Cisco Cisco IOS Software Release 12.2(53)SE

CSCtc30872

When a BPDU guard is globally enabled on a switch and the access VLAN is a VLAN other than 
VLAN 1, BPDU guard does not run on a multiple VLAN access port.

The workaround is to enable BPDU guard on the port.

CSCtc57809

When the no mac address-table static mac-addr vlan vlan-id interface interface-id global 
configuration command is used to remove a dynamically learned MAC address, the switch fails 
under these conditions:

The physical interface is in a no shut state.

The MAC address is first dynamically learned and then changed to static.

There is no workaround.

CSCtc67421

When 24 phones connected to PoE ports start at the same time, LLDP for power management fails.

The workaround is to start the phones one at a time. This might not work after a power outage or 
other power failure event.

CSCtd31242

An IP phone loses network connectivity under these conditions:

The IP phone is authenticated by MAB (in Open1x mode) on a supplicant switch.

The supplicant switch is connected to an authenticator switch through the NEAT protocol.

A call is placed using the IP phone. After approximately 5 minutes, network connectivity to the 
phone is lost.

The workaround is to statically configure the MAC address of the IP phone on the authenticator 
switch.

CSCtd72456

After you have entered the snmp-server host informs global configuration command to enable 
SNMP informs on a switch, the switch might fail if you enter the show snmp pending user EXEC 
command.

There is no workaround. Do not enter the show command when SNMP informs are enabled.