User guide

Virtual Chassis Topologies Configuring Virtual Chassis
page 12-14 OmniSwitch AOS Release 7 Switch Management Guide March 2015
Virtual Chassis Topologies
This section describes the building blocks that are used to construct more flexible network topology using
virtual chassis feature. Some example topologies for virtual chassis are given below. For more informa-
tion on virtual chassis topologies, refer to the following sections.
• “Basic Virtual Chassis Building Block” on page 12-14
• “Recommended Topologies” on page 12-14
• “Interaction with Other Features” on page 12-16
Basic Virtual Chassis Building Block
The building block below can be used to connect to the edge or core devices in the network and is
comprised of two switches connected with a virtual fabric link (VFL).
Virtual Chassis Building Block
Recommended Topologies
The following topologies are recommended to support the virtual chassis functionality:
• Virtual Chassis in a Campus Core
• Virtual Chassis in a Data Center
Campus Core
In the topology shown below, all edge devices are attached to both virtual chassis peers at the core. Span-
ning Tree is not needed in this network because there are no loops. In this topology, the physical loop
around the virtual chassis ports and Virtual Fabric Link is prevented.
VFL
Master
Slave
LAG