斑竹 请看下面是什么错误，为什么21端口不正常

gxf77813

42:58: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/21, changed state to down
01:42:59: %SPANTREE-7-RECV_1Q_NON_TRUNK: Received 802.1Q BPDU on non trunk FastEthernet0/21 VLAN1.
01:42:59: %SPANTREE-7-BLOCK_PORT_TYPE: Blocking FastEthernet0/21 on VLAN0001. Inconsistent port type.
01:42:59: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/21, changed state to up
01:43:48: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/28, changed state to down
01:43:49: %LINK-3-UPDOWN: Interface FastEthernet0/28, changed state to up
01:43:53: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/28, changed state to up
01:43:55: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan100, changed state to up
01:43:57: %SYS-5-CONFIG_I: Configured from console by vty0 (10.183.64.140)
01:44:37: %SPANTREE-7-RECV_1Q_NON_TRUNK: Received 802.1Q BPDU on non trunk FastEthernet0/21 VLAN100.
01:44:37: %SPANTREE-7-BLOCK_PORT_TYPE: Blocking FastEthernet0/21 on VLAN0100. Inconsistent port type.
01:44:47: %SPANTREE-7-RECV_1Q_NON_TRUNK: Received 802.1Q BPDU on non trunk FastEthernet0/21 VLAN100.
01:44:47: %SPANTREE-7-BLOCK_PORT_TYPE: Blocking FastEthernet0/21 on VLAN0100. Inconsistent port type.
01:44:50: %SYS-5-CONFIG_I: Configured from console by vty0 (10.183.64.140)
01:45:57: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/21, changed state to down
01:45:58: %LINK-3-UPDOWN: Interface FastEthernet0/21, changed state to down
01:46:07: %LINK-3-UPDOWN: Interface FastEthernet0/12, changed state to up
01:46:08: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/12, changed state to up
01:46:09: %SPANTREE-7-RECV_1Q_NON_TRUNK: Received 802.1Q BPDU on non trunk FastEthernet0/12 VLAN1.
01:46:09: %SPANTREE-7-BLOCK_PORT_TYPE: Blocking FastEthernet0/12 on VLAN0001. Inconsistent port type.
01:46:20: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/12, changed state to down
01:46:25: %SPANTREE-7-RECV_1Q_NON_TRUNK: Received 802.1Q BPDU on non trunk FastEthernet0/21 VLAN100.
01:46:25: %SPANTREE-7-BLOCK_PORT_TYPE: Blocking FastEthernet0/21 on VLAN0100. Inconsistent port type.
01:46:26: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/21, changed state to up
01:54:05: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/14, changed state to down
16:22:13: %LINK-3-UPDOWN: Interface FastEthernet0/9, changed state to up
16:22:15: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/9, changed state to up
16:22:36: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/9, changed state to down
16:22:37: %LINK-3-UPDOWN: Interface FastEthernet0/9, changed state to up
16:22:40: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/9, changed state to up
16:41:44: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/9, changed state to down
18:31:30: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/21, changed state to down
18:31:32: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/21, changed state to up
18:31:32: %SPANTREE-7-RECV_1Q_NON_TRUNK: Received 802.1Q BPDU on non trunk FastEthernet0/21 VLAN100.
18:31:32: %SPANTREE-7-BLOCK_PORT_TYPE: Blocking FastEthernet0/21 on VLAN0100. Inconsistent port type.
18:31:36: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/21, changed state to down
18:31:37: %LINK-3-UPDOWN: Interface FastEthernet0/21, changed state to down
18:31:38: %SPANTREE-7-RECV_1Q_NON_TRUNK: Received 802.1Q BPDU on non trunk FastEthernet0/21 VLAN100.
18:31:38: %SPANTREE-7-BLOCK_PORT_TYPE: Blocking FastEthernet0/21 on VLAN0100. Inconsistent port type.
18:31:41: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/21, changed state to up
18:31:44: %SYS-5-CONFIG_I: Configured from console by vty0 (10.183.112.35)
18:31:44: %LINK-3-UPDOWN: Interface FastEthernet0/21, changed state to down
18:31:46: %SPANTREE-7-RECV_1Q_NON_TRUNK: Received 802.1Q BPDU on non trunk FastEthernet0/21 VLAN100.
18:31:46: %SPANTREE-7-BLOCK_PORT_TYPE: Blocking FastEthernet0/21 on VLAN0100. Inconsistent port type.

deeperpurple

因为“01:42:59: %SPANTREE-7-RECV_1Q_NON_TRUNK: Received 802.1Q BPDU on non trunk FastEthernet0/21 VLANXXX
”
所以“18:31:46: %SPANTREE-7-BLOCK_PORT_TYPE: Blocking FastEthernet0/21 on VLANXXX. Inconsistent port type.”

确保FastEthernet0/21端口和它的对端接口有相同的封装类型