350-601 · Question #372
A customer data center experiences bandwidth contention that affects the servers connected to the NPV enabled switch. The NPV switch is connected to the NPIV switch using two 10 Gb uplinks but the…
The correct answer is D. switch2(config)# port-channel load-balance ethernet source-dest-port. To increase bandwidth for an NPV enabled switch by adding a third uplink and addressing contention, the most effective approach is to configure port-channel load balancing to optimize traffic distribution.
Question
A customer data center experiences bandwidth contention that affects the servers connected to the NPV enabled switch. The NPV switch is connected to the NPIV switch using two 10 Gb uplinks but the traffic originating front the connected hosts to the core switch exceeds the available bandwidth. The engineers decided to add a third uplink to the NPV server to increase the available bandwidth. Which set of commands must be used to provision the new uplink?
Options
- Aswitch2(config)# npv auto-load-balance
- Bswitch2(config)# npv traffic-map server-interface
- Cswitch2(config)# npv auto-load-balance disruptive
- Dswitch2(config)# port-channel load-balance ethernet source-dest-port
How the community answered
(55 responses)- A4% (2)
- B15% (8)
- C7% (4)
- D75% (41)
Why each option
To increase bandwidth for an NPV enabled switch by adding a third uplink and addressing contention, the most effective approach is to configure port-channel load balancing to optimize traffic distribution.
npv auto-load-balance is used to automatically load balance server interfaces to NPV uplinks, but it does not directly provision a new uplink or configure its load balancing strategy.
npv traffic-map server-interface is used to map server interfaces to specific NPV uplinks, which is more about traffic segregation than general bandwidth increase across aggregated links.
npv auto-load-balance disruptive is similar to option A but implies a disruptive re-balancing, neither of which provisions a new uplink or directly configures its load balancing strategy.
The command port-channel load-balance ethernet source-dest-port configures the load balancing method for port channels, ensuring that traffic is distributed effectively across multiple physical uplinks, thereby maximizing the utilization of the increased aggregated bandwidth from the new uplink.
Concept tested: Cisco NPV, port-channel load balancing, bandwidth expansion
Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/interfaces/configuration/guide/b_Cisco_Nexus_9000_Series_NX-OS_Interfaces_Configuration_Guide_7x/b_Cisco_Nexus_9000_Series_NX-OS_Interfaces_Configuration_Guide_7x_chapter_0100.html#concept_ACBF2E555C0D49C08D18C28D05221975
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