Training Course Outline
Data Networking Courses MPLS Training Courses
MPLS Virtual Private Networks
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Course Duration: 2 Days
Course Code: PDN070
Course Description:
This seminar describes how virtual private networks (VPNs) are supported in modern IP network architectures.
Prerequisites:
A prerequisite for this material is a basic understanding of how IP networks operate, and knowledge of wide area technologies such as leased lines, Frame relay and ATM are a distinct advantage. The seminar does provide an overview of these issues, but it is only intended to highlight the essential issues.
Prerequisite courses:
Understanding IP and Datanetworking
Hands On TCP/IP and Internet Protocols
ICND1: Interconnecting Cisco Network Devices Part 1
Follow on courses:
MPLS Implementing Cisco MPLS
This course includes the following modules:
IP Network Architecture
- Facilities offered by an IP network
- Router based architecture of IP network
- Data links between IP routers: LL/SDH, LAN, ATM, FR
- Standard encapsulations for IP
- Hop by hop, independent operation of routers
- IP addressing
- Subnetworks and broadcast domains
- IEEE 802.1Q VLANs
- Prefix based routeing
- Interior routeing protocols: RIP, OSPF, IS-IS
- Structure of Internet
- Internet Administrations ICANN/IANA/RIPE
- Peering and transit
- Autonomous Systems and AS numbers
- Border Gateway Protocol
- BGP as inter-operator protocol
- Interior and Exterior BGP
- BGP connections
- BGP next hops and OSPF as IGP
- BGP path attributes
- AS_paths
- Local_preference
- BGP communities
- BGP decision process
- Control of route advertisement and withdrawal
- Multiprotocol extensions to BGP
- BGP-MP address families
IP as a Service Network
- The Internet as a service
- Difference between "the Internet" and an IP backbone
- VPNs, Intranets and Extranets
- Closed user groups and security
- Private address space
- The challenges of supporting voice over IP
- Voice performance and signalling
- Current techniques for providing VPNs (tunelling protocols, encryption, segregated routeing)
- Scalability issues with current VPNs
- IPv4 address issues: address translation
Multiprotocol Label Switching (MPLS)
- Objectives of MPLS
- Traffic Engineering with MPLS
- Forwarding equivalence classes
- Principles of label switching operation
- Label Switched Paths (LSPs)
- Label stacks and LSP tunnels
- Pushing and popping label from label stacks
- Label encoding
- Shim header for MPLS over Ethernet
- Tunnelling MPLS in Frame Relay and ATM
- Label distribution mechanisms
- Label Distribution Protocol
- LDP adjacencies
- Routeing in MPLS
- Ordered and Independent LSP control
- Aggregation and label merging
- ATM and Frame Relay switches in MPLS
- Configuration required for Frame Relay MPLS operation
- Use of ATM LSRs
- Improvements in scalability obtained from using ATM LSRs
- Constraint Based LDP and explicit routes
- Preemption, holding and priority of LSPs
- MPLS fast recovery
- Use of RSVP for establishing LSPs
MPLS based VPNs
- Customer Edge, Provider Edge and Provider routers
- Scope of VPN awareness
- Interfaces between CE and PE routers
- Sites and Virtual Routeing and Forwarding Tables (VRFs)
- How packets are associated with VRFs
- VPN options and flexibility
- Sites belonging to multiple VPNs
- BGP extensions for label distribution
- How MPLS labels relates to the BGP next hop
- How MPLS aids VPN support: use of 2-label stacks
- Forwarding packets across the IP backbone
- Route distribution within VPN architecture
- Route targets
- Encoding route target as a BGP ext-community attribute
- Import and Export targets
- Independence from VPN addressing
- Choices for CE/PE routeing protocol
- Carriers' carrier architectures
Delivering QoS in an IP network
- Requirements for QoS in IP and IP-VPNs
- Use of the IP TOS field to indicate required precedence
- Challenge of QoS provision
- Delay variation and smoothing
- Diff-serv and Int-serv IETF initiatives
- RSVP for establishing support for a differentiated service
- Using ATM to support IP QoS
Differentiated Services (Diff-serv)
- Description of Differentiated Services
- Service provider defined push model vs standards based pull model
- Architecture of a Diff-serv router
- Packet aggregates
- Traffic conditioning
- Metering, marking and dropping
- Operational model for Diff-serv
- Per-hop behaviours
- The differences between ATM stds based QoS classes and the Diff-serv SP defined classes
- Expedited and assured forwarding
- IP class selector
- ATM support for Diff-serv
- MPLS support for Diff-serv
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Click on course date to make a booking or check availability.
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London |
2 days |
£995 |
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9 - 10 |
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