Refer to the exhibit. A network configures a vPC between a pair of Cisco Nexus 9000 Series Switches. The LACP port channel has already been configured, but the port channel fails to be established…

The correct answer is C. medium p2p. On Nexus 9K 10 Gb/s interfaces, leaving the default medium as "broadcast" (CSMA/CD) forces the link to fall back to 1 Gb/s. Setting medium p2p disables CSMA/CD and allows the port to come up at 10 Gb/s full-duplex, which is required for the LACP port-channel to form correctly.

Network

Question

Refer to the exhibit. A network configures a vPC between a pair of Cisco Nexus 9000 Series Switches. The LACP port channel has already been configured, but the port channel fails to be established. Which configuration resolves the issue?

Exhibits

Options

Aport-type fabric
Bspeed auto
Cmedium p2p
Dno switchport

How the community answered

(40 responses)

A
13% (5)
B
5% (2)
C
80% (32)
D
3% (1)

Explanation

On Nexus 9K 10 Gb/s interfaces, leaving the default medium as "broadcast" (CSMA/CD) forces the link to fall back to 1 Gb/s. Setting medium p2p disables CSMA/CD and allows the port to come up at 10 Gb/s full-duplex, which is required for the LACP port-channel to form correctly.

Topics

#vPC#LACP#port channel#ISL configuration

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