JNCIE-SEC Practice Questions - Juniper Networks Certified Expert, Security (JNCIE-SEC) Exam

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During a JNCIE-SEC lab scenario, you are configuring chassis clustering on two SRX5800 devices. After the cluster forms, you observe that the primary node's control plane is unresponsive after a fabric link failure, and both nodes simultaneously attempt to take primary status. Which condition describes this failure mode and what is the correct recovery procedure?

This is a split-brain condition; recovery requires manually setting the priority to 0 on the unintended primary using 'set chassis cluster redundancy-group 0 node 1 priority 0' and rebooting This is a split-brain condition caused by simultaneous loss of both the control link and fabric links; recovery requires connecting to each node's console and running 'request chassis cluster in-service-upgrade' on the lower-priority node to restore arbitration This is a fabric link failure causing split-brain; recovery requires connecting to the console of the node that should be secondary and issuing 'request chassis cluster failover reset redundancy-group 1' followed by verifying HA state with 'show chassis cluster status' This is a normal failover event; the secondary node automatically becomes primary and no intervention is needed as long as the control link remains intact

Correct Answer:

This is a fabric link failure causing split-brain; recovery requires connecting to the console of the node that should be secondary and issuing 'request chassis cluster failover reset redundancy-group 1' followed by verifying HA state with 'show chassis cluster status'

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