ANTHONY GEROLD LAUCK
Pilots in Warren, VT
License number
Vermont A1090871
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
PO Box 59, Warren, VT 05674
Professional information
Routing Over Large Clouds
US Patent:
6711152, Mar 23, 2004
Filed:
Jul 6, 1999
Appl. No.:
09/345121
Inventors:
Anthony G Lauck - Warren VT
Kadangode K. Ramakrishnan - Berkeley Heights NJ
Kadangode K. Ramakrishnan - Berkeley Heights NJ
Assignee:
ATT Corp. - New York NY
International Classification:
H04L 1228
US Classification:
370351, 370401
Abstract:
The present invention discloses an efficient architecture for routing in a very large autonomous system where many of the layer routers are attached to a common connection-oriented layer subnetwork, such as an ATM network. In a preferred embodiment of the invention, a permanent topology of routers coupled to the subnetwork is connected by permanent virtual circuits. The routers can further take advantage of both intra-area and inter-area shortcuts through the layer network to improve network performance. The routers pre-calculate shortcuts using information from link state packets broadcast by other routers and store the shortcuts to a given destination in a forwarding table, along with corresponding entries for a next hop along the permanent topology. The present invention allows the network to continue to operate correctly if layer resource limitations preclude the setup of additional shortcuts.
Method For Determining Non-Broadcast Multiple Access (Nbma) Connectivity For Routers Having Multiple Local Nbma Interfaces
US Patent:
7808968, Oct 5, 2010
Filed:
Jan 29, 2004
Appl. No.:
10/767520
Inventors:
Anthony G Lauck - Warren VT, US
Kadangode K. Ramakrishnan - Berkeley Heights NJ, US
Kadangode K. Ramakrishnan - Berkeley Heights NJ, US
Assignee:
AT&T Intellectual Property II, L.P. - Reno NV
International Classification:
H04L 12/28
US Classification:
370351, 370389
Abstract:
The present invention discloses an efficient architecture for routing in a very large autonomous system where many of the layer 3 routers are attached to a common connection-oriented layer 2 subnetwork, such as an ATM network. In a preferred embodiment of the invention, a permanent topology of routers coupled to the subnetwork is connected by permanent virtual circuits. The routers can further take advantage of both intra-area and inter-area shortcuts through the layer 2 network to improve network performance. The routers pre-calculate shortcuts using information from link state packets broadcast by other routers and store the shortcuts to a given destination in a forwarding table, along with corresponding entries for a next hop along the permanent topology. The present invention allows the network to continue to operate correctly if layer 2 resource limitations preclude the setup of additional shortcuts.