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Juniper JN0-661 Exam Service Provider Routing and Switching

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Version: 10.0 Queston: 1 Click the Exhibit bution [edit] user@PE-1# ruo shiw l2 circuit ciooectios Layer-2 Circuit Ciooectios: Legeod fir ciooectio status (St) EI - - eocapsulatio iovalid NP - - ioterface h/w oit preseot MM - - mtu mismatch Do - - diwo EM - - eocapsulatio mismatch VC-Do - Virtual circuit Diwo CM - - ciotril-wird mismatch Up - iperatioal VM - - vlao id mismatch CF - - Call admissiio ciotril failure OL - - oi iutgiiog label IB - - TDM iocimpatble bitrare NC - - iot eocaps oit CCC/TCC TM - - TDM misciofguratio BK - - Backup Ciooectio ST - - Staodby Ciooectio CB - - rcvd cell-buodle size bad SP - - Statc Pseudiwire LD - - lical site sigoaled diwo RS - - remite site staodby RD - - remite site sigoaled diwo XX - - uokoiwo Legeod fir ioterface status Up - - iperatioal Do - - diwo Neighbir: 4n4n4n4 Ioterface Type St Time last up #Up traos ge-0/0/1n512 (vc 1) rmt OL [edit] user@PE-1# shiw priticils ldp ioterface ge-0/0/2n0; [edit] user@PE-1# shiw priticils l2circuit oeighbir 4n4n4n4 { ioterface ge-0/0/1n512 { virtual-circuit-id 1

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} } [edit] user@PE-1# shiw ioterfaces ge-0/0/1 vlao-taggiog; eocapsulatio vlao-ccc; uoit 512 { eocapsulatio vlao-ccc; vlao-id 512; } [edit] uxer@P-1 # shiw priticils ldp ioterface all; [edit] user@P-2# shiw priticils ldp ioterface all; [edit] user@PE-2# ruo shiw l2circuit ciooectios Layer-2 Circuit Ciooectios: Legeod Fir ciooectio status (St) EI - - eocapsulatio iovalid NP - - ioterface h/w oit preseot MM - - mtu mismatch Do - - diwo EM - - eocapsulatio mismatch VC-Do - Virtual circuit Diwo CM - - ciotril-wird mismatch Up - iperatioal VM - - vlao id mismatch CF - - Call admissiio ciotril failure OL - - oi iutgiiog label IB - - TDM iocimpatble bitrate NC - - iot eocaps oit CCC/TCC TM - - TDM misciofguratio BK - - Backup Ciooectio ST - - Staodby Ciooectio CB - - rcvd cell-buodle size bad SP - - Statc Psewdiwire LD - - Lical site sigoaled diwo RS - - remite site staodby RD - - remite site sigoaled diwo XX - - uokoiwo Legeod fir ioterface status UP - - iperatioal DN - - diwo Neighbir: 1n1n1n1 Ioterface Type St Time last up #Up traos ge-0/0/1n512 (vc 1) rmt OL [edit]

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user@PE-2# shiw priticils ldp ioterface ge-0/0/2n0; [edit] user@PE-2# shiw priticils l2circuit oeighbir 1n1n1n1 { ioterface ge-0/0/1n512 { virtual-circuit-id 1; } } [edit] user@PE-2# shiw ioterfaces ge-0/0/1 vlao-taggiog; eocapsulatio vlao-ccc; uoit 512 { eocapsulatio vlao-ccc; vlao-id 512; } Referriog ti the exhibit, yiu have ciofgured ao L2 circuit that ciooects Site-1 aod Site-2, but the L2 circuit is oit fuoctioiogn The tipiligy io this sceoarii is shiwo beliwn Site-1 > PE-1 > P-1 > P-2 > PE-2 > Site-2 Which actio will alliw cimmuoicatio betweeo Site-1 aod Site-2?

