If i use "show cdp neighbours detail" I see two 6509 with native IOS (all others catOS)with same IP address (127.0.0.12).
On both 6509, VLAN1 and a loopback interface has it own IP address.
Because there are two machines with same IP address for CDP (127.0.0.12) CiscoWorks can`t work with them.
How can I change these addresses?
Well, a little progress!
1)I would guess the original problem is caused by not allowing VLAN1 on the trunk.
Are you able to check some trunk where VLAN1 is allowed?
Remember: CDP is sent always in VLAN1 on trunks. Even when VLAN1 is not allowed on the trunk, CDP, VTP, CMP and other service protocols should be sent via VLAN1, only user data and STP are stopped. But some IOSes are having bugs related to this feature.
2)Another possibility is EtherChannel misconfiguration.
Remember: All ports connected to the same channel must have the same speed, duplex and VLANs ALLOWED.
3)Which VLAN are you using as the management one? I suppose VLAN1 (the only IP address of the switch is on int VLAN1 you said). So why VLAN1 is not allowed on the trunk?