Patent ID: 7243161
Filing Date: 2007-07-10
Classification: H04L

Abstract:
1. A method for operating a network node to forward a packet employing a first addressing scheme through a label switched network employing a second addressing scheme, said method comprising: receiving said first addressing scheme packet; extracting destination address information according to said first addressing scheme from said first addressing scheme packet; based on said destination address information, selecting a label stack including a first level label identifying a label switched path and a second level label distributed by an egress node of said label switched network, said second level label identifying said packet as configured for said first addressing scheme; and forwarding said first addressing scheme packet along with said label stack into said label switched path through said label switched network terminated by said egress node, without encapsulation within a packet incorporating address information specified by said second addressing scheme; wherein said first and second addressing schemes comprise different versions of an IP addressing scheme.