Manuale d’uso / di manutenzione del prodotto 7190 del fabbricante Intel
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Intel ® NetStructure™ 7190 Multi-Site Traffic Director User Guide.
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Intel® NetS tructure™ 7190 Multi-Site T raffic Director v .3.1.1 User Guide.
T echnical Product Notice Informatio n in this docum ent is provided in connec tio n with Intel® products . No license, express or imp lied, by estoppel or o therwise, to any intel lectual pr operty rig hts is granted by this document .
T able of Content s Chapter 1 Introduction 1 What is an Inte l ® NetS tructure ™ 7190 Multi-Site Director? . . . . . . . . . . . . . . . . . . 1 Two Versions of the 7190 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intel ® NetStr ucture ™ 7190 Multi-Si te Traffic D irector Use r Guide ii Chapter 3 CLI Configuration 17 Custom/Manual Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Adding Secondary 7190(s) . . .
Table of Contents iii Chapter 7 SNMP Su pport 133 Standards Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Intel ® MIB Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intel ® NetStr ucture ™ 7190 Multi-Si te Traffic D irector Use r Guide iv Appendix D Terms and Conditions and So ftware License 169 Glossary 177 Support Services 181 Index 185.
Intr oduction What is an In tel ® NetS tructure ™ 7190 Multi-Site Director? The Inte l ® NetStruc ture ™ 7190 Mult i-Site Tr affic Direct or is a global site balan cer.
C H A P T E R 1I n t e l ® NetStructure ™ 71 95 Mult i-Site Traffi c Director User Guide 2 Scal ability The 7190 c an work coope r ativel y with up to fifteen o t her 7190s in deployment across sites.
C H A P T E R 1 User Guid e Summary 3 • CLI Configuration Instructions on ho w to use the Command Line Interface (CLI) to manually configure additional sites, agents, zo nes, and services.
C H A P T E R 1I n t e l ® NetStructure ™ 71 95 Mult i-Site Traffi c Director User Guide 4 Notes.
Theory of Operations NOTE: Intel L oad Balanc er r efer s to ei ther Intel®Ne tStructure ™ 7180/718 5 e-Commerce Directors or the Intel®Ne tStructure ™ 7140/714 5/7170/7175 Traffic Directors. Typical l oad balancer s work by b alancing t raffic over a Loc al Area Network (L AN) to a Web f arm.
C H A P T E R 2I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 6 “ Intelligent ” DNS The 7190 leverages the DNS arch itecture a nd protocol as the basis for its site balanci ng operati ons.
C H A P T E R 2 Traditional DNS 7 Multi -S ite Load Ba lancin g Authoritative DNS S ervers The DNS maps, or “ reso lves ” host name s into IP addres ses. It is , in effect, a distribut ed database o peratin g through a d istributed, hierarchical syste m of Domain Name Servers.
C H A P T E R 2I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 8 4. The client DNS server sends a query to the mst d-ex.com Authoritati ve DNS serv er to resolve www .mstd-ex.com . 5. The Authoritat ive DNS server resp onds to the client DNS server with the IP address of www .
C H A P T E R 2 Typical Configuration 9 Multi-Site T raffic Ma nagement Without NetStructure Load Balancers The 7190 can suppo rt data cent ers, whether or not they have an I ntel Load Balanc er.
C H A P T E R 2I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 10 Site Balancing Methods The 7190 su pports six si te-balanci ng metho ds or algorit hms.
C H A P T E R 2 Site Balancing Methods 11 fulfillm ent of a spec ific type or types of tr affic as being cruc ial to their busi ness goal s. (A vailab le with the 7 140/7170, 7 180 2.3 release.) • Least Connections - The Lea st Connectio ns method sends requests to the si te with l owest number of connectio ns.
C H A P T E R 2I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 12 load poten tial of the se rv ers undern eath the loa d balancers it monitors.
C H A P T E R 2 Partial Failure s 13 Status: OK This state indicate s that the require d serv ices behind this serv ice are available on the assoc iated load balancer. The metrics information for this service are current and can b e used for metric loa d balancing.
C H A P T E R 2I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 14 Multiple VIP Res ponse The DNS response fr om a 7190 may c ontain multiple answers. Th e number of an swers and wheth er to incl ude stand-by VI Ps can be config ured.
C H A P T E R 2 Definitions 15 Primary 7 190 is a 7190 t hat automati cally tr ansfers (copi es) config uratio n informat ion to seco ndary 7190s (through t he Glob al Sync process) . Configurat ion may onl y be changed on a Primary 7190. Service i s the Virtu al IP (V IP) and por t number of an appl ication service availa ble at a site .
C H A P T E R 2I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 16 Notes.
CLI Configuration Custom/Manual Co nfigurat ion You can manually change any spec i fic conf iguration parameters if any of the Quick Start Wizard defaul t settings are not sufficient for your site.
C H A P T E R 3 Intel ® NetStructure ™ 7190 Mu lti-Site Tr affic Directo r User Gu ide 18 Sample N etwork Topo logy Adding Secondary 7190(s) Now that the p r imary 7190 is up and running , the additional 7 190s can be e asily added by configur ing them a s secondary 71 90s.
C H A P T E R 3 Custom/Manual Configuration 19 NOTE: User-entered names and IP a ddresses in the example are for illus tra tive purp o ses only . The appro priate values for you r inst alla tion m ay vary . # confi g dns s econ dary 10 .54. 67.2 Warnin g: Y our cur rent dns c onfi guratio ns wil l be lost .
