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Cisco ASR 9000
© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 1
ðorñe Vulović, Systems Engineer, CCIE #16582
ASR 9000 – na prvi pogled
� Optimizovan za L2/L3 10GE i 100GE agregaciju
� Dizajniran za 400Gbpspropusnog opsega po slotu
2© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
� Baziran na IOS XR operativnom sistemu
� Nadzor i upravljanje sa ANA sistemom
Carrier Class OS – IOS-XRModular Components Applications Architecture
IS-IS
QoS
Distributed Middleware
BGP
Multicast
Distributed Service Separation
MPLS Multicast
RIP BGPOSPF ISIS
ManageabilitySecurityHost
RoutingComposite
3© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
Designed for Scale, HA, and PerformanceFor IP NGN Applications Next Generation Architecture
OAM
VLAN
MAC
Subs
OAM
VLAN
MAC
Subs
OAM
VLAN
MAC
SubsLC1
Distributed Service Separation
LC2 LCn
ForwardingBaseAdmin
Line Card
HostComposite
ASR 9000Šasije
© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 4
Šasije
ASR 9010� 10 slotova
8 linijskih kartica2 RSP-a
� Visina 21 RU� AC i DC napajanje
5© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
� AC i DC napajanje� Protok vazduha spreda prema
pozadi
ASR 9006� 6 slotova
4 linijskih kartica2 RSP-a
� Visina 10 RU� AC i DC napajanje
6© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
� AC i DC napajanje� Protok vazduha sa strane
Elementi ASR 9010 i ASR 9006 šasijaVoñice za kablove sa poklopcem
RSP (0-1)
Protok vazduha spreda-pozadi
Ventilatori
Linijske kartice
Protok vazduha sa strane
7© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
Linijske kartice(0-3, 4-7)
Ventilatori
Šest modularnih napajanjaTri modularna
napajanja
RSP (0-1)
Linijske kartice(0-3)
Ulaz vazduha
Voñice za kablove
ASR 9010 napajanje i hlañenje� Kapacitet hlañenja po slotu od
750W � Dvostruki horizontalni
ventilatori ispod linijskih kartica� AC napajanja od 3kW
LINECARD
8© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
� DC napajanja od 2kW ili 1.5 kW
� Konfiguracije napajanja:Predviñeno 5+1 DC ili 3+3 ACTrenutno 3+1 DC ili 2+2 AC
FAN
AIR
PWR
DS
Redundansa ASR 9000 hardvera� Redundantni RSP/Fabric� Redudantna napajanja� Redundantni ventilatori� Hardverska podrška za Master/Slave RSP arbitraciju� Hardverska podrška za notifikaciju RSP switchover-a
9© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
� Hardverska podrška za notifikaciju RSP switchover-aostatku sistema� Redundantne EOBC (~upravljački Ethernet) putanje; svaka linijska kartica ima po jedan GE link prema svakom RSP-u;� OIR LK/RSP/Ventilatora nema uticaja na operaciju
fabric-a tako da nema gubitka paketa
ASR 9000RSP & Fabric
© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 10
RSP & Fabric
RSP� Vrši funkcije kontrolne ravni (control plane) i upravljanja� Dual Core CPU sa 4GB DRAM-a� 2MB NVRAM, 2GB interni bootdisk, 2 eksterna CF slota� Dva Out-of-band 10/100/1000 interfejsa za nadzor i upravljanje� Konzolni i AUX port� USB portovi za prenos fajlova� Hard disk od 40GB
11© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
� Hard disk od 40GB
Konzolni portAUX portEthernet OOB
portovi
ALARMBITSCF slotovi Statusne LED
Statusne LED
Timing Domain
Arhitektura RSP-a
CPU
4GB MEM
HDDCF card
Ether
Clock TimeFPGA
BITS
Mgt Eth
12© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
CPU Complex Fabric Interface
EOBC/Control Plane GE
CPU
I/O FPGA
Mgt EthConsole
PuntFPGA
NVRAM Boot Flash
EtherSwitch
Front Panel
Arbitration4G CFAux
AlarmCrossbarFabricASIC
ArbitrationFabricInterface
