四川电信CRS-1培训教材思科NOS服务组.ppt

四川电信crs-1培训教材,四川电信思科nos服务组,目录,crs-1介绍 crs-1 ios-xr介绍 crs-1 ios-xr基本配置 crs-1 ios-xr 软件安装介绍 crs-1 ios-xr 安全配置 crs-1 ios-xr 路由协议配置 crs-1 ios-xr rpl配置介绍,cisco crs-1 routing system - overview,next generation core 40 gbps routing multishelf scale foundation for core consolidation,crs-1,cisco crs-1 system configurations,single shelf system 8 or 16 msc and plim slots no fabric chassis required 4 or 8 - fabric cards in line card chassis,multishelf system (1.2t to 92t) 2 to 72 16-slot line card chassis 1 to 8 fabric chassis,cisco crs-1 multishelf systems,switch fabric fiber cables are used to interconnect lc through sfc interchassis management system control plane traffic does not pass through fiber cables,cisco crs-1 line card chassis,crs-1 8-slot,crs-1 16-slot,cisco crs-1 interfaces,plims 16-port oc-48c/stm-16c pos/dpt 4-port oc-192c/stm-64c pos/dpt 1-port oc-768c/stm-256c pos/dpt 8-port 10 gigabit ethernet spa interface processor-800 8-port gigabit ethernet spa 4-port oc-3c/stm-1c pos spa 1-port oc-192c/stm-64c pos spa,crs-1 16-slot line card chassis,midplane design with front & rear access front 16 plim slots 2 rp slots + 2 fan controllers back 16 msc slots 8 fabric cards dimensions: 23.6” w x 41*” d x 84” h (60 w x 104.2 d x 213.36h (cm) power: 13.2 kw (ac or dc) weight: 1600 lbs/723kg heat dis.: 41000 btus,plim side components,1,2,3,4,5,msc side components,1,2,3,4,5,6,crs-1 16 slot cable management (for print),cable-management bracket has telescoping feature that allows bracket to be extended when chassis is upgraded with higher-density cards.,crs-1 16 slot cable management,cable-management bracket has telescoping feature that allows bracket to be extended when chassis is upgraded with higher-density cards.,crs-1 16 slot cable management,cable-management,crs-1 16 slot line card chassis slot numbering,line card chassis power system - overview,power system is fully redundant and is comprised of: ac or dc power shelves 3 ac rectifiers or dc pems per shelf alarm modules dual bus bars chassis midplane special components on cards or modules, like dc-to-dc converters, or oring diodes or emi filters,power architecture,power system architecture provides fully redundant ac or dc power line card chassis still operates normally if: one ac rectifier or dc pem fails one entire power shelf fails, or one bus bar fails for system degradation to occur requires two failures: in both the a and b sides of power architecture that effect the same load zone same architecture used for both ac and dc powered line card chassis three different types of power shelves; dc, ac wye and ac delta,power distribution (for print),power distribution,power shelf/load zones,line card chassis load zones (use for print),line card chassis load zones,crs-1 16-slot dc power system - overview,dc power system provides 13,200 watts maximum two dc power shelves per chassis provides 2n redundancy each dc power shelf houses: input power connectors its own shelf circuit breaker three dc power entry modules (pems) each pem is field replaceable each pem has its own circuit breaker alarm module power distribution connections and wiring power shelf installs in chassis from the front and plugs into chassis power interface connector panel,dc power shelf input connectors,grnd 6 input connectors,dc power shelf architecture,dc pem,leds,dc pem status monitoring,the power shelf service processor circuitry monitors the following dc pem fault and alarm conditions: fault dc input fail circuit breaker trip over temperature pem present voltage and current monitoring signals,dc pem status indicators & meanings,alarm module,ext. alarm connector led indicators alpha indicators,alarm module functions,the alarm module performs the following functions: alarm outputs for both leds and relay leds alpha relay alarm relay connector is da-15s only selv circuits connect to alarm module pem or ac rectifier status monitoring alarm monitoring,status monitoring,alarm module responsible for monitoring ac rectifiers or dc pems plugged into the power shelf it shares the monitored parameters include: circuit breaker tripped conditions power good power fail internal fault over temp conditions ac rectifier or pem presence voltage and current output levels has a backup power connection to the neighboring