C H A P T E R 3 Intel ® NetStructure ™ 7190 Mu lti-Site Tr affic Directo r User Gu ide 20 NOTE: The 7190 must be autho r ita tive for this zone — the ex isting DNS server should delegate the domain t o the 7190. Creating Authority Re cords Next, auth ority re cords for your two 7190s are c r eate d.
C H A P T E R 3 Custom/Manual Configuration 21 Creating Hosts Next, the host name www.somedomain.xy z- ex.com is creat ed: 7190/c onfig /dns/z ones/ somedo maine x.xyz- ex.com # hostname s cre at e www Create Host name S ucces sful The next step is to map the services www.
C H A P T E R 3 Intel ® NetStructure ™ 7190 Mu lti-Site Tr affic Directo r User Gu ide 22 NSLookup The nslookup utility can verify that the 7190 is correctly resolving www.somedomain.xyz-ex.com : Intel 7190# nslook up www.so medom ain.xy z-ex. com Server : ser ver1.
C H A P T E R 3 Custom/Manual Configuration 23 The number of a dditional answers i n a response ca n be configur ed. The range is from 0 to 15. 7190# c onfig dns z ones somedo main.
C H A P T E R 3 Intel ® NetStructure ™ 7190 Mu lti-Site Tr affic Directo r User Gu ide 24 Notes.
Multi-Site Scenarios Scenar io 1 One Web site, t wo geog raphical s ites (one s erver each), two 7190s, o ptional 71 10s Intr oduction An e -commerce company with a single Web site ( www.
C H A P T E R 4I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 26 changed to Flash Response Mode to d eliver the site that has th e least networ k latency to potenti al customers.
C H A P T E R 4 Scenario 1 27 The 7190 at the westcoasts ite is t he prim ary 7190. Except i n very rare cases th ere should only be one primary 7190. All o ther 719 0s in the network sho uld be secondaries so th ey can slave their configurati ons to the p rimary 7190 .
C H A P T E R 4I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 28 impracti cal, so the so lution is to make t he 7190s auth oritative for a zone within th e mstd-ex.com domain, rathe r than for the entire domain. For this exampl e t he au thoritat ive name serv er for the mstd- ex.
C H A P T E R 4 Scenario 1 29 Step 5. Map Services to Hostname. DNS is essential ly a means of mapp ing hostna mes to IP ad dresses. The 7190 tak es this mapping one step f urther b y allowing t he mapping of h ostnames to services (IP address a nd service port).
C H A P T E R 4I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 30 Step 7. Configure the Secondary 7190. Configurat ion of secon dary 7190s is very easy. First you use the Boot Monito r to confi gure the hardwar e and networ k infor matio n (see the chapter on Installa tion, St artup and Configuration ).
C H A P T E R 4 Scenario 1 31 Part 2 – Changing t o Flash Response Mode Balancing Key Concepts: • Flash Response Mode • Associating 71 90s with a sit e Procedure Now that th e 7190 is configu red and functionin g properly i t is time to modify th e configuration to use Flash Resp onse Mode bal ancing instead of Weighted Round Robin.
C H A P T E R 4I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 32 Part 3 – Adding Lo ad Balancers to an Existing Site Key Concepts: • Adding a Load Balanc er (A gent) .
C H A P T E R 4 Scenario 1 33 ISV Gro ups and Se rvices Step 1. Add the load bal ancers a nd their se rvices to t he 7190 configuration. The 7190 a llows agents (lo ad balancers) and ISV Groups and t heir services to be added pr ior to their availability.
C H A P T E R 4I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 34 If a serv ice is disa bled indi viduall y, but th e agent/ISV Gr oup is lef t enabled then n o referrals are made to that service, but communication is attempt ed to the services associ ated agent /ISV Group.
C H A P T E R 4 Scenario 1 35 Step 3. Delete the first s ite to transi tion ov er . For th e purpose s of this s cenario, th e eastco astsite conv erts ove r first. By delet in g the site (deletin g the sites ISV Gro up) , th e 7190s makes all new refe rrals to the remai ning sites.
C H A P T E R 4I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 36 Step 7. Bring th e new “ westco ast bro ker ” hardware on line. After th e commit, the si te known as “ west coastsite ” no lon ger receives traffic fro m new referra ls.
C H A P T E R 4 Scenario 2 37 Scenar io 2 Multiple sites, server farms , multiple hostna mes, multiple 7190s, g eneric (n ot Intel) lo ad balan cer A large comp a ny with m ul tip le division s wants to inte grate most o f those di vision Web sit es onto server f arms located at two new geograph ically d ispersed data c enters.
C H A P T E R 4I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 38 • Different Site Co mbina tio ns for Ea c h Hostname • Diff erent Balanci ng Methods f or Eac h Hostname • Associating S ervices with Hostnames Procedure Step 1.
C H A P T E R 4 Scenario 2 39 • Create Site 1 a nd associate se rvices: config dns agents create site 1 ip 1 0.1.1 .2 site1 flash- src 1 0.1.1. 1 flash- backu p- src 10. 1. 1. 3 servic es create 10.1 .1.100 :80 create 10.1 .1.100 :443 create 10.1 .1.
C H A P T E R 4I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 40 • Create Site 2 a nd associate serv ices: config dns agents create site 2 ip 1 0.1.2 .2 site2 flash- src 1 0.1.2. 1 flash- backu p- src 10. 1. 2. 3 servic es create 10.
C H A P T E R 4 Scenario 2 41 • Create Backup Sit e and associat e services config dns agents create back upsite ip 1 0.1.4. 2 backup site flash- src 1 0.1.4. 1 flash- backu p- src 10. 1. 4. 3 servic es create 10.2 .4.100 :80 create 10.2 .4.100 :443 create 10.
