... trees· MRSTP- Multiple RSTP· VRRP (Virtual Router Redundancy Protocol)Â (MGS-3712, MGS-3712F, MES-3728 only)User Security and Authentication· IEEE 802 ... SNMP trap group· RMON four RMON groups 1, 2, 3, 9 (history, statistics, alarms, and events) for enhanced traffic management,monitoring ... MIB· RFC1643 Ethernet MIB· RFC1757 RMON group 1, 2, 3, 9· RFC2011 IP MIB· RFC2012 TCP MIB· RFC2013 UDP MIB· RFC2674 ...