Siemens SCALANCE X-300 Instruction sheet

SCALANCE X-300 / X-400
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SIMATIC NET
Industrial Ethernet Switches
SCALANCE X-300 / X-400
Configuration Manual
10/2014
C79000
-G8976-C187-22
Preface
Introduction
1
Network management for
industrial networks
2
Assignment of an IP address
3
Configuration using Web
Based Management and
Command Line Interface
4
Configuration and
diagnostics over SNMP
5
PROFINET IO functionality
6
C-PLUG
7
Firmware update
8
Appendix A
A
Appendix B
B
Appendix C
C
Appendix D
D
Appendix E
E

Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
C79000-G8976-C187-22
Ⓟ
10/2014 Subject to change
Copyright © Siemens AG 2006 - 2014.
All rights reserved
Legal information
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NOTICE
indicates that property damage can result if proper precautions are not taken.
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The product/system described in this documentation may be operated only by
personnel qualified
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WARNING
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Disclaimer of Liability
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described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.

SCALANCE X-300 / X-400
Configuration Manual, 10/2014, C79000-G8976-C187-22 3
Preface
Purpose of the manual
This manual supports you when configuring the SCALANCE X-300 and X-400 Industrial
Ethernet switches. It outlines the technical options provided by a SCALANCE X-300/X-400
and describes how to configure with Web Based Management and the Command Line
Interface.
Validity of this manual
This manual is valid for the following software versions:
●SCALANCE X-300/X408-2 as of firmware version 3.9.2
●SCALANCE X414-3E as of firmware version 3.10.0
●Primary Setup Tool as of version 3.1.0
●SNMP/OPC server as of version 6.2.1
This manual is valid for the following products lines:
●SCALANCE X-300
●SCALANCE X-400
Within the SCALANCE X-300 product line, there are several product groups (see also the
product overview in the "Operating Instructions Industrial Ethernet Switches SCALANCE X-
300").
Names of the devices in this configuration manual
The descriptions in this configuration manual always apply to the devices of the
SCALANCE X-300 and SCALANCE X-400 product lines listed under "Validity of the manual"
in this configuration manual unless the description relates to a specific device of the product
line. In the remainder of the description, the devices are called "IE switches".
SIMATIC NET glossary
Explanations of many of the specialist terms used in this documentation can be found in the
SIMATIC NET glossary.
You will find the SIMATIC NET glossary here:
●SIMATIC NET Manual Collection or product DVD
The DVD ships with certain SIMATIC NET products.
●On the Internet under the following entry ID:
50305045 (http://support.automation.siemens.com/WW/view/en/50305045)

Preface
SCALANCE X-300 / X-400
4Configuration Manual, 10/2014, C79000-G8976-C187-22
Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, solutions, machines, equipment and/or networks. They are
important components in a holistic industrial security concept. With this in mind, Siemens’
products and solutions undergo continuous development. Siemens recommends strongly
that you regularly check for product updates.
For the secure operation of Siemens products and solutions, it is necessary to take suitable
preventive action (e.g. cell protection concept) and integrate each component into a holistic,
state-of-the-art industrial security concept. Third-party products that may be in use should
also be considered. For more information about industrial security, visit
http://www.siemens.com/industrialsecurity.
To stay informed about product updates as they occur, sign up for a product-specific
newsletter. For more information, visit http://support.automation.siemens.com.
Trademarks
The following and possibly other names not identified by the registered trademark sign ®are
registered trademarks of Siemens AG:
SIMATIC NET, SCALANCE, C-PLUG, OLM
License conditions
Note
Open source software
Read the license conditions for open source software carefully before using the product.
You will find license conditions in the following documents on the supplied data medium:
●DOC_OSS-SCALANCE-X_74.pdf
●DC_LicenseSummaryScalanceX300_76.pdf
●DC_LicenseSummaryScalanceX400_76.pdf
You will find these documents on the product DVD in the following directory: /Open Source
Information

