AOS-CX VSF and VSX Flashcards

In a VSF stack, which member role is responsible for running the control plane and making forwarding decisions for the entire stack?

Answer: Conductor

The Conductor is the primary control-plane switch in a VSF stack, managing all forwarding and configuration for the virtual fabric.

What is the maximum number of switches that can be combined in a single AOS-CX VSF stack?

Answer: 8

AOS-CX VSF supports up to 8 members in a single virtual switching fabric.

Which VSF topology provides the highest level of resiliency against a single link failure?

Answer: Ring

A ring topology connects the last VSF member back to the conductor, so any single link failure leaves all members connected via the remaining path.

When a VSF stack splits due to a link failure, which mechanism prevents both partitions from simultaneously acting as the active conductor?

Answer: Multi-Active Detection (MAD)

MAD (Multi-Active Detection) uses a dedicated link or OOBM network to detect split-stack conditions and shut down the secondary partition.

In AOS-CX VSF, what automatically happens to VSF member port numbering when a new switch joins as member 3?

Answer: Ports are renumbered starting from 3/1/1

VSF member ports are prefixed with the member number, so member 3's first port becomes 3/1/1, giving each member a unique port namespace.

After a VSF conductor failover, which switch takes over the conductor role?

Answer: The designated Standby member

The pre-elected Standby member immediately assumes the Conductor role upon detecting conductor failure, minimizing reconvergence time.

Which command displays the current VSF topology, member roles, and software version for each member in AOS-CX?

Answer: show vsf detail

The 'show vsf detail' command provides a comprehensive view of all VSF members, their roles, status, and running software.