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Virtual Chassis Fabric Glossary

This glossary provides a list of common VCF terms.

  • Autoprovisioned VCF—A VCF that is configured using autoprovisioning. In autoprovisioning, you must configure the member ID and serial number of each spine device before you can plug and play your leaf devices into the VCF.

  • Homogeneous VCF—A VCF that is composed entirely of one type of switch. A homogenous VCF is considered to be a non-mixed VCF.

    Note:

    Different types of switches that can run the same software image when combined in a VCF can form what is also considered to be a non-mixed VCF that is not homegeneous. See Understanding Mixed Virtual Chassis Fabric for details.

  • Leaf device—A switch fulfilling a role in the leaf layer of a VCF. The leaf layer in a VCF is the bottom layer. See Understanding Virtual Chassis Fabric Components for details the combinations of switches that can be in a VCF and in which roles.

  • Mixed-mode VCF—A VCF that is composed of more than one type of switch that run different but compatible software images when combined in a VCF. You are required to configure a mixed-mode setting for the switches to interoperate in a VCF. See Understanding Mixed Virtual Chassis Fabric for details.

  • Network ports—Network-facing ports on any member switch in a VCF that are used to connect to devices outside of the VCF.

  • Nonprovisioned VCF—A VCF that is configured using nonprovisioning. In a nonprovisioned VCF, all roles for all switches are assigned using a primary-role election algorithm. We do not recommend using a nonprovisioned VCF configuration for most scenarios, and nonprovisioned VCF configuration should only be done by expert users.

  • Nonprovisioned member switch—A member switch that was installed into a VCF without a network administrator explicitly defining the role and member ID of the switch.

  • Non-mixed VCF—A VCF that is composed entirely of all the same type of switch, or a combination of switches that can run the same software image when combined in a VCF and do not require you to configure a mixed-mode setting for the switches to interoperate. See Understanding Mixed Virtual Chassis Fabric for details.

  • Preprovisioned VCF—A VCF that is configured using preprovisioning. In a preprovisioned VCF, you configure the member ID and serial number of every device in the VCF.

  • Provisioned member switch—A member switch in a VCF whose role and member ID were explicitly configured, or provisioned, by a network administer.

  • Spine device—A switch fulfilling a role in the spine layer in a VCF. The spine layer in a VCF is the top layer. See Understanding Virtual Chassis Fabric Components for details on the switches that can form a VCF and which can be spine devices.

  • Virtual Chassis port (VCP)—A port that is used as a fabric port to interconnect member switches in a Virtual Chassis or VCF. See Understanding Virtual Chassis Fabric Components for details on VCPs.

  • Virtual Chassis Control Protocol (VCCP)—The protocol that creates and maintains a Virtual Chassis or VCF.