C H A P T E R 4I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 42 Step 2 . Create ISV Group for the generic (not Intel) brokered site and associate it s service . This site is a le gacy site wi th a generic loa d ba la ncer.
C H A P T E R 4 Scenario 2 43 Site 3 Step 3. Creat e the deleg ated zones f or the hostnames a nd the auth ority recor ds for e ach zone. Since 7190s are dep l oyed at ever y site there is no reason to not ut ilize all of them to their fu ll capab ilities .
C H A P T E R 4I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 44 create -auth or ity ns5 .m st d-ex .c om ip 10. 1. 1.5 config dns zones create div2 .mstd- ex.co m div2.m std-e x.com create -auth or ity ns1 .m st d-ex .c om ip 10.
C H A P T E R 4 Scenario 2 45 balan cing (Ric h Mode) can p l ace a heavy burden on the loa d balancer s. This is i deal fo r balancing by CPU Utilization. L ayer 4 load bal ancing is t ypicall y many short du ration connectio ns. In this case response t ime can be used as a di rect measure of t he actual se r ver farms load in g.
C H A P T E R 4I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 46 map site1 :10. 1. 1.102 :2 1 map site2 :10. 1. 2.102 :2 1 map backu psit e: 10.1. 4. 10 2:21 backup site: 10.1.4 .102: 21 sta ndby Step 5. Add host f or second zone and map it s services.
Boot Monitor The Intel 7190 Boot M onito r Command Li ne Int erface (CLI) allows you to co nfigur e boot opt ions and manag e boot configurat ion file s. Typicall y, the Boot Monit or is us ed only d uring in iti al confi gurati on or major re configur ations, shoul d the latt er become necessa ry.
C H A P T E R 5I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 48 System Re quire m e nt s You can use any terminal or personal computer with a terminal emulator as the CLI comman d station. The terminal must have t he following feat ures: • 9600 bits per second , 8 data bits, 1 sto p bit no p arity , no flow control.
C H A P T E R 5 Boot Monitor Command Reference 49 Command Description autoboot Use t his command t o enable or di sable the Autoboot f unction . When Autoboot is enable d, during st artup th e 7190 prompts you to pr ess a key to ente r the Boot Monitor command l ine interface.
C H A P T E R 5I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 50 boot NOTE: User- entered na m es and IP addresses in the example are for illus trative p urposes only . The appropriat e values for your install ation may vary.
C H A P T E R 5 Boot Monitor Command Reference 51 dir This command displays the l ist of saved boot co nfiguration files. Example: monitor> dir File name ----------- *default.cfg dhcp This command allows you to enabl e or disa ble the use of DHCP by the 7190.
C H A P T E R 5I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 52 factory_ reset NOTE: factory _reset does not delete saved config uratio n files. CAUTION: This command rewrites the de fa ult config uratio n to the defaul t.
C H A P T E R 5 Boot Monitor Command Reference 53 help This command lists all Boot Monit or commands or op tionall y display s syntax for a speci fied command.
C H A P T E R 5I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 54 info This command displays the c urrent boot conf iguratio n. Example: monitor> info Current active configuration ---------------------------- Product: 7190 Version: 3.
C H A P T E R 5 Boot Monitor Command Reference 55 netmask Use th is c ommand to specify the n e tmask. Example: monitor> netmask Enter Netmask [255.255.254.0] ---> 255. 255.254.0 nic Use this command to co nfigure network interface card (NIC) paramete rs.
C H A P T E R 5I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 56 settime NOTE: Flash does not work corr ect ly if settime is not config ur ed. Use this comman d to config ure the da te and ti me of the 7190. One way to configur e this is by using the Network T ime Proto col (NTP).
C H A P T E R 5 Boot Monitor Command Reference 57 setup This command init iates the set up proced ure of the 7 190. The system displays promp ts for all inputs n e cessary to init ia li ze system.
C H A P T E R 5I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 58 Notes.
CLI Reference The Inte l ® NetStruc ture ™ 7190 Multi-Site Tra ffi c Director is fully configurable through the Command Line Interface (CLI). Th e CLI is accessible either through Telnet to t he 7190, or the serial port. Commands exist in a logical hi erarchy.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 60 CTRL-A Move inse rtion poi nt to begi nnin g of line CTRL-B Move inserti on point back one char acter CTR.
C H A P T E R 6 Environment 61 Command H istory The 7190 ’ s CLI records recent ly executed comman ds and allows you to revie w th em. history <n> With no parameter <n > specified, histor y displa ys the last ten commands en tered by the use r.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 62 • T ype help < command> for a descri ption of a speci fic command or , if relevant , a list of sub-commands you can en ter from wit hin <comma nd> .
C H A P T E R 6 CLI Command Summary 63 CLI Command Summary This sec tion co ntains d iagrams a nd list s of the 7190 ’ s CLI commands categor ized by f unction. Compl ete deta ils of CLI c ommands appear in the command reference sec tion of this chapter.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 64 Command Tree (Config) info ROOT confi g inf o stat s log prim ary seco ndary dns stats info creat e delet.
C H A P T E R 6 CLI Command Summary 65 Global Syste m Commands ? !<n> o r h<n > !! … | grep … | more arp back ( also box, t op, t opleve l) box (al so back, to p , toplevel) commit all.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 66 File Management Commands cat copy dir get put remove restore restore-verbose save CLI Commands NOTE: The conf ig in fo commands displ ay uncommitted config uration informatio n that is inactive.
