how to configure SNMP v3 with read only access in switches ? while configurating cisco prime infrastructure with SNMP V3 there is no option for read-only (RO) like SNMP v2c . 

trunk link between two switches line protocol up and down fluctuating

000085: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: System previously crashed with the following message:000086: *Mar 1 03:01:33: %PLATFORM-1-CRASHED: Cisco IOS Software, C3560 Software (C3560-IPBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)000087: *...