CCNP Data Center Flashcards

What technology does Cisco FEX (Fabric Extender) implement?

Answer: Extends the parent Nexus switch's ports to a remote chassis without requiring a separate control plane

Cisco FEX extends the parent Nexus switch's port count to a remote satellite device, which appears as a line card of the parent without its own control plane.

Which Cisco Nexus feature allows two switches to present a single management IP and be managed as one logical device?

Answer: vPC+ with FabricPath

vPC+ combined with FabricPath allows two Nexus 7000 switches to appear as a single logical switch with one management plane in a FabricPath domain.

What is the maximum number of vPC member ports (vPC IDs) supported in a single vPC domain on Nexus 7000?

Answer: 256

A single vPC domain on Nexus 7000 supports up to 256 vPC IDs, each representing an individual port channel to a downstream device.

Which Nexus feature provides hitless software upgrades by separating the control and forwarding planes?

Answer: In-Service Software Upgrade (ISSU)

ISSU on Cisco Nexus allows the NX-OS software to be upgraded without dropping traffic by upgrading modules sequentially while maintaining forwarding.

What does Cisco Nexus vPC consistency checking verify?

Answer: That both vPC peers have matching port channel configuration, allowed VLANs, and spanning tree settings

vPC consistency checking ensures both peer switches have identical port channel parameters, allowed VLANs, and STP configuration to prevent traffic blackholing.

In Cisco NX-OS, what is the purpose of the 'copy running-config startup-config' equivalent command 'copy run start'?

Answer: Saves the running configuration to NVRAM so it persists after a reload

The 'copy run start' command on NX-OS saves the current running configuration to startup-config so changes persist after a switch reload.