4 floors all with 2960 Cisco L2 Switch stacks.
Come back to a Juniper core in server room
off the core Juniper stack is a L2 Juniper with all servers in it (access ports)
the floor switch stacks all have a managment vlan 210 - They all have the same Gateway on same management vlan. They all can ping all other servers. However ONLY the floor 3 switch stack can ping this DController from a ssh session. - all other floor switch stacks cant do this - its a windows 2008 server/DC. All of the other floor stacks cant ping from ssh session. From the DC I can ping back to the floor 3 stack only. There appears to be no difference at all between the config on level3 stack and the other floor stacks. The firewall on the DC is NOT on. There is NO firewall between the stacks and core. No ACLs on L3. I cant think of any reason why the ping doesnt work - the DC is also our ntp server - dont know if related though