[c-nsp] Same MAC on different VLAN

[Leslie Meade]

Ok my switching understanding is fairly limited..

But can anyone shed some light on the following for me

 

K-SW-02#sh mac address-table  | inc Fa0/8

172    000b.5ff9.3071    DYNAMIC     Fa0/8 à IP phone

  26    000b.5ff9.3071    DYNAMIC     Fa0/8 àip phone

  26    e0cb.4e68.bbfd    DYNAMIC     Fa0/8

 

Why would I get the same mac address on two different vlans ?

 

 

interface FastEthernet0/8

switchport access vlan 26

switchport mode access

switchport voice vlan 172

srr-queue bandwidth share 1 70 25 5

srr-queue bandwidth shape 3 3 0 0

priority-queue out

spanning-tree portfast

spanning-tree bpduguard enable

service-policy input QOS-POLICY

end

 

 

Cheers

 

Leslie