CrossbarFabricASIC
ASR 9000 fabric
� Fizički se nalazi na RSP-u ali je logički potpuno odvojen
� Sadrži centralni arbitar za upravaljanje pristupa fabric-u
� Četiri klase za diferencijaciju saobraćaja na ulasku u fabric:
13© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
fabric:Dve prioritetne klase (P1, P2)Dve best effort klase (BE)
� Sprečava HOLB (Head Of Line Blocking) pomoću VOQ mehanizma
� Razdvojeni redovi za unicast i multicast saobraćaj
ASR 9000 fabric ASIC-i (1)� Fabric se sastoji od dva Crossbar Fabric ASIC-a; � 40Gbps linijska kartica i RSP ima jedan ASIC za
interfejs sa fabric-om (Fabric Interface ASIC);80 Gbps linijska kartica će imati dva takva ASIC-a
� Svaki Fabric Interface ASIC ima po jedan 23 Gbps kanal prema svakom Crossbar Fabric ASIC-u
14© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
kanal prema svakom Crossbar Fabric ASIC-u
ASR 9000 fabric ASIC-i (2)
CrossbarFabricASIC
CrossbarFabricASIC
ArbitrationFabric Interface Fabric Interface
and VOQRSP0
23 Gbps po fabric kanalu8x23Gbps =184Gbps sa 2xRSP4x23Gbps=92Gbps sa 1xRSP
15© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
RSP1
Single-Fabric 40G Linecard
Arbitration
CrossbarFabricASIC
CrossbarFabricASIC
Fabric Interfaceand VOQ and VOQ
Fabric Interfaceand VOQ
Dual-Fabric 80G Linecard
RSP0
4x23Gbps =92Gbps sa 2xRSP, 2x23Gbps=46Gbps sa 1xRSP
Fabric Load SharingCrossbarFabricASIC
CrossbarFabricASIC
ArbitrationFabric Interface
and VOQFabric Interface
and VOQRSP0 4 3 2 1
16© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
RSP1
Arbitration
CrossbarFabricASIC
CrossbarFabricASIC
� Unicast saobraćaj se šalje kroz prvi dostupan link prema fabric-u� Svaki ASIC za interfejs prema fabric-u sadrži logiku za re-sekvenciranje frejmova; kašnjenje u
resekvenciranju se meri u nanosekundama
Super-frejming mehanizam� Više unicast frejmova (do 32) prema istom odredištu
se može agregirati u jedan super frejm� Značajno poboljšava ukupan protok prema fabric-u
Packet 1
17© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
MaksimalniSuper frejm
Packet 1
Packet 1Packet 2Packet 3
MinimalniSuper frejm
Packet 1Packet 2
Arbitracija u fabric-u� Pristup fabric-u se kontroliše pomoću centralnog arbitracionog ASIC-a
� U jednom trenutku samo jedan arbitracioni ASIC vrši arbitraciju� Algoritam arbitracije prepoznaje QoS i obezbeñuje da da P1 klasa ima prioritet prema P2 klasi pre čemu obe te klase imaju prioritet prema neprioritetnim klasama
18© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
� Arbitracija obezbeñuje jednak pristup propusnom opsegu svim linijskim karticama
� Arbitracija se vrši relativno prema izlaznom (egress) NPU na izlaznoj linijskoj kartici
Virtualni Izlazni Redovi (Virtual Output Queues – VOQs)
� Kapacitet fabric kanala prema izlaznom modulu se reprezentuje sa Virtualnim Izlaznim Redovima (Virtual Output Queues – VOQs) na ulazu u fabric sa ulaznog modula
� Izlazni modul sadrži po jedan VOQ za svaku od četiri klase saobraćaja svakog NPU-a na izlaznom modulu:
19© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
klase saobraćaja svakog NPU-a na izlaznom modulu:Jedan NPU obuhvata:Jedan fizički10G port (neblokirajuća linijska kartica)Dva fizička10G porta (blokirajuća linijska kartica)Deset 10/100/1000 portova
� Za svaki primljeni paket, arbitar odreñuje da li za njega ima mesta u odgovarajućem VOQ ili ne
VOQ-evi i izlazni fabric redovi
DRRDRR
DRR
Port 0
Port 1
Port 2
Egress SchedulerCrossbarFabricASIC
CrossbarFabricASIC
Arbitration
RSP0
DRRDRR
DRR
Slot 0/Port 0
Slot 0/Port 1
.
.