SCALANCE X-300 / X-400
Configuration Manual, 10/2014, C79000-G8976-C187-22 5
Table of contents
Preface ................................................................................................................................................... 3
1 Introduction............................................................................................................................................. 9
1.1 Technical documentation for SCALANCE X-300/X-400...........................................................9
2 Network management for industrial networks ........................................................................................ 11
2.1 Configuration options with a SCALANCE X-300/X-400..........................................................11
2.2 Functionality and properties of a SCALANCE X-300/X-400...................................................12
2.3 Options of media redundancy.................................................................................................18
2.3.1 Media redundancy in ring topologies ......................................................................................18
2.3.2 MRP ........................................................................................................................................20
2.3.3 MRP multiple rings..................................................................................................................23
2.3.4 HRP.........................................................................................................................................24
3 Assignment of an IP address................................................................................................................. 25
3.1 Structure of an IP address ......................................................................................................26
3.2 Initial assignment of an IP address.........................................................................................27
3.3 Assigning an IP address over the serial interface of the SCALANCE X-400 .........................28
3.4 Assigning addresses with the BOOTP client ..........................................................................29
3.5 Assigning addresses with the DHCP client ............................................................................30
3.6 Address assignment with the Primary Setup Tool..................................................................31
4 Configuration using Web Based Management and Command Line Interface ......................................... 33
4.1 General information on Web Based Management and Command Line Interface..................34
4.1.1 Introduction .............................................................................................................................34
4.1.2 The LED simulation of Web Based Management (WBM) ......................................................36
4.1.3 Working with Web Based Management..................................................................................38
4.1.4 Command Line Interface (CLI) ...............................................................................................38
4.2 The System menu...................................................................................................................41
4.2.1 System Configuration..............................................................................................................41
4.2.2 System Identification & Maintenance (I&M)............................................................................42
4.2.3 System Restart & Defaults......................................................................................................43
4.2.4 System Save & Load via HTTP ..............................................................................................46
4.2.5 System Save & Load via TFTP...............................................................................................48
4.2.6 System Version Numbers .......................................................................................................51
4.2.7 System Passwords & Login Mode ..........................................................................................52
4.2.8 System Select/Set Button .......................................................................................................54
4.2.9 System Event Log Table.........................................................................................................55
4.2.10 C-PLUG Information ...............................................................................................................57
4.2.11 Geographic coordinates..........................................................................................................59
4.3 The X-300/X-400 menu...........................................................................................................61
4.3.1 X-300/X-400 Status page .......................................................................................................61

Table of contents
SCALANCE X-300 / X-400
6Configuration Manual, 10/2014, C79000-G8976-C187-22
4.3.2 Ring Redundancy .................................................................................................................. 65
4.3.2.1 X-400 ring redundancy information (SCALANCE X414-3E).................................................. 65
4.3.2.2 X-300/X-400 Ring Configuration............................................................................................ 69
4.3.2.3 X-300/X-400 observer............................................................................................................ 73
4.3.2.4 X-300/X-400 Standby Mask ................................................................................................... 75
4.3.2.5 X-300/X-400 Standby Observer............................................................................................. 78
4.3.3 X-300/X-400 Fault Mask ........................................................................................................ 81
4.3.4 X-300/X-400 Counters ........................................................................................................... 83
4.4 The Agent menu..................................................................................................................... 85
4.4.1 Agent Configuration ............................................................................................................... 85
4.4.2 Ping ........................................................................................................................................ 93
4.4.3 SNMP..................................................................................................................................... 94
4.4.3.1 Agent SNMP Configuration.................................................................................................... 94
4.4.3.2 SNMPv1 Trap Configuration .................................................................................................. 96
4.4.3.3 SNMPv3 Group Configuration ............................................................................................... 98
4.4.3.4 SNMPv3 Users Configuration .............................................................................................. 101
4.4.4 Agent Timeout Configuration ............................................................................................... 105
4.4.5 Agent Event Configuration ................................................................................................... 106
4.4.6 Agent Digital Input Configuration (SCALANCE X414-3E) ................................................... 110
4.4.7 Agent E-Mail Configuration .................................................................................................. 112
4.4.8 Agent Syslog Configuration ................................................................................................. 114
4.4.9 Agent DHCP Configuration .................................................................................................. 115
4.4.10 Time Config.......................................................................................................................... 116
4.4.10.1 Agent Time Configuration .................................................................................................... 116
4.4.10.2 SNTP Client Configuration................................................................................................... 119
4.4.10.3 NTP Client Configuration ..................................................................................................... 121
4.4.10.4 Daylight Saving Time ........................................................................................................... 123
4.4.11 Agent PNIO Configuration ................................................................................................... 126
4.4.12 Management Access Control List ........................................................................................ 127
4.5 The Switch menu ................................................................................................................. 132
4.5.1 Switch Configuration ............................................................................................................ 133
4.5.2 Port status ............................................................................................................................ 138
4.5.3 Port Mirroring ....................................................................................................................... 144
4.5.4 Link aggregation................................................................................................................... 146
4.5.4.1 Link Aggregation .................................................................................................................. 146
4.5.4.2 LACP Configuration ............................................................................................................. 151
4.5.5 IEEE 802.1x ......................................................................................................................... 152
4.5.5.1 802.1x RADIUS Configuration ............................................................................................. 152
4.5.5.2 802.1x port parameters........................................................................................................ 154
4.5.5.3 802.1x Port Configuration .................................................................................................... 156
4.5.6 Unicast Filter (ACL).............................................................................................................. 159
4.5.6.1 Current Unicast Filter (Access Control List)......................................................................... 159
4.5.6.2 Access Control List Learning ............................................................................................... 164
4.5.6.3 Access Control Port Configuration....................................................................................... 166
4.5.6.4 Unknown Unicast Blocking Mask......................................................................................... 167
4.5.7 Multicast group..................................................................................................................... 168
4.5.7.1 Current Multicast Groups ..................................................................................................... 168
4.5.7.2 GMRP Configuration............................................................................................................ 173
4.5.7.3 IGMP Configuration ............................................................................................................. 174
4.5.7.4 Unknown Unicast Blocking Mask......................................................................................... 175
4.5.8 Broadcast Blocking Mask..................................................................................................... 176

