WO2005018174A1 - Fourniture de services multiples dans un dispositif d'envoi par paquets avec ports logiques - Google Patents

Fourniture de services multiples dans un dispositif d'envoi par paquets avec ports logiques Download PDF

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Publication number
WO2005018174A1
WO2005018174A1 PCT/US2003/024999 US0324999W WO2005018174A1 WO 2005018174 A1 WO2005018174 A1 WO 2005018174A1 US 0324999 W US0324999 W US 0324999W WO 2005018174 A1 WO2005018174 A1 WO 2005018174A1
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WO
WIPO (PCT)
Prior art keywords
port
service
logical
incoming packet
forwarding device
Prior art date
Application number
PCT/US2003/024999
Other languages
English (en)
Inventor
Vinay Bannai
Theodora Karah
Peter Geoffrey Jones
Jacqueline M. Zoucha
Arun Sastry
Original Assignee
Luminous Networks, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Luminous Networks, Inc. filed Critical Luminous Networks, Inc.
Priority to AU2003264031A priority Critical patent/AU2003264031A1/en
Priority to PCT/US2003/024999 priority patent/WO2005018174A1/fr
Publication of WO2005018174A1 publication Critical patent/WO2005018174A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/74—Address processing for routing
    • H04L45/742—Route cache; Operation thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/618—Details of network addresses
    • H04L2101/663—Transport layer addresses, e.g. aspects of transmission control protocol [TCP] or user datagram protocol [UDP] ports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers

