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WAGO 852-1816 User guide

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Manual
WAGO Industrial Switches
852-1816
Lean Managed Switch
16 Ports 1000BASE
Version 1.0.0
-T
2 WAGO Industrial Switches 852-1816 Lean Managed Switch
© 2020 WAGO Kontakttechnik GmbH & Co. KG All rights reserved.
WAGO Kontakttechnik GmbH & Co. KG
Hansastraße 27 D-32423 Minden
Phone: +49 (0) 571/8 87 – 0 Fax: +49 (0) 571/8 87 – 1 69
E-Mail:
info@wago.com
Web: www.wago.com
Technical Support
Phone: +49 (0) 571/8 87 – 4 45 55 Fax: +49 (0) 571/8 87 – 84 45 55
E-Mail:
support@wago.com
Every conceivable measure has been taken to ensure the accuracy and completeness of this documentation. However, as errors can never be fully excluded, we always appreciate any information or suggestions for improving the documentation.
E-Mail:
documentation@wago.com
We wish to point out that the software and hardware terms as well as the trademarks of companies used and/or mentioned in the present manual are generally protected by trademark or patent.
WAGO is a registered trademark of WAGO Verwaltungsgesellschaft mbH.
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WAGO Industrial Switches Table of Contents 3 852-1816 Lean Managed Switch
Table of Contents
1 Notes about this Documentation ............................................................. 7
1.1 Validity of this Documentation................................................................. 7
1.2 Copyright ................................................................................................ 7
1.3 Symbols ................................................................................................. 8
1.4 Number Notation .................................................................................. 10
1.5 Font Conventions ................................................................................. 10
2 Important Notes ....................................................................................... 11
2.1 Legal Bases .......................................................................................... 11
2.1.1 Subject to Changes .......................................................................... 11
2.1.2 Personnel Qualification .................................................................... 11
2.1.3 Proper Use of the Industrial Switches............................................... 11
2.1.4 Technical Condition of Specified Devices ......................................... 12
2.1.5 Standards and Regulations for Operating the Industrial Switches .... 12
2.2 Safety Advice (Precautions).................................................................. 13
2.3 Special Use Conditions for ETHERNET Devices .................................. 16
3 General .................................................................................................... 17
3.1 Scope of Supply ................................................................................... 17
3.2 Industrial ETHERNET Technology........................................................ 17
3.3 Switching Technology ........................................................................... 18
3.4 Autonegotiation .................................................................................... 18
3.5 Autocrossing ......................................................................................... 18
3.6 Store-and-forward switching mode ....................................................... 18
3.7 Transmission Methods.......................................................................... 19
4 Device Description .................................................................................. 20
4.1 View ..................................................................................................... 21
4.1.1 Front View ........................................................................................ 21
4.1.2 Top View .......................................................................................... 23
4.2 Connectors ........................................................................................... 24
4.2.1 Grounding screw .............................................................................. 24
4.2.2 Power Supply (PWR/RPS) ............................................................... 25
4.2.3 Network Connections ....................................................................... 26
4.2.3.1 RJ45 Connection ......................................................................... 26
4.2.3.2 10/100/1000BASE-T-Ports .......................................................... 27
4.3 Display Elements .................................................................................. 28
4.3.1 Device LEDs .................................................................................... 28
4.3.2 Port LEDs ........................................................................................ 29
4.4 Operating elements .............................................................................. 30
4.4.1 DIP Switches .................................................................................... 30
4.4.2 Reset Button .................................................................................... 31
4.5 Label .................................................................................................... 32
4.5.1 Hardware and Software Version....................................................... 32
4.6 Technical Data ..................................................................................... 33
4.6.1 Device Data ..................................................................................... 33
4.6.2 System Data .................................................................................... 33
4.6.3 Power Supply ................................................................................... 33
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4.6.4 Communication ................................................................................ 34
4.6.5 Environmental Conditions ................................................................ 34
4.7 Approvals ............................................................................................. 35
5 Mounting .................................................................................................. 36
5.1 Installation Site ..................................................................................... 36
5.2 Installation on a Carrier Rail.................................................................. 36
5.3 Removal from Carrier Rail .................................................................... 36
6 Connect Devices ..................................................................................... 37
6.1 Power Supply ....................................................................................... 37
6.2 External Alarm Contact Port ................................................................. 38
6.3 10/100/1000BASE-T Ports ................................................................... 39
7 Configuration........................................................................................... 40
7.1 Overview of Configuration Options ....................................................... 40
7.1.1 Web Based Management ................................................................. 40
7.1.2 Telnet or SSH Connection ................................................................ 40
7.1.3 Access via Console Port (CLI).......................................................... 41
8 Diagnostics .............................................................................................. 42
8.1 Web Based Management for Diagnostic Function ................................ 43
8.1.1 CPU Usage ...................................................................................... 43
8.1.2 Memory Usage ................................................................................. 44
8.1.3 Transmitting Port Usage................................................................... 44
8.1.4 Receiving Port Usage ...................................................................... 45
8.1.5 Transmitting Port Broadcast Rate .................................................... 45
8.1.6 Receiving Port Broadcast Rate ........................................................ 46
8.1.7 Port Link Down Statistics.................................................................. 47
8.2 Mouse pointer ....................................................................................... 48
8.3 Collapse, User Login, Topology Map .................................................... 49
9 Configuration in the Web Based Management ...................................... 53
9.1 Information ........................................................................................... 59
9.1.1 Device Status ................................................................................... 59
9.1.2 Legal Information ............................................................................. 61
9.1.3 Port Counter..................................................................................... 62
9.1.4 Utilization Information ....................................................................... 63
9.2 Configuration ........................................................................................ 64
9.2.1 Device Discovery ............................................................................. 64
9.2.1.1 LLDP ........................................................................................... 64
9.2.1.2 Manual Registration..................................................................... 66
9.2.2 Interface ........................................................................................... 68
9.2.2.1 Loop Detection ............................................................................ 68
9.2.2.1.1 Loop Recovery ........................................................................ 68
9.2.2.2 Mirror ........................................................................................... 72
9.2.2.2.1 Port Settings ........................................................................... 72
9.2.2.3 Port Setup ................................................................................... 77
9.2.2.4 Port Priority.................................................................................. 80
9.2.3 SNMP .............................................................................................. 82
9.2.3.1 Event Settings ............................................................................. 83
9.2.3.2 Port Event Settings ...................................................................... 85
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WAGO Industrial Switches Table of Contents 5 852-1816 Lean Managed Switch
9.2.3.3 SNMP Setup................................................................................ 87
9.2.3.4 SNMP Trap.................................................................................. 89
9.2.3.5 SNMPv3 Group ........................................................................... 91
9.2.3.6 SNMPv3 User .............................................................................. 93
9.2.3.7 SNMPv3 View ............................................................................. 95
9.2.4 System Management ....................................................................... 97
9.2.4.1 General Setup ............................................................................. 97
9.2.4.2 SNTP......................................................................................... 100
9.2.4.3 User Account ............................................................................. 104
9.2.5 Storm Control ................................................................................. 107
9.3 Security .............................................................................................. 110
9.3.1 802.1X ........................................................................................... 110
9.3.1.1 IEEE 802.1X Communication Standard ..................................... 110
9.3.1.2 Global Setup.............................................................................. 114
9.3.1.3 Port Setup ................................................................................. 117
9.3.2 ACL ................................................................................................ 120
9.3.3 Port Security .................................................................................. 123
9.3.4 Service Control .............................................................................. 126
9.3.5 VLAN ............................................................................................. 128
9.3.5.1 Port Isolation ............................................................................. 128
9.3.5.2 VLAN Setup............................................................................... 131
9.4 Redundancy ....................................................................................... 134
9.4.1 ERPS ............................................................................................. 134
9.4.2 STP/RSTP ..................................................................................... 140
9.4.2.1 STP/RSTP Setup ...................................................................... 145
9.4.2.2 STP/RSTP Port Setup ............................................................... 146
9.5 Diagnostic........................................................................................... 149
9.5.1 Alarm ............................................................................................. 149
9.5.1.1 Information ................................................................................ 149
9.5.1.2 DIP Status ................................................................................. 150
9.5.1.3 Traffic Flooding .......................................................................... 151
9.5.1.4 Port Utilization ........................................................................... 154
9.5.2 Dashboard Configuration ............................................................... 157
9.5.2.1 Quick Diagnosis Dashboard ...................................................... 157
9.5.2.1.1 Port Registration Learn ......................................................... 157
9.5.2.1.2 Port Link Down Statistics ...................................................... 158
9.5.2.1.3 Critical/Alert Threshold .......................................................... 159
9.5.3 Modbus .......................................................................................... 161
9.5.3.1 Data Format and Function Code................................................ 161
9.5.3.2 MODBUS Register .................................................................... 161
9.5.4 SNMP ............................................................................................ 162
9.5.5 System Log .................................................................................... 163
9.5.5.1 Syslog Server Setting ................................................................ 163
9.6 Maintenance ....................................................................................... 166
9.6.1 Reboot ........................................................................................... 166
9.6.2 Upgrade Firmware ......................................................................... 167
9.6.3 Upload Configuration ..................................................................... 168
9.6.4 Download Configuration ................................................................. 169
9.6.5 Reset Configuration ....................................................................... 170
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10 Appendix................................................................................................ 171
10.1 RJ-45 Cable ....................................................................................... 171
10.2 Configuring in the Command Line Interface (CLI) ............................... 172
10.2.1 System Status ................................................................................ 172
10.2.1.1 System Information.................................................................... 172
10.2.2 Default Settings .............................................................................. 173
10.2.2.1 System ...................................................................................... 173
10.2.2.1.1 Jumbo Frame ........................................................................ 174
10.2.2.1.2 SNTP .................................................................................... 175
10.2.2.1.3 Management Host ................................................................. 176
10.2.2.2 MAC Management..................................................................... 177
10.2.2.3 Port Mirroring............................................................................. 177
10.2.2.4 Port Settings .............................................................................. 178
10.2.3 Advanced Settings ......................................................................... 179
10.2.3.1 Storm Control ............................................................................ 179
10.2.3.1.1 VLAN .................................................................................... 180
10.2.3.1.2 Port Isolation ......................................................................... 180
10.2.3.1.2.1 VLAN Settings .................................................................. 181
10.2.3.2 LLDP ......................................................................................... 182
10.2.3.2.1 Loop Detection ...................................................................... 183
10.2.3.2.2 STP....................................................................................... 184
10.2.3.3 Security ..................................................................................... 186
10.2.3.4 Access Control List .................................................................... 186
10.2.3.4.1 Monitor .................................................................................. 187
10.2.3.4.2 Alarm .................................................................................... 187
10.2.3.4.3 Monitor Information ............................................................... 187
10.2.3.5 SFP Information ........................................................................ 187
10.2.3.6 Management ............................................................................. 188
10.2.3.7 SNMP ........................................................................................ 188
10.2.3.8 Maintenance .............................................................................. 189
10.2.4 System Log .................................................................................... 189
10.2.4.1 User Account ............................................................................. 190
10.3 Modbus/TCP Tables ........................................................................... 191
10.3.1 Data Format and Function Code .................................................... 191
10.4 Modbus Register ................................................................................ 191
List of Figures ................................................................................................ 198
List of Tables .................................................................................................. 201
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WAGO Industrial Switches Notes about this Documentation 7 852-1816 Lean Managed Switch

