Specifications

Caveats for Cisco IOS Release 12.0

78-6455-12

Resolved Caveats—Cisco IOS Release 12.0(10)

All the caveats listed in this section are resolved in Cisco IOS Release 12.0(10). This section describes

severity 1 and 2 caveats and select severity 3 caveats.

Basic System Services

• CSCdm81049

If a serial interface is frequently flapping, the router might pause indefinitely with a stack trace

indicating that it is in usecdelay() as a result of cbus_mci_serial_reset() being called while at

interrupt level. This situation rarely occurs.

Workaround: Enter the shutdown interface configuration command on the serial interface that is

flapping.

• CSCdp28929

A Cisco router or access server might reload when a reference is made to a teletype (TTY)/Telnet

session that has been externally ended. There is no workaround.

• CSCdp32242

A Cisco 7200 series router that is running PPP stack hardware compression with a compression

service adapter (CSA) might reload because of a memory leak. This situation occurs when a

PA-MC-T1 port adapter is used. It can also occur when a multichannel E3 PA port adapter is used.

Workaround: If the CPU can handle the load, enter the compress {predictor | stac [csa slot |

software]} interface configuration command.

• CSCdp53468

You might not be able to change the size of priority queues in priority queueing with virtual

template interfaces on a Cisco 3640 router that is running Cisco IOS Release 12.0(8) or Cisco IOS

Release 12.0(7). There is no workaround.

• CSCdp57305

A Cisco 7200 series router that is running Cisco IOS Release 12.0(7) might reload because of a bus

error or pause indefinitely when FRF.9 payload compression is enabled with a hardware

compression adapter and Frame Relay Traffic Shaping has already been configured on the serial

interface.

Workaround: Use FRF.9 software compression.

• CSCdp60260

A Cisco router might reload when hardware compression is configured in conjunction with Generic

Traffic Shaping and Fancy Queueing on a compression service adapter (CSA) at the main interface.

This situation only occurs when all 3 features are configured.

Workaround: Use software compression.

• CSCdp67197

A Cisco 2610 router that is running Cisco IOS Release 11.3(6)T might experience leaking memory

because of IP Simple Network Management Protocol (SNMP). There is no workaround.