module IF-INVERTED-STACK-MIB {

      yang-version 1;

      namespace
         "urn:ietf:params:xml:ns:yang:smiv2:IF-INVERTED-STACK-MIB";

      prefix "if-inverted";

      import IF-MIB {
         prefix "if-mib";
      }
      import SNMPv2-TC {
         prefix "smiv2";
      }
      import yang-smi {
         prefix "smi";
      }

      organization "IETF Interfaces MIB Working Group";

      contact
         "   Keith McCloghrie
         Cisco Systems, Inc.
         170 West Tasman Drive
         San Jose, CA  95134-1706
         US
         
         408-526-5260
         kzm@cisco.com";

      description
         "The MIB module which provides the Inverted Stack Table for
         interface sub-layers.";

      revision "2000-06-14" {
         description
            "Initial revision, published as RFC 2864";
      }


      container ifInvMIBObjects {
         list ifInvStackEntry {
            key "ifStackLowerLayer ifStackHigherLayer";
            description
               "Information on a particular relationship between two sub-
               layers, specifying that one sub-layer runs underneath the
               other sub-layer.  Each sub-layer corresponds to a conceptual
               row in the ifTable.";
            leaf ifStackLowerLayer {
               type leafref {
                  path
                     "/if-mib:ifMIBObjects/if-mib:ifStackEntry/if-mib:ifStackLowerLayer";
               }
               description "Automagically generated leafref leaf.";
            }

            leaf ifStackHigherLayer {
               type leafref {
                  path
                     "/if-mib:ifMIBObjects/if-mib:ifStackEntry/if-mib:ifStackHigherLayer";
               }
               description "Automagically generated leafref leaf.";
            }

            leaf ifInvStackStatus {
               type smiv2:RowStatus;
               config "false";
               description
                  "The status of the relationship between two sub-layers.
                  
                  An instance of this object exists for each instance of the
                  ifStackStatus object, and vice versa.  For example, if the
                  variable ifStackStatus.H.L exists, then the variable
                  ifInvStackStatus.L.H must also exist, and vice versa.  In
                  addition, the two variables always have the same value.
                  
                  However, unlike ifStackStatus, the ifInvStackStatus object
                  is NOT write-able.  A network management application wishing
                  to change a relationship between sub-layers H and L cannot
                  do so by modifying the value of ifInvStackStatus.L.H, but
                  must instead modify the value of ifStackStatus.H.L.  After
                  the ifStackTable is modified, the change will be reflected
                  in this table.";
               smi:oid "1.3.6.1.2.1.77.1.1.1.1";
            }
            smi:oid "1.3.6.1.2.1.77.1.1.1";
         }  // list ifInvStackEntry
         smi:oid "1.3.6.1.2.1.77.1";
      }  // container ifInvMIBObjects
   }  // module IF-INVERTED-STACK-MIB