Patent ID: 7305489
Filing Date: 2007-12-04
Classification: H04L

Abstract:
1. In a network access server, a method for allocating network addresses comprising: providing an address pool comprising a plurality of network addresses; dividing the address pool into a plurality of address sub-pools, each of the sub-pools comprising a unique subset of the network addresses of the address pool, wherein each of the sub-pools is available for use by any one of a plurality of routing devices of the network access server; receiving a request to assign a first network address to a first user; allocating a first address sub-pool of the plurality of address sub-pools to a first routing device of the plurality of routing devices; transmitting a first message to the other routing devices of the plurality of routing devices to indicate that the first address sub-pool has been allocated to the first routing device; assigning the first network address to the first user from the first address sub-pool; and advertising an aggregate route for the first address sub-pool over a network.