C H A P T E R 6 CLI Command Summary 67 software delete software install secondary info secondary any secondary flash secondary list secondary create <IP> secondary delete <IP> ssh info ssh.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 68 log primar y second ary config dns agents info stats metric s metric s <IP addre ss> p ort <p or.
C H A P T E R 6 CLI Command Summary 69 config dns agents <age ntname > ser vices <servi cenam e> info stats enable disabl e standb y weight factor config dns isvgro ups info create <isv.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 70 config dns isvgro ups < isvnam e> se rvices <servi cenam e> info stats enable disabl e standb.
C H A P T E R 6 CLI Command Summary 71 confi g dns zones <zo nename > hostname s <hostn ame> sitese rvice s info stats map unmap confi g dns zones <zo nename > hostname s <hostn a.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 72 Show Commands show c li in fo show s ys info date ntp info second ary i nfo snmp i nfo ssh info logs d is.
C H A P T E R 6 CLI Command Summary 73 show dns zo nes <z one name > ho st names <ho stnam e> sitese rvice s info stats show dns zo nes <z one name > ho st names <ho stnam e> s.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 74 Global System Com mands Command Description ? Displays all the commands at the co mmand level. ! (also h, hist ory ) Displays the co mmand history . Syntax: !<n> where: n is the command index n umber from hist ory list.
C H A P T E R 6 CLI Command Summary 75 dbpr Displays i nformation on th e active configurat ion down to th e agent VIP l evel. This command is useful for assessing the effectiveness of the c urr ent balan c in g settings. Op tions consist of a hyphen and letter followed b y a user -specifi ed paramet er or para meters.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 76 dbpr (cont ’ d) Displays a sing le VIP- the one associated with host www .foo- ex.com whose IP address is 10.234 .2.2 and is o n the load ba lancer at 192.
C H A P T E R 6 CLI Command Summary 77 info Informatio n is display ed o n e page at a time if th e file size is greater than 500 K even when mor e ( ‘ paging ’ ) is di sabled. Thi s info command (at the r oot le vel) displays only current config urations, i .
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 78 n e ts ta t Displays the 7190 ’ s r o utin g tabl es. ping T ests the networ k connec tion to another net working dev i ce. It sends an I CMP packet from th e 7 190 to the tar get device; when i t receive s the packet, it sends a ping reply .
C H A P T E R 6 CLI Command Summary 79 Fil e Mana geme nt Com mands tracerou te Displays th e route t hat packets trav el to the netw ork ho s t. who Displ ays the list o f all users currentl y logged i n. Command Description Global System C ommands Command Description cat Displays co ntents of the specif ied saved co nfigurat ion fi le.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 80 put T ransfers a configuration to th e spec ified re m ote file or di rect ory . If the remote-directory form is used, the remote host is assumed to be a UNIX device.
C H A P T E R 6 CLI Command Summary 81 Configurati on Comman ds Config CLI Commands save NOTE: Username commands are not vali d i n config uration f iles, i.e., save and restor e operatio ns do not i nclude username da ta. Use the command conf ig cli userna me to restore user names and passwords.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 82 info Displays th e status of all v ariables at th e conf ig cli le vel.
C H A P T E R 6 CLI Command Summary 83 more NOTE: If inf ormat ion is greater than 500, 000 bytes, the di splay i s automate d to display one p age at a time. This pagi ng command al lows you t o set sc rolling o f the out put display to one pa ge at a ti me or to cont inuous display .
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 84 telnet-ses sions NOTE: If you set the number of sessions t o 0, you a re dis ablin g all future Telnet sessions to the 7190 .
C H A P T E R 6 CLI Command Summary 85 config cli username NOTE: Username commands are not vali d i n config uration f iles, i.e., save config and re store config ope rations do n ot include userna m e data. Add, change, o r delete the login or password.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 86 Config Sys Commands Command Description config sys Changes the prompt lev el to the System Con fig branch. info NOTE: The d efa ult ro ute is the same as th e defaul t gate way.
C H A P T E R 6 CLI Command Summary 87 config sys sof tware info Displays a ll i mages tha t h ave bee n inst alled in th e 7190. This include s the index number , the produ ct name, the v ersion n umber , the patch number , the build number and the word “ Running ” next to the image that is current ly active on the 7190.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 88 config sys sof tware delete Delete old versions of the software from local storage. It can be used to fr ee local st orage to install a version update or product upgrade.
C H A P T E R 6 CLI Command Summary 89 config sys ssh info Displays the current status of SSH enable or d i sable. If the statu s was just changed, it reflects the changed status that is pending for the reboot . ssh enab le Enables SSH con nections the n ext time the box is reb ooted.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 90 Config Sys SNMP Commands Command Description config sys snmp Changes the prompt level to confi g sys sn mp .
C H A P T E R 6 CLI Command Summary 91 Command Description community c reate Specifies community st rings that the 71 90 accepts on i ncoming SNMP requests.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 92 Config DNS Commands Command Description trap delete Deletes a host fro m the trap receiver li st.
C H A P T E R 6 CLI Command Summary 93 info all Displays a ll DN S informa tion. For example: DNS Information Running as a Primary Logging is Disabled Flash Information: Flash State: Disabled Aliasing : Disabled Polling Interval: 10 Number of Polls: 100 Max Broadcast Delay: 500 Drop Mis ses: 3 Agent: 10.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 94 config dns st ats Di splays the stat us of this 71 90 and any con nected seconda r y 7190s.
