Which two mechanisms can be used to eliminate Cisco Express Forwarding polarization? (Choose
two.)
A.
alternating cost links
B.
the unique-ID/universal-ID algorithm
C.
Cisco Express Forwarding antipolarization
D.
different hashing inputs at each layer of the network
Answer explained:
“CEF Polarization: Avoiding CEF Polarization”
http://www.cisco.com/c/en/us/support/docs/ip/express-forwarding-cef/116376-technote-cef-00.html
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understand how CEF polarization to happen? because individual interfaces to calculate the load sharing resulting unbalance to certain interfaces!
To give uneven weight or dif hash at dif layer to avoid such symptom.
A: – Link cost should not be changed, it is weight in stead.
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