Table of contents
SCALANCE X-300 / X-400
Configuration Manual, 10/2014, C79000-G8976-C187-22 7
4.5.9 Fast learning .........................................................................................................................177
4.5.10 Load Limits Configuration (SCALANCE X414-3E) ...............................................................178
4.5.11 Load Limits Rates (SCALANCE X-300/X408-2)...................................................................180
4.5.12 VLAN.....................................................................................................................................183
4.5.12.1 Current VLAN Configuration .................................................................................................183
4.5.12.2 VLAN Port Parameters .........................................................................................................189
4.5.12.3 GVRP Configuration .............................................................................................................192
4.5.12.4 VLAN Learning......................................................................................................................193
4.5.12.5 X-300 VLAN Port Priority Mapping .......................................................................................194
4.5.13 STP/RSTP ............................................................................................................................196
4.5.13.1 Spanning Tree Configuration................................................................................................196
4.5.13.2 Spanning Tree Port Parameters ...........................................................................................199
4.5.13.3 Spanning Tree Port Configuration ........................................................................................202
4.5.14 MSTP (SCALANCE X-300/X408) .........................................................................................205
4.5.14.1 Multiple Spanning Tree Configuration ..................................................................................205
4.5.14.2 CIST Port Parameters...........................................................................................................209
4.5.14.3 MSTP Instances Configuration .............................................................................................214
4.5.14.4 Multiple Spanning Tree Port Configuration...........................................................................216
4.5.15 QoS .......................................................................................................................................220
4.5.15.1 QoS Configuration ................................................................................................................220
4.5.15.2 CoS to Queue Mapping ........................................................................................................222
4.5.15.3 DSCP to Queue Mapping .....................................................................................................223
4.5.16 LLDP Configuration...............................................................................................................224
4.5.17 Fiber Monitoring Protocol......................................................................................................226
4.5.18 DCP Configuration ................................................................................................................230
4.5.19 DHCP Relay Agent ...............................................................................................................231
4.5.19.1 DHCP Relay Agent Configuration.........................................................................................231
4.5.19.2 DHCP Relay Agent Port Configuration .................................................................................233
4.5.20 Precision Time Protocol (PTP) complying with IEEE 1588 ..................................................236
4.5.21 Configuration of the Precision Time Protocol with the WBM ................................................242
4.5.22 Configuration of the Precision Time Protocol with the CLI ...................................................245
4.5.23 Port Diagnostics....................................................................................................................247
4.5.23.1 Cable tester (SCALANCE X-300/X408-2) ............................................................................247
4.5.23.2 POF ports..............................................................................................................................248
4.5.23.3 POF Diagnostics ...................................................................................................................250
4.5.23.4 FM Diagnostics .....................................................................................................................252
4.5.23.5 SFP diagnostics....................................................................................................................254
4.5.24 Loop Detection......................................................................................................................256
4.5.25 NAT - Network Address Translation .....................................................................................263
4.5.26 Statistics................................................................................................................................267
4.5.26.1 Packet Size Statistic .............................................................................................................269
4.5.26.2 Packet Type Statistic ............................................................................................................272
4.5.26.3 Error Statistic ........................................................................................................................274
4.6 The PoE menu item ..............................................................................................................277
4.7 The Router menu (SCALANCE X414-3E)............................................................................280
4.7.1 Router Configuration.............................................................................................................
280
4.7.2 Router Subnets .....................................................................................................................282
4.7.3 Current Routes......................................................................................................................284
4.7.4 RIPv2 Configuration..............................................................................................................288
4.7.5 RIPv2 Interfaces ...................................................................................................................289
4.7.6 OSPFv2 Configuration..........................................................................................................294

