((MPLS of Enterprise In-depth Technology (8 articles supplementary information)) /zt/9056~~~Network Road Blog Collection ccieh3c~~In the early days of the Internet, with the popularization of the situation, the hardware technology was limited at that time, the choice was The longest matching algorithm and the recursive query method posed a difficult problem for the development of the backbone network at that time. In this situation, ATM stood out. ATM uses fixed-length labels, and only needs to protect the label table smaller than the routing table. Provide more efficient forwarding function and high bandwidth, QoS function. However, because the ATM mechanism is too messy and the equipment is very expensive, it brings great difficulties to the debugging personnel. Under this situation, many manufacturers began to develop and research the technology to link the advantages of IP and ATM. The first company named IPSwitching was launched by a small company of IPSilon in the United States. It combines the advantages of ATM and IP very well. The Cisco (Tagswitch), IBM (ARIS), 3COM (FashtIP) each have launched their own technology, in order to unify the standard IETF launched a standardized definition, it is MPLS.)
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