Design Reference

Figure 35: 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 do 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 on solution-specific architectures like for Video Surveillance or Data
Center implementation using the VSP 4000, see
Solution specific reference architectures on
page 96.
The following figure shows the MAC-in-MAC SPBM domain with BEBs on the boundary and
BCBs in the core.
Reference architectures
Network Design Reference for Avaya VSP 4000 February 2014 83