Cisco Systems 3.6 manuale d’uso

Americas Hea dquarters Cisco System s, Inc . 170 West Ta sman Driv e San Jos e, CA 95134 -1706 USA http://www.ci sco.com Tel: 408 526-4000 800 553- NETS (638 7) Fax: 408 527-0883 Cisco A ctiv e Netw ork Abstraction F ault Management User Guide V er sion 3.6 S er vice P ac k 1 THE SPECIFICATIONS AND INFORMATION REG ARDING THE PRODUCTS IN THI S MANUA[...]

THE SOFTWARE LICENSE AND LIMITED WARRA NTY FOR THE ACCOMPANYING PRO DUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCOR PORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LO CATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTAC T YOUR CISCO REPRESENTATIVE FOR A COPY. The Cisco implem entation of TC P header [...]

iii Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 CONTENTS About Th is Guide vii Obtain ing Documentati on, Obtaining Su pport, an d Security Guide lines vii CHAPTER 1 Fault Manage ment Overview 1-1 Managing Events 1-1 Basi c Conc epts an d Ter ms 1-2 Alarm 1-2 Event 1-3 Event Seq uence 1-3 Rep[...]

Cont ents iv Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Correl ating TCA 3-4 CHAPTER 4 Advanced Corr elation Scenarios 4-1 Device Un reach able Alar m 4-1 Connect ivity Test 4-1 Device Fa ult Identif icatio n 4-2 Device Un reach able Exampl e 1 4-2 Device Un reach able Exampl e 2 4-2 IP [...]

Cont ents v Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 CHAPTER 5 Correla t ion Over Unmanaged Segments 5-1 Cloud VNE 5-1 Types of Unmanaged Ne tworks Suppor ted 5-1 Fault Corr elatio n Across the Fra me Relay or ATM or Ether net Cloud 5-2 Cloud Pr oblem Alar m 5-3 Cloud Co rrelat ion Ex ampl[...]

Cont ents vi Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 APPENDI X B Event and Ala r m Correlat ion Flow B-1 Softw are F uncti on Ar chit ecture B- 2 Event Corr elation Flow B-3 Event Cr eation (VNE leve l) B-3 Event Cor relation B-3 Local Corr elation (E vent Corr elator) B-3 Network Co [...]

vii Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 About This Guide This gui de includes the follo wing chapte rs: • Chapte r 1, “Fault Mana gement O verview” —Descri bes how to manage e vents, and in troduces som e of the key concepts of Cis co ANA alarm m anagem ent. • Chapter 2 , ?[...]

viii Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 About Thi s Guide Obtaining D ocumentat ion, Obtaini ng Support, and Security Gui delines[...]

CH A P T E R 1-1 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 1 Fault Management Overview This ch apter de scribes the chal lenge of managin g an ov erab undan ce of e ve nts, and introd uces som e of the key co ncepts of Cisco AN A ala rm m anagemen t. • Managin g Events —Describes h ow t[...]

1-2 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 1 F ault Management Ov erview Basic Conce pts and Ter ms Figur e 1 -1 Eve nt Flood Meetin g the ev ent mana gement cha llenge is done by correlat ing rela ted ev e nts int o a sequenc e that represen ts the al arm lifecyc le, and u s[...]

1-3 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 1 Fault Manage ment Overv iew Basic Concep ts and Ter ms • Card out • An alarm is comp osed of a seq uence of e vents, each repres enting a speci fic point in the ala rm’ s lifecyc le. Event An e vent is a n indi cation of a distin[...]

1-4 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 1 F ault Management Ov erview Basic Conce pts and Ter ms Note The ev ent types that will b elong to each sequence can be config ured in the system re gistry . An e ven t sequenc e can consis t of a single ev ent (for examp le, “de [...]

1-5 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 1 Fault Manage ment Overv iew Basic Concep ts and Ter ms Figu re 1 -4 Flap ping Event Correlation By Root Cau se Root cause correlation is d etermin ed bet ween alarms or e vent sequen ces. I t re prese nts a causal relati onship be twee[...]

1-6 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 1 F ault Management Ov erview Severity Propag ation From an operato r’ s point of vie w , the managed entity is always a co mplete tick et. Operat io ns such as Ackno wledge, F orce-clear o r Remo ve are al ways applied to the whol[...]

1-7 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 1 Fault Manage ment Overv iew Even t Proc essin g Over view The pr opagate d se verity of the a larm (th e whole e ven t sequen ce) is al wa ys det ermined b y the last e vent in the sequence . In the abov e e xample, when the lin k-do w[...]

