Hi, I have problem for some port short up/down in 3 sec.
I have tried replace cisco 2960 on linsys SPS224G4 switch and everything working correctly
This UP/DOWN happens about 10 times per day
How to found the problem?
In the log:
Nov 8 2012 15:46:05.504 EET: %SPANTREE-6-PORT_STATE: Port Fa0/9 instance 115 moving from forwarding to disabled
Nov 8 2012 15:46:05.504 EET: %SPANTREE-7-PORTDEL_SUCCESS: FastEthernet0/9 deleted from Vlan 115
Nov 8 2012 15:46:06.519 EET: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/9, changed state to down
Nov 8 2012 15:46:07.215 EET: %SPANTREE-6-PORT_STATE: Port Fa0/9 instance 115 moving from disabled to blocking
Nov 8 2012 15:46:07.215 EET: %SPANTREE-6-PORT_STATE: Port Fa0/9 instance 115 moving from blocking to forwarding
Nov 8 2012 15:46:08.524 EET: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/9, changed state to up
Port configured:
interface FastEthernet0/9
switchport access vlan 115
switchport mode access
switchport nonegotiate
switchport protected
switchport block multicast
switchport block unicast
switchport port-security maximum 8
switchport port-security
switchport port-security aging time 30
switchport port-security violation restrict
switchport port-security aging type inactivity
ip device tracking maximum 8
logging event nfas-status
logging event trunk-status
logging event bundle-status
logging event spanning-tree
logging event status
logging event subif-link-status
small-frame violation-rate 1000
snmp trap mac-notification change added
snmp trap mac-notification change removed
snmp trap link-status permit duplicates
storm-control broadcast level 10.00
storm-control multicast level 40.00
storm-control unicast level 90.00
storm-control action trap
no vtp
no lldp transmit
no lldp receive
no cdp enable
spanning-tree bpdufilter enable
spanning-tree bpduguard enable
spanning-tree guard root
spanning-tree portfast
hold-queue 4096 in
hold-queue 4096 out
ip igmp max-groups 8
ip igmp filter 1
ip dhcp snooping limit rate 15
end
Software version:
Cisco IOS Software, C2960 Software (C2960-LANLITEK9-M), Version 12.2(55)SE6, RELEASE SOFTWARE (fc1)
