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---
- name: interface
  title: Interface
  group: 2
  short: Fields to describe observer interface information.
  description: >
    The interface fields are used to record ingress and egress interface information when
    reported by an observer (e.g. firewall, router, load balancer) in the context of the
    observer handling a network connection.  In the case of a single observer interface
    (e.g. network sensor on a span port) only the observer.ingress information should be
    populated.

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

  type: group
  fields:

    - name: id
      level: extended
      type: keyword
      short: Interface ID
      example: 10
      description: >
        Interface ID as reported by an observer (typically SNMP interface ID).

    - name: name
      level: extended
      type: keyword
      short: Interface name
      example: eth0
      description: >
        Interface name as reported by the system.

    - name: alias
      level: extended
      type: keyword
      short: Interface alias
      example: outside
      description: >
        Interface alias as reported by the system, typically used in firewall implementations for e.g.
        inside, outside, or dmz logical interface naming.