Refer to the exhibit. An engineer must distribute all the host ports to use all eight configured FEX uplinks. The solution must minimize disruption if an uplink fails. Which action accomplishes this objective?
A.
Set the pinning max-links value to 8
B.
Configure the eight uplinks in a port channel
C.
Change the supported FEX type
D.
Statically assign each host interface to a fabric uplink
Suggested Answer:B🗳️
A fabric interface that fails in the port channel does not trigger a change to the host interfaces. Traffic is automatically redistributed across the remaining links in the port channel fabric interface. If all links in the fabric port channel go down, all host interfaces on the FEX are set to the down state. Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus2000/sw/configuration/guide/ b_Cisco_Nexus_2000_Series_Fabric_Extender_Software_Configuration_Guide_Release_4_2/ b_Cisco_Nexus_2000_Series_Fabric_Extender_Software_Configuration_Guide_Release_4_2_chapter_011.html
A fabric interface that fails in the port channel does not trigger a change to the host interfaces. Traffic is automatically redistributed across the remaining links in the port channel fabric interface. If all links in the fabric port channel go down, all host interfaces on the FEX are set to the down state.
I think it should be D, Traffic disruption should be minimized when an uplink fails. If pinning was used and an uplink failed, then traffic associated with the failed link would be disrupted until it could be re-routed. Using a port-channel is much less disruptive.
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