Cisco Prime Infastructure connectivity to Switches

I am running into an issue with Cisco Prime Infrastructure 2.1 and a couple of our switches.  When I initially added these Cisco 2960's to Prime the had connectivity and they discovered everything correctly.  After a couple of days I can no longer ping my two switches from Prime and Prime from my two switches, I get an unreachable error.  There is no ACL that would be preventing connectivity. Any suggestion on what this may be? 

This was caused by interface vlan 1 not being shut down on the switch.  Cisco Prime sits on vlan 1 and when it hit the switch it was trying to route back out on vlan 1 which has no ip address assigned.

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    ***Ratings Encourages Contributors ***

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