Question 50
At North Residence, a campus core VSX design uses an undersized ISL and traffic fails during one access uplink outage. What safety boundary prevents the same campus failure in future deployments?
Explanation
Correct Answer
For North Residence, the decisive mechanism is VSX inter-switch link. VSX peers synchronize selected state over an ISL while retaining independent control planes. Protect ISL paths and preserve independent keepalive failure domains is an enduring limitation on the operational risk, not simply a one-time passing test.
Incorrect Answers
This is relevant to AOS 10 gateway cluster, where an AOS 10 gateway cluster improves tunneled WLAN availability but still needs correct forwarding and policy In the North Residence case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is vSX peers synchronize selected state over an ISL while retaining independent control planes
This is relevant to VRRP redundant gateway, where VRRP supplies virtual first-hop gateway failover between eligible routing peers In the North Residence case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is vSX peers synchronize selected state over an ISL while retaining independent control planes
This is relevant to Loop protection, where loop detection complements STP by containing accidental edge loops In the North Residence case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is vSX peers synchronize selected state over an ISL while retaining independent control planes