Table of contents
SCALANCE X-300 / X-400
8Configuration Manual, 10/2014, C79000-G8976-C187-22
4.7.7 OSPFv2 Areas ..................................................................................................................... 296
4.7.8 OSPFv2 Area Ranges ......................................................................................................... 299
4.7.9 OSPFv2 Interfaces............................................................................................................... 301
4.7.10 OSPFv2 Virtual Links........................................................................................................... 306
4.7.11 OSPFv2 Neighbors .............................................................................................................. 309
4.7.12 OSPFv2 State Database...................................................................................................... 311
4.7.13 VRRP ................................................................................................................................... 312
4.7.14 VRRP Virtual Routers .......................................................................................................... 312
4.7.15 VRRP Associated IP Addresses.......................................................................................... 316
4.7.16 VRRP Statistics.................................................................................................................... 318
5 Configuration and diagnostics over SNMP ...........................................................................................321
6 PROFINET IO functionality ..................................................................................................................325
6.1 Configuring with PROFINET IO ........................................................................................... 325
6.2 Settings in HW Config.......................................................................................................... 332
6.3 Access options over PROFINET IO..................................................................................... 337
6.4 Data record 0x802A (PDPortDataReal)............................................................................... 346
6.5 MRP configuration ............................................................................................................... 351
7 C-PLUG...............................................................................................................................................355
8 Firmware update..................................................................................................................................357
8.1 Firmware update with functional firmware ........................................................................... 357
8.1.1 Firmware update over HTTP/HTTPS................................................................................... 357
8.1.2 Firmware update over TFTP ................................................................................................ 357
8.1.3 Firmware updates over FTP ................................................................................................ 357
8.2 Firmware update using the boot software with an IE Switch X-400/XR-300 ....................... 358
8.2.1 Firmware update over the serial port ................................................................................... 359
8.2.2 Firmware update over an Ethernet port and FTP ................................................................ 362
A Appendix A ..........................................................................................................................................363
A.1 PC attachment at the serial interface of a SCALANCE X400.............................................. 363
A.2 PC attachment at the serial interface of a SCALANCE X300.............................................. 365
B Appendix B ..........................................................................................................................................367
B.1 MIB variables of a SCALANCE X300/X400......................................................................... 367
C Appendix C ..........................................................................................................................................375
C.1 Tagging frames .................................................................................................................... 375
D Appendix D ..........................................................................................................................................377
D.1 Error messages of the SCALANCE X300 / X400 ................................................................ 377
E Appendix E ..........................................................................................................................................383
E.1 Using the same configuration on multiple IE switches......................................................... 383
Index ...................................................................................................................................................401

SCALANCE X-300 / X-400
Configuration Manual, 10/2014, C79000-G8976-C187-22 9
Introduction
1
1.1
Technical documentation for SCALANCE X-300/X-400
Content of the Configuration Manual
This manual describes the configuration of IE switches.
You will need to configure IE switches if you want to use functions such as SNMP, Rapid
Spanning Tree, VLAN, routing (SCALANCE X414-3E) or E-mail. The manual also covers the
question of firmware updates and the C-PLUG.
Before configuration, the device must be installed and connected up. You will find a
description of the necessary steps for this in the Operating Instructions.
The following table shows you which information you will find in which chapter.
Topic
Chapter
You would like an overview of the documentation of an
IE switch.
Chapter 1
You would like to know which functions and configuration options are available
with an IE switch.
Chapter 2
You would like to know how an IP address is structured and which options you
have for assigning an IP address to an IE switch.
Chapter 3
You would like to configure an IE switch and require information on the relevant
CLI commands or want to know which pages of Web Based Management you
need to edit.
Chapter 4
You want to know how to manage an IE switch with SNMP.
Chapter 5
You want to know how you can use the options of PROFINET IO for a connected
IE switch.
Chapter 6
You would like to know about the options available with the configuration plug C-
PLUG.
Chapter 7
You want to update the firmware.
Chapter 8
Content of the Operating Instructions
The "Operating Instructions Industrial Ethernet Switches SCALANCE X-400" and the
"Operating Instructions Industrial Ethernet Switches SCALANCE X-300" contain not only
basic information on the topic of switches but also product descriptions of IE switches, media
modules and extender modules. The instructions also describe commissioning of IE switches
(installation, wiring, using modules etc.).