Ingress Scheduler
20© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
136 ulaznih VoQ-ova:8 odredišnih LK * 4 10G portova/LK * 4 klasa/port** == 128 VoQ-ova2 odredišna RSP-a * 1 10G port/RSP * 4 klasa/port == 8 VoQ zaRSP-eve4 reda za multicast
EgressFabric Interface ASIC
DRRDRR
DRRPort 2
Port 3
Multicast
Egress Scheduler
20 izlaznih redova:4 klasa/port * 4 porta/LK (unicast) == 164 multicast klasa == 4
RSP1
Arbitration
CrossbarFabricASIC
CrossbarFabricASIC
IngressFabric Interface ASIC
DRRDRR
DRR
Slot 9/Port 2
Slot 9/Port 3
Multicast
Ingress Scheduler
ASR 9000Linijske kartice
© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 21
Linijske kartice
ASR 9000 linijske kartice (1)� Trenutno dostupne linijske kartice:
4x10GE40x1GE8x 10GE (2:1 oversubscription)
� IP, Ethernet, MPLS A9K-8T/4-E
22© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
� IP, Ethernet, MPLS L2VPN/L3VPN servisi� 1M IPv4 ruta� 1M MAC adresa� 32000 L2/L3 interfejsa� 384k redova
A9K-40GE-B
A9K-4T-B
ASR 9000 linijske kartice (2)� Memorijske varijante:
BaseExtended (isti broj ruta, 2x više interfejsa, 3x više redova)
A9K-8T/4-E
23© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
A9K-40GE-B
A9K-4T-B
A9K-8T/4-E Extended memory option8 port Ten Gig
40Gig line rate network processor
Komponente ASR 9000 linijskih kartica� ASIC za interfejs prema fabric-u
Sadrži jedan bidirekcioni 23 Gbps kanal prema svakom Crossbar Fabric ASIC-uSa dva RSP-a u sistemu, svaka linijska kartica ima 4x23 Gbps=92 Gbps propusnog opsega kroz fabricSadrži tabelu za replikaciju multicast saobraćaja i vrši replikaciju prema Bridge FPGA
� Bridge FPGAPovezuje NPU i ASIC za interfejs prema fabric-u; vrši konverziju izmeñu NPU zaglavlja i fabric zaglavljaSadrži hardverske redove za sistemski QoS
24© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
Sadrži hardverske redove za sistemski QoSSadrži tabelu za replikaciju multicast saobraćaja i vrši replikaciju prema NPU-ovima
� Trident NPU (Network process unit)Glavni procesor paketa, vrši L2 i L3 lookup kao i replikaciju multicast saobraćaja
� CPUIstovetan CPU kao na RSP-uOdreñeni protokoli kao BFD, CFM, ARP se distribuiraju na CPU-ove linijskih karticaLokalni proces dobija FIB tabelu sa RP-a i programira hardverske tabele na NPU, Bridge FPGA-u i Fabric interface ASIC-u
Arhitektura A9K-4T-B linijske kartice
10GE PHYNPU 0
Bridge
CPU
2GB memory2GB flash
XFP 3
Example: A9K-4T-B
CrossbarFabricASIC
CrossbarFabricASIC
25© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
via backplane
10GE PHY
10GE PHY
10GE PHY
NPU 1
NPU 2
NPU 3
Bridge FPGA 0
Bridge FPGA 1
GigE EOBC
Network Clocking
XFP 2
XFP 1
XFP 0
RSP1
Arbitration
CrossbarFabricASIC
CrossbarFabricASIC
Arbitration
RSP0
FabricInterface
Arhitektura A9K-8T/4-B linijske kartice
10GE PHY
10GE PHYNPU 0
Bridge
CPU
2GB memory2GB flash
XFP 3
XFP 7
Example: A9K-8T/4-B ~1.5:1 over-subscribed
CrossbarFabricASIC
CrossbarFabricASIC
4x15Gbps
30Gbps
30Gbps,29Mpps uni-directional per NPU
26© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
via backplane
10GE PHY
10GE PHY
10GE PHY
10GE PHY
10GE PHY
10GE PHY
NPU 1
NPU 2
NPU 3
Bridge FPGA 0
Bridge FPGA 1
GigE EOBC
Network Clocking
XFP 2
XFP 6
XFP 1
XFP 5
XFP 0
XFP 4
RSP1
Arbitration
CrossbarFabricASIC
CrossbarFabricASIC
Arbitration
RSP0
FabricInterface
4x23Gbps fabric bandwidth
2x30Gbps
30Gbps
60Gbps
Trident Network Process Unit (NPU)
� 10 Gbps bidirekcioni protok sa uključenim servisima-
TRIDENT NPU-
STATS QDR MEMORY
FRAME MEMORY
LOOKUP MEMORY
TCAME
FIB MAC
27© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
� 10 Gbps bidirekcioni protok sa uključenim servisima� Četiri pridružene memorije:
TCAM memorija se koristi za VLAN tag, QoS i ACL klasifikacijuLookup memorija čuva FIB tabelu, tabelu MAC adresa i CEF susedstvaStats QDR memorija čuva statistike interfejsa itd.Frame memorija je bafer za sve redove
