350-601 · Question #61
Which statement about the impact of a rolling EPLD upgrade on a Cisco MDS 9000 Series Switch is true?
The correct answer is B. Only the modules that are being upgraded are disrupted. An EPLD (Electronic Programmable Logic Device) rolling upgrade on the Cisco MDS 9000 upgrades one module at a time. Only the module currently being upgraded experiences a disruption (it is power-cycled during the EPLD programming); all other modules and their traffic continue…
Question
Which statement about the impact of a rolling EPLD upgrade on a Cisco MDS 9000 Series Switch is true?
Options
- AThe upgrade can be performed from the standby supervisor module.
- BOnly the modules that are being upgraded are disrupted.
- CAll modules on the switch are disrupted.
- DAn EPLD upgrade is nondisruptive.
How the community answered
(38 responses)- A5% (2)
- B92% (35)
- C3% (1)
Explanation
An EPLD (Electronic Programmable Logic Device) rolling upgrade on the Cisco MDS 9000 upgrades one module at a time. Only the module currently being upgraded experiences a disruption (it is power-cycled during the EPLD programming); all other modules and their traffic continue to operate normally. This makes rolling EPLD upgrades minimally disruptive compared to a full chassis reload. Option A is incorrect-EPLD upgrades are performed from the active supervisor, not the standby. Option C is incorrect-a rolling upgrade specifically avoids disrupting all modules simultaneously. Option D is incorrect-the module being upgraded is always disrupted during the power cycle required to reprogram the EPLD.
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