MetroEthernet e Serviços

Quais são os principais serviços Metro Ethernet?

Os serviços de Metro Ethernet podem se classificar em 2 tipos quanto à topologia:

  • Serviços ponto a ponto (P2P) – Formam um enlace ethernet ponto a ponto. Este serviços também é chamado pelo MetroEthernet fórum de E-Line.
  • Serviços Multiponto – Conectam em Ethernet diversos pontos como se fosse um switch. Este serviço é chamado pelo Metro ethernet Fórum de E-LAN.
  • Serviços ponto-multiponto – Formam enlaces ethernet ponto multiponto. As pontas do multiponto falam somente com a raiz do EVC ponto-multiponto. É uma espécie de topologia em hub-spoke. Chamado pelo Metro Ethernet Forum de E-TREE.

Os serviços de MetroEthernet também podem se classificar em 2 tipos quanto ao tipo de comutação:

  • Baseado nas portas – transparente às VLANs, conecta as portas do cliente como se fossem trunkings (este serviço encapsula tudo que vem das portas).
  • Baseado em VLAN – Comuta as VLANs como se fossem circuitos virtuais distintos. Somente as VLANs contratadas passam.

A combinação destas possibilidades dá os 6 tipos de serviço: EPL, EVPL, E-LAN, EV-LAN, E-TREE, EV-TREE.

Até logo!

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