Question 170
At a design studio in Berlin, engineers report that an engineer configures static aggregation on one side and LACP active on the other. The work affects wireless workstations and video conferences. Which post-change observation is the strongest acceptance evidence?
Explanation
Correct Answer
This observation tests the Multi-chassis LAGs and active paths requirement at a design studio in Berlin. The expected result is that the dual-homed access device negotiates its expected LAG and forwards without a layer-two loop after a controlled member failure. The necessary correction is to configure and verify a supported distributed LAG with compatible LACP settings, member interfaces and corresponding peer relationships; a saved configuration alone would not prove it is working. In this case, the observed fault is that an engineer configures static aggregation on one side and LACP active on the other.
Incorrect Answers
At a design studio in Berlin, this would verify VSX inter-switch link and keepalive, not the failure reported in this scenario. The requested closure criterion instead concerns Multi-chassis LAGs and active paths: the dual-homed access device negotiates its expected LAG and forwards without a layer-two loop after a controlled member failure.
At a design studio in Berlin, the observation may be useful for a separate VSF member roles and stack consistency test, but it does not establish that an engineer configures static aggregation on one side and LACP active on the other has been resolved. The relevant check is the Multi-chassis LAGs and active paths outcome.
At a design studio in Berlin, this measures a different network requirement, First-hop gateway redundancy and failover. The case describes that an engineer configures static aggregation on one side and LACP active on the other, so accepting this result would leave the primary fault without direct verification.