Quidway NetEngine20/20E
Configuration Guide - Basic Configurations
1 Product Overview
Issue 05 (2010-01-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1-15
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Carry out MPLS VPN applications, interworking between various types of VPNs, and
such networking applications as traffic engineering, QoS and Diff-Serv.
The MPLS of the NE20/20E supports Layer 3 and Layer 2 protocols such as IP, FR, ATM and
Ethernet. The MPLS provides an OAM mechanism without dependence on the upper or lower
layers in the TCP-IP protocol suite.
The IP Telecommunication Network (IPTN)IPTN network supported by the NE20/20E is
constructed on the basis of IP network technologies. IPTN can meet the end-to-end QoS,
reduce the investment of carriers and create value-added telecommunication network
solutions.
1.3.11 VPN Services
IP VPN
The Generic Routing Encapsulation (GRE) protocol is used to encapsulate packets of certain
network layer protocols (such as IP and IPX packets) so that these encapsulated packets can
be transmitted in the network running another network layer protocol (such as IP). As a tunnel
protocol, GRE uses the tunnel technology in the protocol layer.
GRE can be used to:
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Transmit data of local multi-protocol network through the single-protocol backbone
network.
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Extend the network that is limited by hops such as IPX network.
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Connect the separated subnets for a VPN.
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Access MPLS VPN through GRE tunnels.
L2VPN
The NE20/20E provides Layer 2 VPN services based on MPLS. It supports VPLS, Martini
MPLS L2VPN, Kompella MPLS L2VPN, CCC MPLS L2VPN, and SVC MPLS L2VPN to
carry VLL services, and supports PWE3.
MPLS/BGP L3VPN
The NE20/20E implements MPLS/BGP L3VPN and provides carriers with end-to-end VPN
solutions as follows:
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Carrier's carrier
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Inter-AS VPN
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HoVPN
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RRVPN
1.3.12 QoS
Traffic Policing
The NE20/20E supports such parameters as the committed rate, the peak rate, the committed
burst size, and maximum burst size for every kind of flow according to the Service Level
Agreements (SLA). To the traffic beyond the SLA, the router can pass or drop the flow.