C H A P T E R 6 CLI Command Summary 95 log NOTE: Enabling log ging may reduce th e speed of DNS resolutions. Enables o r disables l ogging. When loggi ng is enabl ed, th e DNS server lo gs detail s of the inc oming qu eries, the ba lancing process for VIP se lection, and the query response to the log fil e.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 96 Config DNS Agent s Commands Command Description info Displays t he confi guration i nformatio n of all agents in the 719 0. Each 7190 may have up to 16 agent s configu red.
C H A P T E R 6 CLI Command Summary 97 config dns agent s metrics Displays metrics information of all configured agents. If an IP address and a po rt number are specified , metrics for that a gent is obta ined.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 98 config dns agent s rename <agentname> ne w <agentname> Changes the agent ’ s curre nt name to th e name sp ecified in the command li ne.
C H A P T E R 6 CLI Command Summary 99 config dns agent s <agentname> metrics Displays me tric informat ion for the sp ecified agen t. Syntax: config dns agents <agentname> metrics where: agentn ame is the name of the agent whose metrics you want to display .
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 100 config dns agent s <agentname> flash-s rc <ip address> NOTE: At least one of t he (up to 5) uniq ue flash- source addresses must be the IP ad dress of the 7190 itself.
C H A P T E R 6 CLI Command Summary 101 agent-ip <agentip> Configures the IP address of the co rr esponding agen t name. enable Enables communicatio n with the agen t. Default: en abled. disable Disables the agent. Se r vices con figu red un der t hese a gents are n o longer ava ilable for re so lution.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 102 enable Enab le s all service s fo r all hosts whic h c urrently m a p to them . disable Disables a ll se rvices for a ll h osts which c urrently map to them.
C H A P T E R 6 CLI Command Summary 103 Config DNS ISV Group s Command st andby Sets the mode of a service t o standby for a ll hosts that currently map to it . Command Description Config DNS A gents Command s Command Description config dns isvgroup s Moves to th e co nfig dn s is vg ro ups command level.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 104 config dns isvgroup s <isvname > Move t o the c ommand level of a spe cific ISV g roup. info Displays inform ation of t he ISV group specified by the ISV name.
C H A P T E R 6 CLI Command Summary 105 flash-back up-port <port#> Confi gures the port numb er with which the backup f lash sour ce communic ates with its k nown peers. The de fa ult port num ber is 2000. config dns isvgroup s <isvname > ser vice s Moves to th e ISV services c ommand le vel.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 106 Config DNS Zones Commands info Displays in formation, a nd limits inform a tion to on e specified service. For example, a display coul d be: Service: 10.10.
C H A P T E R 6 CLI Command Summary 107 config dns zones info Displays the n ames of all confi gured zones und er this 7190. T o display the names of committed z ones only , use the command show dn s zones info . Example: Zone: zone1.com Authority Records TTL: 86400 Zone: zone2.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 108 delete NOTE: This command also del etes all h osts and VIPs conf igured under t he zone to b e deleted.
C H A P T E R 6 CLI Command Summary 109 config dns zones st ats Di splays the statisti cal information of t he specified zone . Syntax: config dns zones <zonename> stats where: zonena me is the name of the zone whose statistical information you wish to vi ew .
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 110 config dns zones <zonename> authority- ttl NOTE: If all aut hority records are delet ed under a specified zon e, the auth or i ty TTL is res e t to the defa ult of 7200 seconds (two hours).
C H A P T E R 6 CLI Command Summary 111 config dns zones <zonename> hostnames st ats Displays sta ti stics inform a tion of a ll h osts confi gured u nde r the specifi ed zone. Each hostname with its corr esponding nu mber of resolution s is displayed.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 112 config dns zones <zonename> hostnames dele te < atypeh ostn ame> Deletes the spe cified host under th e specified zone. Al l VIPs configured under t he specified host are d eleted as well.
C H A P T E R 6 CLI Command Summary 113 config dns zones <zonename> hostnames <hostname> info Displays the sp ecified host ’ s configurat ion information.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 114 ttl Configures the Ti me to Live (TTL ) value, in se conds, for the specified z one/host. TTL is exp ressed an integer great er than or equal t o zero and less t han or equ al to 65,535.
C H A P T E R 6 CLI Command Summary 115 authority If enabl ed, desig nates this 7190 as authoritative for t he specifi ed host. Defaul t: enabl ed. Syntax: config dns zones <zonename> hostnames .
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 116 map <site servicename> Maps the co mbination of an agent and a service or an ISV name and service with the speci fied hostn ame.
C H A P T E R 6 CLI Command Summary 117 Config DNS Flash Commands Command Description config dns flash Moves to the f lash command level. config dns flash info Displays fl ash config uratio n informat ion.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 118 config dns flash max-delay Sets the maximum time delayed befor e a response is returne d, setting th e maxi mum to lerated network la tency betwe en peer Flash agen ts.
C H A P T E R 6 CLI Command Summary 119 Show C omman ds Command Description show cli info Displays the CL I configurat ion. Information displa yed: • Number of concurrent T e l net sessions allowed .
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 120 show sys snmp info Displays the status of th e SNMP-related variables.
C H A P T E R 6 CLI Command Summary 121 sof tware info Displays informati on regarding installed software. The list of i nstalled sof tware ima g es includ e s: • Image index n umber of each instal .
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 122 flash info Displays fl ash informat ion, incl udin g whether fl ash aliasin g is on or off.
C H A P T E R 6 CLI Command Summary 123 show dns st ats Di splays DNS statistical information: • Queries - T otal number of DNS queri es received. • Referrals - T otal numbe r of times t hat a p articular serv ice or group of servic es have been returned as t h e answer to a query .
