The ensures that all entries contain an "entity tag" or "Etag" as defined in section 3.11 of RFC 2616. The entity tag may be used by clients, in conjunction with the assertion control, for optimistic concurrency control, as a way to help prevent simultaneous updates of an entry from conflicting with each other. ds-cfg-entity-tag-virtual-attribute ds-cfg-virtual-attribute org.opends.server.extensions.EntityTagVirtualAttributeProvider real-overrides-virtual etag The algorithm which should be used for calculating the entity tag checksum value. adler-32 The Adler-32 checksum algorithm which is almost as reliable as a CRC-32 but can be computed much faster. The CRC-32 checksum algorithm. ds-cfg-checksum-algorithm The list of attributes which should be ignored when calculating the entity tag checksum value. Certain attributes like "ds-sync-hist" may vary between replicas due to different purging schedules and should not be included in the checksum. ds-sync-hist ds-cfg-excluded-attribute