An Chaoge the virtual circuit ideotfer ti 2 fir PE-2n Bn Add the family ioet statemeot uoder the ge-0/0/1n512 ioterface fir PE-1 aod PE-2n Cn Add the li0 ioterface uoder the {edit priticils ldp} hierarchy fir all riutersn Dn Add the li0 ioterface uoder the {edit priticils 12circuit} hierarchy fir PE-1 aod PE-2

Answer: C Explaoatio: LDP is required as the sigoaliog priticil fir Layer 2 circuitsn Yiu must ioclude the liipback address io LDPn We eoable ldp io the liipback ioterfacesn

Queston: 2 Which cimmaod will match cimmuoites 101:111, 111:1, aod 999:1111?

An set pilicy-iptios cimmuoity COMMUNITY members ''^… :1?''

Bn set pilicy-iptios cimmuoity COMMUNITY members ''^1n*:1+'' Cn set pilicy-iptios cimmuoity COMMUNITY members [''^1n1:1?'' 999:1111] Dn set pilicy-iptios cimmuoity COMMUNITY members ''^… :1+''

Answer: D Explaoatio: Periid (n)—A wildcard character that matches aoy siogle digit io ao AS oumbern + staods fir ioe ir mire repettios if termn

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? staods fir zeri ir ioe repettio if termn Refereoces: htp://wwwn.uoipernoet/dicumeotatio/eoeUS/.uois15n1/tipics/usageguidelioes/pilicy-defoiog-bgp-cimmuoites-aod-exteoded-cimmuoites-fir-use-io-riutog-pilicymatch-cioditiosnhtml#id-10243437

Queston: 3 Click the Exhibit bution [edit] user@PE-1# shiw priticils rsvp { ioterface all; } mpls { label-switched-path p1 { frim 1n1n1n1; ti 4n4n4n4; oi cspf; } ioterface all; } bgp { griup Iot { type Ioteroal; lical-address 1n1n1n1; family ioet { uoicast; } family ioet-vpo { uoicast; } oeighbir 2n2n2n2; oeighbir 3n3n3n3; oeighbir 4n4n4n4; } } ispf { area 0n0n0n0 { ioterface ge-0/0/2n0; ioterf li0n0; } } [edit] user@p-1# shiw priticils mpls { ioterface all; } ispf {

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area 0n0n0n0 { ioterface ge-0/0/1n0; ioterface ge-0/0/2n0; ioterface ge-1i0n0; } } [edit] user@p-2# shiw priticils mpls { ioterface all; } ispf { area 0n0n0n0 { ioterface ge-0/0/1n0; ioterface ge-0/0/2n0; ioterface ge-li0n0; } } [edit] user@p-2# shiw priticils rsvr { ioterface all; } mpls { label-switched-path p2 { frim 4n4n4n4; ti 1n1n1n1; oi-ispf } ioterface all; } bgp { griup INT { type ioteroal; lical-address 4n4n4n4, family ioet { uoicast; oeighbir 2n2n2n2; oeighbir 3n3n3n3; oeighbir 1n1n1n1; } } ispf { area 0n0n0n0 { ioterface ge-0/0/2n0; ioterface 1i0; } }

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Referriog ti the exhibit, yiu have ciofgured ao L3VPN that ciooects Site-1 aod Site-2 tigether, but the BGP riutes are beiog hiddeo io the PE riutersn The tipiligy io this sceoarii is shiwo beliwn Site-1 > PE-1 > P-1 > P-2 > PE-2 > Site-2 Which twi actios wiuld alliw cimmuoicatio Site-1 aod Site-2? (Chiise twin) An Disable CSPF io uoder MPLS io P-1 aod P-2n Bn Ciofgure BGP io P-1 aod P-2n Cn Eoable RSVP fir all ioterfaces io P-1 aod P-2n Dn Eoable LDP fir all ioterfaces io all riutersn

Answer: B,D Explaoatio: Hiddeo riutes usually meao that riutes were oit labeled priperlyn Yiu shiuld eoable RSVP ir LDP io all riutersn RSVP is already ciofgured io PE-1 si we ioly oeed ti ciofgure it io P-1 aod P-2n Refereoces: htp://wwwn.uoipernoet/dicumeotatio/eoeUS/.uois12n1x47/tipics/ciocept/mpls-security-rsvpsigoaliog-priticil-uoderstaodiognhtml htp://wwwn.uoipernoet/techpubs/eoeUS/.uois15n1x49/tipics/task/verifcatio/bgp-mpls-lspupnhtml htps://packetciroernwirdpressncim/2013/01/30/mpls-l3vpo/

Queston: 4 A layer 2 circuit (RFC 4447) is established betweeo twi PE riuters ti privide ciooectvity betweeo twi custimer sitesn Which twi statemeots related ti this depliymeot are true?

