Specifications

55
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(9)
• CSCdp60101
When configured to provide access control, the Kerberos client on Cisco products will fail all
authentications when the expiration of the credential falls between January and February of a leap
year.
Workaround: Choose an alternate form of authentication such as Terminal Access Controller
Access Control System Plus (TACACS+) or Remote Dial-In User Service (RADIUS).
Wide-Area Networking
• CSCdk39903
After you enter the show vpdn history failure EXEC command, the console might lock up, and
the CPU utilization might rise to 100 percent. This condition is most likely to occur if the history
log has wrapped. There is no workaround.
• CSCdm59025
After startup, a PPP interface might have an incorrect High-Level Data Link Control (HDLC)
encapsulation string of 8F000800 instead of the correct FF030021 string.
Workaround: Enter the clear adjacency EXEC command, or enter the shutdown interface
configuration command followed by the no shutdown interface configuration command on the
affected interface.
• CSCdm91461
If you are using a Cisco 3640 router running Cisco IOS Release 12.0(5.3) and poll
CISCO-CALL-HISTORY-MIB objects to track calls, you might see incorrect information returned
for the object ciscoCallHistoryDestinationAddress. The same IP address repeats multiple times
even though the corresponding ciscoCallHistoryDestinationHostName is always unique for the
same instance. This bug has been fixed in Cisco IOS Release 12.0(08.00.02)T.
• CSCdp14536
Under rare conditions, a Multiprotocol over ATM client/Multiprotocol over ATM server
(MPC/MPS) will receive a route change from the Next Hop Resolution Protocol (NHRP) side of
the cloud but will not purge the affected cache entry. There is no workaround.
• CSCdp18492
A Cisco router might experience a software-forced reload because of watchdog timeout if
thousands of switched virtual circuits (SVCs) or LAN Emulation (LANE) clients are configured on
a single ATM interface.
Workaround: Reduce the number of SVCs or LANE clients that are configured on the ATM
interface.
• CSCdp21451
A console buffer overrun might occur on a Cisco 1600 series router, a Cisco 3800 series router, a
Cisco 800 series router, or a Motorola SMC (MPC860)-based platform if you initiate a PAD or X.28
outgoing connection from the console terminal. This problem does not occur if you make a PAD or
X.28 connection from the vty lines.
Workaround: Exit the console session, and then restart the console session.