Definitions

  • the present invention relates to communication networks, and in particular to a logical port system and method.
  • Network packet forwarding devices such as routers, switches, multiplexers, and the like include a limited number of physical ports to which customers may connect. Different customers typically connect to different physical ports of a packet forwarding device. In addition, different services are typically provided to a given customer over different physical ports.
  • a given customer may receive routing services over one physical port of the packet forwarding device and the same customer may receive TDM (time division multiplexing) services over another physical port of the packet forwarding device.
  • TDM time division multiplexing
  • the present system and method alleviate port density and permit a greater number of services to be provided over a given set of physical ports by creating logical ports.
  • Incoming data packets on a physical port may include a VLAN ID or an MPLS (Multi-Protocol Label Switching) label.
  • the packet forwarding device assigns the incoming data packets to a specific logical port according to the VLAN ID or the MPLS label of the incoming data packet.
  • the packet forwarding device may also assign a specific service to each logical port. Further, different customers may be assigned separate logical ports and be- connected to a common physical port.
  • a given logical port may include more than one physical port and may span multiple physical ports on the same slot, physical ports on different slots, or physical ports on different packet forwarding devices.
  • each logical port may include SLA (Service Level Agreements) or QoS (Quality of Service) associated with the logical port, thereby permitting different QoS to be provided to different logical ports on the same or different physical ports. Accordingly, according to some embodiments of the present invention, each service is associated with a logical port.
  • SLA Service Level Agreements
  • QoS Quality of Service
  • a logical port is used to' identify and manage multiple sets of flows across a single interface.
  • the logical port provides a common set of abstractions that can support delivery of a variety of services, allowing the variety of services to share common lower level mechanisms.
  • the logical port comprises one of a number of interfaces on a physical interface, such as a physical port .
  • Logical ports may have a one-to-one mapping to services, such that each logical port supports either a different type of service or services for different customers. Thus, a single customer may have multiple logical ports supporting multiple associated services. Higher-level services can use logical ports as a way to gather statistics on a logical port basis.
  • a logical port defines a group of packets according to certain pre-defined criteria.
  • the logical ports behave similar to a physical port in terms of traffic service.
  • the logical ports permit multiple customers to be connected to a single physical port of a node.
  • the logical ports also permit different services to be provided to a customer over a single physical port.
  • the logical ports help alleviate port density problems .
  • FIG. 1 illustrates a communication network in accordance with an embodiment of the present invention.
  • FIG. 2 illustrates details of a FIG. 1 node in accordance with an embodiment of the present invention.
  • FIG. 3 is a functional diagram illustrating system architecture .
  • FIG. 1 illustrates a network 100 in accordance with one embodiment of the present invention.
  • the network 100 includes a ring 102, which interconnects nodes 104, 106, 108, 110.
  • the ring 102 may comprise a fiber optic ring having a Resilient Packet Ring (RPR) topology.
  • RPR Resilient Packet Ring
  • the network 100 may comprise a metro area network (MAN) .
  • Each of the nodes 104- 110 may comprise a high speed routing/multiplexing device. Details of the nodes are described below and in U.S. Patent Application No. 09/518,956, the disclosure of which is hereby incorporated by reference in its entirety.
  • the network 100 has locations, or sites, of customer A and customer B connected thereto. As illustrated, customer A has multiple locations 120, 122, 124, and 126. Each of these locations may comprise a LAN.
  • the location 120 is connected to node 110
  • the location 122 is connected to node 108
  • locations 124, 126 are connected to node 106.
  • node lio provides multiple services to customer A at location 120 over a single physical port of the node 110 using a logical port system and method.
  • the node inspects incoming data packet received by the node over the single physical port and identifies a logical port identifier within data packet.
  • the logical port identifier comprises an MPLS label associated with a logical port .
  • the logical port identifier comprises a VLAN ID (Virtual Local Area Network Identifier) .
  • the node then uses a lookup table to identify, or determine, the logical port associated with the packet .
  • the node then assigns a service to the packet based on the logical port to which it is assigned.
  • nodes 108, 110 provide a single service to customer A at locations 120, 122 over a physical port of the node 110 and a physical port of the node 108 using a logical port system and method.
  • the nodes 108, 110 each inspect incoming data packets received by the nodes 108, 110 over respective physical ports and identify the logical port identifier within each data packet .
  • the logical port identifiers may comprise MPLS labels or VLAN IDs.
  • the nodes 108, 110 then each use a lookup table to identify, or determine, the logical port associated with the packet.
  • the incoming data packets include identical logical port identifiers and are thus assigned to the same service for the same customer, namely, customer A.
  • a management console 130 may also be connected to the ring 102 by a node 132.
  • the management console 130 is used to permit network management and provisioning of the devices connected to the ring 102 as described in more detail below.
  • the management console 130 may be used to access individual nodes 104-110. to establish logical ports thereon.
