350-401 Question 119
Single answerAn organization has deployed a multi-layer switching infrastructure using Cisco Catalyst switches. The network administrator notices that users are experiencing intermittent connectivity issues when accessing resources in different VLANs. Upon investigation, the administrator finds that the intermittent connectivity is due to suboptimal routing and excessive traffic on certain uplinks. Which feature or technology should the administrator implement to address this issue?
- A
Spanning Tree Protocol (STP)
- B
Equal-Cost Multi-Path (ECMP)
- C
Hot Standby Router Protocol (HSRP)
- D
Cisco Express Forwarding (CEF)
Show answer and explanation
Correct answer: B
Explanation
The issue of suboptimal routing and excessive traffic on uplinks can be resolved by implementing Equal-Cost Multi-Path (ECMP). ECMP enables the network to distribute traffic across multiple uplinks with equal cost, improving performance and preventing overloading of specific links. Other options like STP, HSRP, and CEF either address different problems or do not directly address the issue described in the scenario.
- A. Incorrect.
Spanning Tree Protocol (STP) is used to prevent Layer 2 loops in a network but does not address suboptimal routing or traffic distribution across uplinks.
- B. Correct.
Equal-Cost Multi-Path (ECMP) allows traffic to be distributed across multiple paths of equal cost, resolving suboptimal routing and balancing traffic across uplinks, making it the correct solution.
- C. Incorrect.
Hot Standby Router Protocol (HSRP) provides gateway redundancy but does not address suboptimal routing or balance traffic across multiple uplinks.
- D. Incorrect.
Cisco Express Forwarding (CEF) is used for efficient packet forwarding but does not inherently resolve issues related to suboptimal routing or traffic distribution.