1 Notes about this Documentation

Always retain this documentation!
This documentation is part of the product. Therefore, retain the documentation during the entire service life of the product. Pass on the documentation to any subsequent user. In addition, ensure that any supplement to this documentation is included, if necessary.

1.1 Validity of this Documentation

This documentation is only applicable to WAGO ETHERNET accessory products “Lean Managed Switch” (852-1816).

1.2 Copyright

This Manual, including all figures and illustrations, is copyright-protected. Any further use of this Manual by third parties that violate pertinent copyright provisions is prohibited. Reproduction, translation, electronic and phototechnical filing/archiving (e.g., photocopying) as well as any amendments require the written consent of WAGO Kontakttechnik GmbH & Co. KG, Minden, Germany. Non-observance will involve the right to assert damage claims.
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8 Notes about this Documentation WAGO Industrial Switches 852-1816 Lean Managed Switch

1.3 Symbols

Personal Injury!
Indicates a high-risk, imminently hazardous situation which, if not avoided, will result in death or serious injury.
Personal Injury Caused by Electric Current!
Indicates a high-risk, imminently hazardous situation which, if not avoided, will result in death or serious injury.
Personal Injury!
Indicates a moderate-risk, potentially hazardous situation which, if not avoided, could result in death or serious injury.
Personal Injury!
Indicates a low-risk, potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
Damage to Property!
Indicates a potentially hazardous situation which, if not avoided, may result in damage to property.
Damage to Property Caused by Electrostatic Discharge (ESD)!
Indicates a potentially hazardous situation which, if not avoided, may result in damage to property.
Important Note!
Indicates a potential malfunction which, if not avoided, however, will not result in damage to property.
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WAGO Industrial Switches Notes about this Documentation 9 852-1816 Lean Managed Switch
Additional Information:
Refers to additional information which is not an integral part of this documentation (e.g., the Internet).
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10 Notes about this Documentation WAGO Industrial Switches
Table 1: Number Notation
Number Code
Example
Note
Decimal
100
Normal notation
Hexadecimal
0x64
C notation
Binary
'100' '0110.0100'
In quotation marks, nibble separated with dots (.)
Table 2: Font Conventions
Font Type
Indicates
italic
Names of paths and data files are marked in italic-type. e.g.: C:\Program Files\WAGO Software
Menu
Menu items are marked in bold letters.
Save
>
A greater-than sign between two names means the selection of a
e.g.: File > New
Input
Designation of input or optional fields are marked in bold letters,
Start of measurement range
“Value”
Input or selective values are marked in inverted commas.
Start of measurement range
[Button]
Pushbuttons in dialog boxes are marked with bold letters in square
e.g.: [Input]
[Key]
Keys are marked with bold letters in square brackets. e.g.: [F5]
852-1816 Lean Managed Switch

1.4 Number Notation

1.5 Font Conventions

e.g.:
menu item from a menu.
e.g.:
e.g.: Enter the value “4 mA” under
brackets.
.
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WAGO Industrial Switches Important Notes 11 852-1816 Lean Managed Switch

2 Important Notes

This section includes an overall summary of the most important safety requirements and notes that are mentioned in each individual section. To protect your health and prevent damage to devices as well, it is imperative to read and carefully follow the safety guidelines.

2.1 Legal Bases

2.1.1 Subject to Changes

WAGO Kontakttechnik GmbH & Co. KG reserves the right to provide for any alterations or modifications. WAGO Kontakttechnik GmbH & Co. KG owns all rights arising from the granting of patents or from the legal protection of utility patents. Third-party products are always mentioned without any reference to patent rights. Thus, the existence of such rights cannot be excluded.

2.1.2 Personnel Qualification

All sequences implemented on Series 852 devices may only be carried out by electrical specialists with sufficient knowledge in automation. The specialists must be familiar with the current norms and guidelines for the devices and automated environments.
All changes to the controller should always be carried out by qualified personnel with sufficient sufficient skills in PLC programming.

2.1.3 Proper Use of the Industrial Switches

The device is designed for the IP30 protection class. It is protected against the insertion of solid items and solid impurities up to 2.5 mm in diameter, but not against water penetration. Unless otherwise specified, the device must not be operated in wet and dusty environments.
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12 Important Notes WAGO Industrial Switches 852-1816 Lean Managed Switch

2.1.4 Technical Condition of Specified Devices

The devices to be supplied ex works are equipped with hardware and software configurations, which meet the individual application requirements. These modules contain no parts that can be serviced or repaired by the user. The following actions will result in the exclusion of liability on the part of WAGO Kontakttechnik GmbH & Co. KG:
• Repairs,
• Changes to the hardware or software that are not described in the operating instructions,
• Improper use of the components.
Further details are given in the contractual agreements. Please send your request for modified and new hardware or software configurations directly to WAGO Kontakttechnik GmbH & Co. KG.

2.1.5 Standards and Regulations for Operating the Industrial Switches

Please observe the standards and regulations that are relevant to installation:
• The data and power lines must be connected and installed in compliance
with the standards to avoid failures on your installation and eliminate any danger to personnel.
• For installation, startup, maintenance and repair, please observe the
accident prevention regulations of your machine (e.g., DGUV Regulation “Electrical Installations and Equipment”).
• Emergency stop functions and equipment must not be deactivated or
otherwise made ineffective. See relevant standards (e.g., EN 418).
• Your installation must be equipped in accordance to the EMC guidelines so
electromagnetic interferences can be eliminated.
• Please observe the safety measures against electrostatic discharge
according to EN 61340-5-1/-3. When handling the modules, ensure that environmental factors (persons, workplace and packing) are well grounded.
• The relevant valid and applicable standards and guidelines regarding the
installation of switch cabinets must be observed.
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WAGO Industrial Switches Important Notes 13 852-1816 Lean Managed Switch

2.2 Safety Advice (Precautions)

For installing and operating purposes of the relevant device to your system the following safety precautions shall be observed:
Do not work on devices while energized!
All power sources to the device shall be switched off prior to performing any installation, repair or maintenance work.
Only install in appropriate housings, cabinets or electrical operation rooms!
WAGO's 852 Series ETHERNET Switches are considered exposed operating components. Therefore, only install these switches in lockable housings, cabinets or electrical operation rooms. Access must be limited to authorized, qualified staff having the appropriate key or tool.
Ensure a standard connection!
To minimize any hazardous situations resulting in personal injury or to avoid failures in your system, the data and power supply lines shall be installed according to standards, with careful attention given to ensuring the correct terminal assignment. Always adhere to the EMC directives applicable to your application.
Do not use in telecommunication circuits!
Only use devices equipped with ETHERNET or RJ-45 connectors in LANs. Never connect these devices with telecommunication networks.
Replace defective or damaged devices!
Replace defective or damaged device/module (e.g., in the event of deformed contacts).
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14 Important Notes WAGO Industrial Switches 852-1816 Lean Managed Switch
Protect the components against materials having seeping and insulating properties!
The components are not resistant to materials having seeping and insulating properties such as: aerosols, silicones and triglycerides (found in some hand creams). If you cannot exclude that such materials will appear in the component environment, then install the components in an enclosure being resistant to the above-mentioned materials. Clean tools and materials are imperative for handling devices/modules.
Clean only with permitted materials!
Clean housing and soiled contacts with propanol.
Do not use any contact spray!
Do not use any contact spray. The spray may impair contact area functionality in connection with contamination.
Do not reverse the polarity of connection lines!
Avoid reverse polarity of data and power supply lines, as this may damage the devices involved.
Avoid electrostatic discharge!
The devices are equipped with electronic components that may be destroyed by electrostatic discharge when touched. Please observe the safety precautions against electrostatic discharge per DIN EN 61340-5-1/-3. When handling the devices, please ensure that environmental factors (personnel, work space and packaging) are properly grounded.
Laser radiation warning!
Do not stare into openings of the connections when no cable is connected, so as not to expose the radiation. It can emit invisible radiation. It concerns here a laser class 1 according EN 60825-1.
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WAGO Industrial Switches Important Notes 15 852-1816 Lean Managed Switch
Radio interference in residential areas
This is a Class A device. This device can cause radio interference in residential areas; in this case, the operator can be required to take appropriate measures to prevent such interference.
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16 Important Notes WAGO Industrial Switches 852-1816 Lean Managed Switch