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 124 show dns zones info Displays the n ames of all commi tted zone s of this 7190, and th e T ime-to-Live (TTL) of their authority records. For example: Zone: mysite-ex.
C H A P T E R 6 CLI Command Summary 125 st ats Di splays all th e hostnames and their n u mber of queries and referrals. Syntax: show dns zones <zonename> hostnames st ats Information displa yed: Host: host1.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 126 st ats Di splays statistics for al l committed agents .
C H A P T E R 6 CLI Command Summary 127 show dns agent s metrics <agentname> por t <port #> Displays metrics for t he specified unconfigured agent. If specified agent does not exist or if a con nection ca nnot be esta blishe d, an error message appears.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 128 show dns agent s <agentname> info Displays in fo rmation abo u t the speci fie d agent. Information displa yed: Agent: loa d1 State: En ab le d Me tr ic s In te rv al :3 0 Me tr ic s Ti me ou t: 15 Agent IP : 1 0.
C H A P T E R 6 CLI Command Summary 129 show dns agent s <agentname> metrics Displays metric s information for a single spe ci fied agent . Syntax: show dns agents <agentname> metrics Info.
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 130 show dns agent s <agentname> metrics <ip addres s> port <port#> Displays metrics for t he specified unconfigured agen t. If specified agent does not exist or if a con nection ca nnot be esta blishe d, an error message appears.
C H A P T E R 6 CLI Command Summary 131 show dns isvgroup s info Displays the l ist of all ISV groups, their states, flash in f ormation, probe information an d the services c onfigured for them. For example: ISV Grou p: isv 2 State : Enabled Pr obe Inte rval:30 Pr obe Time out:15 Primar y Fl ash Sr c:10 .
C H A P T E R 6I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 132 show dns isvgroup s <isvname > ser vice s <svcna me> info Displays service info rmation for the speci fic service under t he specific ISV Group.
SNMP Support The Inte l ® Ne tS tructure ™ 7190 Multi-Sit e Traffic Di rector has a fully complian t , embedded SNMP agent t hat supports SNMPv1 and SNMPv 2 requests. In addition to standa rd MIB-II, Intel private enterprise MIBs provide th e capab ilities t o mon itor the pe rfo rmance and healt h of the 7190.
C H A P T E R 7I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 134 MIB Tree (top level) All Intel ente rprise MIBs and MIB objects are defined under the mib2 ext branc h of the In tel ® tree. All sysObjectIds that identify Intel pr od uct s ar e defi ned unde r the directors br anc h of t he M IB tree.
C H A P T E R 7 Where to find MIB Files 135 The standard SNMP traps, coldStart , warmStart , authenticationfailure , linkUp and linkDown are supported. ceo-hea der .my ceo-header.my contains the o bjects that defi ne the top-leve l branches of th e MIB tree.
C H A P T E R 7I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 136 isvTable isvEntry isvIndex isvVipAddr isvVipPort isvProbeType isvProbeState isvProbeProperties siteTable siteEntry siteIndex siteName Agent Metrics Grou p Object Descrip tion agentMe tricsT a ble An agent r uns in a l oad bala ncer (i.
C H A P T E R 7 Service M etrics Gro up 137 Service Metrics Group ISV Metrics Grou p Object Descrip tion serviceMe tricsT able An agent runs in a load bala ncer which communicat es with the MSD 9000.
C H A P T E R 7I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 138 Site Group isvVipPort Server T CP port numb er . isvProbeT ype ISV probe type can b e Ping or TCP or HTTP .
C H A P T E R 7S N M P T r a p s 139 SNMP T rap s The followi ng list su mmarizes the tr aps genera ted by the 7190. Fo r details abou t a particular trap , please read the descripti on of each MIB above, or read t he documentation w ithin the MIB file.
C H A P T E R 7I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 140 s5emt1 03.my , s5roo 1 1 4.my, s5tcs11 2.my, syn ro167.
C H A P T E R 7 Displaying SNMP Parameter s 141 • The backpl ane type of the sender , for the 7190 this is enetFastEnet (10). • Local segment in dication. This indicates whether the sender is on the same ethernet segment or across a brid ge. • The current state o f t he auto-topology packet ’ s sender .
C H A P T E R 7I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 142 The followi ng CLI commands a re used to displa y and configur e SNMP community strings.
C H A P T E R 7 Configuring Ot her SNMP Parameter s 143 This command causes trap s to be sent to IP address 209. 218.240.5, and causes the 7190 SNMP agent to put the community string NOC1 in the tra p .
C H A P T E R 7I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 144 Notes.
Sof tware Up dates Your Intel ® NetStruc ture ™ 7190 Multi -Site Traffic Di rector unit is shipp ed with th e la test s yste m so ftwar e inst alled. Af ter init ial installat ion and setup, you may be eli gible for, or choose to pur chase a software version updat e.
C H A P T E R 8I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 146 distrib ution con sist s of a single lar ge binary file o f approx imatel y 20 megabytes. The first step in software installat ion is to place this install image file on an ftp serv er accessible by t he 7190.
C H A P T E R 8 Rebooting with the New Image and Ver if ying Installation 147 Rebooting with the Ne w Image and V erify ing Inst allation NOTE: If any errors occurred during inst alla tion, show sy s softwa re may display the image as installed , howe ver i t is not sa fe to use.
C H A P T E R 8I n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 148 Notes.
Diagnostics This section desc r ibes the avai lable diagn o stic information and in- field di agnostics p rocedures f or the 7190. Diagnostic LEDs The fr ont pa nel ’ s LEDs provide info rmation generated by the boot- time power- on-self- test (POST) and appl ication startup sequences.