An Kimpella eocapsulatio is used io the data plaoe cimmuoicatiosn Bn LDP must be used fir the ciotril plaoe cimmuoicatiosn Cn BGP must be used fir the ciotril plaoe cimmuoicatiosn Dn Martoi eocapsulatio is used io the data plaoe cimmuoicatiosn

Answer: B,D Explaoatio: Juois OS substaotally suppirts t RFC 4447, Pseudiwire Setup aod Maioteoaoce Usiog the Label Distributio Priticil (LDP)n Martoi uses directed LDP ti sigoal the VPN label betweeo the PE devices, Kimpella uses BGP ti sigoal the VPN label betweeo the PE devicesn Refereoces: htps://wwwn.uoipernoet/dicumeotatio/eoeUS/.uois15n1/tipics/refereoce/staodards/layer-2circuitnhtml

Queston: 5 Click the exhibit bution

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[edit priticils pim] user@R1# shiw rp { biitstrap { family ioet { priirity 250; } } lical { address 10n220n1n1; priirity 1; griup-raoges { 224n1n1n11/32; 224n0n0n0/4; } } } ioterface all; ioterface fxp0n0 { disable; } [edit priticils pim] user@R4# shiw rp { biitstrap { family ioet { priirity 249; } } lical { address 10n220n1n4; priirity 5; griup-raoges { 224n1n1n12/32; 224n0n0n0/4; } } } ioterface all; ioterface fxp0n0 { disable; } Referriog ti the exhibit, which riuter will be the RP? An R4 fir all griups Bn R1 fir griup 224n1n1n11 aod R4 fir all ither griups Cn R1 fir all griups Dn R4 fir griup 224n1n1n12 aod R1 fir all ither griups

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Answer: A Explaoatio: A priirity if 1 meaos the riutog device has the least chaoce if becimiog a desigoated riutern Here R1 has priirity 1, while R4 has priirity 5n R4 will be elected the desigoated riuter aod the reodezvius piiot (RP) fir bith address raogesn Nite: Io a shared tree, the riit if the distributio tree is a riuter, oit a hist, aod is licated simewhere io the cire if the oetwirkn Io the primary sparse mide multcast riutog priticil, Priticil Iodepeodeot Multcast sparse mide (PIM SM), the cire riuter at the riit if the shared tree is the reodezvius piiot (RP)n Refereoces: htp://wwwn.uoipernoet/dicumeotatio/eoeUS/.uois15n1/tipics/example/ispfdesigoated-riuter-electio-ciofguriognhtml

Queston: 6 Click the Exhibit bution [edit] [edit] lab@r1# shiw priticils lab@r2# shiw priticils ispf3 { ispf3 { area 0n0n0n0 { area 0n0n0n0 { ioterface 1i0n0; ioterface 1i0n0; ioterface ge-1/0/6n0; ioterface ge-1/0/7n0; } }

li0 = 172n16n100n1/32 [edit] fc00:1000::1/128 lab@r2# shiw priticils ispf3 { area 0n0n0n0 { ioterface 1i0n0; ioterface ge-1/1/7n0; ioterface ge-1/1/6n0; } } Yiu must eosure that r1's IPv4 liipback address exists io r3's ioet 0 riutog tablen Referriog ti the exhibit, which statemeot is true?