1-8 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 1 F ault Management Ov erview Event Proces sing Overv iew[...]

CH A P T E R 2-1 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 2 Fault Detection and Isolation This ch apter descr ibes unrea chab le network e lemen ts and t he sourc es of alar ms on d e vices . In addit ion, it describes ala rm integrity an d the integr ity service: • Unreac hable Netw ork[...]

2-2 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 2 Fault Detection and Isolation Unreachabl e Network El ements Each of these sc enario s hav e two possi ble set tings in the reg istry , name ly: • track reac hability (true/fa lse). The def ault is true. When this parameter is tr[...]

2-3 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 2 Fault Detec tion and Isolat ion So urces of Alarms On a De vice Sources of Alarms On a Device The follo wing basic sources of alarms e xist in the system which indicate a problem in the netw ork: • Service Alar ms—Alarms generated [...]

2-4 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 2 Fault Detection and Isolation Inte grity S ervice For example, this lin e in crontab runs the file e very _12_hours. cmd at 11:0 0AM and 11:00 PM: 0 11,23 * * * local/cron/every_12_hours.cmd > /dev/null 2>&1 The inte grit[...]

CH A P T E R 3-1 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 3 Cisco ANA Event Correlation and Suppression This c hapter d escribes ho w Ci sco ANA performs correl ation log ic de cisions: • Event Suppression —Descr ibes enabl ing or disabli ng port-down, port -up, link-d own and link- up[...]

3-2 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 3 Cisco ANA Ev ent Co rrelati on and Suppression Root-Cause Cor relation Proce ss Root-Cause Correlati on Process Root-cause corr elation is implemen ted in v arious stages within the Cisco AN A VNEs. Initially , the system tries to [...]

3-3 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 3 Cisco ANA Event Corre lation and Supp ression Root-Ca use Alarms Root-Cause Alarms Potential r oot-cau se alarm s ha ve a determin ed weigh t accordin g to th e specif ic ev ent customizatio n. Refer to Chap ter 6, “Event a nd Alarm [...]

3-4 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 3 Cisco ANA Ev ent Co rrelati on and Suppression Correlation Fl ows This method is usually ap plicable for problems in the networ k layer and abo ve (OSI network model) that might be caused due to a problem upstream or down stream. A[...]

CH A P T E R 4-1 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 4 Advanced Correlation Scenarios This chapter d escrib es the s pecif ic alarms wh ich use adv anced cor relat ion logi c on top of th e roo t cause anal ysis fl ow: • De vice Unreachable Alarm —De scribe s the de vice u nreach [...]

4-2 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 4 Advanced Corr elation Sc enario s Device Un reachable Alarm Device Fault Identification When a network e lemen t stops r espondin g to quer ies from the man agement syste m, one of two things has ha ppened: • Connecti vity to tha[...]

4-3 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 4 Adv anced Correlat ion Scenarios IP Interface Failure Scena rios Figur e 4-2 Device U nr eac hable Example 2 Note If the de vice has a singl e link and it is being ma naged thro ugh that link (i n-band mana gement), there is no way to [...]

4-4 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 4 Advanced Corr elation Sc enario s IP Interface Fa ilure Scena rios The alar m’ s descript ion includes the f u ll name o f the IP interf ace, fo r ex ampl e Serial0. 2 (inc luding th e identif ier for the subinterf ace if it is a[...]

4-5 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 4 Adv anced Correlat ion Scenarios IP Interface Failure Scena rios Where there is a m ultipoint setu p and on ly some circ uits unde r an IP int erface go down, and this do es not c ause t h e st ate of the IP i n terf ace to ch ange t o[...]

4-6 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 4 Advanced Corr elation Sc enario s IP Interface Fa ilure Scena rios Interface Example 1 In thi s example there i s multi point con nectivity between a PE an d numb er of CE s throug h an unm anag ed Frame Rela y network. All the CE [...]

4-7 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 4 Adv anced Correlat ion Scenarios IP Interface Failure Scena rios • An ip interfa ce status down alar m is generated on the PE. The fol lo wing cor relation in formation is pro vided: • The root cau se i s device un reacha ble: – [...]

4-8 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 4 Advanced Corr elation Sc enario s IP Interface Fa ilure Scena rios Figu re 4-6 Inte rf ace Exam ple 4 The foll o wing fa ilures are identif ied in the net work: • A link-down alarm is gene rated on Seria l0/0. • A device unreac[...]

4-9 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 4 Adv anced Correlat ion Scenarios IP Interface Failure Scena rios The fol lo wing cor relation in formation is pro vided: • device unreac hable on the CE: – The Sy slog ala rm is corre lated by flo w to the po ssibl e roo t caus e, [...]

