dot1dBridge Group
dot1dBase
dot1dBasePortTable
dot1dStp
dot1dStpPortTable
dot1dTp
dot1dTpFdbTable
dot1dTpPortTable
Moxa Managed DSL Ethernet Extender Switch MIB Groups
A-2
dot1dTpHCPortTable
dot1dTpPortOverflowTable
pBridgeMIB
dot1dExtBase
dot1dPriority
dot1dGarp
qBridgeMIB
dot1qBase
dot1qTp
dot1qFdbTable
dot1qTpPortTable
dot1qTpGroupTable
dot1qForwardUnregisteredTable
dot1qStatic
dot1qStaticUnicastTable
dot1qStaticMulticastTable
dot1qVlan
dot1qVlanCurrentTable
dot1qVlanStaticTable
dot1qPortVlanTable
The Moxa Ethernet extender switch also provides a private MIB file, located in the file Moxa-[switch’s model
name]-MIB.my on the Moxa Ethernet extender switch utility CD-ROM.
Public Traps
• Cold Start
• Link Up
• Link Down
• Authentication Failure
• dot1dBridge New Root
• dot1dBridge Topology Changed
Private Traps
• Configuration Changed
• Power On
• Power Off
• Traffic Overloaded
• Turbo Ring Topology Changed
• Turbo Ring Coupling Port Changed
• Turbo Ring Master Mismatch
• PortLoopDetectedTrap
• RateLimitedOnTrap
• LLDPChgTrap
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