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300-610 · Question #276

Refer to the exhibit. A Cisco engineer is configuring Cisco Nexus 7000 Series Switches. To simplify initial configuration verification and vPC+/HSRP troubleshooting, the engineer configures the primar

The correct answer is A. Configure a VLAN network interface for the same VLAN from both devices.. To enable Layer 3 connectivity from each vPC+ peer device in a Cisco Nexus environment with HSRP, a VLAN network interface for the same VLAN must be configured on both devices.

Data Center Network Design

Question

Refer to the exhibit. A Cisco engineer is configuring Cisco Nexus 7000 Series Switches. To simplify initial configuration verification and vPC+/HSRP troubleshooting, the engineer configures the primary vPC+ peer device with the FHRP active router highest priority. The primary FHRP device responds to ARP requests, even though the secondary vPC+ device also forwards the data traffic. Which configuration enables the Layer 3 connectivity from each vPC+ peer device?

Exhibit

300-610 question #276 exhibit

Options

  • AConfigure a VLAN network interface for the same VLAN from both devices.
  • BEnsure that the enhanced Layer 2 license has been installed.
  • CSet a restore timer that delays the vPC+ restart.
  • DManually configure virtual MAC addresses for any FHRP protocol.

How the community answered

(42 responses)
  • A
    74% (31)
  • B
    17% (7)
  • C
    2% (1)
  • D
    7% (3)

Why each option

To enable Layer 3 connectivity from each vPC+ peer device in a Cisco Nexus environment with HSRP, a VLAN network interface for the same VLAN must be configured on both devices.

AConfigure a VLAN network interface for the same VLAN from both devices.Correct

In a vPC+ and HSRP setup, each vPC+ peer device must have a VLAN network interface (SVI) configured for the shared VLAN, even if only one is the active HSRP router. This ensures that both devices possess the necessary Layer 3 interface to process and forward traffic for that VLAN, allowing Layer 3 connectivity from each peer device as required for routing.

BEnsure that the enhanced Layer 2 license has been installed.

Ensuring the enhanced Layer 2 license is installed is a prerequisite for certain features but not the specific configuration step that enables Layer 3 connectivity from both vPC+ peers for a given VLAN.

CSet a restore timer that delays the vPC+ restart.

Setting a restore timer is related to vPC+ operational stability after a restart or failure, not to the fundamental enablement of Layer 3 connectivity from each peer device.

DManually configure virtual MAC addresses for any FHRP protocol.

Manually configuring virtual MAC addresses for FHRP protocols provides consistency but does not, in itself, enable Layer 3 routing functionality from each vPC+ peer device; the SVIs are essential for that.

Concept tested: Cisco Nexus vPC+ and HSRP Layer 3 configuration

Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/layer2_features/51_3_n1_1/Cisco_n5k_layer2_config_gd_513_n1_1_chapter23.html

Topics

#vPC#HSRP#Cisco Nexus#Layer 3 forwarding

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