Electrical computers and digital processing systems: support – Clock control of data processing system – component – or data...
Reexamination Certificate
2005-10-18
2005-10-18
Cottingham, John R. (Department: 2116)
Electrical computers and digital processing systems: support
Clock control of data processing system, component, or data...
Reexamination Certificate
active
06957358
ABSTRACT:
A system and method are disclosed for dividing a network into clock partitions to limit the overhead created by transmitting clock sources. A clock partition can be implemented through several methods. A first method turns off the clock topology exchange on ports connected to the nodes outside the partition. A second method appends a four-byte partition identifier to network clock distribution protocol (NCDP) messages. A third method uses private network-network interface (PNNI) peer group identification to determine the clock partition group.
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Chellappa Mahesh
Krishnamurthy Chandrasekar
Sundaresan Krishna
Blakey Sokoloff Taylor & Zafman LLP
Cisco Systems Inc.
Cottingham John R.
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