power shelf,crs-1 16-slot line card chassis cooling system - overview,the complete line card chassis cooling system includes: two fan trays two fan controller cards temperature sensors distributed on cards and modules in the chassis the operating software that controls the cooling system an air filter inlet and outlet air vents and bezels impedance carriers for empty chassis slots power module cooling fans,line card chassis airflow,fan control architecture,the fan control architecture: controls fan speed to optimize cooling, acoustics, and power consumption for various chassis-heating conditions monitors the cooling system with temperature sensors on modules and cards is redundant from both a power and cooling standpoint supports a redundant load-sharing design that contains: two fan trays, each containing nine fans two fan controller cards control software and logic there are four normal operating fan-speeds, plus one high-speed setting used when a fan tray has failed.,line card chassis fan tray,the two fan trays: are interchangeable plug into the rear of lc chassis each line card chassis fan tray contains: nine fans a front-panel status led,status,status led,line card chassis fan controller card,bits/setsext. clk 1,bits/setsext. clk 2,status leds,fan controller card operation,fans run at 4300 to 4500 rpm at initial power up fan control software takes control of fan speed once the system is initialized (could take 3 to 5 minutes) fan controller cards and fan trays have quick-shutdown mode to aide in oir quick-shutdown mode minimizes inrush current during hot swap or oir,cooling system redundancy,the redundancy design in the cooling subsystem can tolerate: a single fan tray failure a single fan failure a single fan controller board failure a single fan cable failure a single power shelf, or a single power module (pem or ac rectifier) to fail without impacting routing system or line card chassis availability,thermal sensors,thermal sensors on each board in system monitor temperatures throughout chassis three types of sensors in the chassis: inlet exhaust hot spot any sensor can send a thermal alarm when thermal alarm occurs fault condition passed to sp on each fan controller board for control software to takes appropriate action,fan control redundant power,each fan controller card receives 48 vdc from individual load zones on midplane each load zone gets dc power from both the a and b power shelves. upper fan tray powered from “a” bus on one fan controller card and from “b” bus on second fan controller card two dc-to-dc converters, one on each fan controller card, control a single fan,s123 switch fabric card,plim,plim,msc,msc,ingress,egress,ip data,ip data,linecard chassis,switch fabric card,1 of 8,s2,s2,s3,s3,s1,s1,s123 switch fabric card,s123 switch fabric card only used in single-chassis systems major components of s123 switch fabric card are: switch elements that perform switching functions service processor power modules status led alphanumeric display s1, s2, and s3 elements perform switching functions and are programmed at system startup by ios xr fabric management software each s123 switch fabric card contains two s1, two s2, and four s3 elements.,s123 functional blocks,slots 0-7 ingress from mscs slots 8-17 (to fabric),egress to mscs and rps (from fabric),note: slots 16 & 17 are the active and standby rps,s123 physical overview,status led,alpha,route processor (rp) overview,the rp combines system controller functionality with route processing capability each 16-slot 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 lower plim card cage distribute forwarding tables to the line cards provide a control path to each msc provide the system-monitoring functions contain the hard disks for system and error logging,rp front panel and memory options,memory modules,smp cpus,rp ide hard drive: used for storing debug info, such as, core dumps from rp or mscs typically only active when needed hot-pluggable and sled mounted,pcmcia flash slots,pcmcia flash each rp provides two ata type pcmcia flash slots to store up to 1 gb storage systems disk0: is fixed and used for permanent storage of configuration and image files required for operation of os disk1: is an externally accessible media slot,rp block diagram,pcmcia 2,ide,q links,lc fe links,ctl