The goals of this MPLS-TE document are to explain the differences between a network
Nowadays, the Internet is the most important network in the world. A lot of people use
Internet to communicate with other people, to download files, for watching TV and
many other things.
These different applications cause some problems with the communications. For
example, voice has some requirements, like jitter and delay, which does not exist in
other types of communication, like ftp. Because of these reasons, new networks should
consider the different applications when routing a packet. This is the main reason for
MPLS Traffic Engineering.
The goals of this document are to see and explain the differences between a network
with MPLS-TE and a traditional network; analyze the different MPLS-TE protocols,
and see the impact of QoS in a congested network.
MPLS Traffic Engineering is composed of different protocols.
Firstly, there are the signalling protocols. Their main function is network labels
distribution. The most important signalling protocols are RSVP-TE and CR-LDP. The
main differences between them are the states. CR-LDP maintains a full adjacency
between the different routers and RSVP-TE periodically refreshes the state of the path.
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