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1 Network Monitoring and Diagnostics Connected Manufacturing usa.siemens.com/industry Page 1

2 What is Network Monitoring and Diagnostics? Network Monitoring A system that is constantly monitoring networks and devices on the networks. Looking for network problems and creates reports and trends. Looks at response time, availability and uptime. Network administrator is notified via , SMS or other alarms. Network Diagnostics Protocols analyzers that monitors what is being sent and received. Software for monitoring messages from devices. Hardware relays from devices that trigger when error occurs. Network monitoring systems can display diagnostics. Page 2

3 Why is Network Monitoring and Diagnostics so important? Detect outages and slow or failing systems. Monitor performance and usage of a network. Benefits are increased productivity. Pease of mind, that all is well. Page 3

4 Where do I start? First we need to connect! Types of Industrial Switches and Benefits Unmanaged verses Managed Switches What are the advantages of a managed switch? Once we are connected we can : Introduction to Diagnostic Tools Web pages of device Network protocol analyzers SNMP Protocol and MIB browsers Network Management System Software Page 4

5 Types of Industrial Ethernet Switches Unmanaged Switch: Allows Ethernet devices to connect, usually the device connects automatically. Simply receives frames from one device and passes them on. LED Indicators show connections to ports of the switch. Low cost Industrial quality. Simple Ethernet Bus and Star topologies can be configured. Managed Switch: Basically a smart switch. Added advanced features. Ability to configure and manage network. More expensive then unmanaged switches. Monitor statuses of all devices connected to the switch. Redundancy via ring topology and ring manager. Page 5

6 Detailed Features of a Managed Switch Status LEDs indicate a connection at the switch. Qos (helps to provide determinism) Trunking (2 or more ports are group together to act as one port) VLANs ( Group Devices to isolate networks) Port mirroring Diagnostic feature Fault relaying Diagnostic feature IGMP snooping (Broadcast,Multicast control) Redundancy (Automatic switch over) SNMP Diagnostic feature Future-proofing ( Ready for new devices) WEB base management Diagnostic feature Diagnostic feature Lets discuss the diagnostic features in detail Page 6

7 Let s talk about the managed switches' diagnostics LEDs on the switch Fault Relaying PORT Mirroring The following errors/faults can be signaled by the signaling contact: The loss and the establishment of a link on a monitored port. The failure of one of the two redundant power supplies. The loss of the connection to the controller in PROFINET IO mode. The redundancy manager signals an error An incompatible C-PLUG was inserted. Page 7

8 Diagnostics using SNMP feature built into managed devices on a network What is SNMP Protocol? Simple Network Management Protocol Queries determine health and status of a device via software. Displays data that is easy to understand. Uses files called MIBs Management Information Base. Allows quick detection of network problems or health. Allows the capability to update firmware of the device. Page 8 One of many tools for monitoring MIBs

9 Diagnostics using SNMP what do you get? What are some facts about MIBs? If a component of a network device isn't described in the MIB, it doesn't exist. You need a SNMP network manager to read the MIBs. When an SNMP device sends a Trap or other message, it identifies each data object in the message with a number string called an object identifier, or OID. The MIB file provides a text label or pointer called for each OID The SNMP manager decodes the OID numbers into something in text we can understand and read. Page 9

10 Who uses MIBS and SNMP Protocol? SNMP is used by: Routers Servers Switches Printers Workstations Modems racks Video cameras IP telephones IP Sensors Profinet devices(simatic ET200S) Simatic S7 300/400 CPs Soft PLC Win AC/LC with CP SNMP Managed Network consists of: Managed device. Agent (Software that runs on managed device) Network management system (NMS) - software that runs on the manager. There are many Management Tools available to access MIB information. Just a few devices that support SNMP for diagnostics. Page 10

11 Where do I find MIB files? Go to managed device WEB site for MIBs Go to mibdepot.com Google/ BING the Device name, MIB file. WEB sites for downloading MIB files from venders Page 11

12 MIB Information Flow Managed Switches Page 12

13 Summarize Major Advantages with Managed Switch Managed switch provides monitoring and diagnostics. Many tools are available to access information from a network. Less downtime due to diagnostics. More productivity due to uptime. Future proof for new devices. Let s now look at some other tools we can use to diagnose networks: Network Protocol analyzer Web base management: Page 13