2.3 Special Use Conditions for ETHERNET Devices

If not otherwise specified, ETHERNET devices are intended for use on local networks. Please note the following when using ETHERNET devices in your system:
• Do not connect control components and control networks directly to an
open network such as the Internet or an office network. WAGO recommends putting control components and control networks behind a firewall.
• Limit physical and electronic access to all automation components to
authorized personnel only.
• Change the default passwords before first use! This will reduce the risk of
unauthorized access to your system.
• Regularly change the passwords used! This will reduce the risk of
unauthorized access to your system.
• If remote access to control components and control networks is required,
use a Virtual Private Network (VPN).
• Regularly perform threat analyses. You can check whether the measures
taken meet your security requirements.
• Use “defense-in-depth” mechanisms in your system's security configuration
to restrict the access to and control of individual products and networks.
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WAGO Industrial Switches General 17 852-1816 Lean Managed Switch

3 General

3.1 Scope of Supply

• 1 Industrial Lean Managed Switch with CAGE CLAMP® connection (Item.
No. 2231-103/026-000)
• Protective covers for unused ports
• Operating and Assembly instructions

3.2 Industrial ETHERNET Technology

WAGO’s rugged Lean Managed Switches are designed for industrial use in compliance with the following standards:
- IEEE 802.3 10BASE-T
- IEEE 802.3u 100BASE-TX/FX
- IEEE 802.3ab 1000BASE-T Ethernet
- IEEE 802.3x Flow Control
- IEEE 802.1d Spanning Tree Protocol (STP)
- IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
- IEEE 802.1Q VLAN Tagging
- IEEE 802.1p Prioritization
- IEEE 802.1x Port Authentication
- IEEE 802.1ab Link Layer Discovery Protocol (LLDP)
- IEEE 802.1AB LLDP-MED
- IEEE 802.3az Energy Efficient Ethernet (EEE)
- ITU-T G8032v1/v2 Ethernet Ring Protection Switching (ERPS)
The switches have a power supply with a supply voltage range of 12 … 60 V.
Features such as autonegotiation and auto MDI/MDIX (crossover) on all 10/100/1000 BASE-T ports are also implemented.
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18 General WAGO Industrial Switches 852-1816 Lean Managed Switch

3.3 Switching Technology

Industrial ETHERNET primarily uses switching technology. This technology allows any network subscriber to send at any time because the subscriber always has an open peer-to-peer connection to the next switch. The connection is bidirectional, i.e., the subscriber can send and receive at the same time (full duplex). The targeted use of switching technology can increase real-time capability because the peer-to-peer connection prevents collisions in network communication.

3.4 Autonegotiation

Autonegotiation allows the switch to detect the transmission rate and operating mode for each port and the connected subscriber or subscribers, and to set them automatically. The highest possible mode (transmission speed and operating mode) is set. Autonegotiation is available to ETHERNET subscribers connected to the switch via copper cable. This make the switch a plug-and-play device.

3.5 Autocrossing

Autocrossing (MDI/MDI-X, “Medium Dependent Interface”) automatically reconfigures the receive and transmit signals for twisted-pair interfaces as needed. This allow users to use wired and crossover cables in the same manner 1:1.

3.6 Store-and-forward switching mode

In “Store and Forward” mode, the ETHERNET switch caches the entire data telegram, checks it for errors (CRC checksum) and if there are no errors, puts it in a queue. Subsequently, the data telegram (MAC table) is selectively forwarded to the port that has access to the addressed node.
The time delay required by the data telegram to pass the store-and-forward switch depends on the telegram length.
Advantage of “Store and Forward”: The data telegrams are checked for correctness and validity. This prevents faulty or damaged data telegrams from being distributed via the network.
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WAGO Industrial Switches General 19 852-1816 Lean Managed Switch

3.7 Transmission Methods

2 modes are available for data transmission in ETHERNET networks:
• Half duplex
- An ETHERNET device can only send or receive data at one time.
- Collision detection (CSMA/CD) is enabled.
- The length of the network is limited by the propagation delays of the devices and transmission media.
• Full duplex
- An ETHERNET device can send and receive data at the same time.
- Collision detection (CSMA/CD) is disabled.
- The length of the network only depends on the performance limits of the send and receive components used.
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20 Device Description WAGO Industrial Switches 852-1816 Lean Managed Switch

4 Device Description

The 852-1816 is a configurable industrial ETHERNET switch with sixteen 10/100/1000BASE-T ports. Enclosed in a rugged housing, this switch offers both a redundant power supply and relay-based function monitoring. This device also streamlines network management: Commissioning and diagnostics are intuitive and can be performed without extensive IT knowledge. The topology map clearly displays the switch and connected devices. Key diagnostic information is displayed on the diagnostics dashboard.
The following functions increase the robustness, availability and security of the network:
Security:
- Network segmentation per IEEE802.1Q (max. 5 VLANs),
- authentication of network participants per IEEE802.1X,
- firewall functions using access-control list (max. 32 entries)
- service control,
- port security
Availability:
- Rapid Spanning Tree Protocol (RSTP) for meshed and ring networks,
- ETHERNET Ring Protection Switching (ERPS) for up to two rings per switch,
- loop detection and
- storm control on each port
Configuration/Diagnostics/Maintenance:
- Port mirroring,
- Modbus
- SNMP v3,
- SNMP trap events,
- alarm threshold,
- port statistics,
- backup and restore,
- system log,
- syslog server,
- command line interface with SSH/Telnet,
- topology map and
- dashboard
®
registers,
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WAGO Industrial Switches Device Description 21 852-1816 Lean Managed Switch

4.1 View

4.1.1 Front View

Figure 1: Front View of the Lean Managed Switch
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22 Device Description WAGO Industrial Switches
Table 3: Legend for the Figure “Front View of the Lean Managed Switch”
Descrip-
tion
“Device Description” >
“Device Description” > “Display Elements”
“Device Description” > “Display Elements”
Status LED TX port 1000 Mbit/s (1 LED for each port)
“Device Description” > “Display Elements”
Status LED TX port LNK/ACT (1 LED for each port)
“Device Description” > “Display Elements”
“Device Description” > “Connections”
852-1816 Lean Managed Switch
Pos.
1 PWR Status LED, supply voltage
2 RPS Status LED, redundant supply voltage
3 ALM Status LED, alarm
4 -
5 -
6 - Port RJ-45 (10/100M/1000BASE-T) (16)
Meaning For Details, see Section
“Display Elements”
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WAGO Industrial Switches Device Description 23
Table 4: Legend for the Figure “Top View of the Lean Managed Switch”
Descrip-
tion
1 - Grounding screw
-
“Device Description” > “Operating Elements”
Connector (male) for power consumption
"Device Description" >
"Device Description" >
852-1816 Lean Managed Switch

4.1.2 Top View

Figure 2: Top View of the Lean Managed Switch
No.
2 Reset Reset button
3 -
4 - DIP Switches
Meaning For Details see Section
(PWR/RPS/ALM) and potential-free alarm contact
"Connections"
"Operating Elements"
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24 Device Description WAGO Industrial Switches 852-1816 Lean Managed Switch

4.2 Connectors

4.2.1 Grounding screw

The switch must be grounded. Connect the grounding screw to the ground potential. Do not operate the switch without an appropriately installed protective earth conductor.
Figure 3: Grounding screw
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WAGO Industrial Switches Device Description 25
Table 5: Legend for Figure “Power Supply (PWR/RPS)”
Connection
Description
Description
+
PWR
Primary DC input
-
PWR
Primary DC input
+
RPS
Secondary DC input
-
RPS
Secondary DC input
ALM
Contact for external alarm
ALM
Contact for external alarm
852-1816 Lean Managed Switch

4.2.2 Power Supply (PWR/RPS)

The female connector (Item No. 2231-106/026-000) can easily be connected to the 6-pole male connector located on the top of the switch.
The male connector shows the following pin assignment:
Figure 4: Power Supply (PWR/RPS)
Warning: Damage to property caused by electrostatic discharge (ESD)!
DC Powered Switch: Power is supplied through an external DC power source. Since the switch does not include a power switch, plugging its power adapter into a power outlet will immediately power it on.
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Table 6: Legend for Figure “Network Connections”
Desig­nation
16 RJ-45 connections (10/100/1000BASE-T)
“Device Description” > … “10/100/1000BASE-T Ports”
852-1816 Lean Managed Switch

4.2.3 Network Connections

The Lean Managed Switch uses ports with copper connectors and supports ETHERNET and/or Fast ETHERNET.
Figure 5: Network Connections
No.
1 -
Meaning For Details, see Section:
4.2.3.1 RJ45 Connection
The connection to ETHERNET-based fieldbuses is made via the RJ-45 connector. The pin assignment for ETHERNET RJ-45 plugs is specified in the EIA/TIA 568 standard. The conductor colors also correspond to this standard. The pin assignment and conductor color differ depending on the number of assigned conductors (4- or 8-core).
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WAGO Industrial Switches Device Description 27 852-1816 Lean Managed Switch
4.2.3.2 10/100/1000BASE-T-Ports
The 10/100/1000BASE-T ports support networks speeds of 10 Mbit/s, 100 Mbit/s and 1000 Mbit/s and can be operated in half- and full-duplex transmission modes. These ports also provide automatic crossover detection (Auto-MDI/MDI­X), with plug-and-play capabilities. Simply plug the network cables into the ports; they then adapt to the end node devices. We recommend the following cable for the RJ-45 ports:
• Cat. 5e or better with a max. cable length 100 m
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Table 7: Legend for “Device LEDs” Figure
LED
Name
Status
Description
PWR
Primary Power
Green
Use the primary power supply.
Off
Primary power off or failure.
RPS
Redundant
LED
Green
Use the redundant power supply.
Off
Redundant power off or failure.
ALM
Alarm LED
Red
Failure of a port connection; miscellaneous alarm.
Off
No alarm to report.
852-1816 Lean Managed Switch

4.3 Display Elements

The Lean Managed Switch is equipped with device LEDs and port LEDs. You can see the status quickly with the device LEDs, while the port LEDs provide information about connection actions.