  • the logical port may be used to setup cross connects for wire mode transports. This allows multipoint to point physical port aggregation and de- aggregation based on logical ports. Services such as Ethernet private lines (EPL) , virtual leased lines (VLL) , and circuit emulation services (CES) , are examples of this type of service.
  • EPL Ethernet private lines
  • VLL virtual leased lines
  • CES circuit emulation services
  • MPLS label based logical ports provide layer 1 services .
  • the logical support functions as if a physical port were set in a TLS (Transparent LAN Services) mode. Packets incoming on the logical port interface would be switched based on the layer 2 destination MAC address. This provides aggregation and de-aggregation service at later 2. Thus, traffic may be aggregated using logical ports for each domain. Additional details regarding TLS mode are disclosed in U.S. Patent Application entitled “System and Method for Providing Transparent LAN Services" filed on even date herewith and incorporated herein by reference above .
  • the logical port functions to support aggregation and de- aggregation services using MPLS labels .
  • the MPLS label of an incoming packet is examined to forward the data packet .
  • the MPLS label ranges may also be used to specify logical ports for offering layer 1 services.
  • the mode of the logical port determines whether it forwards using layer 1 or layer 2.5.
  • a logical port would support aggregation and de-aggregation using layer 3 header information.
  • this mode also referred to as routing mode, incoming packets are routed based on the destination IP address of each incoming packet.
  • FIG. 2 illustrates details of one of the nodes of FIG. 1, which may be similarly configured.
  • Node 108 is shown as an example.
  • the node 108 includes ring interface cards 230 and 232, a switching card 238, line cards 252, and a system controller 262.
  • the ring interface cards 230 and 232 convert the incoming optical signals on fiber optic cables 234 and 236 to electrical digital signals for application to switching card 238.
  • the ring interface cards 230, 232 may be implemented as a single card. Additional details regarding the ring interface cards 230 and 232 and the node 108 are disclosed in U.S. Patent Application No. 09/519,442, entitled "Dynamically Allocated Ring Protection and Restoration Technique" filed March 3, 2000, the disclosure of which is hereby incorporated by reference in its entirety.
  • FIG. 3 is a functional diagram 300 illustrating system architecture.
  • the functional diagram 300 includes system controller applications 302, a control plane framework 304, and line card applications 306.
  • the system controller applications 302 may run on the system controller 262 of FIG. 2 and include the following modules: a management interface 310, a shelf manager 312, a system port manager 314, a policy manager 316, and a classifier 318.
  • the classifier 318 verifies the configuration of the newly-created logical port and downloads necessary information (e.g., vlan_id or mpls label, port mode, actions to be taken for incoming/outgoing packets on the specified logical port) to the associated line card (s) .
  • necessary information e.g., vlan_id or mpls label, port mode, actions to be taken for incoming/outgoing packets on the specified logical port
  • the management interface 310 may comprise a graphical user interface (GUI) based interface that permits a user at the management console 130 (FIG. 1) to remotely configure, monitor, and manage the associated node.
  • GUI graphical user interface
  • the shelf manager 312 receives data from the management interface 310, stores the information for persistency, and forwards the information to the system port manager 314.
  • the system port manager 314 handles the creation and the management of a logical port.
  • the system port manager 314 specifies the mode, the administrative state, the IP address, and the MAC address of the logical port and communicates with the classifier 318.
  • the shelf manager 312 provides the interface to management of the system or node resources.
  • the resources may include the cards, ports and configuration information.
  • the system port manager 314 provides a uniform abstraction for managing port behavior across various line card interfaces .
  • the classifier 318 and policy manager 316 manage the information related to creation of logical ports and the actions associated with them.
  • the policy manager 316 in addition also handles the communication between the switching card 238 and the line cards 252.
  • the shelf manager 312 on receipt of a request for creation/deletion of a logical port from the management interface 310, initiates actions to interact with the classifier 318 and port manager 314 to create/delete the logical port.
  • the shelf manager 312 also stores/deletes the information related to the logical port in a persistent database (not shown) .
  • the policy manager 316 in turn initiates a set of actions that get communicated to the line card port manager 320 of each line card 252 (FIG. 2) to provision the logical port at the ingress of the physical ports.
  • the policy manager 316 also handles the policy rules applied on a logical.
  • the policy manager 316 is responsible for storing/restoring policy rules from the database (not shown) and interacts with the classifier 318 to download policy applied on a logical port.
  • a logical port may be established by a user at the management console 130 (FIG. 1) by accessing the management interface 310 (FIG. 3) . Then, using the management interface 310 the user may request a new logical port.
  • the management interface 310 receives a request for a new logical port from the user.
  • the request may include specification of whether the logical port is to be MPLS label based, or VLAN ID based, and ' may specify the physical port over which the logical port will be provided.
  • the request may also include specification of data rate limits associated with the logical port.
  • the management interface 310 then forwards this information to the shelf manager 312, which provides this information to other of the system controller modules. Lastly, this information is downloaded to a line card manager 320 for control of the associated line card.
  • the new logical port is then provisioned via the management interface 310.
  • a user at the management console 130 (FIG. 1) then specifies a customer, a service, and a quality of service (QoS) for the new logical port.
  • QoS quality of service

