Provider Backbone Bridging

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 147 Experts worldwide ranked by ideXlab platform

A. Sajassi - One of the best experts on this subject based on the ideXlab platform.

  • Interconnect Solution for EVPN Overlay networks
    2018
    Co-Authors: Senthil Sathappan, Jorge Rabadan, Wim Henderickx, John Drake, A. Sajassi
    Abstract:

    This document describes how Network Virtualization Overlays (NVO) can be connected to a Wide Area Network (WAN) in order to extend the layer-2 connectivity required for some tenants. The solution analyzes the interaction between NVO networks running Ethernet Virtual Private Networks (EVPN) and other L2VPN technologies used in the WAN, such as Virtual Private LAN Services (VPLS), VPLS extensions for Provider Backbone Bridging (PBB-VPLS), EVPN or PBB-EVPN. It also describes how the existing technical specifications apply to the Interconnection and extends the EVPN procedures needed in some cases. In particular, this document describes how EVPN routes are processed on Gateways (GWs) that interconnect EVPN-Overlay and EVPN-MPLS networks, as well as the Interconnect Ethernet Segment (I-ES) to provide multi-homing, and the use of the Unknown MAC route to avoid MAC scale issues on Data Center Network Virtualization Edge (NVE) devices.

  • Ethernet-Tree (E-Tree) Support in Ethernet VPN (EVPN) and Provider Backbone Bridging EVPN (PBB-EVPN)
    2018
    Co-Authors: Sami Boutros, A. Sajassi, Jorge Rabadan, John Drake, James Uttaro, S. Salam
    Abstract:

    The MEF Forum (MEF) has defined a rooted-multipoint Ethernet service known as Ethernet-Tree (E-Tree). A solution framework for supporting this service in MPLS networks is described in RFC 7387, "A Framework for Ethernet-Tree (E-Tree) Service over a Multiprotocol Label Switching (MPLS) Network". This document discusses how those functional requirements can be met with a solution based on RFC 7432, "BGP MPLS Based Ethernet VPN (EVPN)", with some extensions and a description of how such a solution can offer a more efficient implementation of these functions than that of RFC 7796, "Ethernet- Tree (E-Tree) Support in Virtual Private LAN Service (VPLS)". This document makes use of the most significant bit of the Tunnel Type field (in the P-Multicast Service Interface (PMSI) Tunnel attribute) governed by the IANA registry created by RFC 7385; hence, it updates RFC 7385 accordingly.

  • 1 Shortest Path Provider Backbone Bridging Forwarding Solution Options
    2016
    Co-Authors: Don Fedyk, A. Sajassi
    Abstract:

    Recently, the Ethernet Shortest Path Bridging [SPB] project has been debating two proposals for source tree identification when Shortest Path Bridging is applied in a Provider Backbone Bridge [PBB] context (SPPBB). A number of papers [PLSB] an

  • Support for Shortest Path Bridging MAC Mode over Ethernet VPN (EVPN)
    2016
    Co-Authors: David Allan, Don Fedyk, Jeff Tantsura, A. Sajassi
    Abstract:

    This document describes how Ethernet Shortest Path Bridging MAC mode (SPBM) can be combined with Ethernet VPN (EVPN) to interwork with Provider Backbone Bridging Provider Edges (PBB PEs) as described in the PBB-EVPN solution (RFC 7623). This is achieved via operational isolation of each Ethernet network attached to an EVPN core while supporting full interworking between the different variations of Ethernet networks.

  • Provider Backbone Bridging Combined with Ethernet VPN (PBB-EVPN)
    2015
    Co-Authors: Aldrin Isaac, S. Salam, Nabil Bitar, Wim Henderickx, A. Sajassi
    Abstract:

    This document discusses how Ethernet Provider Backbone Bridging (PBB) can be combined with Ethernet VPN (EVPN) in order to reduce the number of BGP MAC Advertisement routes by aggregating Customer/Client MAC (C-MAC) addresses via Provider Backbone MAC (B-MAC) address, provide client MAC address mobility using C-MAC aggregation, confine the scope of C-MAC learning to only active flows, offer per-site policies, and avoid C-MAC address flushing on topology changes. The combined solution is referred to as PBB-EVPN.

Ashwin Gumaste - One of the best experts on this subject based on the ideXlab platform.

