John Ragan Director of Product Management. Billy Wise Communications Specialist

Transcription

1 John Ragan Director of Product Management Billy Wise Communications Specialist

2 Current Substation Communications Physical Infrastructure Twisted Pair, 4 Wire, COAX, Cat5 & Cat6, 9 Pin Serial Cable, Single-mode & Multimode Fiber, Microwave Communication Protocols RS232/422/485, Sonet, SCADA, Ethernet, DNP3,

3 Traditional Substation Communications Serial Fiber Optic Connection Fiber Optic Leased Line Telecom Circuit Serial Aggregation SCADA Master Serial Port Confidential and Proprietary 3

4 Serial Vs. Ethernet Serial Communications SCADA IED

5 Current Trends Emphasis on Ethernet Communications Expanded use of Fiber Extending Communications to Remote Locations Proliferation of PoE Growing use of Surveillance and Security products

6 Fiber-Optics The Optic components determine: Type and size of Fiber-Optic cable Communication distance Type of connector used SFPs Ports replacing fixed optics Equipment with open SFP sockets Wide range communication speeds and distances More flexibility

7 Power Over Ethernet Device Power delivered over the data cable PoE (15w), PoE+(30w), PoE++(60w), PoE Advantages Eliminates need for separate power Circuits Eliminates the cost of device power supplies Turns power off when device is not connected Can cycle power if device is unresponsive

8 Ethernet Switch Technology Unmanaged Managed Ring Protection PTP Precision Time Protocol OAM Operation, Administration & Management Performance Tuning Fault detection

9 Surveillance Equipment for Every Situation Surveillance & Monitoring COAX Infrastructure PoE Cameras more than 100M away Copper PoE+ Media Converters IP over COAX Fiber Emergency IP Phone Indoor PoE PTZ Camera within 100M COAX PoE+ Switch Composite Video/HDMI Legacy CCTV Camera IP Video Encoder Network Storage Media Player PTZ Control Confidential and Proprietary 9

10 Fiber Technologies Sonet (Synchronous Optical Network) Based on older Time Division Multiplexing T1-T3 Technology Poor bandwidth Efficiency(Protection Path No bandwidth) Limited bandwidth sizes Sub 50ms protection High Deployment cost Active Path Reserved path No activity

11 Fiber Technologies Ethernet Low Cost Deployment Flexible bandwidth rates Sub 50ms protection without stranding bandwidth Mesh and Ring Topologies Easily Scalable Active Path Secondary path Active Path

12 Ethernet Network Design Layer 2 (Facts) 1. Switching determined by MAC address database 2. If Packet Collision occurs, packet randomly retries 3. Packet Broadcast transverses all switches on domain 4. Vlans provide segmentation of domain 5. Vlans also allow for security and network traffic flow management

13 Network Design Layer 2(Hybrid) Example / / /27 C B Layer 3 Router Layer 2 Switch Ethernet Ring Block G D IPs terminated on Router Vlan 10= /27 Vlan 20= /27 Vlan 30= /27 Vlan 40= /27 29 usable IPs per Vlan A Vlan 10 Sub A Vlan 20 Sub B Vlan 30 Sub C Vlan 40 Sub D

14 Ethernet Protection 1. ITU G.8032 provides a method of Ethernet protection while preventing loops. 2. Master node blocks traffic on one interface of Ethernet ring 3. Failover achieved in less than 50ms 4. Many derivatives of this technology that are proprietary (Nodes must be of same Manufacture and same Firmware)

15 Ethernet Network Design Layer 3 (Facts) 1. Network Control by routing IP address 2. No problems controlling Broadcast domains 3. Control Services and bandwidth based on IP subnets 4. Ring and Mesh redundancy available 5. Traffic flooding and storming easy controlled 6. Most Layer 3 devices support layer 2

16 Network Design Layer / /27 Traffic controlled by static or Dynamic routing /27 Layer 2 Ring C MESH Topology B Layer 3 Switch/Router Ethernet Ring Block G D IPs terminated on Router Vlan 10= /30 Vlan 20= /30 Vlan 30= /30 Vlan 40= /30 2 usable IPs per segment A

17 MPLS Multi-Protocol Label Switching MPLS packets transverse fiber node based on shortest path and label MPLS allows transport of ATM, Sonet and Ethernet VPLS (Virtual Private Lan Service) allow for layer 2 type connectivity with layer 3 controls While running MPLS switch processor and QOS are easily controlled per vpls instance Availability of complex traffic engineering

18 MPLS Traffic controlled by Labels VPLS creates layer 2 connectivity Layer 2 Ring C B MPLS Restores Path Layer 3 Switch/Router A Ethernet Ring Block G D Fiber Cut

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