I have 14 AIR-CAP3502E-E-K9 that are running 12.4(23c)JA7 and i am trying to upgrade to 15.3(3)JD12, but it keeps failing.I cannot find any information if this this is possible or do i need a stepped upgrade....

Is there a way of configuring DNA Center to either send an email or some sort of alert when certificates are about to expire.?

I Have a number of Cisco 897VA's. I have configured service-policy output QOS-897-WAN-OUT-PARENT on G8. However when i try to configure it on G0 as well it fails with the following error.#service-policy output QOS-897-WAN-OUT-PARENTConfiguration fail...

N7K can i copy tftp straight to the startup config.?

I have 2 Nexus 7K's directly connected over a 10 G link. When i do a ping across it as below i get the following results:-packet size of 1500 it will drop a packet every 35.packet size of 1500 it will drop a packet every 35.packet size of 1500 it wil...