Dear Xperts,
Enabled 10 % Multicast & broadcast storm control in the L3 switch interface connected towards L2 switch. Unfortunately user NIC card malfunctioning which generated high frequent broadcast made L3 switch CPU to hit 99%.
With the help of netdr we determined the MAC address and post shutting the port resolved the issue.
Kindly assist as in providing root-cause behind this abnormality.
L3 switch configurations:
interface GigabitEthernet1/10
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 903
switchport trunk allowed vlan 95,142,281,418,501,578,737,751,755,802,828,903
switchport trunk allowed vlan add 993
switchport mode trunk
storm-control broadcast level 10.00
storm-control multicast level 10.00
channel-protocol lacp
channel-group 256 mode active
end
L2 CatOS switch configurations:
#module 1 : 2-port 1000BaseX Supervisor
set vlan 903 1/1-2
clear trunk 1/1 2-94,97-280,282-417,419-577,579-736,738-750,752-754,756-801,803,805-827,829-902,904-992,994-1001
set trunk 1/1 on dot1q 1,95-96,281,418,578,737,751,755,802,804,828,903,993,1002-1005,1025-4094
clear trunk 1/2 2-94,96-141,143-280,282-417,419-500,502-577,579-736,738-750,752-754,756-801,803,805-827,829-902,904-992,994-1005,1025-4094
set trunk 1/2 on dot1q 1,95,142,281,418,501,578,737,751,755,802,804,828,903,993
set port lacp-channel 1/1-2 mode active
!
Regards,
Murugan
