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　　近日，經國際網絡巨鱷思科專家確認，神華集團所屬朔黃鐵路公司在國內第一個實現了虛擬網絡。目前國際上只有幾家企業實現了虛擬網絡，朔黃鐵路公司經過不斷學習，科學論證，實現了企業信息虛擬網絡，填補了國內虛擬網絡技術空白。

　　據(ju)悉，信息(xi)化網(wang)(wang)(wang)絡(luo)(luo)(luo)由于安(an)(an)(an)(an)全和(he)技術(shu)(shu)(shu)(shu)等(deng)原因，一(yi)(yi)個(ge)應用(yong)(yong)(yong)(yong)系(xi)(xi)(xi)統(tong)(tong)(tong)的(de)物(wu)理隔離(li)技術(shu)(shu)(shu)(shu)需要采(cai)(cai)用(yong)(yong)(yong)(yong)建(jian)(jian)設一(yi)(yi)套網(wang)(wang)(wang)絡(luo)(luo)(luo)系(xi)(xi)(xi)統(tong)(tong)(tong)的(de)方法，對(dui)于高技術(shu)(shu)(shu)(shu)密集型企業(ye)(ye)而言，各(ge)專業(ye)(ye)系(xi)(xi)(xi)統(tong)(tong)(tong)越多，必將(jiang)建(jian)(jian)設網(wang)(wang)(wang)絡(luo)(luo)(luo)系(xi)(xi)(xi)統(tong)(tong)(tong)越多，維護難，費用(yong)(yong)(yong)(yong)高。按照國內常規網(wang)(wang)(wang)絡(luo)(luo)(luo)技術(shu)(shu)(shu)(shu)慣例(li)，如果涉(she)及運輸、安(an)(an)(an)(an)全監控、自(zi)動化辦公(gong)(gong)、經營系(xi)(xi)(xi)統(tong)(tong)(tong)的(de)安(an)(an)(an)(an)全和(he)穩定(ding)性(xing)因素(su)，需要建(jian)(jian)設十幾套網(wang)(wang)(wang)絡(luo)(luo)(luo)。朔黃(huang)鐵(tie)路(lu)公(gong)(gong)司根據(ju)實際(ji)情況，從基礎做起，經過(guo)與專家研(yan)究探討后，決定(ding)應用(yong)(yong)(yong)(yong)虛(xu)擬網(wang)(wang)(wang)絡(luo)(luo)(luo)（VPN）技術(shu)(shu)(shu)(shu)，即在(zai)一(yi)(yi)張物(wu)理網(wang)(wang)(wang)絡(luo)(luo)(luo)平臺(tai)上，采(cai)(cai)用(yong)(yong)(yong)(yong)邏(luo)輯(ji)隔離(li)的(de)技術(shu)(shu)(shu)(shu)，實現各(ge)個(ge)業(ye)(ye)務系(xi)(xi)(xi)統(tong)(tong)(tong)的(de)虛(xu)擬化信息(xi)交(jiao)換，不僅(jin)可以(yi)節省傳(chuan)輸部署(shu)成(cheng)本，而且可以(yi)增加各(ge)業(ye)(ye)務系(xi)(xi)(xi)統(tong)(tong)(tong)之間的(de)安(an)(an)(an)(an)全性(xing)和(he)可靠(kao)性(xing)保(bao)障(zhang)。目前，國際(ji)成(cheng)熟的(de)虛(xu)擬網(wang)(wang)(wang)絡(luo)(luo)(luo)技術(shu)(shu)(shu)(shu)主要有MPLS VPN、VLAN、MCE三種方式(shi)(shi)：MPLS VPN方式(shi)(shi)，雖然(ran)可以(yi)很(hen)(hen)好滿足要求，但是投(tou)資成(cheng)本高，而且技術(shu)(shu)(shu)(shu)復雜度高；VLAN方式(shi)(shi)，建(jian)(jian)網(wang)(wang)(wang)成(cheng)本低(di)、VPN業(ye)(ye)務部署(shu)簡(jian)單，但是VLAN方式(shi)(shi)靈活(huo)性(xing)很(hen)(hen)差，容易(yi)形成(cheng)廣播(bo)環路(lu)等(deng)問(wen)題，對(dui)于安(an)(an)(an)(an)全和(he)帶寬利用(yong)(yong)(yong)(yong)都帶來(lai)問(wen)題；虛(xu)擬網(wang)(wang)(wang)絡(luo)(luo)(luo)技術(shu)(shu)(shu)(shu)--MCE（Multi-VRF）方式(shi)(shi)，具備VLAN方式(shi)(shi)的(de)低(di)成(cheng)本投(tou)資和(he)維護簡(jian)易(yi)特點的(de)同時，還具備MPLS VPN方式(shi)(shi)安(an)(an)(an)(an)全隔離(li)好，靈活(huo)性(xing)好，故障(zhang)自(zi)愈(yu)快(kuai)的(de)優(you)點。通過(guo)對(dui)比分析，朔黃(huang)鐵(tie)路(lu)公(gong)(gong)司結合傳(chuan)輸的(de)MSTP技術(shu)(shu)(shu)(shu)，將(jiang)網(wang)(wang)(wang)絡(luo)(luo)(luo)采(cai)(cai)用(yong)(yong)(yong)(yong)三層(ceng)交(jiao)換機(ji)，實現各(ge)站的(de)互聯；選擇MCE技術(shu)(shu)(shu)(shu)實現業(ye)(ye)務系(xi)(xi)(xi)統(tong)(tong)(tong)的(de)邏(luo)輯(ji)隔離(li)，在(zai)每個(ge)車站和(he)中心分別部署(shu)運輸管(guan)理、經營管(guan)理、視(shi)頻會議、工程管(guan)理、安(an)(an)(an)(an)全監控、5T系(xi)(xi)(xi)統(tong)(tong)(tong)、運力資源等(deng)VPN業(ye)(ye)務系(xi)(xi)(xi)統(tong)(tong)(tong)，并逐步擴展到了(le)30多個(ge)VPN業(ye)(ye)務系(xi)(xi)(xi)統(tong)(tong)(tong)，虛(xu)擬網(wang)(wang)(wang)絡(luo)(luo)(luo)經過(guo)一(yi)(yi)年的(de)應用(yong)(yong)(yong)(yong)，達(da)到了(le)預期效(xiao)果。