Mpls Configuration; Mpls Overview; Mpls Function - Zte ZXR10 8900 Series User Manual

2
C h a p t e r

MPLS Configuration

Table of Contents
MPLS Overview .................................................................. 3
MPLS Terms ....................................................................... 7
LSP Establishment .............................................................. 9
Label Control and Management ...........................................13
Configuring MPLS ..............................................................18
MPLS Configuration Examples .............................................21
MPLS Maintenance and Diagnosis ........................................25

MPLS Overview

MPLS Function

With the rapid development of network scale and user number,
people pay more attention to the problem that how to extend ser-
vice further on the network and how to improve the quality of
services. As the IP protocol is a connectionless protocol, it is hard
to provide enough throughputs and time delay according to the re-
quirements. For IP protocol, it just uses best-effort mechanism to
satisfy the users. Without other measures to improve the current
network conditions, it is hard to develop new services greatly.
Among existing network technologies, ATM has advantages for
quality of services. However, the high cost of ATM network makes
it hard to implement. In addition, although ATM switches are
widely used as backbone nodes in networks, services that take
ATM cells to desktop develop very slowly.
IP and ATM technologies meet difficulties with respective field, and
they need each other to have further development. There is in-
evitability to combine the two technologies. Therefore, Multi-Pro-
tocol Label Switching (MPLS) technology comes into being. It in-
tegrates the advantages of switching technology in network core
and IP routing technology in network edge.
MPLS uses label switching, so routers only need to judge the labels
when they forward packets. MPLS supports protocols in network
layer (such as IPv6, IPX and IP) as well as protocols in data link
layer (such as ATM, FR and PPP).
Confidential and Proprietary Information of ZTE CORPORATION 3