You notice that the secondary node of a chassis cluster has become disabled. What caused
this behavior?
A.
An IPsec tunnel between the two devices failed.
B.
The fxp0 interface on the secondary device failed.
C.
The control link between the devices failed.
D.
A reth on the secondary device failed.
If the control link has gone down but the Data link is still up there will be a heartbeat of sorts that tells the secondary firewall to become disabled. This is a controlled failure and the secondary firewall will go in to the disabled firewall.
C