ge link,ctl ge link,midplane,pci,aux and console,management ge link,card presence detect rp mastership prom presence,rp block diagram (cont.),pcmcia 2,ide,q links,lc fe links,ctl ge link,ctl ge link,midplane,pci,aux and console,management ge link,card presence detect rp mastership prom presence,route processor (rp) active and standby arbitration,the active-standby arbitration algorithm performed by hardware and software: at chassis power up, each rp boots and runs self-tests. the 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. based on results of these tests, each rp decides whether it is ready to become the active rp. if it is, it asserts “ready” signal to its on-board arbitration unit that propagates “ready” signal to other rp. arbitration 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. software on each reads its “active” signal, and branches accordingly to “primary” or “standby” code. if active rp is removed, powered down, or voluntarily de-asserts its “ready” signal, standby rp immediately receives an asserted “active” signal, along with an interrupt.,目录,crs-1介绍 crs-1 ios-xr介绍 crs-1 ios-xr基本配置 crs-1 ios-xr 软件安装介绍 crs-1 ios-xr 安全配置 crs-1 ios-xr 路由协议配置 crs-1 ios-xr rpl配置介绍,cisco ios xr architecture,distributed infrastructure,runs on multiple cpus,high-availability (ha) components,kernel plane separation fault tolerance and isolation checkpoint support for process restart process-level redundancy route processor and distributed rp failover nonstop forwarding,kernel,memory-protection, message-passing, pre-emptive modular software design all basic os and router functionality implemented as processes process model with separate, protected address spaces,microkernel: threads scheduling debug timers,message queues,synchronization,distributed processing,file system,lightweight messaging,event management,c,i,s,c,o,p,o,s,i,x,applications,plane separation,microkernel,process mgmt,ipc mech.,memory mgmt.,h/w abstraction,memory-protected microkernel,distributed subsystems/processes,system services,control plane,fault tolerance and isolation (for print),layered rather than monolithic architecture,fault isolation and protection between the planes,cisco ios xr,fault tolerance and isolation,layered rather than monolithic architecture,fault isolation and protection between the planes,cisco ios xr,checkpoint support for process restart,process,checkpoint shared memory store,updates of running state,new instance of process,recover state,active rp/drp,process-level redundancy,standby process,active process,active service-providing process,standby process,active process uses a checkpoint database to share running state with standby,client,client,client,clients use active service-providing process,process-level redundancy (cont.),1. active process fails,client,client,client,5. clients use new active service-providing process,4. new active starts sending updates to standby process,active process,standby process,new active process,3. new standby process is started,2. standby process becomes active,print only!,1. active process fails,client,client,client,5. clients use new active service-providing process,4. new active starts sending updates to standby process,active process,standby process,new active process,3. new standby process is started,2. standby process becomes active,process restart and recoveryrp failure,process a: checkpoint data sent to standby peer continually process b: checkpoint data mirrored to standby card process c: no checkpointing - process c started on standby card process d: no checkpointing - no process d started on standby card,process a,process b,process c,process a,process b,process c,process,d,active card,standby card,rp and drp failover (for print),active rp,standby rp,checkpointed,rp failure,if no standby drp exists, no checkpointing,active drp,standby drp,active drp,drp failure,checkpointed,not checkpointed,rp and drp failover,active rp,standby rp,checkpointed,rp failure,if no standby drp exists, no checkpointing,active drp,standby drp,active drp,drp failure,checkpointed,not checkpointed,nonstop forwarding,paired rps or drps each lc has dedicated packet forwarding hardware (pse) packet forwarding is not affected by: isis, ospf, bgp, mpls, multicast process restart infrastructure process restarts rp failover,lc,lc,rp,rp,but