Release Notes for the Cisco Catalyst Blade Switch 3120 for HP, Cisco IOS Release 15.0(2)SE and Later

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Release Notes for Cisco Catalyst Blade Switch 3120 for HP, Cisco IOS Release 15.0(2)SE and Later
OL-27316-02
Resolved Caveats
Heavy traffic load conditions may cause the loop guard protection function to be automatically
activated and almost immediately deactivated. These conditions can be caused by entering the
shutdown and no shutdown interface configuration commands or by interface link flaps on more
than forty ports. These log messages appear:
%SPANTREE-2-LOOPGUARD_BLOCK: Loop guard blocking port GigabitEthernet1/0/1 on MST0.
%SPANTREE-2-LOOPGUARD_UNBLOCK: Loop guard unblocking port GigabitEthernet1/0/1 on
MST0.
There is no workaround.
• CSCua87594
When a peer switch sends inferior Bridge Protocol Data Units (BPDUs) on the blocking port of the
Cisco switch (with the proposal bit ON), the Cisco switch waits for three such BPDUs before
responding with a better BPDU. This leads to a convergence time of more than 5 seconds. The
problem appears under these conditions:
– The Cisco switch is not configured as the root switch.
– The Cisco switch uses Multiple Spanning-Tree Protocol (MSTP) and the peer switch uses Rapid
Spanning Tree Protocol (RSTP) or rapid per-VLAN spanning-tree plus (rapid PVST+).
There is no workaround.
• CSCub14238
With switches running Cisco IOS Release 15.0(2)SE, there was a problem when port-based address
allocation was configured. The DHCP client did not receive IP addresses from the server if the client
ID was configured as an ASCII string or if the subscriber ID was used as the client ID.
This problem has been fixed now. No action is required.
• CSCub14641
When you configure and save the monitor session source interface, the configuration is not saved
after reboot.
There is no workaround.
• CSCub93357
If an interface is configured with the switchport port-security maximum 1 vlan command, the
following error message is displayed:
%PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC
address XXXX.XXXX.XXXX on port <interface>
There is no workaround.
• CSCuc03555
The flash memory is corrupted when you format the flash manually.
The workaround is to reload the switch. (Note that this will erase the flash memory, and you will
need to reload the software image using TFTP, a USB drive, or a serial cable.
• CSCuc17720
If the Performance Monitor cache is displayed (using the show performance monitor cache
command) and you attempt to stop the command output display by entering the q keyword, there is
an unusually long delay before the output is stopped.
The workaround is to enter the term len 0 privileged EXEC command so that all command outputs
are displayed without any breaks.