Cell-Mode MPLS over ATM Overview, Configuration, and Verification
Case Study 10 BGP Site of Origin
Site of Origin (SoO) is one of the attributes a PE router assigns to a prefix prior to redistributing any VPNv4 prefixes. SoO in BGP is configured at neighbor level and is used to manage MPLS VPN traffic and to prevent transient routing loops from occurring in complex and mixed network topologies. SoO uniquely identifies the site from which the PE router learned the prefix. All prefixes learned from a particular site must be assigned the same site of origin attribute, even if the site is multiply connected to a single PE, or is connected to multiple PEs. The objective of this case study is to demonstrate SoO configuration when BGP PE-CE routing protocol is used In this case study, CE1-A and CE2-A belong to the same site, and this site is connected to multiple PE routers PE1-AS1 and PE2-AS1. Figure 14-55 shows the topology where all Customer A sites belong to BGP AS 65001.
Figure 14-55. SoO in BGP PE-CE Based MPLS VPN Network
Figure 14-56 shows the relevant configuration to configure and verify SoO in BGP PE-CE based MPLS VPN network.
Figure 14-56. Configure and Verify BGP SoO
MPLS Overview
- MPLS Overview
- Unicast IP Forwarding in Traditional IP Networks
- Overview of MPLS Forwarding
- MPLS Terminology
- MPLS Control and Data Plane Components
- MPLS Operation
- Special Outgoing Label Types
- Penultimate Hop Popping
- Frame-Mode MPLS
- Cell-Mode MPLS
Basic MPLS Configuration
- Basic MPLS Configuration
- Frame-Mode MPLS Configuration and Verification
- Cell-Mode MPLS over ATM Overview, Configuration, and Verification
- Command Reference
Basic MPLS VPN Overview and Configuration
- Basic MPLS VPN Overview and Configuration
- VPN Categories
- MPLS VPN Architecture and Terminology
- MPLS VPN Routing Model
- MPLS VPN Basic Configuration
- Outbound Route Filters
- Command Reference
PE-CE Routing Protocol-Static and RIP
- PE-CE Routing Protocol-Static and RIP
- Static PE-CE Routing Overview, Configuration, and Verification
- Static PE-CE Routing Command Reference
- RIPv2 PE-CE Routing Overview, Configuration, and Verification
- RIPv1 PE-CE Routing Configuration and Verification
- RIP PE-CE Routing Command Reference
PE-CE Routing Protocol-OSPF and EIGRP
- PE-CE Routing Protocol-OSPF and EIGRP
- OSPF PE-CE Routing Protocol Overview, Configuration and Verification
- EIGRP PE-CE Routing Protocol Overview, Configuration, and Verification
Implementing BGP in MPLS VPNs
- Implementing BGP in MPLS VPNs
- BGP PE-CE Routing Protocol Overview, Configuration, and Verification
- Implementing Route-Reflectors in MPLS VPN Networks
- Case Study-Hub and Spoke MPLS VPN Network Using BGP PE-CE Routing for Sites Using Unique AS Numbers
- Case Study-Hub and Spoke MPLS VPN Network with Sites Using Same AS Numbers
- Command Reference
Inter-Provider VPNs
- Inter-Provider VPNs
- Overview of Inter-Provider VPNs
- Option 1: Inter-Provider VPN Using Back-to-Back VRF Method
- Option 2: Inter-Provider VPNs Using ASBR-to-ASBR Approach
- Option 3: Multi-Hop MP-eBGP Between RR and eBGP Between ASBRs
- Option 4: Non-VPN Transit Provider
- Case Study-Inter-AS Implementing Route-Reflector and BGP Confederation in Provider Networks
- Case Study-Multi-Homed Inter-AS Provider Network
- Command Reference
Carrier Supporting Carriers
- Carrier Supporting Carriers
- Carrier Supporting Carriers Overview
- Deployment Scenarios with CSC Architecture
- CSC Architecture Benefits
- Command Reference
MPLS Traffic Engineering
- MPLS Traffic Engineering
- TE Basics
- MPLS TE Theory
- Constraint-Based Routing and Operation in MPLS TE
- Configuring MPLS TE
- Command Reference
Implementing VPNs with Layer 2 Tunneling Protocol Version 3
- Implementing VPNs with Layer 2 Tunneling Protocol Version 3
- L2TPv3 Overview
- Configuring L2TPv3 Tunnels for Layer 2 VPN
- Configuring L2TPv3 Static Tunnels
- Configuring L2TPv3 Dynamic Tunnels
- Implementing Layer 3 VPNs over L2TPv3 Tunnels
- Command Reference
Any Transport over MPLS (AToM)
- Any Transport over MPLS (AToM)
- Introduction to Layer 2 VPNs
- Implementing AToM for Like to Like Circuits
- L2 VPN-Any to Any Interworking
- Local Switching
- Command Reference
Virtual Private LAN Service (VPLS)
- Virtual Private LAN Service (VPLS)
- VPLS Overview
- VPLS Topology-Single PE or Direct Attachment
- Hierarchical VPLS-Distributed PE Architecture
- Command Reference
Implementing Quality of Service in MPLS Networks
- Implementing Quality of Service in MPLS Networks
- Introduction to QoS-Classification and Marking
- MPLS QoS Implementation
- MPLS QoS Operating Modes
- Modular QoS CLI: Configuration of QoS on Cisco Routers
- Configuration and Implementation of MPLS QoS in Uniform Mode and Short Pipe Mode Operation
- Implementing MPLS QoS for Layer 2 VPN Implementations
- Command Reference
MPLS Features and Case Studies
- MPLS Features and Case Studies
- Case Study 1: Implementing Multicast Support for MPLS VPNs
- Case Study 2: Implementing Multi-VRF CE, VRF Selection Using Source IP Address, VRF Selection Using Policy-Based Routing, NAT and HSRP Support in MPLS VPN, and Multicast VPN Support over Multi-VRF CE
- Case Study 3: Implementing Layer 2 VPNs over Inter-AS Topologies Using Layer 2 VPN Pseudo-Wire Switching
- Case Study 4: Implementing Layer 3 VPNs over Layer 2 VPN Topologies and Providing L2 VPN Redundancy
- Case Study 5: Implementing Dynamic Layer 3 VPNs Using mGRE Tunnels
- Case Study 6: Implementing Class-Based Tunnel Selection with MPLS Traffic Engineering
- Case Study 7: Implementing Hub and Spoke Topologies with OSPF
- Case Study 8: Implementing Hub and Spoke Topologies with EIGRP
- Case Study 9: Implementing VPLS Services with the GSR 12000 Series
- Case Study 10: BGP Site of Origin
- Command Reference
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Pages: 130
