【正文】 //配置同網(wǎng)絡(luò)口出隊(duì)列配置一樣, 應(yīng)用到MDA板卡//configure card 1 mda 1 network ingress queuepolicy nqNetwork configure card 1 mda 2 network ingress queuepolicy nqNetwork WRED配置。n 配置兩套WRED模板分別針對(duì)高等級(jí)業(yè)務(wù)和低等級(jí)業(yè)務(wù)。trafficpolicy tpDefault inboundint gi 2/0/1 與IPTV平臺(tái)互連的接口，進(jìn)入城域網(wǎng)的流量標(biāo)記IP Precedence值為5trafficpolicy tpHigh inbound配置隊(duì)列調(diào)度：應(yīng)用在所有與BRAS/SR互聯(lián)的物理端口int gi x/x/x trust upstream default qos queue af4 priority 0 cir cirpercentage 30 outbound 其中AF4指定priority 0 表示使用PQ調(diào)度 qos queue ef priority 1 cir cirpercentage 50 outbound 其中AF4指定priority 1，表示使用WFQ調(diào)度 qos queue be cir cirpercentage 20 outbound 檢查端口隊(duì)列調(diào)度情況 ：display qos queue interface gi x/x/x 匯聚/SR路由器配置 GSR12816/12416路由器配置 適用范圍n 軟件版本： (32)S6。set classofservice forwardingclasses queue 0 fcDefaultset classofservice forwardingclasses queue 0 priority lowset classofservice forwardingclasses queue 1 fcHighset classofservice forwardingclasses queue 1 priority lowset classofservice forwardingclasses queue 2 fcCriticalset classofservice forwardingclasses queue 2 priority high定義丟棄策略dropprofile。針對(duì)一個(gè)端口在一個(gè)方向只能應(yīng)用一個(gè)policymap策略。 分類和標(biāo)記策略n 上聯(lián)核心匯聚路由器的端口：不進(jìn)行QoS標(biāo)記；n 對(duì)于直接接入BRAS/SR的業(yè)務(wù)，按照端口或VLAN進(jìn)行QOS標(biāo)記； 針對(duì)用戶啟用限速和整形功能。由于WRR隊(duì)列在未滿的情況下可以被低等級(jí)業(yè)務(wù)擠占，因此我們分配50%的帶寬給輪詢隊(duì)列1。B 為緩沖區(qū)長(zhǎng)度。為提高連接的穩(wěn)定性，寬帶接入網(wǎng)接入點(diǎn)及以上設(shè)備提供一個(gè)嚴(yán)格優(yōu)先隊(duì)列和一個(gè)以上的輪循隊(duì)列，實(shí)現(xiàn)基于QoS 等級(jí)的包轉(zhuǎn)發(fā)。2 QOS保障策略 QOS實(shí)現(xiàn)模型城域網(wǎng)QOS技術(shù)實(shí)現(xiàn)遵循集團(tuán)城域網(wǎng)優(yōu)化指導(dǎo)意見的相關(guān)思路。采用下圖所示的模型規(guī)劃相關(guān)技術(shù)方案。 分類和標(biāo)記根據(jù)集團(tuán)統(tǒng)一規(guī)劃，IP 城域網(wǎng)的QoS 策略與CN2 骨干網(wǎng)、ChinaNet 骨干網(wǎng)統(tǒng)籌考慮，城域網(wǎng)標(biāo)記只按照IP PRE/EXP/ 給予8 個(gè)值的劃分空間，進(jìn)出CN2 時(shí)要求保持等級(jí)標(biāo)簽的一致性（進(jìn)出CN2 不必重寫），即要求保持等級(jí)標(biāo)簽的一致性；對(duì)從ChinaNet進(jìn)入城域網(wǎng)的流量標(biāo)記為0。互聯(lián)網(wǎng)業(yè)務(wù)020%丟包參數(shù)：Min=30%*B，Max=B,Min 開始丟包，Max 完全丟包?；ヂ?lián)網(wǎng)業(yè)務(wù)對(duì)應(yīng)低等級(jí)業(yè)務(wù)，業(yè)務(wù)標(biāo)記為為0，屬于默認(rèn)業(yè)務(wù)，在輪詢隊(duì)列2執(zhí)行調(diào)度，計(jì)劃分配20%的帶寬給輪詢隊(duì)列2。 如果匯聚路由器或BRAS設(shè)備與IPTV平臺(tái)互聯(lián)，則對(duì)從IPTV平臺(tái)進(jìn)入的數(shù)據(jù)包的IP Precedence置為5；對(duì)進(jìn)入IPTV平臺(tái)的數(shù)據(jù)包不進(jìn)行重新標(biāo)記。對(duì)從IPTV平臺(tái)進(jìn)入城域網(wǎng)的流量標(biāo)記IP Precedence值為5，在核心路由器與IPTV區(qū)域中心互聯(lián)的端口上應(yīng)用策略。//針對(duì)FC High流量的dropprofile：set classofservice dropprofiles dropHighTCP interpolate filllevel 20 set classofservice dropprofiles dropHighTCP interpolate filllevel 80 set classofservice dropprofiles dropHighTCP interpolate filllevel 100 //最小丟棄閥值20%，中間丟棄閥值80%，最大丟棄閥值100%//set classofservice dropprofiles dropHighTCP interpolate dropprobability 0set classofservice dropprofiles dropHighTCP interpolate dropprobability 10set classofservice dropprofiles dropHighTCP interpolate dropprobability 100//小于最小閥值時(shí)，丟棄概率為0；在最小和中間閥值之間時(shí)，丟棄概率為0；在中間和最大閥值之間時(shí)，丟棄概率為10%；大于最大閥值時(shí)，丟棄概率為100%//set classofservice dropprofiles dropHighNonTCP interpolate filllevel 80set classofservice dropprofiles dropHighNonTCP interpolate filllevel 