Transcript
Moxa’s Webinar
The Internet of Things Meets Big Data – Is Your Network Prepared?
Nick Sandoval Field Application Engineer
Agenda Converged Networks • Internet of Things • Big Data
Trends in Industrial Networks Best Practices
• Edge to Core • Quality of Service • Predictive • Class Based
• Multicast • Network Segmentation with Layer 3
Converged Networks
What is a converged network? Network convergence is the efficient coexistence of multiple data types on a single network Offers convenience and flexibility not possible with separate infrastructures Helps leverage economies of scale
Nick’s House
Hot Topic: Industrial Internet of Things (IIoT)
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Confidential
Confidential
Confidential
Confidential
Big Data
Poll Question Do you currently build your network to account for Internet of Things and/or Big Data? a) b) c) d) e)
Not yet, but considering Only looked at Internet of Things Only looked at Big Data Absolutely No
Trend
Trends in the Industrial Space
Quad-Play Network
Industrial Networking Paradigm Shift Legacy Device Networking • 1-to-N • S-to-E Gateway • Data, Command
Pervasive Industrial Ethernet • N-to-N • Fieldbus-to-Ethernet • Standalone Networks for Data, Control, Video, Voice
Converged Automation Network • N-to-N • Native Eth. IP • OneNET for Data, Control, Video, Voice
SCADA center
Surveillance center
Network management
Control Center/ Information Layer
Turbo Ring Turbo Chain
Ground
Underground Control Layer
Saved
Saved
Saved
Explosionproof cabinet
Control & Monitoring Systems
Personnel Positioning Systems
Wireless Comm. Systems WiFi Mobile phone
Device Layer
Sensor
Card Reader
Explosionproof cabinet
CCTV
Best Practices
A Converged Edge-to-Core Industrial Ethernet Solution
Core
Industrial Core Switch
Industrial Network Management
10G
Rackmount Ethernet Switch istribution
1G Turbo Ring
D
Turbo Chain
DIN-Rail Ethernet Switch
Edge
Media Converter
Industrial
Industrial
Wireless
PoE
Field Networking PLC
Serial to Ethernet
Substation Ethernet Switch
M12 Ethernet Switch
Secure Networking Meter
Meter
Meter
Industrial Fieldbus Gateway
VPN Internet
Tunnel
PLC
Converged Edge-to-Core Industrial Ethernet Solution
Quality of Service
Poll Question Is Quality of Service a metric when you design your network? a) Not really b) Absolutely c) The only metric I use is a ruler
What is Quality of Service? Quality of service (QoS) is the overall performance of a of the network, above all the perceived performance seen by the users.
Determinism a deterministic system is a system in which no randomness is involved in the development of future states of the system. -Wikipedia
Industrial Application Require It Determinism is highly important Many Industrial Protocols like Ethernet/IP require it. Network failure in these environments can be very costly
QoS Parameters Delay Jitter Reliability
QoS Methodologies Predictive Quality • Requires Over-provisioning
Flow-Based Quality • Flow - A stream of packets or frames with the same quality requirements is a flow • IntServ
Class-Based Quality • Packets are clustered into groups • Node based prioritization • DiffServ
Predictive Quality No congestion, all packets get through Requires the use of Over-provisioning
Predictive Quality
Why use a QoS protocol? Network applications communicate thru network Different network applications have different network needs - File transfer need large network bandwidth but not real time - VoIP bandwidth is small but need real time & small Jitter QOS prioritize frames to ensure important applications data get process earlier
Collected Data Control Message Mgt. Message
Low Priority Top Priority High Priority
Low Priority High Priority Top Priority
Data collected
Mgt. Message
Control Message
Class-Based Quality Node level Groups data into groups Pro:
•Highly scalable •Easy to implement
Con
•No standardization •Many different protocols
Multicast
Poll Question Do you use Ethernet/IP, video, or voice in your network? a) b) c) d)
Yes Not yet, but plan on it Only Ethernet/IP No immediate plans
Why Multicast? • Used when sending same data to multiple receivers • Better bandwidth utilization • Less host/router processing
Multicast Advantages • Enhanced efficiency: Controls network traffic and reduces server and CPU loads • Optimized performance: Eliminates traffic redundancy • Distributed applications: Makes multipoint applications possible
IGMP Snooping Concept What is Multicast Filtering? • Ensures certain groups receive multicast traffic • Network devices forward multicast traffic to ports that are registered B
C
D
E
A
Unicast: One to one
F
B
C
D
E
F
A
Multicast: One to several
B
C
D
E
A
Broadcast One to all
F
Multicasting IGMP is the most popular multicast protocol End devices must support multicast protocol
The network infrastructure needs to support IGMP snooping
Network Segmentation with Layer 3
OSI Network Model
Layer 3
Network Layer Routers
Layer 3 Switches
Confidential
Difference Between a Layer 3 Switch and Router Layer 3 Switch
Router
Routing Performance
Extremely Fast
Slower
Port Density
Much Higher
Limited
Network Routing Capability
VLAN Based
Interface Based (Exception is EDR-810)
Virtual Private Network (VPN)
Not capable
Fully capable
Network Address Translation (NAT)
Not capable
Fully capable
Firewall
Not capable
Fully capable
DHCP Server
Limited
More capable
When is Layer 3 Devices Used?
Benefits Improved performance in large networks Increased security Better control of traffic Allow for VLAN routing and network segments
Ideal Scenario Large installations Need for segregation or/and isolation Need for security NAT is needed Interfacing with WAN
Broadcast In the Layer 2 Network Hub/Switch
Computer Computer Computer Computer
Server
Hub/Switch
Computer
Server
Computer
Broadcast Domain Hub/Switch
Hub/Switch
Server
Computer
ComputerComputer
Computer Computer Computer
There are 15 devices If everyone send a broadcast everyone will receive 14 packets
Larger Broadcast Domain
Computer Computer Computer
Computer Computer Computer
Computer Computer Computer
Hub/Switch
Computer Computer Computer
Computer Computer Computer
Computer Computer Computer Hub/Switch
Computer Computer Computer Computer Computer
Server
Computer
Server
Computer
Computer Computer Computer Computer Hub/Switch Computer
Computer
Computer Computer Computer
Computer Computer
If there are 1000 devices Computer Computer Computer
Computer Computer
Computer Computer Computer
Server Computer If everyone send 100 broadcast packets Computer everyone will receive 99900 packets
Computer Computer
Computer Computer Computer Computer Computer Computer
Computer Networking will becomes very busy Computer Computer
Hub/Switch
Divide Broadcast Domain
Broadcast Domain A
Broadcast Domain C Router/Layer 3 Switch
Router/Layer 3 Switch
Broadcast Domain B
Broadcast
Key Takeaways Industrial networks are moving towards Converged networks that require a lot of bandwidth Setting up Quality of Service Scheme in a Network is crucial Multicast is important in environments where there is a lot of consumers of a producer
Layer 3 is important in large networks to improve network performance and security
Thank You
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