A method, system, and device for maintaining routes are provided. A communications network includes multiple point of presence (PoP) groups, where each of the PoP groups includes one or more PoP nodes. PoP nodes within the same PoP group issue routing information of the same super prefix. PoP nodes within...http://www.google.com/patents/US20110085554?utm_source=gb-gplus-sharePatent US20110085554 - Method and Device for Maintaining Routes