4.3.1 Device LEDs

Figure 6: Device LEDs
LED
Power System
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WAGO Industrial Switches Device Description 29
Table 8: Legend for “Port LEDs” Figure
LED
Name
Status
Description
1000
1000BASE T-
port)
LNK/ACT
10/100BASE T-
10/100/1000 Mbit/s connection in operation.
Flashes
Data traffic via connection.
Off
Port disconnected or link failed.
852-1816 Lean Managed Switch

4.3.2 Port LEDs

Figure 7: Port LEDs
Ports LED (1 LED for each
Ports LED (1 LED for each port)
Green 1000 Mbit/s connection in operation.
Off Port disconnected or link failed.
Green
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Table 9: Legend for Figure “DIP Switches”
No.
Name
Status
Description
1
PWR
ON
The alarm reporting function for the primary power supply is activated.
OFF
The alarm reporting function for the primary power supply is deactivated.
2
RPS
ON
The alarm reporting function for the secondary power supply is activated.
OFF
The alarm reporting function for the secondary power supply is deactivated.
852-1816 Lean Managed Switch

4.4 Operating elements

4.4.1 DIP Switches

There is a DIP switch for alarm configuration on the top of the Lean Managed Switch. When the alarm reporting function is active, the alarm contact is switched when an alarm event occurs.
The meaning of the DIP switch settings are described below:
Figure 8: DIP Switches
The user can manually switch the alarm function for the primary or redundant power supply on and off through the DIP switches.
The DIP switch must be “ON” to activate the port alarm function. The default setting is “OFF”.
The following is the recommended procedure for configuring and setting DIP switches during initial installation:
1 Turn all DIP switches to “OFF”.
2 Install the Lean Managed Switch in your network.
3 Select the port(s) to be monitored or the alarm to be activated.
4 Set the DIP switch of the corresponding port to “ON”.
5 Turn the Lean Managed Switch ON.
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Table 10: Legend for Figure “Reset Button”
Name
Status
Description
Reset
Press the Reset button for 2 seconds and release.
The system is restarted.
Delivery state
Press the Reset button for 10 seconds and release.
The system is reset to the switches factory default settings.
852-1816 Lean Managed Switch

4.4.2 Reset Button

Figure 9: Reset Button
Important Note!
Use a suitable object, e.g., ballpoint pen or straightened paper clip, to press the Reset button.
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Table 11: Legend for Figure “Label”
No.
“Serial NO” Description
01
Firmware version (left number sequence)
01
Hardware version (right number sequence)
852-1816 Lean Managed Switch

4.5 Label

4.5.1 Hardware and Software Version

There is a label with the “MAC Address” and “Serial NO” on the back of the Lean Managed Switch.
Figure 10: Label
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WAGO Industrial Switches Device Description 33
Table 12: Technical Data – Device Data
Width
50 mm
Height
120 mm (from the top edge of the carrier rail)
Depth
160 mm
Weight
840 g
Degree of protection
IP30
Table 13: Technical Data – System Data
MAC table
Up to 8000 addresses
VLAN
Port based and tag based (max. 5 VLANs)
Jumbo Frame Size
10 kB
Maximum lengths
10/100/ 1000BASE-TX: 100 m
Table 14: Technical Data – Power Supply
Supply voltage
12 … 60 VDC
852-1816 Lean Managed Switch

4.6 Technical Data

4.6.1 Device Data

4.6.2 System Data

4.6.3 Power Supply

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Table 15: Technical Data – Communication
Ports (copper; RJ-45)
16 x 10/100/1000BASE-T
Standards
IEEE 802.3 10BASE-T
Protection Switching (ERPS)
Table 16: Technical Data ‒ Environmental Conditions
Surrounding air temperature (operation)
-40 … +60 °C
Surrounding air temperature (storage)
-40 °C … +85 °C
UL 61010 Use Pollution degree
Indoor 2
Relative humidity (operation)
10 … 95 % (without condensation)
Relative humidity (storage)
5 … 95 % (without condensation)
Vibration resistance
Acc. IEC 60068-2-6
Shock resistance
Acc. IEC 60068-2-27
EMC-1 immunity to interference
EN 55024
EN 61000-6-2
EMC-1 Emission of interference
FCC Part 15 Subpart B Class A
EN 61000-6-4
852-1816 Lean Managed Switch

4.6.4 Communication

IEEE 802.3u 100BASE-TX/FX IEEE 802.3ab 1000BASE-T Ethernet IEEE 802.3x Flow Control IEEE 802.1d Spanning Tree Protocol (STP) IEEE 802.1w Rapid Spanning Tree Protocol (RSTP) IEEE 802.1Q VLAN Tagging IEEE 802.1p Prioritization IEEE 802.1x Port Authentication IEEE 802.1ab Link Layer Discovery Protocol (LLDP) IEEE 802.1AB LLDP-MED IEEE 802.3az Energy Efficient Ethernet (EEE) ITU-T G8032v1/v2 Ethernet Ring

4.6.5 Environmental Conditions

IEC 61000-4-2 IEC 61000-4-3 IEC 61000-4-4 IEC 61000-4-5 IEC 61000-4-6 IEC 61000-4-8
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WAGO Industrial Switches Device Description 35
Conformity Marking
852-1816 Lean Managed Switch

4.7 Approvals

The following approvals have been granted for the WAGO ETHERNET accessory product “Lean Managed Switch” (852-1816):
Ordinary Locations
UL61010-2-201 (E175199)
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5 Mounting

5.1 Installation Site

The location selected to install the Lean Managed Switch may greatly affect its performance. When selecting a site, we recommend considering the following rules:
• Install the Lean Managed Switch at an appropriate place. See section “Device Description” > … > “Technical Data“ for the acceptable temperature and humidity operating ranges.
Make sure that the heat output from the Lean Managed Switch and ventilation around it is adequate. Do not place any heavy objects on the Lean Managed Switch.

5.2 Installation on a Carrier Rail

The carrier rail must optimally support the EMC measures integrated into the system and the shielding of the internal data bus connections.
Place the Lean Managed Switch onto the DIN rail from the top and snap it into position.

5.3 Removal from Carrier Rail

To remove the Lean Managed Switch from the carrier rail, insert a suitable tool into the metal tab under the switch and deflect the metal tab downward.
You can then release the switch down from the carrier rail and remove it upwards.
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6 Connect Devices

6.1 Power Supply

The switch uses direct current power supply for 12 … 60 V.
The primary and secondary network link is established via a 6-pin plug-in connection located on the top of the Lean Managed Switch.
The female connector (Item No. 2231-106/026-000) is composed of six connecting terminals and can be inserted and removed easily by hand to connect to the 6-pin plug connector located on the top of the switch.
The power supply for the switch automatically adjusts to the local power source and can also be switched On if no or not all patch cables are connected.
1. Connect a suitable grounding conductor to the grounding lug on the top of the switch.
2. Plug the female connector into the male connector of the switch if it has not already been plugged in. Check the tight fit of the multipoint connector by gently shaking it.
3. PWR +/-: To connect or disconnect the conductors, actuate the spring directly in the female connector using a screwdriver or an operating tool and insert or remove the conductor.
4. Check whether the power LED “PWR” on the top of the device lights up when power is supplied to the device. If not, check to ensure that the power cable is plugged in correctly and fits securely.
5. RPS +/-: To connect or disconnect the conductors, actuate the spring in the female connector directly using a screwdriver or an operating tool and insert or remove the conductor.
6. Check whether the power LED “RPS” on the top of the device lights up when power is supplied to the device. If not, check to ensure that the power cable is plugged in correctly and fits securely.
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38 Connect Devices WAGO Industrial Switches 852-1816 Lean Managed Switch

6.2 External Alarm Contact Port

The Lean Managed Switch has an alarm contact connection on the top panel. For detailed instructions on how to connect the alarm contact power wires to the two ALM contacts of the 6-pin female connector, please refer to section “Power Supply (PWR/RPS)” (it is the same procedure).
You can connect the alarm circuit to any warning device already installed in the user's control room or factory floor. When a fault occurs, the Lean Managed Switch sends a signal through the alarm contact to activate the external alarm. The alarm contact has two ports that form a fault circuit for connecting to alarm systems.
An alarm is signaled in the following cases:
1 PWR/RPS:
a Power failure (power cord is disconnected, power supply malfunction, etc.) b Input power falls outside specification (12 … 60 V)
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6.3 10/100/1000BASE-T Ports

The 10/100/1000BASE-T ports (RJ-45 ETHERNET ports) of the industrial switch support both autosensing and autonegotiation.
1 Connect one end of the twisted pair cable of the type Category 3/4/5/5e to
an available RJ-45 port on the industrial switch and the other end to the port of the selected network node.
2 Check the respective port LED on the industrial switch that the connection
is established. (see section “Display Elements” > … > “Port LEDs”).
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Table 17: Default Settings for the Telnet Port
Setting
Default Value
IP Address
192.168.1.254
Subnet Mask
255.255.255.0
Default Gateway
0.0.0.0
Management VLAN
1
Default Username
admin
Default Password
wago
852-1816 Lean Managed Switch

7 Configuration

7.1 Overview of Configuration Options

The Lean Managed Switch provides three options for advanced management features:

7.1.1 Web Based Management

A menu-driven user interface can be called up from the WBM (“Web Based Management”) via the protocols “http” or “https”.
Standard setting
By default, the Lean Managed Switch is set to the "http" protocol.
Using Protocol “https”
If you use the protocol “https”, you must activated this service (see Section “Service Control”.).
Additional Information
Please refer to the section “Configuration in the Web Based Management” for a detailed description.

