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Supervisor removal on Nexus 7000 and network stability

Hello,

According to CCO when we initiate a switchover in dual Sup N7K environment either manualy, using ISSU or when it's initiated by some error when restarting processes, the switchover should be non-disruptive (assuming there is NSF configured). But, what happens when SUP fails completely or I manualy remove the Sup from chassis? Should it be nondisruptive or we can expect some downtime and network instability? I noticed during Sup removal that the whole network became unstable for several minutes. ESX hosts lost clustering, servers became unavailable, etc. I have no detail logs from that time, but it was not as smooth as the customer expected it to be (asked why 2 Sups then?)

Best regards,

Krzysztof

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