A “high availability” system comprises multiple switches under the control of a control processor (“CP”). The firmware executing on the processor can be changed when desired. Consistent with the high availability nature of the system (i.e., minimal down time), a single CP system implements a...http://www.google.com/patents/US7284236?utm_source=gb-gplus-sharePatent US7284236 - Mechanism to change firmware in a high availability single processor system