  • On the Backbone VLAN Identifier (BVID) Allocation in 802.1Qay Provider Backbone Bridged — Traffic Engineered Networks
    IEEE Transactions on Network and Service Management, 2014
    Co-Authors: Deval Bhamare, Ashwin Gumaste, Mohan Krishnamoorthy, Niraj Ramesh Dayama
    Abstract:

    Carrier Ethernet is rapidly being deployed in the metropolitan and core segments of the transport network. One of the emerging flavors of Carrier Ethernet is the IEEE 802.1Qay PBB-TE or Provider Backbone Bridging-Traffic Engineering standard. PBB-TE relies on the assignment of a network-specific Virtual Local Area Network (VLAN) tag, called the Backbone VLAN ID or BVID that is used in conjunction with a Backbone Media Access Control (MAC) address for forwarding. The 12-bit BVID along with 48-bit Backbone MAC address are used to forward an Ethernet frame. The assignment of BVIDs in a network is critical, given that there are only 4094 possible assignments, especially for those paths that are overlapping in the network graph and incident at the same destination. While the only way to scale is to reuse BVIDs, this method can lead to a complication if the same BVID is allocated to an overlapping path. To the best of our knowledge, this is the first instance of isolating this problem of limited BVID availability which rises only due to graphical overlap between services. We formulate and solve this as a constrained optimization problem. We present optimal and heuristic algorithms to solve the BVID problem. The optimal approach solves the `static' case, while the heuristic can solve both the `static' and the `dynamic' cases of the BVID allocation problem. Results show that the developed heuristics perform close to the optimal and can be used in commercial settings for both the static and dynamic cases.

  • design of a shared memory carrier ethernet switch compliant to Provider Backbone Bridging traffic engineering ieee802 1qay
    High Performance Switching and Routing, 2012
    Co-Authors: Saurabh Mehta, Ashutosh Upadhyaya, Sarvesh Bidkar, Ashwin Gumaste
    Abstract:

    Carrier Ethernet is emerging as a new transport paradigm across metropolitan and core networks. Provider Backbone Bridging-Traffic Engineering or PBB-TE was standardized in the IEEE as 802.1Qay as a mechanism to provide a dedicated transport service at the Ethernet layer. This paper discusses implementation of the PBB-TE standard using shared memory switch architecture, though the same architecture argument can be extended to implement MPLS-TP (the other manifestation of Carrier Ethernet). While shared memory switch architectures have been well investigated, we provide to the best of our knowledge the first carrier-class aggregation switch implemented in a single Field Programmable Gate Array (FPGA). This low-cost implementation paves the way for advances in Carrier Ethernet technologies to be made available to the access part of the network using rapid prototyping and commercial off the shelf components. The switch architecture supports multiple QoS levels and implements circuit emulation to transport traditional circuit services over a packet Backbone. A rigorous simulation study validates our effort.

  • HPSR - Design of a shared memory Carrier Ethernet switch compliant to Provider Backbone Bridging-Traffic Engineering (IEEE802.1Qay)
    2012 IEEE 13th International Conference on High Performance Switching and Routing, 2012
    Co-Authors: Saurabh Mehta, Ashutosh Upadhyaya, Sarvesh Bidkar, Ashwin Gumaste
    Abstract:

    Carrier Ethernet is emerging as a new transport paradigm across metropolitan and core networks. Provider Backbone Bridging-Traffic Engineering or PBB-TE was standardized in the IEEE as 802.1Qay as a mechanism to provide a dedicated transport service at the Ethernet layer. This paper discusses implementation of the PBB-TE standard using shared memory switch architecture, though the same architecture argument can be extended to implement MPLS-TP (the other manifestation of Carrier Ethernet). While shared memory switch architectures have been well investigated, we provide to the best of our knowledge the first carrier-class aggregation switch implemented in a single Field Programmable Gate Array (FPGA). This low-cost implementation paves the way for advances in Carrier Ethernet technologies to be made available to the access part of the network using rapid prototyping and commercial off the shelf components. The switch architecture supports multiple QoS levels and implements circuit emulation to transport traditional circuit services over a packet Backbone. A rigorous simulation study validates our effort.