A P P E N D I X AI n t e l ® NetStructure ™ 71 90 Multi-Sit e Traffic Dir ector User Guide 150 Power Indication The fron t panel Po w er LE D connects directly t o the unit ’ s power supply. If th e Power L ED is not i ll uminat ed, power is not connected to the un it , or the uni t ’ s power supply has fail ed.
A P P E N D I X A Runtime LED Diagnostics 151 Runtime LED Diagno stic s Runtime Act ivity At runtime, the L EDs provide information abo ut system activity as described bel ow. St atus LED • Blink s on and of f quickly wh en operatin g normally . • Continuou s on or of f indicates tr oubled ( hung) system.
A P P E N D I X AI n t e l ® NetStructure ™ 71 90 Multi-Sit e Traffic Dir ector User Guide 152 System Lo g The system log contains diagnostic messages from v arious software modules of t he 7190. Th e system log memory is of l imited size (5 12K bytes) and wraps around when the allocate d space has been fil l ed u p.
A P P E N D I X A System Log 153 DNSD: The DNS Server Daemon process This proce ss lo gs a message wh e n it is started and wh en reading i n the configurati on. Severe or fa tal errors are logged with a preceding “ ERROR ” . Others messages may be lo gged with or wi thout “ WARNING ” based on the natur e of the event .
A P P E N D I X AI n t e l ® NetStructure ™ 71 90 Multi-Sit e Traffic Dir ector User Guide 154 NCA (Network Configuratio n Application) This process is i n charge of conn ecting to and talking to the age n ts resident o n the 7140/717 0 or 7180 d evices.
A P P E N D I X A System Log 155 Aug 2 12 :13: 33 mada gasc ar BACKE ND: R eading in config urati on... Aug 2 12:1 3:33 madagasc ar BAC KEND: ** *Back end is ready fo r the use r* When there is an error readin g the confi guration file, these errors are logged spe cifying the error an d the line where it occurred.
A P P E N D I X AI n t e l ® NetStructure ™ 71 90 Multi-Sit e Traffic Dir ector User Guide 156 Notes.
Cleaning the Dust Filter The Inte l ® NetStru cture ™ 7195 Multi-Site Traffic Director has a du st filter el ement mo unted behi nd t he f ront g ril le a nd in front of the dual intake fans. T his filter is wash able and shou ld be cleaned eve ry six months at a minimum.
APPEN DIX BI n t e l ® NetStructure ™ 71 90 Mult i-Site Traffi c Director User Guide 158 Notes.
Regulatory Information T aiwan Class A EMI S t atement.
A P P E N D I X C Intel ® NetStructure ™ 7190 Multi-Si te Traffic Direc tor User Gu ide 160 VCCI S t atement Class A ITE This is a Class A product ba sed on th e standard of the Voluntary Control Council for Int erference by Information Technology Equipmen t (VCCI).
A P P E N D I X C Canada Compliance Statement (Indust ry Canada) 161 • T o the extent possible, rel ocate the radio, T V , or other recei ver away from the product . • Plug the prod uct into a di f ferent elect rical outlet so t hat the product and the receiver are on dif ferent branc h circuits.
A P P E N D I X C Intel ® NetStructure ™ 7190 Multi-Si te Traffic Direc tor User Gu ide 162 CISPR 22 St atement WARNING: This is a Class A product. I n a domestic envi ronment this product ma y cause radio interference in whi ch case the user may be requir ed to take adeq uate measures.
A P P E N D I X C CISPR 22 Statemen t 163 • Isolated fr om strong el ectromagneti c fields prod uced by electrical devices. • In regions that are susc eptible to electrical storms, we recommend y ou plug you r syste m into a sur ge suppressor and disconnect telecommun ication lines to your modem duri ng an electrical storm.
A P P E N D I X C Intel ® NetStructure ™ 7190 Multi-Si te Traffic Direc tor User Gu ide 164 W ARNUNG Das System wurde f ü r den Betr ieb in einer nor malen B ü roumgebung entwicke lt.
A P P E N D I X C CISPR 22 Statemen t 165 • In ar ee s og g e tt e a tem po rali , è consi gliabile c ollegare il sistema ad un limi tato re di corrente . In caso di temp orali, scolleg are le linee di co municazione dal modem. • Dotata di un a presa a muro corret tamente instal lata.
A P P E N D I X C Intel ® NetStructure ™ 7190 Multi-Si te Traffic Direc tor User Gu ide 166 Wi chtige Sicherheit shinweis e 1. Bitte lesen Sie sic h diese Hinweise sor gf ä ltig durch. 2. Heben Sie d i ese Anleitung f ü r den sp ä tern Gebrauch au f.
A P P E N D I X C Wichtig e Sicherh eitshinweis e 167 15. W enn folgende Situa tionen auf treten i st das Ger ä t vom St romnetz zu trennen und vo n einerqualifizierten Servicestelle zu ü berp r ü fen: a. Netzkabel oder Netzstecker sint besch ä digt.
A P P E N D I X C Intel ® NetStructure ™ 7190 Multi-Si te Traffic Direc tor User Gu ide 168 Notes.
T erms and Conditions and Softwar e License Intel Corp oration END USER TERMS A ND CONDITIONS OF SALE AND SOFTW ARE LICENSE IF THE PRODUCT IS PURCHASED DIRECTL Y FROM INTEL AND UNLE SS SU C H P ARTIE .
