07-26-2019 12:55 AM
HI Expert,
We plan to do image upgrade on ISR4431/K9 from version 16.3.4 to 16.9.3. Is there any precautions ? I also have another problem that is the Front Panel 4 ports Gigabitethernet Module named ISR4431-X-4x1GE how to work If ISR4K ESP not work or down?
Thanks
07-26-2019 03:03 AM
@Rps-Cheers wrote:
We plan to do image upgrade on ISR4431/K9 from version 16.3.4 to 16.9.3. Is there any precautions
Has anyone read the Release Notes of 16.9.3?
Is this router going to do any NAT? If it is, has anyone checked out CSCvo36188?
07-26-2019 03:41 AM
Hello Leo,
thanks for your advice
the bug description says CG-NAT that should be Carrier Grade NAT and not simple NAT.
However, the bug says that it is enough to clear nat entries to cause a router crash !!!!!!!!!!!!!!
The list of affected platforms include multi layer switches like C3850 that does not support NAT at all.
I agree that if the router is configured for NAT it would be better to think carefully before upgrading to this image.
Best Regards
Giuseppe
07-26-2019 05:28 AM
07-26-2019 06:15 AM
Hello Leo,
I don't know if it is fresh information, in the bug page in the list of fixed in releases reports a 16.9.(3.59) that looks like a patch for 16.9.3
Hope to help
Giuseppe
07-26-2019 07:31 AM
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