CONNECTION ROUTING BASED ON LINK UTILIZATION

• US 20090034532A1
• Filed: 09/30/2008
• Published: 02/05/2009
• Est. Priority Date: 07/09/2003
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: HSU, Shawn, Palai, Mana, Chen, Rachel Yiwen
• Granted Patent: US 7,957,365 B2
• Time in Patent Office: Days
• US Class Current: 370/395.100
• CPC Class Codes: H04L 12/5601 Transfer mode dependent, e.g. ATM
• CPC Class Codes: H04L 2012/562 Routing
• CPC Class Codes: H04L 2012/5629 Admission control
• CPC Class Codes: H04L 2012/563 Signalling, e.g. protocols, reference model
• CPC Class Codes: H04L 45/125 based on throughput or bandwidth

Abstract

A method and system for connection routing based on link utilization. A link utilization limit is accessed at a node of a network. The link utilization limit is compared to a utilization of a link coupled to the node. If the utilization of the link is greater than the link utilization limit, then the link is excluded from a virtual circuit.

Claims

1. A method comprising:

generating a signaling message in a local sending node of a local peer group to initiate routing of a virtual circuit connection through a remote peer group that includes a receiving node;

generating an information element having a predefined format, the information element representing a link utilization threshold value; and

formatting the generated signaling message to contain the information element, the presence of the information element in the predefined format to trigger the remote receiving node to use the link utilization threshold value to determine whether a remote peer group link utilization exceeds the link utilization threshold value based on synchronized remote peer group routing information.