Avaya 8800 Planning And Engineering, Network Design page 154

SPBM design guidelines
The following figure shows an SPBM topology of a large data center. This figure represents a full-
mesh Virtual Enterprise Network Architecture (VENA) data center fabric using SPBM for storage
over Ethernet. This topology is optimized for storage transport because traffic never travels more
than two hops.
Note:
Avaya recommends a two-tier, full-mesh topology for large data centers.
Figure 68: SPBM data center — full-mesh
Traditional data center routing of VMs
In a traditional data center configuration, the traffic flows into the network to a VM and out of the
network in almost a direct path. (The red device in the following figures represent the VM.)
The figure below shows an example of a traditional data center with Virtual Router Redundancy
Protocol (VRRP) configured. Because end stations are often configured with a static default
gateway IP address, a loss of the default gateway router causes a loss of connectivity to the remote
networks. VRRP eliminates the single point of failure that can occur when the single static default
gateway router for an end station is lost.
June 2016 Planning and Engineering — Network Design
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