4-10 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 4 Advanced Corr elation Sc enario s IP Interface Fa ilure Scena rios The foll o wing fa ilures are identif ied in the net work: • A link- do wn ala rm is ge nerated on the PE . • An ip interfa ce status down ala rm is generated [...]

4-11 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 4 Adv anced Correlat ion Scenarios Multi Route Correla tion Multi Rout e Correlation The correlat ion mechanism supports multi rout e scenarios, ther eby elim inating false co rrelation , and guarant eein g that th e corr ect root ca us[...]

4-12 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 4 Advanced Corr elation Sc enario s Multi Route Correla tion Figur e 4-1 1 Multi Rou te Cor relat ion Example 2 In this case the system will prov ide the follo wing report: • Root c ause—D evice Unre achable . Link Down #1, Link[...]

4-13 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 4 Adv anced Correlat ion Scenarios Generic Routing Encapsulation (GRE) Tunnel Down/Up Multi Route Correlation Example 4 In this e xample, two path s exists fr om CE1 to PE2. Sev eral links went do wn, and there is a MPLS black hole in t[...]

4-14 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 4 Advanced Corr elation Sc enario s Generic Routin g Encapsul ation (GRE) Tun nel Down/U p Note Th e GRE Tunnel Alarm Down is suppo rted only on GRE tu nnels th at are co nfigured wi th keepalive. When keep ali ve is configu red on [...]

4-15 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 4 Adv anced Correlat ion Scenarios Generic Routing Encapsulation (GRE) Tunnel Down/Up GRE Tunne l Down Correla tion Example 2 This e xample pro vides a real wor ld scenario, whereb y multiple GRE tunnels cross through a physic al link. [...]

4-16 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 4 Advanced Corr elation Sc enario s Generic Routin g Encapsul ation (GRE) Tun nel Down/U p Figure 4-16 shows the Correl ation tab of the T icket Properties dialog b ox, which displays all t he alarms that are co rrelate d to the tic[...]

4-17 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 4 Adv anced Correlat ion Scenarios BGP Process Down Alarm BGP Process Down Alarm The BGP process down alarm is issued when the B GP process is shut down on a de vice. If a BGP pro cess is shutdo wn on a de vice, the BGP neighbor dow n e[...]

4-18 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 4 Advanced Corr elation Sc enario s LDP Neighbor D own Alarm[...]

CH A P T E R 5-1 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 5 Correlation Over Unmanaged Segments This c hapter d escribes ho w Cisco ANA performs correlat ion dec isions over unmana ged segment s, namely , cl ouds. • Cloud VN E —Describes managing more than one network se gment that int[...]

5-2 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapt er 5 Correlat ion Over Unmanage d Segments Cloud VNE Fault Corre lation Across the Frame Rela y or ATM or Ethernet Clou d When a Layer 3 or L ayer 2 e vent (f or example, reacha bility problem, neigh bor change , Fram e Relay DLCI down[...]

5-3 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 5 Corre lation Over Unm anaged Segm ents Clou d Problem Alarm Cloud Problem Alarm For some e vents, when th ere is no r oot c ause found , a s pecial cloud prob lem al arm is created. Th ese e vents are then correla ted to the a larm. T [...]

5-4 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapt er 5 Correlat ion Over Unmanage d Segments Cloud Problem Ala rm[...]

CH A P T E R 6-1 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 6 Event and Alarm Con f iguration Parameters This chapte r describes the dif ferent options that e xist to modify the alarm beh avi or by editin g the appr opri ate al arm pa rameters in the syst em re gistry . • Alarm T ype Def i[...]

6-2 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 6 Event and A larm Configuration Parameters Event (Sub-Typ e) Configuratio n Parameters Event (Sub-T ype) Configura tion Parameters General Ev ent Parame ters Root Caus e Configuration Parameters These parame ters de fine the b ehavi[...]

6-3 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 6 Event and Alarm Conf iguration Par ameters Event (Sub-Type) Configuration P arameters For more inform ation a bout ro ot cause see Correl ati on B y Root Caus e, pa ge 1-5 . Correlation Config ur ation Parameters These parame ters de f[...]

6-4 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 6 Event and A larm Configuration Parameters Event (Sub-Typ e) Configuratio n Parameters Flapping Event Defi nitions Parameters If a fl apping ev ent ap plicati on is en abled on an event, the n the foll o wing par ameters contro l th[...]

