Vll Configuration - Huawei quidway s7700 Configuration Manual

Quidway S7700 Smart Routing Switch
Configuration Guide - VPN
About This Chapter
This chapter describes how to configure a VLL to transparently transmit data on the MPLS
network.
5.1 Introduction to VLL
A Virtual Leased Line (VLL) emulates the traditional leased line on the IP network, and provides
asymmetric and low-cost digital data network (DDN) services. For users on both ends of a VLL,
the VLL is similar to the traditional leased line. As a point-to-point virtual private line
technology, VLL supports nearly all link layer protocols.
5.2 VLL Features Supported by the S7700
VLL can be implemented in four modes, namely, Circuit Cross Connect (CCC), Switched
Virtual Circuit (SVC), Kompella, and Martini. VLL also supports inter-Autonomous System
(inter-AS) applications.
5.3 Configuring CCC VLL
This section describes how to configure a CCC VLL. The CCC VLL transmits data by adding
a one-layer label to the data. Being configured by the administrator, the CCC VLL is applicable
to an MPLS network of the small size and simple topology. The CCC VLL needs no signaling
negotiation and control packet exchange, and thus consumes fewer resources and is easy to
understand. Nevertheless, the CCC VLL has poor scalability and is inconvenient to maintain.
5.4 Configuring the SVC VLL
This section describes how to configure an SVC VLL. After the SVC VLL is configured, L2VPN
information can be transmitted without the usage of any signaling protocol.
5.5 Configuring Martini VLL
This section describes how to configure a Martini VLL. To configure the Martini VLL, you need
to establish the point-to-point link to implement L2VPN, and use the Label Distribution Protocol
(LDP) to transmit Layer 2 information and VC labels.
5.6 Configuring Kompella VLL
This section describes how to configure a Kompella VLL. To configure the Kompella VLL, you
need to establish the Kompella VLL on the MPLS network in end-to-end (CE-to-CE) mode, and
use the Border Gateway Protocol (BGP) to transmit Layer 2 information and VC labels.
5.7 Configuring Inter-AS Martini VLL
Issue 01 (2011-07-15)
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