Avaya 8800 Planning And Engineering, Network Design page 151

SPBM reference architectures
Figure 65: SPBM campus without SMLT
Where the above figure shows the physical topology, the following two figures illustrate a "logical"
rendition of the same topology. In both of the following figures, you can see that the core is almost
identical. Why? Because the SPBM core just serves as a transport mechanism that transmits traffic
to the destination BEB. All the provisioning is done at the edge.
In the data center, VLANs are attached to Inter-VSNs that transmit the traffic across the SPBM core
between the data center on the left and the data center on the right. A common application of this
service is VMotion moving VMs from one data center to another.
The first figure below uses IP Shortcuts that route VLANs in the GRT. There is no I-SID
configuration and no Layer 3 virtualization between the Edge Distribution and the Core. This is
normal IP forwarding to the BEB.
June 2016 Planning and Engineering — Network Design 151
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