Refer to the exhibit These switches form an SPBM region. What is required for load
balancing to occur across the links between these switches?
A.
IS-IS cost for each backbone link must be the same (with IS-IS ECMP enabled).
B.
B-VLANs must be configured to use different ECT algorithms.
C.
Tandem multicast mode must be enabled globally
D.
B-VLANs must be assigned to different MSTP instances.
Explanation:
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correct is B
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CORRECT IS B
EPLANATION:
To move traffic from an overloaded path to a path that has less traffic, you can change B-VLAN to ECT
algorithm mappings by using the ect command or by performing ECT migration. ECT migration provides more granular traffic control than the ect command.
Using the ect command, you can move all traffic of a B-VLAN from one path to another. The B-VLAN’s
traffic is disrupted before you complete B-VLAN to ECT algorithm remapping across the SPBM network.
Using ECT migration, you can move traffic by I-SID without traffic loss.
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B
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