Related Terms - Zte ZXR10 8900 Series User Manual

ZXR10 8900 Series User Manual (MPLS Volume)
30 Confidential and Proprietary Information of ZTE CORPORATION
Since label switching is used, the address search time in each
hop process is shortened, the transmission time of data on a
network is reduced, and the network speed is improved.
� Improving flexibility and scalability
Since MPLS uses AnyToAny connection, the network flexibility
and scalability are 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 includes the following two aspects: more VPNs
on a network and easy user expansion in the same VPN.
�
Convenience in user's application
The MPLS technology will find wider application in networks of
different carriers, so that an enterprise user can set up a global
VPN conveniently.
� Improving security
MPLS serves as a channel mechanism to implement transpar-
ent message transmission. LSPs of MPLS have high reliability
and security similar to frame relay and ATM Virtual Channel
Connection (VCC).
� Enhancing service integration capability
A network can support the integration of data, audio and video
services.
� QoS guarantee of MPLS
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
�

Related Terms

A BGP/MPLS VPN network system covers the following types of
network devices:
� PE
A Provider Edge (PE) refers to a router connected to a CE in
a client site on a carrier's network. A PE router supports VPN
and labeling function (the labeling function can be provided by
RSVP, LDP or CR-LDP).
� P
Provider (P) router is a router in the core of network, which is
not connected to any router in any customer site, but is a part
of the tunnel in a PE pair. P router supports MPLS LSP or LDP,
but does not need to support VPN.
� CE
Customer Edge (CE) router, which connects to the PE router
on the network, is on the network of ISP. A CE router must
connect with a PE router.