公开(公告)号：US20030018820A1

公开(公告)日：2003-01-23

申请号：US10191660

申请日：2002-07-09

Applicant: NORTEL NETWORKS LIMITED

Inventor： Hamid Ould-Brahim ,  Vasile Radoaca ,  Dinesh Mohan ,  Michael Chen

IPC: G06F015/16 ,  H04L012/28 ,  H04L012/56

CPC classification number: H04L45/00 ,  H04L12/4675 ,  H04L45/50 ,  Y02D30/32

Abstract: A network can be organized for providing virtual private network services to customers into two regions. A network core for providing layer 2 transport and an associated number of logical provider edges. Each logical provider edge is partitioned into first and second portions. The first portion provides virtual private network services to customers. The second portion works with the core network to communicate with any other logical provider edge within the network. The first portion designated as the PE-Edge includes a group of functions such as a function for configuring optical Ethernet layer 2 virtual private network service, a function for service labeling, a function for ingress traffic management, and a function for information exchange between local VPN and core VPN. The second portion designated as PE-Core includes a group of functions such as a function for distributing service labels, a function for distributing information on transport tunnels, a function for information exchange between local and core VPN. Within the logical provider edge or Logical PE, the PE-Edge and PE-Core communicate via a layer 2 network.

Abstract translation: 可以组织一个网络，为客户提供虚拟专用网络服务到两个地区。 用于提供第2层传输和相关数量的逻辑提供商边缘的网络核心。 每个逻辑提供商边缘被分割成第一和第二部分。 第一部分为客户提供虚拟专用网络服务。 第二部分与核心网络一起工作，以与网络内的任何其他逻辑提供商边缘进行通信。 指定为PE边缘的第一部分包括一组功能，例如用于配置光以太网层2虚拟专网服务的功能，服务标签功能，入口业务管理功能，以及本地 VPN和核心VPN。 指定为PE-Core的第二部分包括一组功能，例如用于分发服务标签的功能，用于分发传输隧道信息的功能，本地和核心VPN之间的信息交换功能。 在逻辑提供者边缘或逻辑PE中，PE-Edge和PE-Core通过第2层网络进行通信。