Communications network

Details Communications network Communications network

2005-04-26

2005-04-26

Geckil, Mehmet B. (Department: 2142)

Electrical computers and digital processing systems: multicomput

Computer-to-computer data routing

C709S245000, C370S392000

Reexamination Certificate

active

06886043

ABSTRACT:
In a label switch communications network, a third level of label is employed in conjunction with a dynamic multiplex constraint-based routed label switched path (CR-LSP) in order to achieve implicit switching at nodes within the network. Implicit switching occurs when a switching function takes place at a node without the need for any control function being required at that node. A three-layer label stack provided at the edge of the network achieves end-to-end connection oriented behaviour with guaranteed Quality of Service. The use of the three-layer label stack concentrates the control of the network to the two edges of the network and a single central switching stage of the network.

REFERENCES:
patent: 6205488 (2001-03-01), Casey et al.
patent: 6408001 (2002-06-01), Chuah et al.
patent: 6466985 (2002-10-01), Goyal et al.
patent: 6477166 (2002-11-01), Sanzi et al.
XP-002115225—IETF Multiprotocol Label Switching (MPLS) Architecture—Francois Le Faucheur. IEEE International Conference on ATM (Jun. 22, 1998).
XP-000875017—Internet QoS: A Big Picture IEEE Network Mar./Apr. 1999.
XP-000752861—Evolution of Multiprotocol Label Switching—Viswanathan et al. IEEE Communications Magazine (May 1998).

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