A P P E N D I X D Intel ® NetStructure ™ 7190 Multi-Si te Traffic Direc tor User Gu ide 170 2. Order s: End User m ay purchase Product by submitting a valid purchase order ( “ Order ” ) to Intel at the corporate address st at ed herein. Orders are sub- ject to Intel ’ s written acceptance ( “ Order Acceptance ” ).
A P P E N D I X D Terms and Conditions and Software License 171 10. T axes an d Duties: End User is responsible for all t axes imposed in connec- tion with sale to End User of Products or services whi.
A P P E N D I X D Intel ® NetStructure ™ 7190 Multi-Si te Traffic Direc tor User Gu ide 172 12. Returns: No Product may be ret urned except under warranty for repair or due to shipment error by Intel.
A P P E N D I X D Terms and Conditions and Software License 173 replace or repair t he product with either a new or reconditioned product, and the returned pr oduct becomes Intel ’ s p roperty.
A P P E N D I X D Intel ® NetStructure ™ 7190 Multi-Si te Traffic Direc tor User Gu ide 174 This warranty does not c over replacement of products damaged by abuse, accident, misuse, neglect, alteration, repair , disaster , improper installation or improper testing.
A P P E N D I X D Terms and Conditions and Software License 175 17. Expor t Law Re gul ations: 17. 1. Applicable Laws . End User acknowledges that all Products , spares, documentation or ot her materi.
A P P E N D I X D Intel ® NetStructure ™ 7190 Multi-Si te Traffic Direc tor User Gu ide 176 19. Copyrights; T rade Secrets: End User acknowledges and agrees that the structure, sequence and organiz.
Glossary This section defi nes terms and acron yms used throughou t the Intel ® NetStructu re ™ 7190 Mul ti-Site Traffic Direct or User Guid e . Agen t Refers t o a load balance r (7140, 7170, or 7.
G L O S S A R Y Intel ® NetStructure ™ 7190 Mult i-Site Traf fic Director User Guid e 178 Flash Respon se Mod e A solution to DNS sit e balan cing ba sed on netw ork latency.
G L O S S A R Y Intel ® NetStructure ™ 7190 Mult i-Site Traf fic Director User Guid e 179 Load B alancer Intel ® 7140, 7170 or 7180 Load Balan cing The distr ibuti on of proce s sing and c ommuni catio ns activity across a computer net work so th at no single device i s overwh elmed.
G L O S S A R Y Intel ® NetStructure ™ 7190 Mult i-Site Traf fic Director User Guid e 180 Aliasi ng The act of tryi ng to app ear as a legitimate packet from a trusted or expected so urce even thou gh the packet ac t ually origi nated at some unknown sour ce.
Support Services Intel ® offers a range of sup port services for your new p r oduct. Yo u can lea rn about the opti ons availab le for your a r ea by visiting t he Intel ® support web site at http://www.intel.com/networ k/ services and choosing your geogr ap hy.
S U P P O R T Intel ® NetStructure ™ 7190 M ulti-Site T raffic D irector Us er Gu ide 182 Indonesia 2 Di al 001-801- 10, await d ial tone , dial 800 -838-7136 Korea 1 Dial 0-91 1, await dial tone, .
S U P P O R T Support Ser vices 183 Switze rland 1 Dial 0-800 -55001 1, await dial tone, di al 800-83 8-7136 United Kingdo m (Mercury) 3 Dial 0500-89-001 1, await dial t one, dial 8 00-838-713 6 Unite.
S U P P O R T Intel ® NetStructure ™ 7190 M ulti-Site T raffic D irector Us er Gu ide 184 Notes.
Index Symbols ! 74 !! 74 * 111, 11 2 ? 74 @ 111, 1 12 A adding l oad bal ancers 32 agen ts 14 assoc iat in g se rv ice s 19 configu r ing dns agents 96 cre ating 19, 38 display ing 12 5 algori thms me.
I N D E X Intel ® NetStructure ™ 71 90 Multi-Sit e Traffi c Director User Guide 186 login- attempts 82 more 83 port 83 prompt 83 scr eenli nes 83 telne t-se ssion s 84 time out 84 username 85 users.
I N D E X Intel ® NetStructure ™ 7190 Mu lti-Site Tr affic Directo r User Gu ide 187 hostn ame si tese rvice s info 115 hostnames 110 hostnames authority 115 hostnames create 111 hostnames delete 1.
I N D E X Intel ® NetStructure ™ 71 90 Multi-Sit e Traffi c Director User Guide 188 config s ys inf o 86, 89 config s ys log s display 86 config s ys log s display- old 86 config s ys sec ondary 88.
I N D E X Intel ® NetStructure ™ 7190 Mu lti-Site Tr affic Directo r User Gu ide 189 arp 74 back 74 box 74 comm it a ll 74 comm it l oca l 74 dbpr 75 exit 76 factor y-defaul t 78 halt 76 histor y 7.
I N D E X Intel ® NetStructure ™ 71 90 Multi-Sit e Traffi c Director User Guide 190 runtime LED diagnos ti cs 15 1 S save command 29 saving configu ration 29 current software confi guration 146 sec.
I N D E X Intel ® NetStructure ™ 7190 Mu lti-Site Tr affic Directo r User Gu ide 191 T Telnet 59, 77, 78, 82, 83 , 84, 119 settin g se s sio ns 84 The 22 W weighted algorit hms 10 Weighted Ra ndom .
I N D E X Intel ® NetStructure ™ 71 90 Multi-Sit e Traffi c Director User Guide 192 Notes.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Intel 7190 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Intel 7190 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Intel 7190 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Intel 7190 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Intel 7190, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Intel 7190.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Intel 7190. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Intel 7190 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
