| steamname: High Resolution Hero | steam3ID: [U] AB AB Feb Pag/D, Jun. These L2 VPNs are created using a collection of one or more point-to-point . 1. Introduction. The IEEE has defined Pag Connectivity Fault Management [Pag] IEEE Draft Pag/D8 “Virtual Bridge Local Area. IEEE Pag/D8, Draft Standard for Local and Metropolitan Area What is claimed is: 1. A method, performed by a first network device, the.
Year of fee payment: The present invention relates to telecommunication networks.
The following abbreviations are utilized throughout this document:. This achievement stems from the intrinsic characteristics of the technology: However, metro and backbone networks have quite different requirements than enterprise LANs. Consequently, Ethernet technology requires specific enhancements if it is to fulfill these carrier-grade requirements.
Virtual Bridged Local Area Networks. Provider Backbone Bridges—Traffic Engineering, May proposes a simple, connection-oriented solution. PBB-TE maintains the inherent advantages of Ethernet, while addressing the deficiencies of Ethernet as a carrier-class packet transport protocol. It builds upon the concepts brought forth in the amendments to IEEE Provider Backbone Bridges, October Connectivity Fault Management CFM is a very important component in enhancing Ethernet with carrier-grade functionality.
IEEE has specified protocols, procedures, and managed objects to support connectivity fault management.
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Connectivity Fault Management, June These protocols, procedures, and managed objects enable discovery and verification of the path, through bridges, and LANs taken for frames addressed to and from specified network users as well as detection of a connectivity fault and isolation of the fault to a specific bridge or LAN.
The original CFM protocol, however, was designed to monitor best-effort Ethernet services. Enhancements to the original CFM specification are required in order to generalize its original mechanisms in a way that they are applicable to PBB-TE services. In the following, the essential features of the invention will be described in detail by dd8 preferred embodiments, with reference to the attached figures in which:.
PBB-TE replaces the MSTP control plane with either a management plane or an external control plane and then populates the bridge filtering tables of the component In one embodiment, each such MA is configured by the same 1ga of parameters that are required to identify the corresponding PBB-TE service i. Independent ESPs may be identified by the same VID value if some other parameter in their identifying 3-tuple is different.
Enhancements to the MP’s architecture are required in order to be able to correctly distinguish such MAs.
If no MEP with those parameters is configured on the receiving port, a cross-connect defect is raised. Three basic CFM protocols are enhanced in the present invention.
Specific details of the enhancements are described below. A change is required in the procedure responsible for constructing and transmitting a CCM. All other processes remain the same. The xmitLBR in The xmitLBM in All the other Linktrace process remain the same.
It has thus been shown that the present invention provides a consistent way of identifying PBB-TE point-to-point and point-to-multipoint services. 11 invention also provides enhancements to the basic CFM protocols: Although preferred embodiments of the present invention have been illustrated in the accompanying drawings and described in the foregoing Detailed Description, it is understood that the invention is not limited to the embodiments disclosed, but is capable of numerous rearrangements, modifications, and substitutions without departing from the scope of the invention.
The specification contemplates any all modifications that fall within the scope of the invention defined by the following claims:. A method of monitoring traffic within a network, the method comprising: The method of claim 1wherein identifying an egress port comprises querying a database associated with the first node using the destination address s8 and the VID parameter of the input linktrace message as parameters for a lookup operation.
The method of claim 1wherein forwarding the linktrace message comprises forwarding the input linktrace message without changing a source address parameter of the input linktrace message.
The method of claim 1wherein forwarding the linktrace message comprises setting a drop eligible parameter of the forwarded linktrace message to false. The method of claim 1further comprising: The method of claim 5wherein constructing the linktrace reply message based on the input linktrace message comprises: The method of claim 8wherein transmitting the constructed linktrace message to a second node comprises: The method of claim 9wherein receiving a linktrace reply from the intermediate node in response to the linktrace message comprises receiving a linktrace reply that includes: An apparatus for monitoring traffic within a network, the apparatus comprising: The apparatus of claim 12wherein the linktrace responder is configured to identify an egress port by querying a database associated with the first bridge using the destination address parameter and the VID parameter of the input linktrace message as parameters for a lookup operation.
The apparatus of claim 12wherein the linktrace responder is configured to forward the linktrace message by forwarding the input linktrace message without changing a source address parameter of the input linktrace message. The apparatus of claim 12wherein the linktrace responder is configured to forward the linktrace message by setting a drop eligible parameter of the forwarded linktrace message to false.
The apparatus of claim 12wherein the first bridge is further configured to: The apparatus of claim 16wherein the first bridge is configured to construct the linktrace reply message based on the input linktrace message by: The apparatus of claim 19wherein the linktrace initiator is configured to transmit the constructed linktrace message to a second bridge by: The apparatus of claim 20wherein the linktrace initiator is configured to receive a linktrace reply from the intermediate node in response to the linktrace message by receiving a linktrace reply that includes: Connectivity fault management in a provider backbone bridge traffic engineering pbb-te domain.
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Operations, administration, and maintenance data packet and related testing methods. Routing frames in a shortest path computer network for a multi-homed legacy bridge node. M Year of fee payment: