module cisco-bridge-common {

    yang-version 1;

    namespace
      "urn:cisco:params:xml:ns:yang:cisco-bridge-common";

    prefix cbridge;

    import cisco-semver {
      prefix cisco-semver;
    }
    import ietf-yang-types {
      prefix yang;
    }

    organization "Cisco Systems, Inc.";

    contact
      "Cisco Systems, Inc.
     Customer Service

     Postal: 170 W Tasman Drive
     San Jose, CA 95134

     Tel: +1 1800 553-NETS

     E-mail: cs-yang@cisco.com";

    description
      "This module contains a collection of Cisco specific YANG type
     definitions for Layer 2 Bridging.

     Terms and Acronyms
       BD : Bridge Domain

       DAI : Dynamic ARP Inspection

       DHCP : Dynamic Host Configuration Protocol

       IGMP :  Internet Group Management Protocol

       IPSG : IP Source Guard

       MLD : Multicast Listener Discovery
    ";

    revision "2019-07-01" {
      description
        "Establish semantic version baseline";
    }

    revision "2016-12-14" {
      description
        "Remove cisco govern extension";
    }

    revision "2014-09-25" {
      description "Proposed";
      reference
        "TODO";

    }

    cisco-semver:module-version "1.0.0";

    feature configurable-bd-mac-aging-types {
      description
        "This feature represents the ability to configure MAC aging
       parameters.";
    }

    feature configurable-bd-mac-limit-max {
      description
        "This feature represents the ability to configure MAC limit
       threshold on bridge-domains.";
    }

    feature configurable-bd-mac-limit-actions {
      description
        "This feature represents the ability to configure actions for
       mac-limit violation event.";
    }

    feature configurable-bd-mac-limit-notif {
      description
        "This feature represents the ability to configure notification
       for mac-limit violation event.";
    }

    feature configurable-bd-flooding-control {
      description
        "This feature represents the ability to configure flooding
       control parameters.";
    }

    typedef eth-traffic-class {
      type enumeration {
        enum "broadcast" {
          value 0;
          description
            "Ethernet frames with destination mac-address
           eqaul to FFFF.FFFF.FFFF";
        }
        enum "multicast" {
          value 1;
          description
            "Ethernet frame with destination MAC address not equal
           to the broadcast address, but with the multicast bit set
           to 1.";
        }
        enum "unknown-unicast" {
          value 2;
          description
            "Ethernet frames with with a packet destination MAC
           address not yet learned.";
        }
      }
      description
        "Traffic class for layer 2 ethernet transport";
    }

    typedef mac-aging-type {
      type enumeration {
        enum "inactivity" {
          value 0;
          description
            "Dynamically learnt MAC entries are aged out after
           configured aging time only if no data traffic is
           detected during aging period.";
        }
        enum "absolute" {
          value 1;
          description
            "Dynamically learnt MAC entries are aged out after
           configured aging time.";
        }
      }
      description "MAC aging mechanism.";
    }

    typedef mac-limit-action {
      type enumeration {
        enum "none" {
          value 0;
          description "No action";
        }
        enum "flood" {
          value 1;
          description
            "Stop mac learning and flood unknown unicast traffic.";
        }
        enum "drop" {
          value 2;
          description
            "Stop mac learning and drop unknown unicast traffic.";
        }
        enum "shutdown" {
          value 3;
          description
            "Bring down operational status of the interface.";
        }
      }
      description
        "Actions to be taken once mac limit threshold is exceeded.";
    }

    typedef mac-secure-action {
      type enumeration {
        enum "none" {
          value 0;
          description
            "Forward the violating packet and allow the MAC to be
           relearned.";
        }
        enum "restrict" {
          value 1;
          description
            "Drop violating packet.";
        }
        enum "shutdown" {
          value 2;
          description
            "Force shutdown the violating bridge port.";
        }
      }
      description
        "Actions to be taken upon mac secure violation.";
    }

    identity mac-limit-notification-type {
      description
        "Notification mechanism to use when mac limit threshold is
       exceeded.";
    }

    identity notif-none {
      base mac-limit-notification-type;
      description "Disable notification";
    }

    identity notif-snmp-trap {
      base mac-limit-notification-type;
      description "Generate SNMP trap";
    }

    identity notif-syslog {
      base mac-limit-notification-type;
      description "Generate syslog";
    }

    identity notif-syslog-and-snmp-trap {
      base mac-limit-notification-type;
      description
        "Generate both syslog and SNMP trap";
    }
  }  // module cisco-bridge-common