Routed Bridge Encapsulation (RBE) Baseline Architecture
The previous section explains the RFC 1483 bridging architecture and discusses the advantages and disadvantages of this model. RBE was developed to address the known RFC 1483 bridging issues, including broadcast storms, scalability, and security. RBE features function identically to half-bridging, except it operates exclusively over ATM. Half-bridging works by allowing certain IP address to go over a certain VC; therefore, use Layer 3 addresses instead of ARP to forward to different VCs. By eliminating Layer 2 connectivity between subscribers, RBE can scale well, provide greater performance, and provide better security that RFC 1483 bridging (using IRB) failed to provide.
The RBE baseline ...
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