CH A P T E R 7-1 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 7 Impact Analysis This chapte r describes the impact analy sis functionalit y: • Impact Analys is Options —Describes au tomatic and proacti ve impact an alysis. • Impact Report St ructure —Descri b es the stru ctur e of the [...]

7-2 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 7 Im pact Analysis Impact Report Stru cture Note Each fault which ha s been identif ied as potenti ally service af fecting triggers a genera tion of impact analysi s calculatio n ev ent if it is r eoccu rring in the networ k. This ch[...]

7-3 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 7 Impact Analysis Impac t Analysis GUI Impact Analysis GUI The Impact Analy sis GUI is av ailable in Cisco AN A NetworkV ision and displays the list of af fected service resource s which are embedded in the ticket infor mation. This sect[...]

7-4 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 7 Im pact Analysis Impact Analy sis GUI • Name —The sub interf ace (site) name or busi ness tag na me of the af fected ele ment, if it e xists. For more inf ormati on, refe r to the Cisco Active Network A bstraction M anaging MPL[...]

7-5 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 7 Impact Analysis Impac t Analysis GUI Figur e 7 -2 Detailed Report F or the Aff ected P air The follo wing fields are di splayed at the top of the Af fected Parties Desti n ation Proper ties dialog box: • Affected P air —Th e detail[...]

7-6 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 7 Im pact Analysis Disabling Im pact Analy sis Disabling I m pact Analysis Y ou can disabl e impact analys is for a specif ic alarm. This option c an be set in the Cisco AN A Regi stry . If impact an alysis is disable d the system wi[...]

7-7 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Chapter 7 Impact Analysis Accumulating Affected Parties • Link A down in cludes the acc umulation of t he report o f its o wn ev ent sequence . It also inc ludes the report of the BGP neigh bor loss. Accumulating the Affected Parties In an Ala[...]

7-8 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Chapter 7 Im pact Analysis Accumula ting Aff ected Partie s[...]

A- 1 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 APPENDIX A Supported Service Alarms This appe ndix provides the list of serv ice alar ms that are sup ported by Cisco ANA 3.6. Note If the sourc e of th e alarm i s an interface with tec hnology which is not sup ported by Ci sco ANA, then th e [...]

A- 2 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Appendix A Supported S ervice Alarms 3 All ip interf aces do wn Acti ve ip interfaces found Sent when all IP interf aces conf igured abo ve a physi cal port chan ge operat ing s tatus to dow n. true true tr ue MAJ O R 750 4 Inte rface statu[...]

A-3 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Append ix A Supported Service A larms 11 Discar d Packets The port discard p ackets value has passed the conf igured se ttings. false tru e true MI NOR 0 12 Dropped Packets The port dro pped packe ts value has passed the conf igured se ttings. f[...]

A- 4 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Appendix A Supported S ervice Alarms Shelf O ut Note The service al arms spe cifi ed in thi s guide are VNE-r elated and theref ore the lev el of support pro vided for eac h techn ology may vary . The user sh ould ref er to the V irtual Net[...]

A-5 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Append ix A Supported Service A larms Rx Dorma nt Rx Dormant An Rx Do rmant ala rm is issu ed when th e traf fic re ceiv ed ov er a physi cal po rt (measu red as a p e rce ntage of the por t’ s capacity) dro ps belo w a pred efi ned threshold [...]

A- 6 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Appendix A Supported S ervice Alarms Link O ver Utiliz ed[...]

B-1 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 APPENDIX B Event and Alarm Corre l ation Flow This chapte r describes in detail the fl ow of alarms and e vents dur ing the correlatio n process. • Softwa re Fu nction Arch itectu re —P rovides an ev ent co rrelat ion flow di agram. • Ev e[...]

B-2 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Appendi x B Event and Ala rm Corr elati on Flow Software Func tion Architect ure Software Function Architecture Figu re B-1 Event C orr el ati on Fl ow (VNE l evel) New Ev ent Event Correlation Application Read Registr y parameters Store ala[...]

B-3 Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1 OL-14284-01 Append ix B Event and Alarm Correlation F low Event Correlati on Flow Event Correlat ion Flow Event Creatio n (VNE level) An e vent (E ventCorr e lationDa ta) is created i n the VNE lev el by three dif ferent sources: • De vice Componen t (DC)[...]

B-4 Cisco Acti ve Network Abst raction Fault Management User Guide, Ver sion 3.6 Ser vice Pack 1 OL-14284-01 Appendi x B Event and Ala rm Corr elati on Flow Event Correlat ion Flow If it is box-l e vel correlation t he e ven t is stored in t he applicat ion for the cor relation d elay period and during thi s period co llects all possible root ca us[...]