Ring Protection Flashcards
The_________ Ethernet Ring Protection Switching feature implements protection switching mechanisms for Ethernet layer ring topologies.
ITU-T G.8032
ERP - Ethernet Ring Protection
Qual prerequisito para configuração do ERP ?
The Ethernet Flow Points (EFPs) must be configured.
Como se chama o link que protege o anel ERP ?
Ring Protection Link (RPL)
Nenhum tráfego flui através do Ring Protection Link (RPL)
verdadeiro
The following is a list of RPL types (or RPL nodes) and their functions:
_____________ —Responsible for blocking traffic over the RPL so that no loops are formed in the Ethernet traffic. There can be only one _____________ in a ring.
_____________—An Ethernet ring node adjacent to the RPL. It is responsible for blocking its end of the RPL under normal conditions. This node type is optional and prevents RPL usage when protected.
______________ is an Ethernet ring node adjacent to an RPL owner node or RPL neighbor node. It is mainly used for FDB flush optimization on the ring. This node is also optional.
RPL owner - Responsavel por bloquear o RPL
RPL neighbor node - Vizinho ao link RPL
RPL next-neighbor node - Vizinho a um dos dois anteriores
_________________ and line status messages are used to detect ring link and node failure.
Connectivity Fault Management (CFM)
Nodes on the ring use control messages called ____________
Ring Automatic Protection Switching (R-APS)
Any failure along the ring triggers a __________________ message in both directions of the nodes adjacent to the failed link, after the nodes have blocked the port facing the failed link.
On obtaining this message, the RPL owner unblocks the RPL port.
R-APS Signal Failure (R-APS SF)
A G.8032 ring can support multiple instances. An instance is a logical ring running over a physical ring.
true
tipo pvstp
O padrão _______ é conhecido como Provider Backbone Bridge
IEEE 802.1ah
