Technical data

VSPEX Configuration Guidelines
VMware Horizon View 5.3 and VMware vSphere for up to 2,000 Virtual
Desktops Enabled by Brocade Network Fabrics, EMC VNX, and EMC Next-
Generation Backup
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Figure 36. Port types
Fabric ISLs and Trunks
Brocade ISLs connect VDX switches in VCS mode. All ISL ports connected
to the same neighbor VDX switch attempt to form a trunk. Trunk formation
requires that all ports between the switches are set to the same speed and
are part of the same port group. For redundancy purposes the
recommendation is to have at least two trunks between two VDXs, but the
actual number of trunks required may vary depending on customer
I/O/Bandwidth and subscription ratio requirements. The maximum number
of ports allowed per trunk group is sixteen on Brocade VDX 6740 and eight
in Brocade VDX 6720 and 6730.
In a deployment with the Brocade VDX 6740s, the 10GbE or 40GbE ports
can be used for ISLs. In this example configuration, we are using the 40
GbE ports to form two ISLs each which guarantee frame-based load
balancing across the ISLs.