RSS
Twitter
Facebook
* Multiprotocol Label
Switching (MPLS) refers to a mechanism which directs and transfers
data between Wide Area Networks (WANs) nodes with high performance, regardless
of the content of the data.
* MPLS makes it easy to create
"virtual links" between nodes on the network,
regardless of the protocol of
their encapsulated data.
* It is a highly scalable,
data-carrying mechanism.
* In an MPLS network, data
packets are assigned labels.
* Packet-forwarding decisions are
made solely on the contents of this label, without the need to examine the
packet itself.
* This allows one to create
end-to-end circuits across any type of transport medium, using any protocol.
* The primary benefit is to
eliminate dependence on a particular Data Link Layer technology, such as ATM,
frame relay, SONET or Ethernet, and eliminate the need for multiple Layer 2
networks to satisfy different types of traffic.
* MPLS belongs to the family of
packet-switched networks.
* MPLS operates at an OSI Model
layer that is generally considered to lie between traditional definitions of
Layer 2 (Data Link Layer) and Layer 3 (Network Layer),
and thus is often referred to as
a "Layer 2.5" protocol.
* It was designed to provide a
unified data-carrying service for both circuit-based clients and
packet-switching clients which provide a datagram service model.
* It can be used to carry many
different kinds of traffic, including IP packets, as well as native ATM, SONET,
and Ethernet frames.
* MPLS attempts to preserve the
traffic engineering and out-of-band control that made frame relay and ATM
attractive for deploying large-scale networks.
0 comments