Patent ID: 7426186
Filing Date: 2008-09-16
Classification: H04L

Abstract:
1. A method for determining a data path in a network which transmits data packets between IP routers via an IP protocol over a reconfigurable core network, each of said IP routers having at least one network interface for connecting to said core network, at least some of said network interfaces having an associated IP-subnet, said method comprising the steps of: receiving a request to provision a data path from a first IP router to a second IP router; and determining a data path from said first IP router to said second IP router taking into account the IP-subnets of network interfaces of IP routers included in said path; wherein said step of determining a data path comprises determining the data path utilizing a shortest path algorithm in which a link cost assigned to a given link of a candidate path includes a parameter indicative of a cost of changing an IP-subnet assignment of the given link.