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RAM based directory layer for a flash file system
A flash file system for use with flash cards and internetwork operating system software is provided. Absolute path names are stored in the name field of existing...
Method and apparatus of testing modems in a networking environment
A method and apparatus for use in a digital system having a plurality of modem devices from receiving de-multiplexed digital channels of information through a...
Intrusion detection system and method having dynamically loaded signatures
An intrusion detection system and method for detecting unauthorized or malicious use of network resources includes an intrusion detection analysis engine that...
System for automated testing of perceptual distortion of prompts from voice
A Perceptual Speech Distortion Metric (PSDM) generates perceptual distortion values for voice prompts received from a voice response system by comparing the...
Polling response selection using request monitoring in a network switch
A switch node includes arbiter logic configured to gather global information regarding switching requests within the switch node and to control switching of one...
Dispersion compensation in optical fibre transmission
An optical transmission apparatus for transmission of optical signals at an optical wavelength of about 1550 nanometers. The optical transmission apparatus...
Flip chip and packaged memory module
A multi-chip, module (MCM) having one or more high value chips such as ASICs, CPUs, DSPs or the like attached to the MCM substrate via a direct attach technology...
Method and system for testing a layer-2 tunnel in a data communication
A method and system for testing a Layer 2 tunnel in a data communication network including a network device and a network manager are described. According to the...
Port aggregation load balancing
Provided are methods, apparatuses and systems for balancing the load of data transmissions through a port aggregation. The methods and apparatuses of the present...
Hierarchical label switching across multiple OSPF areas
In a communications-networking autonomous system consisting of an OSPF domain, autonomous-system border routers (I-ASBR and E-ASBR) cause exchange of...
Method and apparatus for transparently proxying a connection
A system and method are disclosed for transparently proxying a connection to a protected machine. The method includes monitoring a communication packet on a...
Use of logical addresses to implement module redundancy
An apparatus is described to implement a module redundant system using logical addresses. The apparatus may comprise a bus on which a plurality of server modules...
Validating connections to a network system
A mechanism for authenticating multiple connections to a network server is disclosed. A client establishes a first connection to the server. In establishing the...
Method and apparatus for a dual connection communication session
A method and apparatus establishes a connection for a communication session between two remote devices, then negotiates an additional connection. One of the...
Coordinated extendable system for logging information from distributed
The present invention is directed to a system and method for centrally coordinating, collecting and storing error, trace, audit and other information in a...
Service state administration for a communications apparatus
A communications system includes a switch having communications resources such as cards containing multiple devices, each containing multiple ports. The switch...
Use of enhanced ethernet link--loop packets to automate configuration of
intelligent linecards attached to a router
A technique for configuring address information automatically for intelligent port cards such as in a cell multiplexer, router, or other internetwork device. A...
System and method for determining the environmental configuration of
A system and method determines the environmental configuration of telecommunications equipment having interchangeable components to provide an alarm if an...
EMI cable passthrough shield
An EMI cable passthrough shield for a cable opening in an electronic system housing. The EMI cable passthrough shield includes portions made of an electrically...
Method and apparatus for configuration in multi processing engine computer
A high reliability computer system includes a first and a second processing engine (PE), circuitry for switching control of the system from the first PE...
Method and apparatus for policy-based management of quality of service
treatments of network data traffic flows...
A method and apparatus for policy-based management of quality of service treatments of network data traffic flows by integrating policies with application...
Proxy on demand
In a first aspect of the present invention, a Wholesaler dynamically identifies one of a plurality of AAA services at a remote domain to route an access request...
Methods and apparatus for providing mobility of a node that does not
Methods and apparatus for enabling a node that does not support Mobile IP to roam from a first Foreign Agent to a second Foreign Agent are disclosed. In a...
MPEG frame add/drop multiplexer with bandwidth controller
An add/drop multiplexer in a cable network multiplexes data from different sources together on a common cable television channel without corrupting MPEG time...
