【正文】 tocolmodules(IP)ApplicationmodulesRuns onmultiple CPU’s169。2/ 58Version Cisco IOS XR高級介紹n Cisco2/ 56Version 操作系統(tǒng)基本功能n 進(jìn)程調(diào)度n 中斷處理n 內(nèi)存管理n 同步n 進(jìn)程間通信（ IPC）n 動態(tài)鏈接庫n 可移植操作系統(tǒng)接口（ POSIX）169。CRS1Essentials—Module某些協(xié)議如今已經(jīng)變成了業(yè)界標(biāo)準(zhǔn)，而某些仍是廠商私有 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. CiscoCRS1CRS1CRS1CRS1CRS1CRS1Essentials—ModuleEssentials—Module2/ 1Version 目錄?CRS1 硬件架構(gòu)介紹?CRS1 IOSXR介紹?CRS1 IOSXR基本配置?CRS1 IOSXR 路由協(xié)議配置?CRS1 IOSXR RPL配置介紹169。2/ 3Version Cisco CRS1 System Configurations? Single Shelf System? 8 or 16 MSC and PLIM slots? No Fabric chassis required4 or 8 Fabric cards in line card chassis? Multishelf System ( TO 92T)2 to 72 16slot line card chassis39。Essentials—ModuleEssentials—ModuleEssentials—ModuleEssentials—ModuleEssentials—ModuleEssentials—ModuleCRS1CRS1CRS1CRS1CRS1CRS1CRS1CRS1CRS1CRS1CRS1CRS1CRS1CRS1CRS1CRS1CRS1CRS13n 網(wǎng)絡(luò)運(yùn)營商具有多張?zhí)囟ǚ?wù)網(wǎng)絡(luò)：2/ 53Version 網(wǎng)絡(luò)演變?nèi)缃竦木W(wǎng)絡(luò)、用戶和服務(wù)發(fā)生了翻天覆地的變化：n應(yīng)用：視頻會議、實(shí)時消息、 IPTV、網(wǎng)真、遠(yuǎn)程醫(yī)療、點(diǎn)到點(diǎn)共享、視頻監(jiān)控、網(wǎng)絡(luò)上銀行、購物n用戶數(shù)： 1995年、 inter用戶數(shù) 1600萬、 2023用戶數(shù) 、如今n傳輸性能：共早期 155Mbit/s提升到如今的太比特級別（ Tbit/s）n處理器與內(nèi)存性能：摩爾定律、 CPU從幾十 MHZTHZ多核處理器、內(nèi)存容量從 MBGBn協(xié)議：從過去的眾諸侯相爭過度合并成了 IPV4/IPV6和 Ethern網(wǎng)絡(luò)：已經(jīng)或正在將傳統(tǒng)的特定業(yè)務(wù)向支持多種服務(wù)的融合性網(wǎng)絡(luò)進(jìn)行遷移169。Essentials—Module 2023, Cisco Systems, Inc. All rights reserved. CiscoIOS 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco started on standby card4. Process D: no checkpointing no process D39。Process 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. Cisco2/ 82Version Access and Login? IOS XR router access:Direct connection to console portTerminal server connected to the console portTel or SSH (v1 or v2)? Login Rootsystem user defined at initial installAssigned username and passwordUser Access VerificationUsername: usernamePassword: passwordRP/0/RP0/CPU0:P1169。2/ 84Version Management IP Interfaces?Cisco CRS1 Management Ether interfacesMgmtEth0/RP0/CPU0/0MgmtEth0/RP1/CPU0/0Managementworkconnections169。Essentials—ModuleEssentials—Module 2023, Cisco Systems, Inc. All rights reserved. Cisco 2023, Cisco Systems, Inc. All rights reserved. CiscoCRS1CRS1Essentials—ModuleEssentials—ModuleEssentials—ModuleEssentials—ModuleEssentials—ModuleEssentials—ModuleProcessAProcessEssentials—ModuleEssentials—ModuleEssentials—ModuleEssentials—ModuleEssentials—ModuleIOSEssentials—ModuleCRS12/ 51Version 網(wǎng)絡(luò)的演變n 20世紀(jì) 80年代，網(wǎng)絡(luò)主要應(yīng)用僅限于 “網(wǎng)頁瀏覽、電子郵件、文件傳輸、打印機(jī)和數(shù)據(jù)庫 ”n 基于包轉(zhuǎn)發(fā)的硅技術(shù)硬件還未大規(guī)模部署且硬件的傳輸速率、 CPU性能、內(nèi)存容量有限n 設(shè)計(jì) “路由器 ”及 “相關(guān) NOS”的初衷是使包轉(zhuǎn)發(fā)能夠有效地利用 CPU和內(nèi)存資源n NOS（網(wǎng)絡(luò)操作系統(tǒng)）主要用來執(zhí)行和發(fā)揮網(wǎng)絡(luò)與網(wǎng)絡(luò)互聯(lián)的功能和作用169。2/ 49Version Route Processor (RP) Active and Standby Arbitration The activestandby arbitration algorithm performed by hardware and software: chassis power up, each RP boots and runs selftests. RPs exchange messages with each other and with SPs on all other boards. Each RP examines its outgoing “Reset” lines to verify that they are inactive. on results of these tests, each RP decides whether it is ready to bee the active RP. If it is, it asserts “Ready” signal to its onboard arbitration unit that propagates “Ready” signal to other RP. hardware chooses active RP. Hardware asserts “Active” signal to chosen RP, along with an interrupt and propagates “Active” signal to other RP, which also receives an interrupt. If a tie, “Active” is RP in lower numbered slot. on each reads its “Active” signal, and branches accordingly to “Primary” or “Standby” code. active RP is removed, powered down, or voluntarily deasserts its “Ready” signal, standby RP immediately receives an asserted “Active” signal, along with an interrupt.169。2/ 47Version RP Block DiagramFPGAFE/GEswitchMEMCTL CPU PCMCIA2IDETo fabricFrom fabricCPUIFQlinksLC FElinks CTL GE linkCTL GE linkMidplanePCI123Aux and consoleManagement GE link56789410Card presence detectRP mastershipPROM presence169。2/ 45Version RP IDE hard drive:? Used for storing debug info, such as, core dumps from RP or MSCs? Typically only active when needed? Hotpluggable and sled mounted169。2/ 43Version Route Processor (RP) – Overview The RP bines system controller functionality with route processing capabilityEach 16Slot Line Card Chassis contains two route processor (RP) cards that:? One RP serves as the active master, while the other serves as the standby unit? Are located in dedicated slots the front side of the chassis in the center of the lowe