Patent ID: 8737270
Filing Date: 2014-05-27
Classification: H04L

Abstract:
1. A method implemented by a network management system for avoiding a count-to-infinity problem in a network, the network having bridges with network interface ports emulated to be connected to a pseudo-root-bridge in an external network, the method comprising: configuring the network interface ports to have a same pseudoRootID; that pseudoRootID being superior to all bridge identifiers associated with the bridges within the network; wherein the pseudoRootID is an identification of the pseudo-root-bridge emulated to be within the external network; configuring the network interface ports to have different pseudoRootPathCosts, wherein the pseudoRootPathCosts is a pseudo path cost set for each of the network interface ports relative to the pseudo-root-bridge; the network interface ports including a first network interface port having a smallest pseudoRootPathCost and a second network interface port having a next smallest pseudoRootPathCost; relative to the external network, both: thereafter, in response to failure of a link between the external network and the first network interface port, setting the second network interface port as forwarding to the external network; wherein the configuring the network interface ports to have different pseudoRootPathCosts comprises: