Catalyst 4500-X Fixed 10 GE Aggregation Switch
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Which ISSU method should you use? 4-step or 1-step?<br />
• The 4-step method: hands-on, interactive, and can be monitored closely.<br />
• User controls the images and commands manually<br />
• Complete within a 45 minute window or the system will revert itself back to the previous image<br />
• The 1-step method – “changeversion” is not very interactive; but it’s more convenient, and<br />
• If you have already completed a 4-step ISSU on another similar system<br />
• If you are confident that the pre-and post images you are using are compatible.<br />
• You can use changeversion to schedule ISSU upgrades to start now or later.<br />
• BOTH methods require you to first copy the current and a compatible upgrade images to bootflash on<br />
both active and standby.<br />
• Copy running-configs to bootflash:saved.name.cfg bef<br />
© 2011 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 56
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