Introduction
1.1 Technical documentation for SCALANCE X-300/X-400
SCALANCE X-300 / X-400
10 Configuration Manual, 10/2014, C79000-G8976-C187-22
Overview of the technical documentation of the IE Switches X-300 and X-400
The technical documentation of the X-300 product line is divided into hardware and software
and can be found in the following documents:
●
PH
- Configuration Manual (PDF)
The software is described in the configuration manual (PH) for both product lines X-300
and X-400.
●
BAK
- Compact operating instructions on paper
The hardware of each product group is described in the Compact operating instructions
(BAK).
●
BA
- Operating Instructions (PDF)
The hardware for all product groups and general information can be found in the
Operating Instructions (BA).
Contents
Product group
Type of document
Document identification num-
ber
Software de-
scription
All devices of the X-300 and X-400 prod-
uct lines
PH X-300/X-400
C79000-G89000-C187
Hardware de-
scription
All devices of the X-300 product line
BA X-300
A5E01113043
X-300
BAK X-300
A5E00982643
X-300M
BAK X-300M
A5E02630801
XR-300M
BAK XR-300M
A5E02661171
X-300 EEC
BAK X-300 EEC
A5E02630809
XR-300M EEC
BAK XR-300M EEC
A5E02661176
X-300 PoE
BAK X-300 PoE
A5E02630809
XR-300M PoE
BAK XR-300M PoE
A5E02630810
MM900 (media modules)
BAK MM900
A5E02661178
SFP (transceivers)
BAK SFP
Notices leaflet
A5E02630804
A5E02648904
All devices of the X-400 product line
BA X-400
C79000-G8976-C186
X-400
BAK X-400
A5E01020054
X-400EM (extender module)
BAK X-400EM
A5E00367421
X-400 media modules
BAK X-400 media modules
A5E00367420

SCALANCE X-300 / X-400
Configuration Manual, 10/2014, C79000-G8976-C187-22 11
Network management for industrial networks
2
2.1
Configuration options with a SCALANCE X-300/X-400
Ethernet port
The IE switches can be configured over the switch ports (in-band ports) if an IP address has
already been assigned (see section "Assignment of an IP address").
Over the Ethernet interface, you can use the following protocols or services:
●Web Based Management (HTTP- and HTTPS-based)
●TELNET
●SSH
●SNMP
●Traps
●FTP
●TFTP
●E-mail
●Syslog
Note
With the SCALANCE
X414-3E, there is also a Fast Ethernet interface available (out-
band
port) on the CPU module.
RS-232 interface
The IE switches X-400/XR-300 have an RS-232 interface. You can connect a PC or PG to
this port with a null modem cable and a terminal program (for example HyperTerminal in
Windows, See also Appendix A). You use this port for the manual assignment of an IP
address for the out-band port (SCALANCE X414-3E only) or the in-band port (refer to the
Section "Assignment of an IP address over the serial port"). The entire set of CLI commands
is also available.
Note
Access to the IE switch management over the serial port or the Ethernet port of the CPU
module is also possible when the network is disrupted (out
-of-band management).

Network management for industrial networks
2.2 Functionality and properties of a SCALANCE X-300/X-400
SCALANCE X-300 / X-400
12 Configuration Manual, 10/2014, C79000-G8976-C187-22
2.2
Functionality and properties of a SCALANCE X-300/X-400
Integration of existing subnets with 10 Mbps and 100 Mbps
An IE switch automatically detects the following at its twisted pair ports:
●Send and receive wire pairs (autocrossover)
●Data rate (10 Mbps or 100 Mbps)
●Mode (full or half duplex)
This allows you to integrate subnets easily with IE switches over twisted pair.
Note
Even when using strai
ght cables, an illegal loop can occur in the Ethernet network, for
example by connecting two ports to an IE
switch. Such a loop can lead to network overload
and network failures.
Note
If an IE switch is connected to a partner device that does not opera
te in autonegotiation
mode, the port must be set permanently to the parameters of the partner.
If both ends of the connection are not set manually, the duplex mode will not be detected.
The half duplex mode is used and results in poorer performance and col
lisions.
Gigabit Ethernet ports
These ports are particularly suitable for a high-performance connection between switches
and have the following properties:
●Automatic detection of the send and receive cable pairs (autocrossover)
●Data rates 10 Mbps, 100 Mbps, or 1000 Mbps
●Full duplex
Note
For data transmission at 1 Gbps, at least a Cat 5e twisted
-pair cable with 4 x 2 wires is
necessary. With a four
-wire cable (2 x 2 wires), a maximum data transmission rate of 100
Mbps is possible.