14 Tools for Monitoring Protocols on a Network Monitors what is being sent and received on the network You select which Protocol you want to observe. Check packets that are sent and received Page 14

15 Networks Diagnostic Tools Network Protocol analyzer software WireShark is installed on the computer Managed switch with Port Mirroring on Watch traffic coming from switch IP Camera Server Printer Wireshark information from switch Page 15

16 Diagnostics with WEB Base Management of Device Log in to WBM WBM of camera Camera SNMP setup Page 16

17 Diagnostic Features of WBM LED Status of Switch Location of device can be set and who to call for maintenance Location and Contact Page 17

18 WBM Features for Diagnostics System Save & Load Event logs can be monitored Configurations can be saved Event logs can be saved Firmware updates via WBM Device status Page 18

19 WBM Fault Mask of a managed switch Enabling Monitoring of a Switches Ports, Power and Ring Manager. Enabling PS/ RM monitor Enabling link down monitor Enabling link up monitor Page 19

20 WBM Event Configuration for Diagnostics Event setup setup SNMP setup Page 20

21 WBM Port & Wire Diagnostics Configuration Mode and Status of each port Run test on wire Wire test and Status of each port Page 21

22 Diagnostics and Monitoring using PLC Software Most PLC manufactures have diagnostics built into their software. Network views in online mode. Topology view shows connections at the port level. PLC s can also read MIB files of a device in. Page 22

23 Now we will use Diagnostics in PLC Editor Software Topology tool built into PLC configuration software All devices in network Table view Passive components Page 23

24 PLC Topology View PLC configuration Software PLCs,Managed switches and remote I/O Page 24

25 Topology PLC Editor Online view RED is bad..no connection! Page 25

26 Network Management Software (NMS) We have covered some of the tools/ protocols for diagnostics and monitoring, now let s tie them all together with a Network Management System (NMS) One software package to manage and diagnose all networks. allows you to Monitor all devices and all networks. Easy diagnostics, find problems quickly. Allows you to organize your networks. Enable a online graphic view of everything on the network. NMS uses the SNMP Protocol to get detailed information of a device. Page 26

27 Network Management Software Sinema Server V12 Network Manager JPG export Troubleshooting tools Automatic device detection Simple network visualization Report and export function Gives you an up-to-date and complete documentation of your networks Automatically generated topology view CSV export Page 27

28 Network Management Software Devices Broken connection Troubleshooting Advantages of NMS: Simple presentation of the network Simple structuring of devices in userspecific views User specific views makes it easy to troubleshoot Automatic topology detection and visualization Select view Office or Plant floor? Plant floor picture Page 28

29 Network Management Software Monitoring Current status overview. Errors which occurred in the past are documented in the message list. Evaluation of device availability within reports. Easy to understand status overview Event log keeps you informed anytime 24/7/365 You re alerted to new devices and network errors during plant operation. Page 29

30 Network Management Software Problems Home Screen of NMS to get a quick glance of plant status Events Time Details Address Interface No. of up and down devices NMS host information Graphics of events by types Page 30

31 Network Management Software using SNMP Page 31 Automatic Diagnostics for SNMP devices Accurate device identification Adjustable standard graphical device display Support 3 rd party device specific diagnostic data Adjustable threshold values for alarming

32 Monitoring of user-specific OIDs Define up to 10 additional OID s or Object Identifiers to be monitored per device. Here is example SNMP/ MIB/OIDs for a printer where we are monitoring Ink cartridges. Monitored OID s based on user defined thresholds Define events for monitoring Page 32

33 Basic Data about a device Where device is located and who to call for maintenance Page 33

34 SNMP Alarms and events can be modified Events / Traps can be modified and created Event class can be chosen Page 34

35 To Summarize all that we covered today It is important to monitor and have diagnostics of your network A managed switch provides access, diagnostics, and monitoring of the network. Most managed devices support SNMP protocol to provide detailed information. There are tools like Wireshark, MIB Browser, and Sinema Server available to help troubleshoot your networks. Thank you for your time! Page 35

36 Thank You for Your Attention! Connected Manufacturing Forum Website: om/automation/us/en/connectedmanufacturing/pages/connectedmanufacturing.aspx Answers for industry. Page 36