I have two Catalyst 4507 as core switch. They are uplink with each other on redundent fiber cable. I am also running HSRP for each vlan configured on it. Everything was working fine. But this morning suddendly communication stop. No response of telnet. When I console the switch i found following errors on cosole
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
on the 2nd core switch i found this error on console
15w4d: %C4K_EBM-4-HOSTFLAPPING: Host 00:0E:0C:EB:37:2F in vlan 2 is flapping between port Gi3/1 and port Gi3/2
15w4d: %C4K_EBM-4-HOSTFLAPPING: Host 00:1D:45:61:A4:2B in vlan 3 is flapping between port Gi3/1 and port Gi3/2
15w4d: %C4K_EBM-4-HOSTFLAPPING: Host 00:0E:0C:C0:4B:50 in vlan 2 is flapping between port Gi3/2 and port Gi3/1
15w4d: %C4K_EBM-4-HOSTFLAPPING: Host 00:1D:45:61:A3:C5 in vlan 3 is flapping between port Gi3/2 and port Gi3/1
15w4d: %HSRP-4-DUPADDR: Duplicate address 172.28.63.66 on Vlan2, sourced by 0000.0c07.ac0a
Then i remove the rundent fiber uplink and switches start responding. Even after placing the redundent fiber uplink back starts working.
why i got memeory error on core switch 1 and why this happened. I didnt change anything for the last two months.
IOS Version is 12.2(25)EWA9
