Release Notes for Cisco Catalyst Blade Switch 3120 for HP, Cisco IOS Release 12.2(55)SE and Later

OL-22860-04

Resolved Caveats

shut down, the device MAC address is removed from the master switch, but it is retained in the

member switch security tables. When the interface is re-enabled, the device MAC address is restored

to the master switch configuration.

The workaround is to use port security without dot1x authentication.

Caveats Resolved in Cisco IOS Release 12.2(55)SE2 and Earlier

• CSCsg28558

Cisco X2-10GB-CX4 transceiver modules with a version identification number lower than V03

might be difficult to install because of a size discrepancy.

The workaround is to use modules with a version identification number of V03 or later.

• CSCsg91027

When the logging event-spanning-tree interface configuration command is configured and logging

to the console is enabled, a topology change might generate a large number of logging messages,

causing high CPU utilization. CPU utilization can increase with the number of spanning-tree

instances and the number of interfaces configured with the logging event-spanning-tree interface

configuration command. This condition adversely affects how the switch operates and could cause

problems such as STP convergence delay.

High CPU utilization can also occur with other conditions, such as when debug messages are logged

at a high rate to the console.

Use one of these workarounds:

Disable logging to the console.

Rate-limit logging messages to the console.

Remove the logging event spanning-tree interface configuration command from the interfaces.

• CSCsu31853

The buffer space of a switch running TCP applications is full while the TCP sessions are in the

TIME_WAIT state. Buffer space becomes available after the TCP session the closed.

There is no workaround.

• CSCsz18634

On a switch running Cisco IOS release 12.2(46)SE, the output of the show interfaces privileged

EXEC command shows 0 packets for port channel input and output rates.

The workaround is to reload the switch by entering the reload privileged EXEC command.

• CSCtb08823

SNMP requests on the stpxRSTPPortRoleTable object only return information for the stack master.

There is no workaround.

• CSCtb25230

When a switch stack is configured with DHCP snooping enabled on the host VLAN, hosts connected

to the stack master receive bootp packets, but the a packet might not be forwarded to the end hosts

connected to stack member switches. The behavior depends on which interface in the stack received

the packet.

The workaround is to disable DHCP snooping for the affected VLAN.