Network management for industrial networks
2.2 Functionality and properties of a SCALANCE X-300/X-400
SCALANCE X-300 / X-400
Configuration Manual, 10/2014, C79000-G8976-C187-22 13
Fast redundancy in the ring
As of firmware version V3.0.0, the IE switches can handle the following redundancy
procedures:
●MRP in the ring with a maximum reconfiguration time of 200 ms
●HRP with a maximum reconfiguration time of 300 ms
Redundant coupling of network segments
Rings or linear bus structures made up of IE switches (SCALANCE X-200 or X-300/X-400 or
OSM/ESM) can be linked redundantly with suitable cabling and appropriate configuration.
(See also section "X-400 Standby Mask menu item".)
The maximum failover time is 300 ms.
For more detailed information on redundant coupling of network segments and media
redundancy in ring topologies, refer to the operating instructions "Industrial Ethernet
Switches SCALANCE X-400" or "Industrial Ethernet Switches SCALANCE X-300".
Store and Forward
An IE switch calculates the CRC sum of incoming data packets and only forwards data with
a valid checksum (store and forward). Bad packets are not forwarded by the switch. Store
and forward also allows operation in a network on different links with different transmission
rates.
Support of virtual networks (VLAN port-based)
There is no physical difference between a virtual network (VLAN) and a normal LAN. The
particular feature of a VLAN is that devices can be assigned to a device group during
configuration. Several of these device groups use a network infrastructure that exists only
once physically. Several "virtual networks" result on the one physical network. Data
exchange and even the transmission of broadcasts takes place only within a VLAN.
The assignment to VLANs is achieved by expanding the frames. Four bytes of additional
information are inserted after the destination and source address. For more detailed
information on frame tagging, refer to Appendix C.
To be able to integrate end devices and subnets that do not support VLAN in virtual
networks, switches can also handle the addition and removal of the VLAN additional
information (VLAN tags). IE switches support assignment based on the port over which the
devices are connected (port-based VLAN).
●X-400
Up to 62 port-based VLANs and the two predefined VLANs can be configured. VLANs
correspond to the IEEE 802.1Q standard.
●X-300
Up to 253 port-based VLANs and the two predefined VLANs can be configured. VLANs
correspond to the IEEE 802.1Q standard.

Network management for industrial networks
2.2 Functionality and properties of a SCALANCE X-300/X-400
SCALANCE X-300 / X-400
14 Configuration Manual, 10/2014, C79000-G8976-C187-22
Spanning Tree
The spanning tree algorithm (STP) allows network structures to be created in which there
are several connections between two stations. Spanning Tree permits exactly one path and
disables the other (redundant) ports for data traffic. This prevents loops forming in the
network. If there is an interruption, an alternative path is found via which the data is sent.
Spanning Tree is defined in the IEEE 802.1D-1998 standard.
Rapid Spanning Tree
The Rapid Spanning Tree Protocol (RSTP) is an expansion of the Spanning Tree Protocol
(STP). RSTP differs from STP essentially in that the devices are already collecting
information about alternative routes during normal operation and do not need to gather this
information after a disruption has occurred. This means that the reconfiguration time for an
RSTP controlled network can be reduced to a few seconds.
IE switches support both Rapid Spanning Tree and Spanning Tree.
Rapid Spanning Tree is defined in the IEEE 802.1D-2004 standard.
Multiple Spanning Tree
The Multiple Spanning Tree Protocol (MSTP) is a further development of the Rapid
Spanning Tree Protocol. Among other things, MSTP provides the option of operating
separate RSTP instances within different VLANs or VLAN groups. This, for example, makes
paths available within individual VLANs that the simple Rapid Spanning Tree Protocol would
block globally for data traffic.
Multiple Spanning Tree is defined in the IEEE 802.1Q standard.
C-PLUG
The C-PLUG is an exchangeable storage medium on which all configuration information of
an IE switch is stored. When you replace an IE switch, you simply need to insert the C-PLUG
of the previous device in the new device. The new IE switch then starts up with the
configuration of the previous device.
MAC address table
The MAC address table of an IE switch contains information about the port or ports to which
a received frame should be forwarded. This table can contain both static entries (inserted by
the user) as well as dynamic entries (learned based on the frames received by the IE
switch).

