CSCur53506 - broadcast flood when allowed vlan add/remove on protected port

Question

Does not this Bug occur in IOS 15.XX ?

Answer 1

Thanks for the reply - yes I did save it.  All the other ports have the command.  But when the phone boots up - it ends up disappearing after the above occurs:
When the phone boots up - it seems to encounter a broadcast storm (???) the port goes from this:
interface gigabitethernet36
switchport trunk allowed vlan add 10
to this:
interface gigabitethernet36
storm-control broadcast enable
storm-control broadcast level 10
storm-control include-multicast
port security max 10
port security mode max-addresses
port security discard trap 60
spanning-tree portfast
switchport trunk allowed vlan add 10
macro description ip_phone
!next command is internal.
macro auto smartport dynamic_type ip_phone
Then in a minute or two I'm no longer able to ping the voicelan - and when I do a show run - gi36 isn't even visible.  However, the PC that is also on gi36 works fine.
If I then reissue the 'switchport trunk allowed vlan add 10' to gi36 - the phone is pingable - and works continuously until the phone is rebooted.
So I'm not really sure what happens during the bootup that causes this to happen, or a way to try and prevent it from occuring.