EVPN Flashcards
No EVPN o problema do split horizon é resolvido usando “split horizon tag”
Falso, é o split horizon label
o EVPN usa route type 1
verdadeiro
O PBB-EVPN usa o route type 2
verdadeiro
O PBB-EVPN necessita do split horizon label
falso
Quais os tipos de rotas BGP usadas pelo EVPN-PBB
2, 3 e4
O que é uma EVI ?
é uma EVPN instance.
Similar a uma VRF, usa RT
Descreva a operação de mapeamento do tráfego interessante para EVI
Na interface física cria-se o EFP que é mapedo para um Bridge domain e este é mapeado para EVI
o que são os ES ?
Ethernet Segments, são associados as interfaces customer facing. o Ethernet Segment identifier identifica um site cliente que pode estar conectado a mais de um PE, o ESI é importante para fornecer redundância
BGP routes also signal the MPLS labels associated with MAC addresses and Ethernet segments.
true
EVPN and PBB-EVPN require the signaling and maintenance of pseudowires.
false
EVPN MPLS labels represent Multipoint-to-Point (MP2P) Label Switched Paths (LSPs)
true
EVPN Operation
● Ethernet segment reachability: The PE discovers remote ____ and their corresponding redundancy mode __________________. In case of segment failures, PEs withdraw the routes used at this stage in order to trigger fast convergence by signaling a MAC mass withdrawal on remote PEs.
ESIs, (all-active or single-active)
EVPN Operation
● Redundancy Group membership: PEs connected to the same Ethernet segment (multi-homing) automatically discover each other and elect a _____________ that is responsible for forwarding Broadcast, Unknown unicast and Multicast (BUM) traffic for a given EVI.
Designated Forwarder (DF)
● VPN membership: The PE discovers all remote PE members of a given ___. In the case of a multicast ingress replication model, this information is used to build the PE’s flood list associated with an ___ .
EVI
EVI = VRF L2
Após troca de rotas, quando um frame cliente chega ao PE ele anuncia ___ __________ _______ routes distribute reachability information no CORE
EVPN MAC advertisement
Terminology EVPN PBB
When it comes to PBB-EVPN though, there’s two types of BDs, the ___________ and the ______________. TERM 1 is where the Attachment Circuits (interfaces connected towards customers) are included as part of the BD. That means all the Customer-MAC address (C-MAC) are part of this broadcast domain. TERM 2 mainly contains the B-MAC, basically the Mac-Addresses of each Provider Edge devices (for reachability purposes) within the same MPLS network.
Edge Bridge Domain
Core Bridge Domain
_____: Service Instance Identifier, serves the purpose of identifying the service instance. It is a best practice to keep the i-SID values unique per customer service instance.
i-SID
The real reason is the flexibility of PBB-EVPN based L2 Services, the way how it reduces the BGP MAC advertisement by aggregating the ______via _____ addresses (Mapping of Customer Mac addresses to Backbone Mac addresses)
C-MAC
B-MAC