Distributed conferencing system utilizing data networks
A distributed packet-based audio conferencing system, method for packet-based audio conferencing, and a transceiver for use in such conferencing are disclosed....
Hop by hop quality of service measurement system
Loopback interfaces are put into routers in a packet switched network. When an end to end Quality of Service (QoS) path is not performing adequately, the delay...
System for providing cell bus management in a switch platform including a
write port cell count in each of a...
A method and apparatus for providing cell bus management in a switch platform are provided. Each unidirectional FIFO buffer of a cell bus controller outputs a...
Local authentication of a client at a network device
A method and apparatus that provide network access control are disclosed. In one embodiment, a network device is configured to intercept network traffic...
Method and apparatus of storing policies for policy-based management of
quality of service treatments of...
A method and apparatus for storing policies for use in policy-based management of quality of service treatments of network data traffic flows are described. The...
MAC protocol employing multiple data rates
Method and apparatus for combining high data rate traffic and low data rate traffic on a common transmission medium while maximizing efficient use of available...
Router with class of service mapping
A router includes a classifier that classifies packets assigned to 2.sup.n-m classes of service into 2.sup.n classes of service that are supported by the router....
Mixed topology data switching system
Methods and apparatus for enabling communication between a source network device and one or more destination network devices are disclosed. A system enabling...
Shared communications network employing virtual-private-network identifiers
A service provider's routers (PE1, P1, P2, PE2) provide connections between and share routing information with routers (CE1, CE2) of a customer virtual private...
Cable detect and EMI reduction apparatus and method
A repeater, useable for connecting switches in a data communication network, is provided in a distributed and/or modular fashion. The repeater includes a...
System and method for establishing processor redundancy
The present invention relates to providing processor redundancy in a system such as a router. According to an embodiment of the present invention, in a system...
Forced network portal
A system manages communications between a user and a network by receiving a user request for access to a network file during a user network connection session...
System and method for crash handling on redundant systems
The present invention relates to providing processor redundancy in a system such as a router. According to an embodiment of the present invention, when a primary...
Network switch with hash table look up
An improved look up mechanism for accessing a RAM to obtain forwarding information for data frames being transported among ports of a high-performance switch is...
Communicating packetized data over a channel using a dual leaky bucket
priority scheme for assigning priorities...
A priority scheme is based on an amount of preallocated bandwidth unused by channel unit ports. A first water level in a first bucket is associated with an...
Transparent optical self-healing-ring communication network
An optical self-healing-ring communication network is described which includes: a first optical communication line, forming a closed optical path; at least two...
Method and apparatus for performing periodic ranging for cable modems
Disclosed are a method apparatus for performing periodic ranging with a cable modem. It is determined whether an actual power level of the cable modem requires...
Apparatus and methods for controlling restart conditions of a faulted
A system including a method and apparatus are provided for controlling fault conditions in a computer controlled device such as a data communications device. The...
Method and system for processing fragments and their out-of-order delivery
during address translation
A set of packetized fragments in which only a portion of the fragments carry translation information for the set of fragments is translated by storing in a...
Method and apparatus for robust call routing
Apparatus and method for performing a recoverable routing of calls using an automatic call distributor to avoid loss of calls at busy agent terminals. Switching...
Spatio-temporal processing for interference handling
A space-time signal processing system with advantageously reduced complexity. The system may take advantage of multiple transmitter antenna elements and/or...
Method and apparatus for communication between network devices operating at
A method for communicating information in a communication network having a first high speed device, a second high speed device, and a low speed device includes...
Content-aware switching of network packets
A content-aware flow switch intercepts a client content request in an IP network, and transparently directs the content request to a best-fit server. The...
Method and apparatus for managing packets using a real-time feedback signal
A technique manages packets in a data communications device having a memory using a real-time feedback signal. The technique involves transmitting an initial set...
ATM path cell scheduling for constant and variable bit rate traffic
A system schedules both CBR and non-CBR traffic on one or more virtual paths in accordance with associated aggregate peak cell rates by including in a stream of...