Hello Ashu,
make sure that both ends of the connection are configured in the same way. Check which port is connected to your FastEthernet0/6, if it is a trunk, make sure that e.g. native Vlan and the encapsulation type match.
Here are the error message explanations from CCO:
Error Message
%SPANTREE-7-BLOCK_PORT_TYPE : Blocking [chars] on [chars]. Inconsistent port type.
Explanation The specified interface has an inconsistent port type and is being held in a spanning-tree blocking state until the port type inconsistency is resolved.
Recommended Action Verify that the configuration and operational state of the listed interface and that of the interface to which it is connected have the same mode (access or trunk). If the mode is trunk, verify that both interfaces use the same encapsulation (ISL or 802.1Q). When these parameters are consistent, spanning tree will automatically unblock the interfaces as appropriate.
Error Message
%SPANTREE-2-BLOCK_PVID_LOCAL : Blocking [chars] on [chars]. Inconsistent local vlan.
Explanation The spanning-tree port with the specified spanning-tree instance and interface has a port VLAN ID inconsistency and will be held in spanning-tree blocking state until the port VLAN ID inconsistency is resolved. The specified spanning-tree instance is that of the native VLAN ID of the specified interface.
Recommended Action Verify that the configuration of the native VLAN ID is consistent on the interfaces on each end of the 802.1Q trunk connection. Once the configuration is corrected, spanning tree will automatically unblock the interfaces as appropriate.
HTH,
GP
