Anthony Gallo

US Patent:

6449576, Sep 10, 2002

Filed:

Mar 29, 2000

Appl. No.:

09/538247

Inventors:

Brian Mitchell Bass - Apex NC
Jean Louis Calvignac - Cary NC
Anthony Matteo Gallo - Apex NC
Marco C. Heddes - Raleigh NC
Michael Steven Siegel - Raleigh NC
Fabrice Jean Verplanken - La Gaude, FR
Chad Everett Winemiller - Cary NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G01R 2728

US Classification:

702117, 324751, 324763, 375221, 406152, 714 30, 714718, 714726, 714731, 714734, 716 4, 716 17

Abstract:

A method and system for systematically accessing and monitoring operating parameter signals within an IC device. A probe configuration logic selects a subset of signals from among a set of available signals within a physical or logical subdivision of the IC device. Signal access logic selectively provides physical or logical access from the selected subset of signals within the physical or logical subdivision of the IC device to a probe sensor, such that IC device operations may be flexibly and comprehensively monitored. A local mode selector provides remote access to the selected subset of signals at an input/output (I/O) data interface. Data packaging logic in communication with the probe sensor permits port mirroring of the I/O data interface.

US Patent:

6484171, Nov 19, 2002

Filed:

Mar 31, 2000

Appl. No.:

09/540333

Inventors:

Anthony Matteo Gallo - Apex NC
Clark Debs Jeffries - Durham NC
Colin Beaton Verrilli - Apex NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1730

US Classification:

707 7, 707102, 7071041

Abstract:

This process accepts rule domination declarations and subjects rules to a computer program which either finds a type of administrative error (cyclic domination) or assigns a priority number to each rule so that any two rules which intersect (some key fits both rules) have necessarily different priority numbers. In the case that priority numbers are assigned, the process goes on to check for a second type of administrative error, namely inclusion of a first rule in a second (every key which fits the first rule also fits the second), and with the second having higher priority (so that the first is never referenced). If neither error occurs, then the number of different priority numbers is minimized. Every key when tested by such a rule set with neither error must fit either no rules at all or must fit exactly one rule with highest priority. In the latter case, the action of the unambiguously determined rule can then be applied to the packet represented by the key.

US Patent:

6654372, Nov 25, 2003

Filed:

Apr 5, 2000

Appl. No.:

09/543144

Inventors:

Francis Arts - Turnhout, BE
Olivier Didier Duroyon - Mc Lean VA
Anthony Matteo Gallo - Apex NC
Brahmanand Kumar Gorti - Cary NC
Donald Newland Jones - Apex NC
Natarajan Vaidhyanathan - Durham NC
Colin Beaton Verrilli - Apex NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 1256

US Classification:

370392, 37039552

Abstract:

A controllable mechanism for by-passing Layer (L ) classification is based on the insertion into a set of MAC rules in SA MAC lookup means a set of Layer (L ) Skip Classification Flags. Routing is accomplished by selecting which rule to apply to the packet and reading the state of the corresponding L Skip Classification Flag. In response to a first state of said corresponding L Skip Classification Flag, performing an L classification followed by a routing of the data packet. In response to a second state of said corresponding L Skip Classification Flag, reading the state of a Global Classification Flag. In response to a first state of said Global Classification Flag, performing an L classification followed by a routing of said data packet. In response to a second state of said Global Classification Flag performing a routing of the data packet. The L Skip option change does not use the option change of reading the L Skip Classification Flag from the port table, whereas the second embodiment uses this option.

US Patent:

6658481, Dec 2, 2003

Filed:

Apr 6, 2000

Appl. No.:

09/544312

Inventors:

Claude Basso - Raleigh NC
Anthony Matteo Gallo - Apex NC
Natarajan Vaidhyanathan - Durham NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 15173

US Classification:

709243, 709238, 709242, 370351

Abstract:

In a network processor-based device, there is provided a single routing table for network routers and an efficient routing algorithm implemented by the routing device. The routing table includes packet forwarding information including a subnet address associated with a destination address location, an ISO layer three ( ) network protocol address, e. g. , IP address, of a router interface that can route packets to the subnet address, and an identifier indicating whether that router is an exit BGP router that may or may not be directly attached to the packet forwarding router. A table look-up mechanism is provided to determine next hop information and determine associated BGP status of the next hop. At such time it is determined that a router is not a BGP router (i. e. , is directly attached to the forwarding router), the packet will be transmitted to that router.

