Abstract: A system for memory-transfer-based database synchronization in an appliance is provided. During operation, the system can receive, from a database manager on an active unit, a notification indicating that a first memory block has been updated due to an update to a first entry in a first database of the active unit. The system can identify a second memory block that stores a corresponding second entry in a second database of a standby unit. The first and second memory blocks can be in first and second memory segments, respectively, of respective memory devices of active and standby devices. The first and second memory segments can be outside of the accessible memory range of the respective operating systems. The system can then replace the content of the second memory block with the content of the first memory block using a memory-transfer operation, thereby synchronizing the first and second entries.

Abstract: One aspect of the instant application provides a system and method for generating internal traffic for a switch. During operation, the system configures a replication list comprising a plurality of replication entries, with a respective replication entry corresponding to a destination port on the switch. The system generates a seed packet to be replicated for each replication entry in the replication list, with a destination address of a respective replicated packet corresponding to a replication entry. All replicated packets are associated with a virtual local-area network (VLAN) reserved for the internal traffic. The system then forwards the replicated packets along with external packets received by the switch to corresponding destination ports on the switch.

Abstract: One aspect of the instant application provides a system and method for generating internal traffic for a switch. During operation, the system configures a replication list comprising a plurality of replication entries, with a respective replication entry corresponding to a destination port on the switch. The system generates a seed packet to be replicated for each replication entry in the replication list, with a destination address of a respective replicated packet corresponding to a replication entry. All replicated packets are associated with a virtual local-area network (VLAN) reserved for the internal traffic. The system then forwards the replicated packets along with external packets received by the switch to corresponding destination ports on the switch.