  • ICC - The BVID Allocation Problem in 802.1Qay Provider Backbone Bridged Traffic Engineered Networks
    2011 IEEE International Conference on Communications (ICC), 2011
    Co-Authors: Deval Bhamare, Saurabh Mehta, Ashutosh Upadhyaya, Ashwin Kshirasagar, Ashwin Gumaste
    Abstract:

    Carrier Ethernet has rapidly advanced itself to become an important technology for metro transport. PBB-TE or Provider Backbone Bridging -Traffic Engineering is one of the mechanisms being considered for the deployment of Carrier Ethernet. PBB-TE relies on the assignment of a network-specific VLAN tag called the BVID that is further dependent on customer and service Provider VLAN tags, service Provider MAC address and an intermediate instantiation service tag. Given the limited availability of BVIDs in a network on account of the basic tag format, it is desired to reuse tags to facilitate larger service instance provisioning. To the best of our knowledge, this is the first instance of isolating this problem of limited BVID availability, which is further reduced to a constrained optimization problem. We present optimal (static) and heuristic (dynamic) algorithms to the solution of the BVID problem. Results show significant betterment as compared to commercial practices for both the static and dynamic case.

  • ICC - An Evolutionary Approach to End-to-End Addressing and Routing in All-Ethernet Wide-Area Networks
    2009 IEEE International Conference on Communications, 2009
    Co-Authors: Ashwin Gumaste, M. Chamania, Admela Jukan
    Abstract:

    While the introduction of new Ethernet-based wide-area solutions, such as Provider-Backbone Bridging traffic engineering-PBB-TE, paves a way for Ethernet to become a carrier class service, it is restricted to the metro area and hence unable to provision global end-to-end communication. In this paper, we propose a new scheme for all-Ethernet wide area networking that involves a unique addressing and routing mechanism, and leads to a scalable, hierarchical and service-oriented transport network architecture. The scalability is achieved by means of abstraction of any irregular physical topology into a regular logical topology, based on the concept of binary trees. The regular logical topology is represented with logical 1x2 Ethernet switches as the fundamental building blocks which allow switching using a unique binary addresses in a simple and automated fashion. We propose an evolutionary architecture to provide end-to-end Ethernet routes using binary addresses embedded in stacked VLAN tags on native Ethernet frames, in line with the emerging standards. The results show that a significant simplification of wide-area inter-networking can be achieved, while supporting carrier-grade network performance with all-Ethernet features.

S. Salam - One of the best experts on this subject based on the ideXlab platform.

  • Ethernet-Tree (E-Tree) Support in Ethernet VPN (EVPN) and Provider Backbone Bridging EVPN (PBB-EVPN)
    2018
    Co-Authors: Sami Boutros, A. Sajassi, Jorge Rabadan, John Drake, James Uttaro, S. Salam
    Abstract:

    The MEF Forum (MEF) has defined a rooted-multipoint Ethernet service known as Ethernet-Tree (E-Tree). A solution framework for supporting this service in MPLS networks is described in RFC 7387, "A Framework for Ethernet-Tree (E-Tree) Service over a Multiprotocol Label Switching (MPLS) Network". This document discusses how those functional requirements can be met with a solution based on RFC 7432, "BGP MPLS Based Ethernet VPN (EVPN)", with some extensions and a description of how such a solution can offer a more efficient implementation of these functions than that of RFC 7796, "Ethernet- Tree (E-Tree) Support in Virtual Private LAN Service (VPLS)". This document makes use of the most significant bit of the Tunnel Type field (in the P-Multicast Service Interface (PMSI) Tunnel attribute) governed by the IANA registry created by RFC 7385; hence, it updates RFC 7385 accordingly.

  • Provider Backbone Bridging Combined with Ethernet VPN (PBB-EVPN)
    2015
    Co-Authors: Aldrin Isaac, S. Salam, Nabil Bitar, Wim Henderickx, A. Sajassi
    Abstract:

    This document discusses how Ethernet Provider Backbone Bridging (PBB) can be combined with Ethernet VPN (EVPN) in order to reduce the number of BGP MAC Advertisement routes by aggregating Customer/Client MAC (C-MAC) addresses via Provider Backbone MAC (B-MAC) address, provide client MAC address mobility using C-MAC aggregation, confine the scope of C-MAC learning to only active flows, offer per-site policies, and avoid C-MAC address flushing on topology changes. The combined solution is referred to as PBB-EVPN.