7.1.2 Telnet or SSH Connection

1. Connect the computer to one of the ETHERNET ports.
2. Open a Telnet/SSH session to the switch’s IP address. If this is your first login, use the default values.
3. Make sure your computer IP address is in the same subnet, unless you are
accessing the switch through one or more routers.
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WAGO Industrial Switches Configuration 41 852-1816 Lean Managed Switch
Using Protocol “Telnet”
If you use the protocol “telnet”, you must activated this service (see Section “Configuration in the Web Based Management” > …> “Service Control”).

7.1.3 Access via Console Port (CLI)

The following describes how to view the device configuration using the command line interface.
1. Connect the computer over SSH or Telnet to the Command Line Interface (CLI) of the switch.
2. Press [ENTER] to open the login screen.
L2SWITCH login:
3. Enter [admin] to go to CLI mode.
L2SWITCH login: admin L2SWITCH>
4. Enter [enable] to switch to privileged mode. Use the following default values for the username and password.
L2SWITCH>enable user:admin password: wago
5. Enter [show running config] to see the current device configuration.
L2SWITCH#show running-config
Additional Information
Please refer to the Section “Appendix” > … > “Configuring in the Command Line Interface (CLI)” for a detailed description.
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8 Diagnostics

Diagnostic will help user and network administrators for quick reference, diagnosing and identifying problems within a system and network. It is a type of network management that helps in finding network connectivity, performance and other related problems in a dashboard.
Changing the colors of the tiles when the threshold value changes
For easy diagnosis, you can set a change in the colors (red, yellow, green) of the tiles when the threshold values are exceeded or not reached (see Section "Dashboard Configuration".
Figure 11: Dashboard - Example
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8.1 Web Based Management for Diagnostic Function

Figure 12: Dashboard

8.1.1 CPU Usage

User can get the switch CPU usage information in % by just one click shown below.
Figure 13: CPU Usage
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8.1.2 Memory Usage

User can get the switch memory usage information in % by just one click shown below.
Figure 14: Memory Usage

8.1.3 Transmitting Port Usage

User can get the switch port Tx utilization information in % by just one click shown below.
Figure 15: Transmitting Port Usage (Example)
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8.1.4 Receiving Port Usage

User can get the switch port Rx utilization information in % by just one click shown below.
Figure 16: Receiving Port Usage (Example)

8.1.5 Transmitting Port Broadcast Rate

The user can get the Transmitting Port Broadcast Rate for every port.
Figure 17: Transmitting Port Broadcast Rate (Example)
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8.1.6 Receiving Port Broadcast Rate

The user can get the Receiving Port Broadcast Rate for every Port.
Figure 18: Receiving Port Broadcast Rate (Example)
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8.1.7 Port Link Down Statistics

User can get the summary of the port link down statistics per hour, day, week and month wise information in just one click shown below.
Figure 19: Port Link Down Statistics (Example)
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8.2 Mouse pointer

User can get the detailed information of the Alarm, Alert, utilization by just pointing the curser on specified as shown below.
Figure 20: LED Information
Figure 21: Port Information - Example
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Table 18: Login Screen
Setting
Default Value
Default username
admin
Default password
wago
852-1816 Lean Managed Switch

8.3 Collapse, User Login, Topology Map

Collapse option is used for the user to get back to home in the dash board.
User Login option is to login to the device for further configuration and maintenance.
Topology Map will show the user about the connectivity.
Figure 22: Collapse, User Login, Topology Map
Once user select login it will redirect to switch login window and below screen will appear.
Figure 23: Log in
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Figure 24: Tab “Information” – Menu “Device Status”
The Web Based Management (WBM)
For a detailed description of the configuration in Web Based Management (WBM), see Section "Configuration in the Web Based Management (WBM)”.
Once user select Topology map option it will appear get to network connectivity connected to this device as shown below.
The switch offers lean network management:
Diagnostics are intuitive and can be performed without IT knowledge. The topology map clearly displays the switch and the connected nodes. Important diagnostic information is visualized.
If the connection is interrupted at a port, the connection line changes color to red.
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Figure 25: Topology Map – Link Down Port 1
Figure 26: Topology Map – Link not registered
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Figure 27: Topology Map – Link Information
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Admin

9 Configuration in the Web Based Management

An internal file system and integrated Webserver can be used for configuration and administration of the system. Together, they are referred to as the Web­Based Management (WBM) system.
The HTML pages saved internally provide you with information about the configuration and status of the fieldbus node. In addition, you can also change the configuration of the device here. You can also save HTML pages you created yourself via the implemented file system.
Always restart after making changes to the configuration!
The system must always be restarted for the changed configuration settings to take effect.
1. To open the WBM, launch a Web browser (e. g. Google Chrome or Mozilla Firefox).
Standard setting
By default, the Lean Managed Switch is set to the "http" protocol.
Using Protocol “https”
If you use “https”, you must activated this service (see Section “Service Control”.).
2. Enter the IP address of the switch.
3. Click [Enter] to confirm.
4. Enter your user name and password in the query dialog:
User = “admin”
Password = “wago”
5. The start page of WBM loads.
6. Make the desired settings.
7. Click [Submit] to confirm your changes, or click [Delete] to discard your changes.
8. To apply the settings, confirm your changes with the [Save] button.
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Table 19: Overview – Navigation Links and WBM Pages
Navigation Links and WBM Pages
[Information]
[Device Status]
• Device Details
Operating Time
[Legal Information]
• WAGO Licenses
WBM Licenses
[Port Counter]
• Port Counter
[Utilization Information]
• Utilization Information
[Configuration]
[Device Discovery]
• LLDP
LLDP Neighbor Information
• Manual Registration
Manual Registration Information
[Interface]
• Loop Detection
Port Priority Status
852-1816 Lean Managed Switch
You can access the corresponding WBM pages via the links in the navigation bar:
• Network Details
•
• Open Source Licenses
•
• LLDP Settings
•
• Manual Registration Settings
•
• Configuration Settings
• Configuration Status
• Mirror
• Port Mirror Settings
• Port Setup
• Port Setup
• Port Status
• Port Priority
• Port Priority Settings
•
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[SNMP]
• Event Settings
SNMPv3 View Status
[System Management]
• General Setup
User Account List
[Storm Control]
• Storm Control Settings Storm Control Status
852-1816 Lean Managed Switch
• Trap Event State Settings
• Port Event Settings
• Port Link-Change Trap Settings
• Port Link-Change Trap Status
• SNMP Setup
• SNMP Setup
• Community Name List
• SNMP Trap
• Trap Receiver Settings
• Trap Receiver List
• SNMPv3 Group
• SNMPv3 Group Settings
• SNMPv3 Group Status
• SNMPv3 User
• SNMPv3 User Settings
• SNMPv3 User Status
• SNMPv3 View
• SNMPv3 View Settings
•
• TCP/IP Configuration
• Hostname
• Management VLAN
• SNTP
• Current Time and Date
• Time and Date Settings
• User Account
• Add New User
•
•
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[Security]
[802.1X]
• Global Setup
Port Status
[ACL]
• Access Control List Settings Access Control List Status
[Port Security]
• Port Security Settings Port Security Status
[Service Control]
• Service Settings
[VLAN]
• Port Isolation
VLAN Setup
[Redundancy]
[ERPS]
• ERPS Setup
[STP/RSTP]
• STP/RSTP Setup
Port Status
852-1816 Lean Managed Switch
• Global Setup
• Global Status
• Port Setup
• Port Setup
•
•
•
• Port Isolation Settings
• Egress Port
• VLAN Setup
•
• Configuration Status
• Spanning Tree Protocol Settings
• STP/RSTP Port Setup
• Port Parameter Settings
•
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[Diagnostic]
[Alarm]
• Information
Port Utilization Status
[Dashboard Configuration
• Port Registration Learn
Critical/Alert Thresholds
[Modbus]
• Modbus TCP Setting Modbus TCP Information
[SNMP]
• Event Settings
SNMPv3 User Status
852-1816 Lean Managed Switch
• Alarm Information
• DIP Status
• DIP Switch Status
• Traffic Flooding
• Traffic Flooding Settings
• Traffic Flooding Status
• Port Utilization
• Port Utilization Settings
•
• Port Link Down Statistics
•
•
• Trap Event State Settings
• Port Event Settings
• Port Link-Change Trap Settings
• Port Link-Change Trap Status
• SNMP Setup
• SNMP Setup
• Community Name List
• SNMP Trap
• Trap Receiver Settings
• Trap Receiver List
• SNMPv3 Group
• SNMPv3 Group Settings
• SNMPv3 Group Status
• SNMPv3 User
• SNMPv3 User Settings
•
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SNMPv3 View Status
[System Log]
• Syslog Server Settings
[Maintenace]
• Reboot
Reset Configuration
852-1816 Lean Managed Switch
• SNMPv3 View
• SNMPv3 View Settings
•
• Upgrade Firmware
• Upload Configuration
• Download Configuration
•
The settings/configuration of the Lean Managed Switch can be made on these WBM pages. There are tab pages on some WBM pages for the settings/configurations.
The default values are displayed in bold.
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Table 20: Tab “Information” – Menu “Device Status” – “Device Details”
Parameter
Description
Product Description
This display field shows the model name of the switch.
Host Name
This display field shows the host name of the switch.
Serial No.
This display field shows the serial number.
Boot Code Version
This display field shows the boot code version.
Built Date
This display field shows the create date of the primary firmware currently installed.
852-1816 Lean Managed Switch

