Course Outline
The first three chapters of the course explain the physical IP network, allowing you to understand and trace all of the pieces of an IP circuit from end to end. We'll begin by demystifying the "cloud" and understand how services are implemented. In Chapter 2, you'll understand the story on the ground: POPs, MANs and the different ways that the last mile of a connection to a customer can be implemented, and how carriers interconnect. Chapter 3 provides a concise review of existing technologies that are still used to implement physical connections for IP services.
1. The “Cloud”,
Service Provisioning and Network Equipment
1. Anatomy of a Circuit
2. Carriers' Transmission Networks
3. … How Circuits are Actually
Implemented by Carriers
4. Network Equipment: How and Where Each
Is Used
5. … Routers vs. muxes. vs. switches
6. Summary: How Circuits are Provisioned
2. Carrier
Networks and Connections; The Last Mile
1. Mature Competitive Carrier Network
2. POPs and MANs
3. Competitive Carrier –The Last Mile
4. Switched Access
5. Subcontract Dedicated Access to ILEC
6. Collocation: Acting as a CLEC
7. Bypass: Fiber to the Customer
3. Channelized
TDM, Digital Hierarchy, T1 and SONET
1. The Digital Hierarchy: DS0-DS3
2. Carrier Systems Overview: T1, T3,
SONET, ISDN
3. Channelized Time Division
Multiplexing
4. TDM Example: T1 Carrier System
5. Fiber Optics and Fiber Cables
6. SONET and DWDM
7. International Digital Hierarchies
The next part is all about IP-based services, both on the buy side and sell side, wholesale and end-user. You'll understand the key difference between Internet service for an end-user vs. business-quality service for an end-user - and the critical concepts of service level agreement, traffic profile and transmission characteristics. We'll sort out transit vs. peering, how carriers buy and sell at the wholesale level, ISPs, plus VPNs.
4. IP Network
Services
1. Categories of Service Providers
- Facilities-Based Carriers
- Resellers
- Application Service Providers
2. Network Services
- “Internet” Service: Broadband IP Dial Tone
- Service-Level Agreements and Quality of Service
3. IP Interconnect
4. Interconnect for Business Customer
Services vs. Internet
5. Transit vs. Peering
6. Internet Service Providers (ISPs)
7. VPNs
- Customer-Premise-Based IPsec
- Network-based IPsec with QoS: “Carrier” VPNs
With an understanding of IP services at a "business" level under our belts, we'll turn to understanding IP and MPLS network technologies, filling gaps and eliminating frustration by building a solid knowledge base. First are two essential fundamentals: packets and frames, IP addresses vs. MAC addresses. Then, we'll cover all of the essential functions in a structured way, with a true understanding of the OSI layers, what each layer does and typical protocols at each layer. At the end of this, you'll understand what someone means when they say "Layer 2" vs. Layer 3 and how Ethernet relates to IP.
5. Datacom and
Networking Basics
1. Data Circuits
2. Local Area Networks (LANs)
3. Wide Area Networks: Routers
4. Formatting Data for Communication:
Essential Functions
5. Frames
6. Packets
7. Packets and IP Addresses vs. Frames
and MAC Addresses
8. IP Packets
6. OSI Layers and
Protocol Stacks
1. Protocols and Standards
2. Open Systems vs. Proprietary
Solutions
3. Protocol Stacks: The ISO OSI 7-Layer
Reference Model
4. Understanding the Layers
5. Understanding How a Protocol Stack
Works
6. Key Standards Organizations
At this point, we'll know that a network is Layers 1, 2 and 3 of the OSI model. The next part of the course covers the three layers, filling gaps and explaining key technologies for each. Chapter 7 covers fiber and broadband over copper for access. Chapter 8 covers Ethernet and the essential idea of VLANs and how they are used for Optical Ethernet and "bridged" services. Chapter 9 covers packet network services from carriers and the critical idea of virtual circuits - leading up to understanding MPLS as today's implementation of virtual circuits.
7. Layer 1: Physical
Connections
1. Fiber Optics
2. Fiber Access Networks (FTTN, FTTP,
PON, EPON and GPON)
3. DSL and VDSL
4. Cable TV Systems
5. LAN Cables – Categories of Twisted
Pair
8. Layer 2: Ethernet
1. Ethernet Basics
2. Gigabit Ethernet on Copper
3. Layer 2 Switches and Broadcast
Domains
4. VLANs
5. Optical Ethernet
9. Layer 3: Packet
Network Services
1. Bandwidth on Demand Service Concepts
2. Virtual Circuits
3. X.25 and Jargon
4. Frame Relay
5. TCP/IP over Frame Relay to implement
a WAN
6. QoS Requirements for Voice over IP
7. ATM
8. MPLS
9. TCP/IP over MPLS
The last "network" chapter is all about Quality of Service on a packet network - the idea of buying and selling IP packet communication services backed up by a contract called a Service Level Agreement, guaranteeing transmission characteristics like packet delivery ratio and maximum delay. This is sometimes called Differentiated Services (Diff-Serv in Cisco-speak), and is the exact opposite of "net neutrality". It is implementing prioritization of one type of traffic over another... and it turns out that MPLS is a key mechanism for QoS. You'll end up understanding how MPLS is a traffic management overlay on IP to be able to sell service contracts.
10. QoS
1. Diff-Serv and QoS
2. Implementing Differentiated Services
with MPLS
3. Service Level Agreements and Traffic
Profiles
4. Traffic Policing and Shaping
5. Queues and How Prioritization is
Implemented
6. The "MPLS Service" Quiz
In Chapter 4, we covered VPNs for "data" services. The final chapter in the course is a concise overview of VoIP to round out your knowledge. Without bogging down on vendor specifics, you'll understand the main components and functions of a VoIP system and the SIP protocol.
11. VoIP
Components, Jargon and Buzzwords
1. The Big Picture
2. VoIP Components, Jargon and Buzzwords
3. Internet Telephony
4. Softswitches and VoIP PBXs
5. IP Centrex vs. Hosted PBX
6. SIP and the SIP Trapezoid
7. Tracing Call Flow Step-by-Step
8. SIP Trunking vs. PRI
If you've read this far, you know by now that it's not by accident that the biggest carriers in the US and Canada both ordered this course for their personnel. This is the essential fundamental knowledge set needed to be effective and efficient in today's IP-based telecom world. Taking this course will eliminate frustration at not really understanding the jargon and buzzwords at project meetings and in discussions with vendors. This is the knowledge base on which to build project and product-specific details. You will be able to confidently and intelligently contribute, be more accurate and more productive. Get this course today!
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