A MIB module for extending the IF-MIB (RFC2863) to add objects which provide additional information about interfaces not available in other MIBS. This MIB replaces the OLD-CISCO-INTERFACES-MIB. GLOSSARY : Virtual Switch - A physical switch partitioned into multiple logical switches. Interface Sharing - An interface can be shared among multiple virtual switches. Speed Group - An interface is capable of operating in any one of the speed range depending on the capability of the hardware. Virtual Link (VL) - Virtual Link is a logical connectivity between two end points. A physical interface can have multiple Virtual Links. No Drop Virtual Link - According to 802.3 standard, No drop specifies lossless service on a virtual link. Drop Virtual Link - According to 802.3 standard, Traffic drop may occur on this virtual Link.