目錄允許網(wǎng)絡(luò)(二)

字號(hào):

Instead of prioritizing bandwidth allocation, users can inexpensively overprovision band-width when they need to support delay-sensitive traffic such as voice and video. Also, simple mechanisms such as setting 802.1p bits on ethernet frame or type-of -service bits in IP headers are enough for LAN QOS.
    Nonetheless, there 's still a huge demand among enterprise users for directories to enable self-configuring networks based on business policy.
    DEN for QOS may still apply for WAN applications, edholm says. Indeed cisco has made more strides with DEN in the service provider market than in the enterprise arena.
    Service providers are looking to DEN to integrate multivendor products into an interoperable operational support system.
    So despite the silnece, progress on DEN is being the silnece, progress on DEN is being made and activty is expected to pick up once standards become a little more solidiffed.
    差不多三年前,思科公司和微軟公司宣布了目錄允許網(wǎng)絡(luò)(DEN)倡議,該公司要求開(kāi)發(fā)一個(gè)在單一目錄中存儲(chǔ)有關(guān)網(wǎng)絡(luò)設(shè)備、應(yīng)用程序和用戶等信息的標(biāo)準(zhǔn)。
    此目錄把用戶的名字和網(wǎng)絡(luò)資源訪問(wèn)簡(jiǎn)表與允許或限制訪問(wèn)的政策和安排帶寬優(yōu)先級(jí)別及特權(quán)掛起鉤來(lái)。此目標(biāo)標(biāo)準(zhǔn)規(guī)范的研究工作交給了分布管理任務(wù)組(DMTF)。
    今年三月,DETF 宣布完成了新版公共信息模型(CIM)的研究工作,此模型實(shí)現(xiàn)了CIM模式映射到簡(jiǎn)便目錄訪問(wèn)協(xié)議(LDAP)的相應(yīng)目錄中,CIM 定義如何在目錄中表示網(wǎng)絡(luò)設(shè)備,系統(tǒng)和應(yīng)用數(shù)據(jù),因而它很容易為DEN 和企業(yè)管理目的而被共享。