He there, I have a stack with a few bps2000. There are vlan2, vlan3 and vlan10, where vlan10 - common vlan. Pinging working fine, so pc's from vlan2 can only ping other pc's from the vlan2, can ping servers from the common vlan10 and can't ping pc's from vlan3. All stack ports are access ports. but if I put sniffer in the network and start to listen, I can see all traffic inside particular vlan!
for example:
port1: vlan2,vlan10 (pvid 2) port2: vlan2,vlan10 (pvid 2) port3: vlan3,vlan10 (pvid 3) .... etc.. port10: vlan2, vlan3, vlan10 (pvid 10)