Network apparatus, control method thereof, control program and packet network system

摘要

A switching process includes an SRAM/CAM storing registration data including a forwarding database used for packet-forwarding and a DRAM storing packet data. The registration data including the forwarding database of the SRAM/CAM for packet-forwarding is stored into the DRAM as a copy of the registration data, and the registration data of the DRAM is used to refresh the registration data of the SRAM/CAM for a predetermined time interval. A data error in the SRAM/CAM caused by a soft-error is rewritten to normal data by periodical refreshing so that data is guaranteed with relatively low cost and the reliability of the network apparatus is improved.

主权项

1. A network apparatus, comprising:
a first storage unit configured to store registration data including a forwarding database used for packet-forwarding; a second storage unit configured to store packet data; a switching processor configured to receive an importance of the registration data from a CPU, the importance of the registration data being related to a priority of the registration data; and a refreshing unit configured to store the registration data into the first storage unit and the second storage unit, and refresh the first storage unit based on the registration data stored in the second storage unit at a predetermined time interval, wherein a control table is provided that has stored therein information of the registration data and the importance corresponding to the registration data, and the predetermined time interval is determined to be shorter as the importance of the registration data stored in the control table increases.