� Base i Extended memorijske opcije imaju istu veličinu Lookupmemorije (tj. maksimalni broj ruta) ali različite veličine ostalih memorija
ASR 9000Arhitektura prosleñivanja
© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 28
prosleñivanja saobraćaja
Prosleñivanje paketa na ASR 9000� Prosleñivanje paketa je u potpunosti
distribuirano na linijske kartice� Two-stage prosleñivanje:
Prvi (ulazni) lookup se radi na ulaznoj linijskoj kartici i daje izlazni Switch Fabric Port (SFP)
29© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
izlazni Switch Fabric Port (SFP)Drugi (izlazni) lookup se radi na izlaznoj linijskoj kartici i daje izlazni fizički port
� ARP/CEF Adjacency informacija je lokalna na kartici
Put paketa – ulazna linijska kartica
NPU 0
CrossbarFabricASIC
CrossbarFabric
13
2
Prvi lookup na ulaznom NPU-u; vraća odredišni NPU (Switch Fabric Port – SFP)
30© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
NPU 1
NPU 2
NPU 3
Bridge FPGA 0
Bridge FPGA 1
RSP1
Arbitration
ASIC
CrossbarFabricASIC
CrossbarFabricASIC
Arbitration
RSP0
FabricInterface
4 5
Put paketa – izlazna linijska kartica
NPU 0
CrossbarFabricASIC
CrossbarFabric
Drugi lookup se vrši na izlaznom NPU; vraća odredišni port kao i informacije za packet rewrite
4
35
31© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
NPU 1
NPU 2
NPU 3
Bridge FPGA 0
Bridge FPGA 1
RSP1
Arbitration
ASIC
CrossbarFabricASIC
CrossbarFabricASIC
Arbitration
RSP0
FabricInterface
12
ASR 9000Prosleñivanje L3 paketa
© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 32
paketa
Pregled L3 kontrolne ravni
LDP RSVP-TEBGP
ISIS
OSPF
EIGRPStatic
LSD RIB RP
33© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
FIB Adjacency
LC NPU
ARP
AIBSW FIB
LC CPUAIB: Adjacency Information BaseRIB: Routing Information BaseFIB: Forwarding Information BaseLSD: Label Switch Database
rx-adj
from wireIngress NPU
Prosleñivanje L3 paketa
TCAM rxIDB L3FIB rx-TE-adj rx LAG
Packet classification
source interface information
L3 FIB lookup
Next-hopECMP load balancing
LAG hashingTE next-
hop
Packet rewriteAdding NP header
rewriteSFPswitch fabric port (egress NPU)
SFP: switch fabric port = egress NPU, tell the system where to forward the packet
34© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
Egress NPU
L3FIBtx-adjTE-NH-adjtx-adj
rewrite
txIDB
NP TypeL3_UNICASTMPLS_LER
MPLS_LER_DISP…
L3 FIB lookupTE-NH-
adjtx-adjtx LAG Next-hop
ECMP load balancing (from
ingress hashing result)Backup TE
Primary TEdestination interface info
to wire
Fabric
LAG hashing
NP type: tell egress NPU the type of lookup it should execute, such as L3 unicast lookup, MPLS label switch, MPLS label disposition, etc
ASR 9000Prosleñivanje L2 paketa
© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 35
paketa
Prosleñivanje L2 paketa� L2 servisi:
Point-to-point; prenos frejmova izmeñu dva logička porta bez učenja MAC adresaMulti-point; bridžovanje izmeñu dva logička porta bazirano na naučenim MAC adresama; logički port je lokalni L2 interfejs ili VPLS/EoMPLS PW
� L2 strukture:
36© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
� L2 strukture:XID – logički interfejs; loklani XID je lokalni L2 (pod)interfejs ; globalni XID je PW ili link bundleL2VPN LDI (loadinfo); ako je logički port PW onda mu se pridružuje L2VPN LDI za impoziciju MPLS labele i prosleñivanjeTabela bridž domena; sadrži listu logičkih interfejsa na NPU-u i pointer na tabelu MAC adresaTabela MAC adresa
TCAM rxIDB
Packet classification
source interface information
L2VPN next-hop
SFP+XID
L2VPN LDI SFPNormal L3 MPLS
forwarding, EoMPLS label imposition
AC
XID txIDB
AC
To-AC
To-PW
Prosleñivanje L2 paketa u point-to-point servisima
37© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
L3 FIB
L3 FIB lookup
L2VPN next-hop
SFP+XID
L2VPN LDI SFP
Normal L3 MPLS forwarding, VC and IGP label swap
PWL3 FIB
Normal L3 MPLS label switching
PWTo-AC
To-PW
Fabric
Label deposition
TCAM rxIDB
Packet classification
source interface information
L2VPN next-hop
SFP+XID
L2VPN LDI SFPNormal L3 MPLS
forwarding, EoMPLS label imposition
AC
XID txIDB
AC
To-AC
To-PWMAC+BD
MAC and BD
lookup
Prosleñivanje L2 paketa u multi-point servisima
38© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
L3 FIB
L3 FIB lookupEoMPLS label deposition
L2VPN next-hop
SFP+XID
L2VPN LDI SFP
Normal L3 MPLS forwarding, EoMPLS label imposition
PWL3 FIB
Normal L3 MPLS label switching
PWTo-AC
To-PWMAC+BD
MAC and BD
lookup
Fabric
TCAM rxIDB
Packet classification
source interface information
AC
XID txIDB
ACMAC + BDMAC and Bridge-Domain lookup
FGID+MGID
BD
Bridge-Domain lookup
Flooding L2 paketa u multi-point servisima
39© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
L3 FIBPW
L2VPN LDIEoMPLS label
imposition and MPLS forwarding
PW
MAC + BDMAC and
Bridge-Domain lookup
flooding replication
Replicate per bridge port (AC or PW)L3 FIB lookup
EoMPLS label deposition
Fabric
FIGD – Fabric Group IDMGID – Multicast Group IDUsed for efficient multicast/flooding packet replication, refer to “multicast architecture”
ASR 9000Prosleñivanje multicast paketa
© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 40
multicast paketa
ASR 9000 multicast arhitektura� Kontrolna ravan
Svi multicast protkoli se izvršavaju na RP-uCPU na linijskoj kartici obrañuje posebne multicast pakete (softverskoprosleñivane)
� Ravan prosleñivanja podatakaMulticast prosleñivanje je u potpunosti distribuirano na linijske karticeTwo stage prosleñivanje
41© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
� Hardverska replikacija paketaReplikacija multicast paketa se vrši unutar fabric-a odnosno izlazne linijske kartice; ulazna linijska kartica nikad ne vrši replikacijuMulticast paketi se repliciraju isključivo u hardveru; multicast je line rate i u slučaju potpuno popunjene šasije
� L2 vs. L3 multicastL2 i L3 multicast imaju razdvojene kontrolne ravni ali zajedničku ravan podataka
Pregled L3 multicast kontrolne ravni� PIM i IGMP paketi se šalju direktno na RSP CPU� RSP CPU ažuira MRIB tabelu� MRIB tabela se distribuira na LK gde se zapisuje u
MFIB tabelu; na osnovu MRIB tabele se kreira FPOE tabela na fabric-u koja definiše replikaciju kroz fabric
� CPU na linijskoj kartici programira MGID (Multicast
42© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
� CPU na linijskoj kartici programira MGID (Multicast Group ID) tabele na Fabric ASIC-u, FPGA-ovima i NPU-ovima koja definiše replikaciju na tim elementima
LC2T0
B0FabricInterface
T1
Replikacija u Fabricu �repliciranje paketa na izlaznu LK prema FGID & FPOE tabelama
Replikacija u Frabric interface ASIC-u� repliciranje paketa na Bridge FPGA prema MGID tabeli
Replikacija u Bridge FPGA� repliciranje paketa na NPU prema MGID tabeli
Replikacija u NPU� repliciranje paketa na izlazne portove
1 2 3
4
LC1T0
Replikacija multicast paketa
43© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
FabricInterface
B1 T2
T3
IGMP joinsMulticast Source
portove
Switch Fabric
1 23
4
T0B0
FabricInterface
B1
T1
T2
T3 LC3T0
B0FabricInterface
B1
T1
T2
T3
FGID MGIDMGID
FIGD – Fabric Group IDMGID – Multicast Group IDFPOE – Fabric Point of Exit
IGMP joins 2MGID3
MGID
4
4
IGMP joins
Miercom ASR9000 Test Report
44© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
http://www.miercom.com/dl.html?fid=20090827&type=report
Cisco Networkers 25-28. januar 2010.BarselonaRegistrujte se
45© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
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