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---
- name: vlan
  title: VLAN
  group: 2
  short: Fields to describe observed VLAN information.
  description: >
    The VLAN fields are used to identify 802.1q tag(s) of a packet, as well as ingress and
    egress VLAN associations of an observer in relation to a specific packet or connection.

    Network.vlan fields are used to record a single VLAN tag, or the outer tag in the case
    of q-in-q encapsulations, for a packet or connection as observed, typically provided by a
    network sensor (e.g. Zeek, Wireshark) passively reporting on traffic.

    Network.inner VLAN fields are used to report inner q-in-q 802.1q tags (multiple
    802.1q encapsulations) as observed, typically provided by a network sensor  (e.g. Zeek,
    Wireshark) passively reporting on traffic. Network.inner VLAN fields should only be used
    in addition to network.vlan fields to indicate q-in-q tagging.

    Observer.ingress and observer.egress VLAN values are used to record observer specific
    information when observer events contain discrete ingress and egress VLAN information,
    typically provided by firewalls, routers, or load balancers.

  reusable:
    top_level: false
    expected:
      - observer.ingress
      - observer.egress
      - network
      - network.inner

  type: group
  fields:

    - name: id
      level: extended
      type: keyword
      example: 10
      description: >
        VLAN ID as reported by the observer.

    - name: name
      level: extended
      type: keyword
      example: outside
      description: >
        Optional VLAN name as reported by the observer.