fwding ok!,active,active,standby,print only!,paired rps or drps each lc has dedicated packet forwarding hardware (pse) packet forwarding is not affected by: isis, ospf, bgp, mpls, multicast process restart infrastructure process restarts rp failover,lc,lc,rp,rp,but fwding ok!,active,active,scalability features,adjacency management forwarding information base tables distributed interface management distributed configuration management two-stage forwarding,adjacency management,adjacency information base,modular services card (msc),arp/map tables,interface manager,rp,two-stage forwarding,what is two-stage forwarding? forwarding lookup is done twice ingress side lookup returns information to forward packet to correct outbound msc and physical interface egress side lookup gets correct interface and adjacency information why two-stage forwarding? scaling with the number of cards/interfaces in a crs-1, the amount of forwarding information for each msc must be limited entire layer 2 adjacency information is not required on all cards example: feature scaling input acls on ingress cards output acls on egress cards,forwarding information tables,msc-cpu,rp or drp,switch fabric,msc-pse,interface driver,msc,distributed interface management,rp,interface manager,interface driver,msc,interface manager,interface manager,interfaces,interfaces,interface manager global database,interface driver,distributed configuration management,rp,configuration manager,running config,config database,second stage,first stage,target config,new running config,+,two-stage configuration,=,stage 1: make configuration changes create new target config by entering config,stage 2: make changes persistent,running config,rp “disk0:”,running config plus changes,configuration file system,new binary configuration created; router uses it to boot up following reload,access and login,ios xr router access: direct connection to console port terminal server connected to the console port telnet or ssh (v1 or v2) login root-system user defined at initial install assigned username and password,user access verification username: password: rp/0/rp0/cpu0:p1#,command modes,management ip interfaces,cisco crs-1 management ethernet interfaces mgmteth0/rp0/cpu0/0 mgmteth0/rp1/cpu0/0,management ip interfaces (cont.),ipv4 virtual address host address on management network must be on same subnet as ethernet management interfaces provides sustainable mac address in the event of rp failover only for management loopback interfaces,configuring management ethernet,interface mode set the ip version ipv4 or ipv6 address mask activate the interface,rp/0/rp0/cpu0:router#configure rp/0/rp0/cpu0:router(config)#interface mgmteth0/rp0/cpu0/0 rp/0/rp0/cpu0:router(config-if)#ipv4 address 12.9.42.105/16 rp/0/rp0/cpu0:router(config-if)#no shut rp/0/rp0/cpu0:router(config-if)#,configuring loopback address,interface command assign ip address visible as interface,rp/0/rp0/cpu0:router(config)#interface loopback0 12.9.42.110/16 rp/0/rp0/cpu0:router(config-if)#,configuring ip virtual address,ipv4 command assign ip address only visible in rib,rp/0/rp0/cpu0:router(config)#ipv4 virtual address 12.9.42.125/16 rp/0/rp0/cpu0:router(config)#,hostname,create a hostname,rp/0/rp0/cpu0:router(config)#hostname p1 rp/0/rp0/cpu0:router(config)#,configuring network interfaces,set clock source first controller interface command rack/slot/module/port assign ip address activate the interface,rp/0/rp0/cpu0:router(config)#controller sonet 0/4/0/0 rp/0/rp0/cpu0:router(config-sonet)#clock source internal rp/0/rp0/cpu0:router(config-sonet)#exit rp/0/rp0/cpu0:router(config)#interface pos 0/4/0/0 rp/0/rp0/cpu0:router(config-if)#ipv4 address 12.9.44.5/24 rp/0/rp0/cpu0:router(config-if)#no shut rp/0/rp0/cpu0:router(config-if)#,commit,target changes must pass semantics pass; all changes are committed fail; no changes are committed,rp/0/rp0/cpu0:router(config)#commit rp/0/rp0/cpu0:p1(config)#,exit or end configuration mode,exit configuration mode,end configuration mode,rp/0/rp0/cpu0:p1#configure rp/0/rp0/cpu0:p1(config)#interface pos 0/5/0/1 pos crc 16 rp/0/rp0/cpu0:p1(config-if)#exit rp/0/rp0/cpu0:p1(config)#exit uncommitted changes found, commit them before exiting(yes/no/cancel)? cancel:yes rp/0/rp0/cpu0:p1#,rp/0/rp0/cpu0:p1#configure rp/0/rp0/cpu0