Multiplex communications – Network configuration determination – Using a particular learning algorithm or technique
Reexamination Certificate
2005-09-29
2010-10-26
Ton, Dang T (Department: 2475)
Multiplex communications
Network configuration determination
Using a particular learning algorithm or technique
C370S395530, C370S401000, C370S408000, C709S252000
Reexamination Certificate
active
07821972
ABSTRACT:
A grand computer network is formed from layer 2 (L2) networking technology in which groups of Provider L2 bridges are organized into formations, and different formations are interconnected via network-network interface (NNI) links. Customer sites are coupled to the formations. Customers identify their traffic, e.g., frames, by labeling or tagging it with a Customer Virtual Local Area Network (VLAN) Identifier (C-VLAN ID) or Customer Service Instance (CSI). Within the formations, the C-VLAN ID is mapped to a Service VLAN ID (S-VLAN ID) or Provider Service Instance (PSI), and the S-VLAN ID is appended to the customer traffic. The PSIs are hierarchical, such that each PSI belongs to at most one other “outer” or higher-level PSI, but may itself own any number of “inner” or lower-level PSIs. As a given frame traverses through the different formations of the Grand Network via the NNI links, the frame acquires an encapsulation, sheds an encapsulation or exchanges its current encapsulation for a different one. Bridges within the formations run a Hierarchical Spanning Tree Program (HSTP) to block intra-formation loops, and a GARP L2-NNI Registration Protocol (GLRP) to block inter-formation loops.
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Elangovan Anusankar
Finn Norman W.
Cesari and McKenna LLP
Cisco Technology Inc.
Kavleski Ryan C
Ton Dang T
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