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Des ports logiques qui permettent à des consommateurs multiples d'être connecté à différents services et de recevoir ce dernier via un port physique commun d'un dispositif d'envoi par paquets. Ces ports logiques permettent de séparer les consommateurs et peuvent être créés à partir d'étiquettes ID VLAN et d'étiquettes MPLS. Dans un mode de réalisation de l'invention, chaque service fourni via un dispositif d'envoi par paquets est associé à un port logique unique. Ce port logique peut être constitué de multiples ports physiques.
PCT/US2003/024999 2003-08-08 2003-08-08 Fourniture de services multiples dans un dispositif d'envoi par paquets avec ports logiques WO2005018174A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003264031A AU2003264031A1 (en) 2003-08-08 2003-08-08 Multiple services provisioning in a packet forwarding device with logical ports
PCT/US2003/024999 WO2005018174A1 (fr) 2003-08-08 2003-08-08 Fourniture de services multiples dans un dispositif d'envoi par paquets avec ports logiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2003/024999 WO2005018174A1 (fr) 2003-08-08 2003-08-08 Fourniture de services multiples dans un dispositif d'envoi par paquets avec ports logiques

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Cited By (8)

* Cited by examiner, † Cited by third party
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WO2008077347A1 (fr) 2006-12-25 2008-07-03 Huawei Technologies Co., Ltd. Procédé et dispositif d'agrégation de liaison, procédé et système de réception/envoi de trame mac
CN100466626C (zh) * 2006-11-27 2009-03-04 华为技术有限公司 区分无线业务的方法及无线传输设备
WO2010099759A1 (fr) * 2009-03-06 2010-09-10 Huawei Technologies Co., Ltd. Multiplexeur de transport - mécanismes pour forcer un trafic ethernet d'un domaine à commuter dans un domaine différent (externe)
CN102217245A (zh) * 2011-05-24 2011-10-12 华为技术有限公司 处理报文的方法和装置
CN102546840A (zh) * 2010-12-15 2012-07-04 中兴通讯股份有限公司 对虚拟串口和物理串口进行绑定的方法、装置及系统
CN101483641B (zh) * 2005-11-09 2012-11-21 华为技术有限公司 在一条永久虚连接上承载多种业务的方法
US9300592B2 (en) 2014-03-14 2016-03-29 International Business Machines Corporation Physical port sharing in a link aggregation group
US9559940B2 (en) 2014-03-14 2017-01-31 International Business Machines Corporation Take-over of network frame handling in a computing environment

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US5978378A (en) * 1997-09-11 1999-11-02 3Com Corporation Method and apparatus for VLAN support
EP1024642A2 (fr) * 1998-12-28 2000-08-02 Nortel Networks Corporation Procédé et appareil pour contrôler de façon dynamique la mise à disposition de services différenciés
US20010049739A1 (en) * 2000-06-02 2001-12-06 Koji Wakayama Apparatus and method for interworking between MPLS network and non-MPLS network

Patent Citations (3)

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US5978378A (en) * 1997-09-11 1999-11-02 3Com Corporation Method and apparatus for VLAN support
EP1024642A2 (fr) * 1998-12-28 2000-08-02 Nortel Networks Corporation Procédé et appareil pour contrôler de façon dynamique la mise à disposition de services différenciés
US20010049739A1 (en) * 2000-06-02 2001-12-06 Koji Wakayama Apparatus and method for interworking between MPLS network and non-MPLS network

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101483641B (zh) * 2005-11-09 2012-11-21 华为技术有限公司 在一条永久虚连接上承载多种业务的方法
CN100466626C (zh) * 2006-11-27 2009-03-04 华为技术有限公司 区分无线业务的方法及无线传输设备
EP2086178A1 (fr) * 2006-12-25 2009-08-05 Huawei Technologies Co., Ltd. Procédé et dispositif d'agrégation de liaison, procédé et système de réception/envoi de trame mac
EP2086178A4 (fr) * 2006-12-25 2009-11-25 Huawei Tech Co Ltd Procédé et dispositif d'agrégation de liaison, procédé et système de réception/envoi de trame mac
WO2008077347A1 (fr) 2006-12-25 2008-07-03 Huawei Technologies Co., Ltd. Procédé et dispositif d'agrégation de liaison, procédé et système de réception/envoi de trame mac
US9154330B2 (en) 2006-12-25 2015-10-06 Huawei Technologies Co., Ltd. Method and device of link aggregation and method and system for transceiving MAC frames
WO2010099759A1 (fr) * 2009-03-06 2010-09-10 Huawei Technologies Co., Ltd. Multiplexeur de transport - mécanismes pour forcer un trafic ethernet d'un domaine à commuter dans un domaine différent (externe)
US8238340B2 (en) 2009-03-06 2012-08-07 Futurewei Technologies, Inc. Transport multiplexer—mechanisms to force ethernet traffic from one domain to be switched in a different (external) domain
US8315260B2 (en) 2009-03-06 2012-11-20 Futurewei Technologies, Inc. Transport multiplexer-mechanisms to force ethernet traffic from one domain to be switched in a different (external) domain
CN102187625A (zh) * 2009-03-06 2011-09-14 华为技术有限公司 传输多工器-强迫来自一个域的以太网流量在不同的(外部)域中进行交换的机制
CN102546840A (zh) * 2010-12-15 2012-07-04 中兴通讯股份有限公司 对虚拟串口和物理串口进行绑定的方法、装置及系统
WO2011144067A3 (fr) * 2011-05-24 2012-04-19 华为技术有限公司 Procédé et appareil de traitement de messages
CN102217245A (zh) * 2011-05-24 2011-10-12 华为技术有限公司 处理报文的方法和装置
US9300592B2 (en) 2014-03-14 2016-03-29 International Business Machines Corporation Physical port sharing in a link aggregation group
US9313139B2 (en) 2014-03-14 2016-04-12 International Business Machines Corporation Physical port sharing in a link aggregation group
US9559940B2 (en) 2014-03-14 2017-01-31 International Business Machines Corporation Take-over of network frame handling in a computing environment
US9565095B2 (en) 2014-03-14 2017-02-07 International Business Machines Corporation Take-over of network frame handling in a computing environment

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