Network management for industrial networks
2.2 Functionality and properties of a SCALANCE X-300/X-400
SCALANCE X-300 / X-400
Configuration Manual, 10/2014, C79000-G8976-C187-22 15
Access Control
Note
In the firmware versions prior to 2.2.0, this property is called "Locked Ports".
If this function is activated for a port, an IE switch only forwards frames received at this port if
their source address exists in the address table.
It is possible to have all connected nodes entered in the access control list automatically.
Note
The ri
ng ports cannot be configured with access control enabled .
Network access protection complying with the standard IEEE 802.1x
Ports can be configured for end devices that support authentication according to IEEE
802.1x. The authentication is made via a RADIUS server that must be reachable over the
network.
Mirroring
Mirroring allows the data traffic of a port to be mirrored at another port. The data traffic can
then be analyzed at this monitor port without any effects on operation.
E-mail function
An IE switch can be configured so that it sends an E-mail when certain events occur.
Event log table
The event log table logs events that occur during operation with an IE switch. The user can
specify which events cause an entry in the table.
Time-of-day synchronization
IE switches allow the system time to be synchronized with external time transmitters. To use
this functionality, there must, for example, be a SICLOCK time transmitter or an SNTP server
whose frames the IE switch evaluates. Entries in the event log table then have a time stamp
that is uniform throughout the system. This allows events to be sorted according to the time
of their occurrence throughout the system speeding up the identification of the causes of
problems.
Flow control
IE switches support flow control in half and full duplex mode.

Network management for industrial networks
2.2 Functionality and properties of a SCALANCE X-300/X-400
SCALANCE X-300 / X-400
16 Configuration Manual, 10/2014, C79000-G8976-C187-22
BOOTP/DHCP
IE switches can obtain their IP addresses dynamically from a BOOTP or DHCP server.
As of firmware version 2.0, the DHCP mode can be selected if DHCP is enabled. In the
previous firmware versions, DHCP is operated over the MAC address.
Note
If routing functions (SCALANCE X414
-3E only) are enabled, DHCP and BOOTP are not in
e
ffect.
Note
DHCP and BOOTP only influence the in
-band agent IP configuration; the out-band agent IP
configuration of the SCALANCE X414
-3E can only be set manually.
PROFINET IO
As of firmware version 2.0, operation of the switch as a PROFINET IO device is supported.
TELNET
The command line interface of an IE switch can be controlled with TELNET over a LAN or
the Internet.
Note
A maximum of three simultaneous CLI connections (serial (only with an IE
Switch X-400)
and LAN) are possible.
SSH
The command line interface of an IE switch can be controlled with SSH over a LAN or the
Internet.
Note
A maximum of three simultaneous CLI connections (serial (only with an IE
Switch X-400)
and LAN) are possible.

Network management for industrial networks
2.2 Functionality and properties of a SCALANCE X-300/X-400
SCALANCE X-300 / X-400
Configuration Manual, 10/2014, C79000-G8976-C187-22 17
SNMPv3
IE switches support SNMPv1, SNMPv2c, and SNMPv3. Among other things, SNMPv3
provides user management at protocol level as well as security functions (for example
authentication). The configuration of users and groups for SNMPv3 is possible using Web
Based Management, the Command Line Interface or by direct access to the MIB objects
(only recommended for experts).
Syslog
Syslog according to RFC 3164 is used for transferring short, unencrypted text messages
over UDP in the IP network. This requires a standard Syslog server.
DHCP Option 82
The DHCP relay function allows the IP address initialization of an end device depending on
the connected switch port. DHCP Option 82 is supported with this function.
IGMP Snooping and IGMP Querier
IE switches support not only IGMP snooping but also the IGMP querier function. If IGMP
Snooping is enabled, IGMP packets are evaluated and the multicast filter table is updated
with this information. If IGMP Query is also enabled, IE switches also send IGMP queries
that trigger responses from IGMP-compliant nodes.
Only for SCALANCE X414-3E: Layer 3 functionality (routing)
You can also configure the SCALANCE X414-3E as a router. This allows various IP subnets
to be interconnected. You can enter static routes and/or enable RIP/OSPF and VRRP router
protocols. Using these standardized protocols, SCALANCE X414-3E can synchronize the
configuration with other routers in the network.