9.1 Information

9.1.1 Device Status

Figure 28: Tab “Information” – Menu “Device Status” – “Device Details”
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Table 21: Tab “Information” – Menu “Device Status” – “Network Details”
Parameter
Description
MAC Address
This display field shows the MAC (Media Access Control) address of the switch.
IP Address
This display field shows the IP address of the switch.
IP Source
This display field shows the Static IP or DHCP.
Subnet Mask
This display field shows the subnet mask of the switch.
Default Gateway
This display field shows the default gateway of the switch.
Table 22: Tab “Information” – Menu “Device Status” – “Operating Time”
Parameter
Description
Total
This display field shows the operating time (dd:hh:mm:ss).
852-1816 Lean Managed Switch
Figure 29: Tab “Information” – Menu “Device Status” – “Network Details”
Figure 30: Tab “Information” – Menu “Device Status” – “Operating Time”
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9.1.2 Legal Information

In this menu, you can find informations about:
- WAGO Licenses
- Open Source Licenses and
- WBM Licenses
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Table 23: Tab “Information” – Menu “Port Counter”
Port Statistics
Parameter
Default
Description
Port This column shows the port numbers.
Receive Drops
This column displays the number of dropped data packets on the receiving line.
Transmit Drops
This column displays the number of dropped data packets on the transmission line.
Receive Errors
This column displays the errors on the receiving line.
Transmit Errors
This column displays the errors on the transmission line.
Receive Packets
This column displays the number of data packets received since power ON.
Transmit Packets
This column displays the number of data packets
Receive Bytes
This column displays the number of bytes received
Transmit Byte
This column displays the number of bytes sent on the port since power ON.
852-1816 Lean Managed Switch

9.1.3 Port Counter

Figure 31: Tab “Information” – Menu “Port Counter”
transmitted since power ON.
on the port since power ON.
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Table 24: Tab “Information” – Menu “Utilization Information”
Port Utilization Status
Parameter
Default
Description
Port This column shows the port numbers.
Speed
This column displays the transfer rate.
RX Port Utilization (%)
This column displays the RX bandwidth utilization as a percentage.
RX Port Utilization (bps)
This column displays the RX bandwidth utilization in bps.
TX Port Utilization (%)
This column displays the TX bandwidth utilization as a percentage.
RX Port Utilization (bps)
This column displays RX bandwidth utilization in bps.
852-1816 Lean Managed Switch

9.1.4 Utilization Information

Figure 32: Tab “Information” – Menu “Utilization Information”
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Table 25: Tab “Configuration – Menu “LLDP Settings”
LLDP Settings
Parameter
Default
Description
State
The LLDP function is globally not enabled for
The LLDP function is globally enabled for the
852-1816 Lean Managed Switch

9.2 Configuration

9.2.1 Device Discovery

9.2.1.1 LLDP
The LLDP (“Link Layer Discovery Protocol”) described in this standard allows stations connected to a LAN according to IEEE 802® to send information to other stations connected to the same LAN. The information includes essential system functions, including the management address or addresses of an entity or entities that provide management of these functions, as well as identification of the station’s access point to the IEEE802 LAN required by the management entity or entities.
For LLDP protocol devices.
If enabled, LLDP protocol devices information will appear on the topology map. The switch information will be shared with other devices connected within the same network
Figure 33: Tab “Configuration” – Menu “LLDP Settings”
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the switch.
switch.
WAGO Industrial Switches Configuration in the Web Based Management 65
Table 26: Tab “Configuration” – Menu “LLDP Neighbor Information”
LLDP Neighbor Information
Parameter
Default
Description
Local Port X
This field displays the port numbers.
Remote Port ID
This field displays the ID of the connected port.
Chassis ID
This field displays the neighbor port’s chassis ID.
System Name
This field displays the neighbor port’s system name.
System Description
This field displays the neighbor port’s system description.
System Capabilities
This field displays the system capabilities of the neighbor port.
Management IP
This field displays the neighbor port’s management address.
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Figure 34: Tab “Configuration” – Menu “LLDP Neighbor Information”
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9.2.1.2 Manual Registration
Manual input of the device information
The users need to input the device information manually to appear on the topology map.
Figure 35: Tab “Configuration” – Menu “Manual Registration”
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Table 27: Tab “Configuration” – Menu “Manual Registration”
Manual Registration Settings
Parameter
Default
Description
Device
PLC
Wir eles s
Select the suitable device nam e in the selection box.
MAC Address
In the input field, enter the MAC address of the device.
IP In the input field, enter the IP address of the device.
Product Name
In the input field, enter the product name of the device.
System Name
In the input field, enter the system name of the
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Switch Camera Computer Display Machine Notebook Others Router Server
device.
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9.2.2 Interface

