The MIB module for creation and deletion of Virtual Interfaces and Virtual Interface Groups. In addition to this MIB, interface mib (rfc2863) will also contain entries for virtual interfaces. There are two ways virtual interfaces can be created and bound to an interface. The MIB Object cvifGroupsSupported indicates if a particular system supports the Virtual Interface Group concept. If Virtual Interface Groups are supported, then a virtual interface is always created/deleted in conjunction with its associated Virtual Interface Group. The Virtual Interface Group, which may be associated to multiple virtual interfaces, is then bound to a physical interface or another virtual interface like an EtherChannel. If Virtual Interface Groups are not supported, then a virtual interface is created/deleted independently. And each virtual interface is bound to a physical interface or another virtual interface like an EtherChannel. In order for a virtual interface to become operational, it must be directly or indirectly (via its Virtual Interface Group) bound to a physical interface or possibly to another virtual interface such as an EtherChannel. The cvifGroupTable is only used if the MIB object cvifGroupsSupported indicates Virtual Interface Groups are supported.