ocr: Table 2: Tracking Fault Tolerance Hardware fault tolcrance Sottware fault tolerance Company Lose two Add. chassis Lose a route Add a protocol Enhance Upgrade to a new switch cards to cluster processor or driver SNMP release of code Avici N/A Cisco Lucent Tellabs Baseline: Juniper N/A chariotte's Web Pluris Nortel Stop operation (Interrupts the operation of the: software process or hardware component) Warning (May interrupt operation of the software process or hardware component) All systems go N/A: =E Not applicable