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An engineer configured an environment that contains the vPC and non-vPC switches. However, it was noticed that the downstream non-vPC switches do not receive the upstream vPC switch peers. Which vPC feature must be implement to ensure that vPC and non-vPC switches receive same STP bridge ID from the upstream vPC switch peers?

A.

vpc local role-priority 4000

Answers
A.

vpc local role-priority 4000

B.

peer-switch

Answers
B.

peer-switch

C.

system-mac 0123.4567.89ab

Answers
C.

system-mac 0123.4567.89ab

D.

peer-gateway

Answers
D.

peer-gateway

Suggested answer: B

Explanation:

To ensure that vPC and non-vPC switches receive the same STP bridge ID from the upstream vPC switch peers, the engineer must implement the peer-switch feature on the vPC domain. The peer-switch feature allows the two vPC peer switches to act as a single logical switch for STP purposes, and to use the same bridge ID and priority. This way, the downstream switches will see the vPC peer switches as a single STP root, and will not have any STP loops or inconsistencies. The peer-switch feature also improves the convergence time and reduces the number of STP instances required in the network.Reference:=

Implementing and Operating Cisco Data Center Core Technologies (DCCOR) v1.2, Module 3: Data Center LAN Network Connectivity, Lesson 3.5: Cisco Nexus 7000 Series Switches

Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 6.x, Chapter: Configuring vPCs, Section: Configuring the Peer Switch Feature

asked 10/10/2024
Kevin Boddy
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