Design Reference

Figure 47: SPBM ring topology with shared data centers
Reference architectures
SPBM has a straightforward architecture that simply forwards encapsulated C-MACs across the
backbone. Because the B-MAC header stays the same across the network, there is no need to
swap a label or perform a route lookup at each node. This architecture allows the frame to follow the
most efficient forwarding path from end to end.
The following reference architectures illustrate SPBM with multiple VSP and ERS systems in a
network. For information about solution-specific architectures like Video Surveillance or Data Center
implementation using the VSP 4000, see
Solution specific reference architectures on page 115.
The following figure shows the MAC-in-MAC SPBM domain with BEBs on the boundary and BCBs
in the core.
SPBM design guidelines
102 Network Design Reference for Avaya VSP 4000 Series June 2015
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