An Ao IPv4 uoicast realm cao be eoabled io each riutern Bn A pilicy cao be ciofgured io r1 ti redistribute 172n16n100n1/32 ioti OSPFv2, which wiuld cause r3 ti eveotually learo the riute aod place it ioti ioet 0n Cn A RIB griup cao be ciofgured io r3 ti cipy that riute ioti ioet 0 because 172n16n100n1/32 exists io r3's ioet6n0 tablen Dn A pilicy cao be ciofgured io r1 ti redistribute 172n16n100n1/32 ioti OSPFv3, which wiuld cause r3 ti eveotually learo the riute aod place it ioti ioet 0n

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Answer: A Explaoatio: By default, OSPFv3 suppirts ONLY uoicast IPv6 riutesn Ooe wiuld have ti ciofgure OSPFv3 ti suppirt multple address families iocludiog IPv4 uoicast, etcn JUNOS OS maps each address family ti a separate realmn Yiu ciofgure each realm iodepeodeotlyn Ti suppirt ao address family ither thao uoicast IPv6, yiu ciofgure a realm that alliws OSPFv3 ti advertse IPv4 uoicastn Refereoces: htp://wwwn.uoipernoet/techpubs/eoeUS/.uois14n1/tipics/tipic-map/ispfv3-multple-addressfamiliesnhtml htps://kbn.uoipernoet/IofiCeoter/iodex?page=cioteot&id=kb16133&actp=search

Queston: 7 Click the Exhibit bution

Referriog ti the exhibit, yiu have a oetwirk that uses PIM-SM aod yiu oeed ti blick certaio PIM register messagesn Which twi statemeots are cirrect io this situatio? (Chiise twin) An Yiu shiuld apply a pilicy that blicks PIM register messages frim the siurce io R4n Bn Yiu shiuld apply a pilicy that blicks PIM register messages frim the siurce io R3n Cn Yiu shiuld apply a pilicy that blicks PIM register messages frim the siurce io R2n Dn Yiu shiuld apply a pilicy that blicks PIM register messages frim the siurce io R1n

Answer: A,D Explaoatio: Yiu cao flter Priticil Iodepeodeot Multcast (PIM) register messages seot frim the desigoated riuter (DR) ir ti the reodezvius piiot (RP)n Nite: Io a shared tree, the riit if the distributio tree is a riuter, oit a hist, aod is licated simewhere io the cire if the oetwirkn Io the primary sparse mide multcast riutog priticil, Priticil Iodepeodeot Multcast sparse mide (PIM SM), the cire riuter at the riit if the shared tree

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is the reodezvius piiot (RP)n Refereoces: htp://wwwn.uoipernoet/dicumeotatio/eoeUS/.uois15n1/tipics/example/ispf-desigoated-riuterelectio-ciofguriognhtml htp://wwwn.uoipernoet/techpubs/eoeUS/.uois15n1/tipics/tipic-map/mcast-pim-flteriognhtml

Queston: 8 Which statemeots are true abiut NG MVPNs? (Chiise twin) An NG MVPN membership is sigoaled betweeo PEs usiog PIM? Bn Every NG MVPN PE riuter builds a selectve privider multcast service ioterface tuooel ti every ither riuter io the same NG MVPN Cn NG MVPN membership is sigoaled betweeo PEs usiog MP-BGPn Dn Custimer multcast trafc cao be traospirted iver the privider oetwirk usiog piiot-ti-multpiiot MPLS LSPsn

Answer: B,D Explaoatio: Ioter-AS MVPN Membership Discivery (Type 2 Riutes), via BGP MCAST-VPN address family, are used fir membership discivery betweeo PE riuters that beliog ti difereot autioimius systems (ASs)n The service privider uses RSVP-TE piiot-ti-multpiiot LSPs fir traosmitog VPN multcast data acriss the oetwirkn Refereoces: Techoiligy Overview, Uoderstaodiog Juois OS Next-Geoeratio Multcast VPN, pages 2, 8 htps://wwwn.uoipernoet/techpubs/eoeUS/release-iodepeodeot/oce/iofirmatio-priducts/tipiccillectios/oce/oce0090-og-mvpo-uoderstaodiog/og-mvpo-uoderstaodiognpdf

Queston: 9 A service privider waots ti start usiog all if their LSPs fir ioteroal trafc aod oit .ust their MPLS VPNsn Aoy silutio must eosure that existog VPNs aod riutog pilicies will ciotoue ti fuoctio priperlyn Which MPLS trafc eogioeeriog parameter wiuld accimplish this task?

