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Which two mechanisms can be used to eliminate Cisco Express Forwarding polarization? (Choose two.)
Correct Answer: B,D
Explanation/Reference: Explanation: This document describes how Cisco Express Forwarding (CEF) polarization can cause suboptimal use of redundant paths to a destination network. CEF polarization is the effect when a hash algorithm chooses a particular path and the redundant paths remain completely unused. How to Avoid CEF Polarization 1: 12: 7-83: 1-1-14: 1-1-1-25: 1-1-1-1-16: 1-2-2-2-2-27: 1-1-1-1-1-1-18: 1-1-1-2-2-2-2-2 The number before the colon represents the number of equal-cost paths. The number after the colon represents the proportion of traffic which is forwarded per path.This means that: This illustrates that, when there is even number of ECMP links, the traffic is not load-balanced. Reference: http://www.cisco.com/c/en/us/support/docs/ip/express-forwarding-cef/116376- technote-cef- 00.html