With IGP shortest-path routing and ECMPs, the problem cannot be solved. Network administrators can use ERs to control traffic trajectory precisely. Backup LSPs can be used to provide graceful degradation if a router or link fails. Problems that were difficult to solve before, can now be solved easily. More customers can be added to the network without affecting network performance.
Revenue is, therefore, increased.
The network is, therefore, more adaptive and robust, and management complexity and associated costs are reduced. Because everything is achieved via a software upgrade, such a deployment is not as difficult as one might think. This technology provides a hybrid of connectionless and connection-oriented packet forwarding. Copyright 1999 Advanstar Communications. Please send any technical comments or questions to the America's Network webmaster .