  • Virtual Private LAN Service (VPLS) Interoperability with Provider Backbone Bridges
    2013
    Co-Authors: Florin Balus, S. Salam, Nabil Bitar, A. Sajassi
    Abstract:

    The scalability of Hierarchical Virtual Private LAN Service (H-VPLS) with Ethernet access networks (RFC 4762) can be improved by incorporating Provider Backbone Bridge functionality in the VPLS access. Provider Backbone Bridging has been standardized as IEEE 802.1ah-2008. It aims to improve the scalability of Media Access Control (MAC) addresses and service instances in Provider Ethernet networks. This document describes different interoperability scenarios where Provider Backbone Bridge functionality is used in H-VPLS with Ethernet or MPLS access network to attain better scalability in terms of number of customer MAC addresses and number of service instances. The document also describes the scenarios and the mechanisms for incorporating Provider Backbone Bridge functionality within H-VPLS with existing Ethernet access and interoperability among them. Furthermore, the document discusses the migration mechanisms and scenarios by which Provider Backbone Bridge functionality can be incorporated into H-VPLS with existing MPLS access.

  • PBB E-VPN
    2011
    Co-Authors: S. Salam, A. Sajassi, Nabil Bitar, Sami Boutros, Lizhong Jin
    Abstract:

    This document discusses how Ethernet Provider Backbone Bridging [802.1ah] can be combined with E-VPN in order to reduce the number of BGP MAC advertisement routes, provide Customer MAC address mobility with MAC sub-netting, provide Customer MAC address scoping, offer per site policies and avoid Customer MAC address flushing on topology changes. The combined solution is referred to as PBB-EVPN. Conventions

  • Customer MAC Address Flushing Mechanisms for Provider Backbone Bridging over VPLS
    2008
    Co-Authors: A. Sajassi, S. Salam, Nabil Bitar, Luyuan Fang, Dinesh Mohan
    Abstract:

    The scalability of H-VPLS (either with MPLS or Ethernet access network) can be improved by incorporating Provider Backbone Bridge (PBB) functionality in VPLS access. PBB introduces the notion of Backbone MAC (B-MAC) addresses vs. Customer MAC (C-MAC) addresses, thereby leading to the requirement for having MAC address flushing mechanisms for each. This document discusses a C-MAC address flushing notification mechanism to be used in VPLS networks that employ PBB technology.

Niraj Ramesh Dayama - One of the best experts on this subject based on the ideXlab platform.

  • On the Backbone VLAN Identifier (BVID) Allocation in 802.1Qay Provider Backbone Bridged — Traffic Engineered Networks
    IEEE Transactions on Network and Service Management, 2014
    Co-Authors: Deval Bhamare, Ashwin Gumaste, Mohan Krishnamoorthy, Niraj Ramesh Dayama
    Abstract:

    Carrier Ethernet is rapidly being deployed in the metropolitan and core segments of the transport network. One of the emerging flavors of Carrier Ethernet is the IEEE 802.1Qay PBB-TE or Provider Backbone Bridging-Traffic Engineering standard. PBB-TE relies on the assignment of a network-specific Virtual Local Area Network (VLAN) tag, called the Backbone VLAN ID or BVID that is used in conjunction with a Backbone Media Access Control (MAC) address for forwarding. The 12-bit BVID along with 48-bit Backbone MAC address are used to forward an Ethernet frame. The assignment of BVIDs in a network is critical, given that there are only 4094 possible assignments, especially for those paths that are overlapping in the network graph and incident at the same destination. While the only way to scale is to reuse BVIDs, this method can lead to a complication if the same BVID is allocated to an overlapping path. To the best of our knowledge, this is the first instance of isolating this problem of limited BVID availability which rises only due to graphical overlap between services. We formulate and solve this as a constrained optimization problem. We present optimal and heuristic algorithms to solve the BVID problem. The optimal approach solves the `static' case, while the heuristic can solve both the `static' and the `dynamic' cases of the BVID allocation problem. Results show that the developed heuristics perform close to the optimal and can be used in commercial settings for both the static and dynamic cases.

Nabil Bitar - One of the best experts on this subject based on the ideXlab platform.

  • Provider Backbone Bridging Combined with Ethernet VPN (PBB-EVPN)
    2015
    Co-Authors: Aldrin Isaac, S. Salam, Nabil Bitar, Wim Henderickx, A. Sajassi
    Abstract:

    This document discusses how Ethernet Provider Backbone Bridging (PBB) can be combined with Ethernet VPN (EVPN) in order to reduce the number of BGP MAC Advertisement routes by aggregating Customer/Client MAC (C-MAC) addresses via Provider Backbone MAC (B-MAC) address, provide client MAC address mobility using C-MAC aggregation, confine the scope of C-MAC learning to only active flows, offer per-site policies, and avoid C-MAC address flushing on topology changes. The combined solution is referred to as PBB-EVPN.