US Patent:

6671280, Dec 30, 2003

Filed:

Mar 29, 2000

Appl. No.:

09/535794

Inventors:

Brian Mitchell Bass - Apex NC
Jean Louis Calvignac - Cary NC
Anthony Matteo Gallo - Apex NC
Marco C. Heddes - Raleigh NC
Michael Steven Siegel - Raleigh NC
Fabrice Jean Verplanken - La Gaude, FR

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 1256

US Classification:

37039553, 370360, 370401, 370411, 370422, 709236

Abstract:

A method for integrating Asynchronous Transfer Mode (ATM) and frame-based traffic flows within a telecommunications network is disclosed. The telecommunications network includes a network processor having upside processing means for delivering an incoming flow from the telecommunications network to a switch and downside processing means for delivering outgoing network traffic from the switch to the telecommunications network. The incoming flow is initially received at the upside processing means as a frame-based flow. The incoming flow may be characterized as belonging to a group having frame-based flows and ATM flows. In response to the receipt of the incoming flow, the incoming flow is determined if it is destined for a legacy, ATM-only device. The incoming flow is then processed according to the determined routing requirements and the incoming flow characterization before delivering the incoming flow to the switch.

US Patent:

6700883, Mar 2, 2004

Filed:

Apr 5, 2000

Appl. No.:

09/543145

Inventors:

Anthony Matteo Gallo - Apex NC
Brahmanand Kumar Gorti - Cary NC
Donald Newland Jones - Apex NC
Natarajan Vaidhyanathan - Durham NC
Colin Beaton Verrilli - Apex NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 1256

US Classification:

370351, 709238

Abstract:

A controllable mechanism for by-passing Layer 4 (L4) classification is based on the insertion into a set of Layer 3 (L3) rules in an L3 lookup tree set of Layer 4 (L4) Classification Required Flags. The state of the L4 classification flag is set by comparing the L4 classification rule to an IP (Internet Protocol) lookup rule. Routing is accomplished by selecting which rule to apply to the data packet and reading the state of the corresponding L4 Classification Required Flag. In response to a first state of the corresponding L4 Classification Required Flag, an L4 classification is performed followed by a routing of the data packet. In response to a second state of the corresponding L4 Classification Required Flag performing a routing of said data packet. In a second embodiment, the method inserts into a set of L3 rules in L3 lookup means a set L4 Classification Required Flags and Global Flags. A first state of the L4 Classification Required Flag is set when a new rule is added to L4 classification means, the new rule being correlatable to a single entry in L3 lookup means.

US Patent:

6721800, Apr 13, 2004

Filed:

Apr 10, 2000

Appl. No.:

09/546702

Inventors:

Claude Basso - Raleigh NC
Anthony Matteo Gallo - Apex NC
Natarajan Vaidhyanathan - Durham NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 15173

US Classification:

709239, 709242

Abstract:

A system and method for providing the ability for a network processor to select from multiple next hop options for a single forwarding entry and provide the ability to weight the probability of which next hop will be chosen.

US Patent:

6738376, May 18, 2004

Filed:

Apr 7, 2000

Appl. No.:

09/543676

Inventors:

Richard John Blasiak - Chapel Hill NC
Gregory Scott Burgin - Durham NC
Anthony Matteo Gallo - Apex NC
Colin Beaton Verrilli - Apex NC
Gail Irene Woodland - Chapel Hill NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 1228

US Classification:

370390, 370397, 370399, 370401, 370408, 370409

Abstract:

A system for controlling multicast traffic in a multiprocessing system is disclosed. The multiprocessing system includes a general-purpose processor, a plurality of network processors and a switch fabric. The system comprises a multicast identifier (MID) manager to manage a distributed database of MIDs. The distributed database includes at least one compound MID. The at least one compound MID structure further comprises a plurality of MIDs representing at least two multicast groups. The system also includes a MID processor which traverses the at least one compound MID and resolves it into its associated simple MIDs. Accordingly, the present invention provides for a system and method for efficiently controlling multicast transmissions when different types of multicast groups are to receive the multicast transmissions. In this system and method a new type of multicast identifier (MID) is provided, a compound MID. The compound MID is a single MID but references multiple MIDs.