So basically we have a VOIP setup with the PC connecting to the back of the phone. Nothing fancy. I wanted to turn port security on to only allow the phone and the PC to prevent hubs from being connected. i notice when I check out the MAC addresses associated with that port that the phones VLAN is showing up in both the VOIP and Data VLAN (81 is the Data VLAN. 126 is the VOIP VLAN) Switch01#show mac address-table | i 1/0/8   81    0024.7edb.3336    DYNAMIC     Gi1/0/8 81    0060.b955.dec6    DYNAMIC     Gi1/0/8 126    0060.b955.dec6    DYNAMIC     Gi1/0/8 After talking to colleauges we've just assumed this has something to do with the phone acting as a switch. I assumed that enabled 2 MAC addresses on the port woul dbe ok, as there are 2 MAC addresses, its just one of them is showing up twice. When I enabled port-security, the port worked(i.e no security violation) BUT the phone MAC address appearing in the Data VLAN dissappeared. Switch01#sh mac address-table | i 1/0/8   81    0024.7edb.3336    STATIC      Gi1/0/8 126    0060.b955.dec6    STATIC      Gi1/0/8 Secure Port  MaxSecureAddr  CurrentAddr  SecurityViolation  Security Action                 (Count)       (Count)          (Count) ---------------------------------------------------------------------------     Gi1/0/8              2           2                  0         Shutdown Thought this was a bit wierd. The act of turning on port-security seems to stop the MAC addresses form showing up but does not cause any effect on the port. Now this line in the debug shows me exactly what I'm looking for: It's the MAC address that is now missing in VLAN 81: Apr 12 06:54:45.878: PSECURE: swidb = GigabitEthernet1/0/8 mac_addr = 0060.b955.dec6 vlanid = 81 Can't rreally determine exactly what its doing, but this MAC addresses does not get associated with the port on the switch. I suppose what I'm getting at is: Why does this MAC address go into the data VLAN? And why does it disappear after port-security is enabled when it is not causing a violation? ... View more

Hi all Adding a 3750 into an existing stack of 2 x 3750's today and wanted to confirm if i can update the switch after I connect it up. I would have thought that I would just be able to copy from flash1: to flash3: (after making some space) but someone here informed me they did not think that was the case and it may require the software to be a tar archive when you do it acros the stackwise links. Can anyone advise? Cheers ... View more