Specifications

Caveats for Cisco IOS Release 12.0

78-6455-12

Resolved Caveats—Cisco IOS Release 12.0(10)

• CSCdp43778

If you configure a subinterface on a Cisco 2600 series router for Operation, Administration, and

Maintenance (OAM), and the permanent virtual circuit (PVC) bounces, the PVC and the interface

will not come back up unless you enter the shutdown command followed by the no shutdown

command on the interface. This situation does not occur if the PVC is configured without OAM.

There is no workaround.

• CSCdp47676

The show interface display EXEC command might show that a Cisco 2-port High-Speed Serial

Interface (HSSI) or a Cisco PA-2T3 port adapter is experiencing abnormal transmit underruns on

some Versatile Interface Processors (VIPs) with fast protocol control information (PCI)

transactions. There is no workaround.

• CSCdp54245

Multiprotocol over ATM (MPOA) shortcuts might not check for the frame sizes being sent on them.

If the frame size exceeds the maximum transmission unit (MTU) size of the egress Multiprotocol

over ATM Client (MPC), egress MPC drops the packet, resulting in the loss of connectivity.

Workaround: Configure matching MTUs on either side of shortcuts (for example, all LAN

Emulation Clients (LECs) that are served by ingress and egress MPCs should have the same MTU).

If MTUs cannot be altered, then do not configure MPOA on both sides.

• CSCdp57307

A Cisco Catalyst 5000 might treat the link between the physical interface and the port channel

interface as a multidrop link when the mac address of members of a port channel is different from

the mac address of the port channel itself. This situation has been fixed in Cisco IOS Release 2.2a.

Workaround: Delete the members of the port channel and then add then add them back in.

• CSCdp58142

A Route Switch Processor (RSP) with an interface configured with IP Security (IPSec) crypto map

and the switching mode is Cisco Express Forwarding (CEF), the RSP might reload trying to decrypt

an IPSec packet. This situation is only seen when CEF switching is on. There is no workaround.

• CSCdp58947

If the service compress configuration is enabled, entering the show startup-config configuration

command or the show config configuration command will result in a memory leak. There is no

workaround.

• CSCdp60273

When performing tag imposition on a packet that must be fragmented, datagram_done will exhibit

a bad reference count error and a traceback message. There is no workaround.

• CSCdp62791

A Cisco 7200 series router that is running ATM LAN Emulation (LANE) with a PA-A3 port adapter

might reload if a packet with invalid encapsulation is sent to the port adapter. There is no

workaround.

• CSCdp66962

If you copy a file through SNMP using TFTP to a flash file system, when the space left on the flash

is less than the size of the file you will receive a ciscoFlashCopyStatus of copyOperationSuccess

message even though the file was not copied.

Workaround: Perform the same function through the command-line interface (CLI).