DEN for QOS may still a ly for WAN a licatio , edholm says.Indeed cisco has made more strides with DEN in the service provider market than in the enterprise arena.

• 差不多三年前，思科公司和微软公司宣布了目录允许网络（DEN）倡议，该公司要求开发一个在单一目录中存储有关网络设备、应用程序和用户等信息的标准。