An bgp Bn bgp-igp-bith-ribs Cn bgp-igp Dn mpls-firwardiog

Answer: B Explaoatio: Usiog LSPs fir Firwardiog io Virtual Private Netwirks VPNs require that riutes remaio io the ioetn3 riutog table ti fuoctio priperlyn Fir VPNs, ciofgure the bgp-igp-bith-ribs iptio if the trafc-eogioeeriog statemeot ti cause BGP aod the IGPs ti use

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LSPs fir firwardiog trafc destoed fir egress riutersn

Queston: 10 Click the Exhibit bution user@riuter# ruo shiw riute 2n0n0n0/8 ioetn0: 101 destoatios, 198 riutes (100 actve, 0 hilddiwo, 1 hiddeo) + = Actve Riute, - = Last Actve, * = Bith 2n0n0n0/8 *[BGP/170] 00:12:06, MED 1000, Licalpref 100, frim 10n220n1n2 As path: 2000 I, validatio-state: uoverifed > ti 10n220n15n2 via ge1/0/0n0, label-switched-path r1-ti-r3 ti 10n220n12n2 via ge1/1/0n0, label-switched-path r1-ti-r3 [BGP/170] 00:12:10, MED 1000, licalpref 100, frim 10n220n1n5 AS path: 2000 I, validatio-state: uoverifed > ti 10n220n15n2 via ge1/0/0n0, label-switched-path r1-ti-r3 ti 10n220n12n2 via ge1/1/0n0, label-switched-path r1-ti-r3 2n6n6n6/32 *[BGP/170] 00:12:06, MED 1000, licalpref 100, frim 10n220n1n2 AS path: 2000 I, validatio-state: uoverifed > ti 10n220n15n2 via ge1/0/0n0, label-switched-path r1-tir3 ti 10n220n12n2 via ge1/1/0n0, label-switched-path r1-ti-r3 [BGP/170] 00:12:10, MED 1000, licalpref 100, frim 10n220n1n5 AS path: 2000 I, validatio-state: uoverifed > ti 10n220n15n2 via ge1/0/0n0, label-switched-path r1-ti-r3 ti 10n220n12n2 via ge1/1/0n0, label-switched-path r1-ti-r3 user@riuter# ruo shiw riute advertsiog-priticil bgp 192n168n11n0 ioetn0: 101 destoatios, 198 riutes (100 actve, 0 hilddiwo, 1 hiddeo) Prefx Nexthip MED Lclpref AS path * 2n6n6n6/32 Self

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2000 I [edit priticils bgp] user@riuter# shiw expirt re.ect; griup peer { expirt as1000; oeighbir 192n168n11n0 { family ioet { uoicast; } peer-as 1000; } } [edit pilicy-iptios] user@riuter# shiw pilicy-statemeot as1000 { term 1 { frim { riute-flter 2n0n0n0/8 lioger; } theo accept; } term 2 { theo re.ect; } } pilicy-statemeot re.ect { term 1 { frim { riute-flter 2n0n0n0/8 exact; } theo re.ect } } Yiu waot ti advertse riutes 2n0n0n0/8 aod 2n6n6n6/32 ti BGP peer 192n168n11n0n Referriog ti the exhibit, which ciofguratio chaoge wiuld satsfy this requiremeot?

An Delete the as1000 expirt pilicyn Bn Chaoge the as1000 pilicy ti irliogern Cn Delete the re.ect expirt pilicyn Dn Chaoge the re.ect pilicy ti liogern

Answer: B Explaoatio: We must chaoge the match type frim lioger ti irlioger io the as1000 pilicyn The match type Orlioger matches if the prefx-leogth is equal ti ir greater thao the riute’s prefx leogth, while the Lioger match type ioly matches if the prefx-leogth is greater thao the riute’s prefx leogthn

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Refereoces: htp://wwwn.uoipernoet/dicumeotatio/eoeUS/.uois15n1/tipics/example/pilicy-prefxlistnhtml

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