초록 ▼

A method for interconnecting P-NAP customers with P-NAP providers and symmetrically routing packets between a P-NAP customer and a destination within a P-NAP provider's backbone across the P-NAP and that provider's backbone or symmetrically routing packets between a P-NAP customer and a destination

A method for interconnecting P-NAP customers with P-NAP providers and symmetrically routing packets between a P-NAP customer and a destination within a P-NAP provider's backbone across the P-NAP and that provider's backbone or symmetrically routing packets between a P-NAP customer and a destination not currently within a P-NAP provider's backbone across the P-NAP and a pre-defined P-NAP provider's backbone known as the default backbone. The method comprises creating a list of all P-NAP provider AS numbers and a list of all AS numbers which peer at public NAPs but which are not associated with P-NAP providers. For each P-NAP provider, take the union of all provider AS numbers and AS numbers associated with public NAPs and subtracting out AS numbers associated with the current provider. Deny that resulting list of AS numbers on routes as they are received from the current provider to approximate the routes which are deemed to be destined within the current provider's network by tagging these routes with the primary local preference value. For all routes which were denied, attach the secondary local preference value. Set P-NAP provider local preferences causing the P-NAP provider to select direct routing from the P-NAP provider to the P-NAP. Make changes to AS path lengths of routes advertised by the P-NAP to each P-NAP provider to cause providers not directly connected to the P-NAP to use the same preselected P-NAP provider as the P-NAP uses to send to the providers.

대표청구항 ▼

[ What is claimed is:] [1.] A method for symmetrically routing packets among a P-NAP and at least two providers, said providers having customers, comprising the steps of:a) creating router configuration files which use local preferences, causing the P-NAP to route to the P-NAP provider's customers o

[ What is claimed is:] [1.] A method for symmetrically routing packets among a P-NAP and at least two providers, said providers having customers, comprising the steps of:a) creating router configuration files which use local preferences, causing the P-NAP to route to the P-NAP provider's customers over that provider's network, causing the P-NAP to route over a preselected provider's network to customers not connected to a P-NAP provider or customer of provider's connected to more than three P-NAP providers and using P-NAP path length to cause customers of providers not connected to the P-NAP to route over a preselected P-NAP provider;b) setting the P-NAP provider local preferences for causing the P-NAP provider to select direct routing to the P-NAP;c) applying configuration files to a router;d) causing the router to obtain routes from the P-NAP provider; ande) causing the router to apply said router configuration files to said routes.