  • Virtual Private LAN Service (VPLS) Interoperability with Provider Backbone Bridges
    2013
    Co-Authors: Florin Balus, S. Salam, Nabil Bitar, A. Sajassi
    Abstract:

    The scalability of Hierarchical Virtual Private LAN Service (H-VPLS) with Ethernet access networks (RFC 4762) can be improved by incorporating Provider Backbone Bridge functionality in the VPLS access. Provider Backbone Bridging has been standardized as IEEE 802.1ah-2008. It aims to improve the scalability of Media Access Control (MAC) addresses and service instances in Provider Ethernet networks. This document describes different interoperability scenarios where Provider Backbone Bridge functionality is used in H-VPLS with Ethernet or MPLS access network to attain better scalability in terms of number of customer MAC addresses and number of service instances. The document also describes the scenarios and the mechanisms for incorporating Provider Backbone Bridge functionality within H-VPLS with existing Ethernet access and interoperability among them. Furthermore, the document discusses the migration mechanisms and scenarios by which Provider Backbone Bridge functionality can be incorporated into H-VPLS with existing MPLS access.

  • Extensions to the Virtual Private LAN Service (VPLS) Provider Edge (PE) Model for Provider Backbone Bridging
    2013
    Co-Authors: Florin Balus, Nabil Bitar, A. Sajassi
    Abstract:

    The IEEE 802.1 Provider Backbone Bridges (PBBs) specification defines an architecture and bridge protocols for interconnection of multiple Provider Bridged Networks (PBNs). Provider Backbone Bridging was defined by IEEE as a connectionless technology based on multipoint VLAN tunnels. PBB can be used to attain better scalability than Provider Bridges (PBs) in terms of the number of customer Media Access Control addresses and the number of service instances that can be supported. The Virtual Private LAN Service (VPLS) provides a framework for extending Ethernet LAN services, using MPLS tunneling capabilities, through a routed MPLS Backbone without running the Rapid Spanning Tree Protocol (RSTP) or the Multiple Spanning Tree Protocol (MSTP) across the Backbone. As a result, VPLS has been deployed on a large scale in service Provider networks. This document discusses extensions to the VPLS Provider Edge (PE) model required to incorporate desirable PBB components while maintaining the service Provider fit of the initial model.

  • Provider Edge (PE) Model for Provider Backbone Bridging
    2013
    Co-Authors: Nabil Bitar
    Abstract:

    The IEEE 802.1 Provider Backbone Bridges (PBBs) specification defines an architecture and bridge protocols for interconnection of multiple Provider Bridged Networks (PBNs). Provider Backbone Bridging was defined by IEEE as a connectionless technology based on multipoint VLAN tunnels. PBB can be used to attain better scalability than Provider Bridges (PBs) in terms of the number of customer Media Access Control addresses and the number of service instances that can be supported. The Virtual Private LAN Service (VPLS) provides a framework for extending Ethernet LAN services, using MPLS tunneling capabilities, through a routed MPLS Backbone without running the Rapid Spanning Tree Protocol (RSTP) or the Multiple Spanning Tree Protocol (MSTP) across the Backbone. As a result, VPLS has been deployed on a large scale in service Provider networks. This document discusses extensions to the VPLS Provider Edge (PE) model required to incorporate desirable PBB components while maintaining the service Provider fit of the initial model. Balus, et al. Informational [Page 1

  • PBB E-VPN
    2011
    Co-Authors: S. Salam, A. Sajassi, Nabil Bitar, Sami Boutros, Lizhong Jin
    Abstract:

    This document discusses how Ethernet Provider Backbone Bridging [802.1ah] can be combined with E-VPN in order to reduce the number of BGP MAC advertisement routes, provide Customer MAC address mobility with MAC sub-netting, provide Customer MAC address scoping, offer per site policies and avoid Customer MAC address flushing on topology changes. The combined solution is referred to as PBB-EVPN. Conventions

Related terms

Provider Backbone Bridging - 15 days free trial to Access Experts & Abstracts