S5120V2-52P-LI 日志提示频繁UP/down

%Jan 1 08:26:48:587 2013 F8-10.30.1.229-jieru IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/48 changed to up. %Jan 1 08:26:48:596 2013 F8-10.30.1.229-jieru IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/48 changed to up. %Jan 1 08:26:48:621 2013 F8-10.30.1.229-jieru IFNET/3/PHY_UPDOWN: Physical state on the interface Vlan-interface200 changed to up. %Jan 1 08:26:48:623 2013 F8-10.30.1.229-jieru IFNET/3/PHY_UPDOWN: Physical state on the interface Vlan-interface501 changed to up. %Jan 1 08:26:48:627 2013 F8-10.30.1.229-jieru IFNET/5/LINK_UPDOWN: Line protocol state on the interface Vlan-interface200 changed to up. %Jan 1 08:26:48:631 2013 F8-10.30.1.229-jieru IFNET/5/LINK_UPDOWN: Line protocol state on the interface Vlan-interface501 changed to up. %Jan 1 08:26:50:314 2013 F8-10.30.1.229-jieru IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/48 changed to down. %Jan 1 08:26:50:314 2013 F8-10.30.1.229-jieru IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/48 changed to down. %Jan 1 08:26:50:320 2013 F8-10.30.1.229-jieru IFNET/3/PHY_UPDOWN: Physical state on the interface Vlan-interface200 changed to down. %Jan 1 08:26:50:320 2013 F8-10.30.1.229-jieru IFNET/3/PHY_UPDOWN: Physical state on the interface Vlan-interface501 changed to down. %Jan 1 08:26:50:322 2013 F8-10.30.1.229-jieru IFNET/5/LINK_UPDOWN: Line protocol state on the interface Vlan-interface200 changed to down. %Jan 1 08:26:50:322 2013 F8-10.30.1.229-jieru IFNET/5/LINK_UPDOWN: Line protocol state on the interface Vlan-interface501 changed to down. %Jan 1 08:26:52:753 2013 F8-10.30.1.229-jieru IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/48 changed to up. %Jan 1 08:26:52:762 2013 F8-10.30.1.229-jieru IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/48 changed to up. %Jan 1 08:26:52:765 2013 F8-10.30.1.229-jieru IFNET/3/PHY_UPDOWN: Physical state on the interface Vlan-interface200 changed to up. %Jan 1 08:26:52:766 2013 F8-10.30.1.229-jieru IFNET/3/PHY_UPDOWN: Physical state on the interface Vlan-interface501 changed to up. %Jan 1 08:26:52:779 2013 F8-10.30.1.229-jieru STP/6/STP_DETECTED_TC: Instance 0's port GigabitEthernet1/0/48 detected a topology change. %Jan 1 08:26:52:784 2013 F8-10.30.1.229-jieru IFNET/5/LINK_UPDOWN: Line protocol state on the interface Vlan-interface200 changed to up. %Jan 1 08:26:52:786 2013 F8-10.30.1.229-jieru IFNET/5/LINK_UPDOWN: Line protocol state on the interface Vlan-interface501 changed to up. %Jan 1 08:26:52:807 2013 F8-10.30.1.229-jieru STP/6/STP_NOTIFIED_TC: Instance 0's port GigabitEthernet1/0/48 was notified a topology change. %Jan 1 08:26:52:955 2013 F8-10.30.1.229-jieru LLDP/6/LLDP_CREATE_NEIGHBOR: Nearest bridge agent neighbor created on port GigabitEthernet1/0/48 (IfIndex 48), neighbor's chassis ID is 90f7-b2d4-89e7, port ID is GigabitEthernet1/0/8.

交换机一直重新频繁的提示这个报错，而且网络也受到了影响要怎么解决。