Hi all,
I am facing a strange issue here on a production switch (Cisco 2960 IOS 12.2(55)SE5)
I have the following entry in my cam table:
switch#show mac add int gi0/10
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
123 1234.1234.1234 STATIC Drop
Although this mac-id has not been statically entered in any way it shows up as static and I can't remove it. I tried all possible clear commands without success. As a last step I reset the interface to the default empty config just configuring it as access port in an office vlan.
I am trying to avoid having to reload the switch to clear the related memory as this generates downtime. Has anyone ever faced such an issue and can advise me?
Logs:
switch#show mac add add 1234.1234.1234
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
123 1234.1234.1234 STATIC Drop <-- note the "interface"
Total Mac Addresses for this criterion: 1
Current configuration : 47 bytes
!
interface GigabitEthernet0/10
shutdown
end
switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
switch(config)#int gi0/10
switch(config-if)#sw mod ac
switch(config-if)#sw ac vl 123
switch(config-if)#no sh
switch(config-if)#do sh mac add int gi0/10
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
123 1234.1234.1234 STATIC Drop
Total Mac Addresses for this criterion: 1
switch(config)#clear mac address-table static 1234.1234.1234 vlan 123 drop
MAC address could not be removed.
Address is not user configured
switch#clear mac add dynamic address 1234.1234.1234
switch#sh mac add add 1234.1234.1234
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
123 1234.1234.1234 STATIC Drop
Total Mac Addresses for this criterion: 1