9.2.2.1 Loop Detection
“Loop Detection” handles problems with loops in the network periphery. These problems can occur if a port is connected to a switch that is in a loop state. A loop state occurs as a result of user error. It happens when two ports on a switch are connected with the same cable. When a switch in loop state sends out broadcast messages, the messages loop back to the switch and are re-broadcast again and again, causing a “Broadcast Traffic flooding.”
The “Loop Detection” function sends probe packets periodically to detect whether the port is connected to a network in loop state. The switch shuts down a port if the switch detects probe packets looping back to the same port.
9.2.2.1.1 Loop Recovery
When “Loop Detection” is enabled, the switch sends a probe packet every two seconds and waits to receive the packet. If it receives the packet at the same port, the switch disables the port. After a defined time period (“Recovery Time”), the switch re-enables the port and executes “Loop Detection” again.
The switch generates a “Syslog” (system log), internal log messages and “SNMP Traps” if it disables a port after “Loop Detection.”
Loop detection
Loop detection is a link-layer protocol designed for Ethernet networks. An interface with loop detection enabled identify and remove the loops in the same network.
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Figure 36: Tab “Configuration” – Menu “Loop Detection” – “Configuration Settings”
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Table 28: Tab “Configuration” – Menu “Loop Detection” – “Configuration Settings”
Configuration Settings
Parameter
Default
Description
Global State
The Loop Detection function is not enabled for the switch.
The Loop Detection function is enabled for the switch.
MAC Address
In the input field, enter the destination MAC address
receives the same packets, it is shut down.
Port Range
1 … 8 (16)
Select a port or port range in the selection box for
settings.
1 … 8 (16)
Select a port or port range in the selection box for
settings.
Port State
Disable
Select “Disable” in the selection box to disable the
Enable
Select “Enable” in the selection box to enable the “Loop Detection” function for the switch.
Recovery State
Enable
Select “Enable” in the selection box to automatically
Time” has elapsed.
Disable
Select “Disable” in the selection box to disable this function.
Recovery Time
1
In the input field, enter the value for the “Recovery
Time: 1 … 60 min
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to which the probe packets should be sent. If the port
which you want to configure the “Loop Detection”
which you want to configure the “Loop Detection”
“Loop Detection” function for the switch.
(min) (Range: 1~60)
re-enable the port after the designated “Recovery
Time” (in minutes) that the switch waits before re­enabling the port.
Figure 37: Tab “Configuration” – Menu “Loop Detection” – “Configuration Status” (Exam ple)
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Table 29: Tab “Configuration” – Menu “Loop Detection” – “Configuration Status” (Example)
Loop Detection Status
Parameter
Default
Description
Port
1 … 8 (16)
This column shows the port numbers.
State
Enable Disable
This column indicates whether the “Loop Detection” function is enabled or disabled.
Status
None Norm al
This column indicates whether a port is blocked.
Manual Recovery
This column indicates whether the manual recovery is complete.
Recovery State
Enable Disable
This column indicates whether the “Loop Recovery” function is enabled or disabled.
Recovery Time (min)
1 … 60
This column displays the “Recovery Time” for the “Loop Detection” function.
Edit Preselection for editing.
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9.2.2.2 Mirror
Port mirroring is used on switches to send a copy of network packets sent/received on one switch port or a range of switch ports to a network monitoring connection on another switch port (Monitor Port).
Port mirroring is used in network systems that require monitoring of network traffic, such as an IDS (“Intrusion Detection System”).
Port mirroring, together with an NTA (“Network Traffic Analyzer”), can help to monitor network traffic. Users can monitor the selected ports (“Source Ports”) for egress and/or ingress packets.
Source Mode
• “Ingress”: The incoming data packets are copied and forwarded to the monitor port.
• “Egress”: The outgoing data packets are copied and forwarded to the monitor port.
Important Note!
1. The monitor port cannot be a trunk member port.
2. The monitor port cannot be an ingress or egress port.
3. If a port has been configured as a source port and the user configures the port as a destination port, the port will be removed from the source ports automatically.
9.2.2.2.1 Port Settings
Duplex Mode
A duplex communication system is a system composed of two connected devices that can communicate with each other in both directions.
Half-Duplex
A half-duplex system provides for communication in both directions, but only one direction at a time (not simultaneously). One device receives a signal and must wait for the other device to stop transmitting before replying.
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Figure 38: Half-Duplex Mode
Full-Duplex
A full-duplex system (also known as a double-duplex system) can communicate simultaneously in both directions. Fixed-line telephone networks, for example, are full-duplex, since both callers can talk and listen at the same time.
Figure 39: Full-Duplex Mode
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Auto MDI/MDIX
MDI (“Medium-Dependent Interface”) is part of the transmitter/receiver unit (transceiver) of a network device.
Auto-MDIX (“Automatic Medium-Dependent Interface Crossover”) is a network technology integrated in the port that automatically detects the required network cable type (“Straight-through” or “Crossover” cable) and configures the connection accordingly. “Crossover” cables are then unnecessary for connecting devices. The interface corrects incorrect cabling automatically. For Auto-MDIX to work properly, the speed must be set to “Auto” for the interface and in the duplex settings.
Auto-Negotiation
Auto-negotiation is a method in which two interconnected ETHERNET network ports (e.g., the network port of a PC and a port of a router, hub or switch that is connected to it) independently negotiate and configure the maximum transmission speed and the duplex process. Auto-negotiation only applies to twisted-pair cables – not to WLAN, fiber optic or coaxial cable connections.
If the port does not support auto-negotiation or turns off this feature, the switch determines the connection speed by detecting the signal on the cable and using half duplex mode. If auto-negotiation is enabled on the switch, a port uses its pre-configured settings for speed and duplex mode when establishing the connection. This should ensure that the same settings have been made on the port, allowing the connection to be established.
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Flow Control
“Flow Control” regulates the transmission of signals by adjusting them to the bandwidth on the input port. Higher data traffic on the port decreases the bandwidth and can overflow the buffer memory, which can lead to packet and frame loss.
According to IEEE 802.3x, the switch uses “Flow Control” in full-duplex mode and “Backpressure Flow Control” in half-duplex mode.
With flow control, the switch is used in full-duplex mode to send a pause signal to the sending port, causing it to temporarily stop sending signals when the receiving port memory buffers fill.
For “Backpressure Flow Control“, the switch sends a collision signal to the sending port in half-duplex mode (mimicking a state of packet collision), causing the sending port to temporarily stop sending signals and to resend the signals later.
Support for “Force Mode”
1000 BASE-T does not support “Force Mode”.
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Table 30: Tab “Configuration” – Menu “Mirror” – “Port Mirroring Settings”
Port Mirror Settings
Parameters
Default
Description
Enable State
The mirror function is not enabled for the switch.
The mirror function is enabled for the switch.
Source Port
1 … 8 (16)
Select the source port for the mirror function in the selection field.
Destination Port
1 … 8 (16)
Select the destination port for the mirror function in the selection field.
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Using the Port Mirroring
The Port Mirroring is used for network monitoring by sending a copy of entering or existing network packets on a port of the switch to one or a range of switch ports.
Figure 40: Tab “Configuration” – Menu “Mirror” – “Port Mirroring Settings”
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9.2.2.3 Port Setup
Select a range of ports
Range of ports can be selected to enable/disable the state with duplex (speed).
Figure 41: Tab “Configuration” – Menu “Port Setup” – “Port Setup”
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Table 31: Tab “Configuration” – Menu “Port Setup” – “Port Setup”
Port Setup
Parameters
Default
Description
Port Range
1 … 8 (16)
Select a port or port range in the selection box for which you want to configure the “Mirror” settings.
1 … 8 (16)
Select a port or port range in the selection box for which you want to configure the “Mirror” settings.
Port State
Disable
Select “Disable” to disable the port.
Enable
Select “Enable” to enable the port.
Speed/Duplex
Auto
Select the speed and duplex mode of the port.
10 Mbit/s / Full
10 Mbit/s / Half
100 Mbit/s /
100 Mbit/s / Half
1000 Mbit/s / Full
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Nway means Autonegotiation in the Ethernet.
Full
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Table 32: Tab “Configuration” – Menu “Port Setup” – “Port Status” (Example)
Port Status
Parameters
Default
Description
Port
1 … 8
This column displays the port numbers.
State
This column displays if the port is enabled or disabled.
Speed/Duplex
This column displays the configured speed
mode (full or half-duplex) for a port.
Status
This column displays the deviations.
Link Status
This column displays the link status of a port. If the
connected.
Edit Preselection for editing.
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Figure 42: Tab “Configuration” – Menu “Port Setup” – “Port Status” (Example)
(10 Mbit/s, 100 Mbit/s or 1000 Mbit/s) and duplex
port is up, the speed, duplex mode and “Flow Control” settings are displayed. “Link Up” displays that the port is either disabled or no device is
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Table 33: Tab “Configuration” – Menu “Port Priority” – “Port Priority Settings”
Port Priority Settings
Parameter
Default
Description
Port Range
1 … 8 (16)
Select a port or port range in the selection box for
settings.
1 … 8 (16)
Select a port or port range in the selection box for
settings.
Port Priority
Low
In this selection box, select “Low” for applications with high data transfer.
Medium
In this selection box, select “Medium” for normal applications.
High
In this selection box, select “High” for time critical
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9.2.2.4 Port Priority
Typically, networks operate on a best-effort delivery basis, which means that all traffic has equal priority and an equal chance of being delivered in a timely manner. When congestion occurs, all traffic has an equal chance of being dropped.
Using Port Priority feature, you can select specific network traffic, and prioritize it according to its relative importance. Implementing Port Priority in your network makes network performance more predictable and bandwidth utilization more effective.
Select the priority of ports
Range of ports can be selected to priority of low/medium/high.
Figure 43: Tab “Configuration” – Menu “Port Priority” – “Port Priority Settings”
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which you want to configure the “Port Setup”
which you want to configure the “Port Setup”
applications.
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Table 34: Tab “Configuration” – Menu “Port Priority” – “Port Priority Status” (Example)
Port Priority Status
Parameters
Default
Description
Port
1 … 8 (16)
This column displays the port numbers.
Priority
Low
High
This column displays the priority of the port.
Edit Preselection for editing.
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Figure 44: Tab “Configuration” – Menu “Port Priority” – “Port Priority Status” (Example)
Medium
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9.2.3 SNMP

