System information

3
 X-ring
 X-ring, Dual Homing, and Couple Ring Topology
 Provides redundant backup feature and the recovery time below 300ms
 Bandwidth Control
 Ingress Packet Filter and Egress Rate Limit
 Broadcast / Multicast / Flooded Unicast Packet Filter Control
 System Event Log
 System Log Server/Client
 SMTP e-mail Alert
 SNMP Trap
 Device cold start
 Authentication failure
 X-ring topology changed
 Port Link up/Link down
 TFTP Firmware Update and System Configuration Restore and Backup