Network management for industrial networks
2.3 Options of media redundancy
SCALANCE X-300 / X-400
18 Configuration Manual, 10/2014, C79000-G8976-C187-22
2.3
Options of media redundancy
There are various options available to increase the network availability of an Industrial
Ethernet network with optical or electrical linear bus topologies:
●Mesh networks
●Parallel connection of transmission paths
●Closing a linear bus topology to form a ring topology
2.3.1
Media redundancy in ring topologies
Structure of a ring topology
Nodes in a ring topology can be external switches and/or the integrated switches of
communications modules.
To set up a ring topology with media redundancy, you bring together the two free ends of a
linear bus topology in one device. Closing the linear bus topology to form a ring is achieved
with two ports (ring ports) of a device in the ring. This device is the redundancy manager. All
other devices in the ring are redundancy clients.
Figure 2-1 Devices in a ring topology with media redundancy
The two ring ports of a device are the ports that establish the connection to its two
neighboring devices in the ring topology. The ring ports are selected and set in the
configuration of the relevant device. In STEP 7 and on the S7 Ethernet CP modules
themselves, the ring ports are indicated by an "R" after the port number.
Note
Before physically closing the ring, download the configuration of your STEP
7 project to the
individual devices.

Network management for industrial networks
2.3 Options of media redundancy
SCALANCE X-300 / X-400
Configuration Manual, 10/2014, C79000-G8976-C187-22 19
How media redundancy works in a ring topology
When using media redundancy, the data paths between the individual devices are
reconfigured if the ring is interrupted at one point. Following reconfiguration of the topology,
the devices can once again be reached in the resulting new topology.
In the redundancy manager, the 2 ring ports are disconnected from each other if the network
is uninterrupted. This prevents circulating data frames. In terms of data transmission, the ring
topology is a linear bus topology. The redundancy manager monitors the ring topology. It
does this by sending test frames both from ring port 1 and ring port 2. The test frames run
round the ring in both directions until they arrive at the other ring port of the redundancy
manager.
An interruption of the ring can be caused by loss of the connection between two devices or
by failure of a device in the ring.
If the test frames of the redundancy manager no longer arrive at the other ring port because
of an interruption in the ring, the redundancy manager connects its two ring ports. This
substitute path once again restores a functioning connection between all remaining devices
in the form of a linear bus topology.
As soon as the interruption is eliminated, the original transmission paths are established
again, the two ring ports of the redundancy manager are disconnected and the redundancy
clients informed of the change. The redundancy clients then use the new paths to the other
devices.
The time between the ring interruption and restoration of a functional linear topology is
known as the reconfiguration time.
If the redundancy manager fails, the ring becomes a functional linear bus.
Media redundancy methods
The following media redundancy methods are supported by SIMATIC NET products:
●HRP (High Speed Redundancy Protocol)
Reconfiguration time: 0.3 seconds
●MRP (Media Redundancy Protocol)
Reconfiguration time: 0.2 seconds
The mechanisms of these methods are similar. HRP and MRP cannot be used in the ring at
the same time.

Network management for industrial networks
2.3 Options of media redundancy
SCALANCE X-300 / X-400
20 Configuration Manual, 10/2014, C79000-G8976-C187-22
2.3.2
MRP
The "MRP" method conforms to the Media Redundancy Protocol (MRP) specified in the
following standard:
IEC 62439-2 Edition 1.0 (2010-02) Industrial communication networks - High availability
automation networks Part 2: Media Redundancy Protocol (MRP)
The reconfiguration time after an interruption of the ring is a maximum of 0.2 seconds.
Requirements
Requirements for problem-free operation with the MRP media redundancy protocol are as
follows:
●MRP is supported in ring topologies with up to 50 devices.
Except in PROFINET IO systems, topologies with up to 100 SCALANCE X-200 and
SCALANCE X-300 IE switches were tested successfully.
Exceeding this number of devices can lead to a loss of data traffic.
●The ring in which you want to use MRP may only consist of devices that support this
function.
These include, for example, some of the Industrial Ethernet SCALANCE X switches,
some of the communications processors (CPs) for SIMATIC S7 and PG/PC or non-
Siemens devices that support this function.
●All devices must be interconnected via their ring ports.
Multimode connections up to 3 km and single mode connections up to 26 km between
two SCALANCE X IE switches are possible. At greater distances, the specified
reconfiguration time may be longer.
●"MRP" must be activated on all devices in the ring (see section "X-300/X-400 Ring
Configuration (Page 69)").
●The connection settings (transmission medium / duplex) must be set to full duplex and at
least 100 Mbps for all ring ports. Otherwise there may be a loss of data traffic.
–STEP 7: Set all the ports involved in the ring to "Automatic settings" in the "Options"
tab of the properties dialog.
–WBM: If you configure with Web Based Management, the ring ports are set
automatically to autonegotiation.