SNMP (“Simple Network Management Protocol”) is used in network management systems to monitor network-attached devices for conditions that warrant administrative attention. SNMP is a component of the Internet Protocol Suite as defined by the Internet Engineering Task Force (IETF). It consists of a set of standards for network management, including an application layer protocol, a database schema, and a set of data objects.
SNMP exposes management data in the form of variables on the managed systems, which describe the system configuration. These variables can then be queried (and sometimes set) by managing applications.
SNMP community act like passwords and are used to define the security parameters of SNMP clients in an SNMP v1 and SNMP v2c environments. The default SNMP community is “public” for both SNMP v1 and SNMP v2c..
Network ID of Trusted Host:
The IP address is a combination of the Network ID and the Host ID.
Network ID = (Host IP & Mask).
User need only input the network ID and leave the host ID to 0. If user has input the host ID, such as 192.168.1.102, the system will reset the host ID, such as 192.168.1.0.
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9.2.3.1 Event Settings
Select the type of SNMP trap event
SNMP trap event type can be selected to trigger SNMP Manager.
Figure 45: Tab “Configuration” – Menu “SNMP” – “Event Settings” – “Trap Event State Settings”
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Table 35: Tab “Configuration” – Menu “SNMP” – “Event Settings” – “Trap Event State Settings”
Trap Event State Settings
Parameter
Default
Description
Alarm-Over-Heat
Enables/disables the SNMP trap when the system temperature is too high.
Alarm-Over-Load
Enables/disables the SNMP trap when the system is over load.
Alarm-Power-Fail
Enables/disables the SNMP trap when system capacity is
- RPS undervoltage
BPDU
Enables/disables the SNMP trap when the port is blocked by
- BPDU port state changed
Loop-Detection
Enables/disables the SNMP trap when the port is blocked by loop detection.
Port-Admin-State­Change
Enables/disables the SNMP trap when the port is enabled/disabled by the Administrator.
Port-Link-Change
Enables/disables the SNMP trap when the port switches between upward and downward.
STP-Topology-Change
Enables/disables the SNMP trap when the STP topology changes.
Traffic-Alarm
Port Utilization)
Enables/disables the SNMP trap when the port is blocked by
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- overvoltage
- undervoltage
- RPS overvoltage
- BPDU Guard
- BDPU Root
(Traffic Flooding and
the traffic monitor.
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Table 36: Tab “Configuration” – Menu “SNMP” – “Port Event Settings” – “Port Link-Change Trap Settings”
Port Link-Change Trap Settings
Parameter
Default
Description
Port Range
1 … 8 (16)
Select a port or port range in the selection box for
settings.
1 … 8 (16)
Select a port or port range in the selection box for
settings.
Port State
Disable
Select “Disable” in the selection box to disable the “Port Event Settings” function for the switch.
Enable
Select “Enable” in the selection box to enable the
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9.2.3.2 Port Event Settings
Generate port link-change trap
To generate port link-change trap user enable/disable for individual or the range.
Figure 46: Tab “Configuration” – Menu “SNMP” – “Port Event Settings” – “Port Link-Change Trap Settings”
which you want to configure the “Port Event Settings”
which you want to configure the “Port Event Settings”
“Port Event Settings” function for the switch.
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Table 37: Tab “Configuration” – Menu “SNMP” – “Port Event Settings” – “Port Link-Change Trap Status” (Example)
Port Link-Change Trap Status
Parameter
Default
Description
Port
1 … 8 (16)
This column displays the port range.
State
Enable Disable
This field displays the port status. Edit Preselection for editing.
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Figure 47: Tab “Configuration” – Menu “SNMP” – “Port Event Settings” – “Port Link-Change Trap Status” (Example)
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9.2.3.3 SNMP Setup
Simple Network Management Protocol (SNMP)
Configure the Simple Network Management Protocol (SNMP) services.
Figure 48: Tab “Configuration” – Menu “SNMP” – “SNMP Setup” – “SNMP Setup”
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Table 38: Tab “Configuration” – Menu “SNMP” – “SNMP Setup” – “SNMP Setup”
SNMP Setup
Parameter
Default
Description
Enable State
The “SNMP Setup” function is not enabled for the switch.
The “SNMP Setup” function is enabled for the switch.
Community String
Enter a “Community string”; this will act as a
the SNMP agent.
Rights
Read-Only
Select “Read-Only” in the selection box to allow the
information from the switch.
Read/
Select “Read/Write” in the selection box to allow the
MIBs (configure settings on the switch).
Network ID of Trusted
Enter the IP address of the remote SNMP
192.168.1.0).
Number of Mask Bit (1-32)
Select the length of the subnet mask bits in the selection field.
Comm unity Name List
Parameter
Default
Description
No. This column displays the “Community” number. It is
“Community.”
Community String
This column displays the “SNMP Community String.” This is a text element that acts as a password.
Rights
Read-Only,
This column displays the rights for the “SNMP
Network ID of the Trusted
This column displays the IP address of the remote Number of Mask Bit
This column displays the subnet mask for the IP address of the remote SNMP management station.
Action
Click [Delete] to delete a specific “Community String.”
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password for requests from the management station. An SNMP community string is a text string that acts as a password. It is used to authenticate messages that are sent between the management station (the SNMP manager) and the device (the SNMP agent). The “Community String” is included in every packet that is transmitted between the SNMP manager and
SNMP manager using this string to collect
Host
Host
Write
Read/ Write
SNMP manager using this string to create or edit
management station in decimal-point notation (e.g.,
used for identification only. Click a number to modify the setting for a specific
Community String.”
SNMP management station after it has been modified by the subnet mask.
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9.2.3.4 SNMP Trap
Trap Receiver Settings
Configure SNMP trap receiver IP, community, version to send the events to SNMP Manager.
Figure 49: Tab “Configuration” – Menu “SNMP” – “SNMP Trap” – “Trap Receiver Settings”
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Table 39: Tab “Configuration” – Menu “SNMP” – “SNMP Trap” – “Trap Receiver Settings”
Trap Receiver Settings
Parameter
Default
Description
IP Address
Enter the IP address of the remote trap station in decimal-point notation.
Version
v1
Select “v1” in the selection box if you want to use SNMP Version v1.
v2c
Select “v2c” in the selection box if you want to use SNMP Version v2c.
Community String
Enter the IP address of the remote SNMP
192.168.1.0).
Trap Receiver List
Parameter
Default
Description
No. This column displays the “Community” number. It is
“Community.”
IP Address
This column displays the IP address of the remote trap station.
Version
v1 v2c
This column displays the SNMP version in use.
Community String
This column displays the “Community String” used by the remote trap station.
Action
Click the [Delete] button to delete a configured trap receiver station.
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management station in decimal-point notation (e.g.,
used for identification only. Click a number to modify the setting for a specific
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9.2.3.5 SNMPv3 Group
Possibilities of SNMPv3 groups
The SNMPv3 groups allow you to combine users into groups of different authorization and access privileges.
Figure 50: Tab “Configuration” – Menu “SNMP” – “SNMPv3 Group”
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Table 40: Tab “Configuration” – Menu “SNMP” – “SNMPv3 Group”
SNMPv3 Group Settings
Parameter
Default
Description
Group Name
In the input field, enter the group name for the SNMPv3 group.
Security Level
This selection box is used to select the security level.
noauth
priv
Select the respective security level in the selection
Read View
None
In the input field, enter the name of the obj ects that
readable.
Write View
None
In the input field, enter the name of the obj ects to Notify View
None
In the input field, enter the name of the obj ect that
notifications its users can receive.
SNMPv3 Group Status
Parameter
Default
Description
Group Name
This column displays the group name.
Security Model
This column displays the selected security level.
(USM)
Security Level
This column displays the selected security level.
Read View
This column displays the Read view.
Write View
This column displays the Write view.
Notify View
This column displays the Notify view.
Action
Click [Delete] to delete a specific entry.
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auth
box.
should be available in the Read view. If you do not enter an object, all objects will be
which you want to grant write access. If no write or notify view is defined, no write access is granted and no objects can send notifications to members of the group.
can receive user notifications. By using a notify view, a group determines the list of
Always displayed v3: User-based Security Model
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9.2.3.6 SNMPv3 User
SNMPv3 Agent support
SNMPv3 Agent provides support for three levels of users, which will be combined to group.
Figure 51: Tab “Configuration” – Menu “SNMP” – “SNMPv3 User”
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Table 41: Tab “Configuration” – Menu “SNMP” – “SNMPv3 User”
SNMPv3 User Settings
Parameter
Default
Description
User Name
In the input field, enter a new user name, or modify an existing user name.
Group Name
In the input field, enter the group name for the SNMPv3.
Security Level
This selection box is used to select the security level.
noauth
If you selected “noauth” in the selection box, you then
Algorithm.”
auth
If you selected “auth” in the selection box, you then
Password.”
priv
If you selected “priv” in the selection box, you then
and the “Priv Password.”
SNMPv3 User Status
Parameter
Default
Description
User Name
This column displays the user name.
Group Name
This column displays the group name.
Auth Protocol
This column displays the selected “Auth Algorithm.”
Priv Protocol
This column displays the selected “Priv Algorithm.”
Action
Click [Delete] to delete a specific entry.
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cannot change the “Auth Algorithm” or the “Priv
can change the “Auth Algorithm” and the “Auth
can change the “Auth Algorithm,” the “Priv Algorithm”
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9.2.3.7 SNMPv3 View
Display SNMPv3 configuration
It will display the SNMPv3 configuration on the device.
Figure 52: Tab “Configuration” – Menu “SNMP” – “SNMPv3 View”
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Table 42: Tab “Configuration” – Menu “SNMP” – “SNMPv3 View”
SNMPv3 View Settings
Parameter
Default
Description
View Name
In the input field, enter the name for the SNMPv3 view.
View Subtree
In the input field, enter the name for the subtree.
View Type
included
If you selected “included” in the selection box, the subtree is inserted
excluded
If you selected “excluded” in the selection box, the
SNMPv3 View Status
Parameter
Default
Description
View Name
This column displays the name of the SNMPv3 view.
View Subtree
This column displays the name of the subtree.
View Type
Inserted
This column displays the selected type. Action
Click [Delete] to delete a specific entry.
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subtree is not inserted.
Removed
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9.2.4 System Management

9.2.4.1 General Setup
Host Name
The hostname is same as the SNMP system name. Its length is up to 64 characters.
Configure the switch management
Configure the switch management, static/DHCP, IP address, VLAN etc.
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Figure 53: Tab “Configuration” – Menu “System Management” – “General Setup”
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Table 43: Tab “Configuration” – Menu “System Management” – “General Setup”
TCP/IP Configuration
Parameters
Default
Description
IP Source
Static IP
DHCP
This selection box is used to select the option for the IP source.
IP Address
192.168.1.254
Enter the IP address of the switch in decimal-point notation.
Subnet Mask
255.255.255.0
Enter the IP subnet mask of the switch in decimal­point notation.
Default Gateway
0.0.0.0
Enter the IP address of the default outgoing gateway in decimal-point notation.
Hostname
Parameters
Default
Description
Currently Used
L2SWITCH
This column displays the host name.
Configured
In the input field, enter the host name.
Management VLAN
Parameters
Default
Description
Currently Used
1
This column displays the management VLAN.
Configured
In the input field, enter the management VLAN.
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9.2.4.2 SNTP
SNTP (“Simple Network Time Protocol”) is a protocol for synchronizing clocks in computer systems. It is a less complex implementation of an NTP (“Network Time Protocol”). SNTP uses UTC – “Coordinated Universal Time” (French: “Temps Universel Coordonné”). No information on time zones or daylight savings time is transmitted. This information falls outside the protocol range and must be obtained separately.
The SNTP port is 123.
Note!
1. The SNTP server always replies the current UTC time.
2. If the switch receives the SNTP reply time, it adjusts the time to the time zone configuration and configures the time for the switch accordingly.
3. If the time server’s IP address is not configured, the switch does not send an SNTP request packet.
4. If the switch does not receive an SNTP reply packet, it repeats the challenge indefinitely every ten seconds.
5. If the switch receives an SNTP reply, it repeats the time request from the NTP server every hour.
6. If the time zone and NTP server changes, the switch repeats the request process.
7. No default SNTP server.
Manual Version 1.0.0
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