We have a network with four 3750's at the core doing HSRP for several VLANS and running OSPF. There are trunk ports from these devices connecting other swithes in various buildings on the campus. All of our servers and some outlying users are on VLAN5. Periodically our outlying users on this VLAN will lose connectivity to the servers. There are no obvious log entries to indicate any problems with OSPF (the routes to the gateway are in the routing tables), HSRP or the trunks. This morning when this happened, we did a shut/no shut the user port and connectivity came back up.
Does any body have an indication of what could be causing this temporary loss of connectivity? It seems to only happen with end devices in the same VLAN as the servers going across the trunk ports - users in other VLANS don't seem to have this issue.