Patent ID: 8009591
Filing Date: 2011-08-30
Classification: H04L

Abstract:
1. A method comprising: receiving on a first communication link at a local router all routing information at a certain level of detail for each router of a plurality of routers communicating in a first flooding domain; determining a measure of distance from a particular router in the first flooding domain to the local router; determining whether the measure of distance exceeds a threshold, wherein the distance reflects a number of hops between the local router and the particular router in the first flooding domain, wherein the distance is provided in a field of an update message exchanged between the local router and the particular router during a flooding event in the first flooding domain, and wherein the local router gives preference to a remote router that exceeds the threshold and for which the local router has the certain level of detail; and if it is determined that the measure of distance exceeds the threshold, then: