ZXR10 GER (V2.6.03) General Excellent Router User Manual Volume-I
288
Confidential and Proprietary Information of ZTE CORPORATION
Intranet, greatly improve the operation and management
flexibility of user’s networks, and meanwhile can meet the
requirements of users for secure, realtime, broadband and
convenient information transmission.
Advantages of MPLS in IP-based
Network
In an IP-based network, MPLS has following advantages:
MPLS simplifies the integration technology of ATM and IP,
efficiently combines the L2 and L3 technologies, reduces costs
and protects user’s investment at earlier stages.
Since label switching is used on the network, user’s LANs at
different points can use repeated IP addresses to improve the
utilization of IP resources.
When label switching is used, address search time in each hop
process is shortened. Transmission time of data on a network is
reduced, and network speed is improved.
Since MPLS uses AnyToAny connection, the network flexibility
and scalability is improved. With respect to flexibility, special
control policy can be customized to meet special requirements of
different users and implement value-added services. The
scalability covers the following two aspects:
More VPNs on a network
Easy user expansion in the same VPN.
MPLS technology will find wider application in networks of
different carriers, so that an enterprise user can set up a global
VPN conveniently.
MPLS serves as a channel mechanism to implement transparent
packet transmission. LSPs of MPLS have high reliability and
security similar to frame relay and ATMVCC (Virtual Channel
Connection).
A network can support the integration of data, audio and video
services.
Related standards and drafts drawn by IETF for BGP/MPLS VPN:
RFC 2547, BGP/MPLS VPN
Draft RFC 2547bis, BGP/MPLS VPN
RFC 2283, multi-protocol extension BGP4
Reduced Cost
Improved
Resource
Utilization
Improve
Network Speed
Improve
Flexibility and
Scalability
User’s
Application
Convienance
Improve
security
Enhance
service
QoS ensurence
of MPLS
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