100set classofservice dropprofiles dropHighNonTCP interpolate dropprobability 0set classofservice dropprofiles dropHighNonTCP interpolate dropprobability 100//針對(duì)FC Default流量的dropprofile：set classofservice dropprofiles dropDefaultTCP interpolate filllevel 20 set classofservice dropprofiles dropDefaultTCP interpolate filllevel 30 set classofservice dropprofiles dropDefaultTCP interpolate filllevel 100 //最小丟棄閥值20%，中間丟棄閥值30%，最大丟棄閥值100%//set classofservice dropprofiles dropDefaultTCP interpolate dropprobability 0set classofservice dropprofiles dropDefaultTCP interpolate dropprobability 10set classofservice dropprofiles dropDefaultTCP interpolate dropprobability 100//小于最小閥值時(shí)，丟棄概率為0；在最小和中間閥值之間時(shí)，丟棄概率為0；在中間和最大閥值之間時(shí)，丟棄概率為10%；大于最大閥值時(shí)，丟棄概率為100%//set classofservice dropprofiles dropDefaultNonTCP interpolate filllevel 80set classofservice dropprofiles dropDefaultNonTCP interpolate filllevel 100set classofservice dropprofiles dropDefaultNonTCP interpolate dropprobability 0set classofservice dropprofiles dropDefaultNonTCP interpolate dropprobability 100對(duì)分類數(shù)據(jù)定義調(diào)度策scheduler：set classofservice schedulers schCritical transmitrate percent 30set classofservice schedulers schCritical buffersize temporal 12kset classofservice schedulers schCritical priority stricthigh//定義schCritical 為PQ，帶寬分配30%，緩沖區(qū)大小為12000ms//set classofservice schedulers schHigh transmitrate percent 50set classofservice schedulers schHigh buffersize temporal 20kset classofservice schedulers schHigh priority highset classofservice schedulers schHigh dropprofilemap losspriority low protocol tcp dropprofile dropHighTCPset classofservice schedulers schHigh dropprofilemap losspriority low protocol nontcp dropprofile dropHighNonTCP//定義schHigh 為WFQ，帶寬分配50%，緩沖區(qū)大小為200000ms，并針對(duì)TCP和非TCP流量應(yīng)用WRED策略。測(cè)試通過n 硬件配置：設(shè)備型號(hào)業(yè)務(wù)板卡類型接口板卡類型備注GSR128XX (32)S6E3/ 4GESFPLC=　E3代的4端口千兆以太網(wǎng)板卡E5/ 12000SIP600=SPA1XTENGEXFP1端口萬兆以太網(wǎng)XFP接口SPA10X1GE10端口千兆以太網(wǎng)SPAOC192POSXFPSPAOC192POSXFPSPA2XOC48POS/RPR2端口OC48 POS/RPR接口SPAOC192POSLR1端口OC192POS口LR接口E6/ 2OC192E/POSIRSC=　E6代的2端口POS中距E6/ 2OC192E/POSSRSC=　E6代的2端口POS短距E6/ 2OC192E/POSVSR=　E6代的2端口POS超短距E6/ 8OC48/POSSFP　E6代的8端口OC48 POS 配置說明n 使用模塊化(MQC)的QOS命令行方式實(shí)現(xiàn)，分別定義classmap和policymap以及應(yīng)用servicepolicy) ；Classmap、policyma均為命名格式，采用匈牙利命名規(guī)則。定義優(yōu)先級(jí)和業(yè)務(wù)等級(jí)的映射關(guān)系：diffserv domain default 8021pinbound 0 phb be green 8021pinbound 1 phb ef green 8021pinbound 2 phb ef green 8021pinbound 3 phb ef green 8021pinbound 5 phb ef green 8021pinbound 7 phb ef green 8021pinbound 4 phb af4 green 8021pinbound 6 phb af4 gree ipdscpinbound 0 phb be green ipdscpinbound 8 phb ef green ipdscpinbound 24 phb ef green ipdscpinbound 40 phb ef green ipdscpinbound 56 phb ef green ipdscpinbound 32 phb af4 green ipdscpinbound 48 phb af4 green mplsexpinbound 0 phb be green mplsexpinbound 1 phb ef green mplsexpinbound 2 phb ef green mplsexpinbound 3 phb ef green mplsexpinbound 5 phb ef green mplsexpinbound 7 phb ef green mplsexpinbound 4 phb af4 green mplsexpinbound 6 phb af4 green //入方向?qū)?biāo)記映射到內(nèi)部業(yè)務(wù)等級(jí)ipdscpoutbound be green map 0 ipdscpoutbound af4 g