Specifications

155
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(2)
It is most easily seen by issuing the command show proc mem, and watching the growth of the
“Holding” memory by the “IPX SAP In” process:
PID TTY Allocated Freed Holding Getbufs Retbufs Process
44 0 14265416 201472 8360984 21924 0 IPX SAP In
Also, memory is being allocated to large number of IPX SAP PH, IPX NDB PH, and IPX USV
processes, as shown by the command show memory summary.
Workaround: Remove IPX SAP incremental by issuing the command no ipx sap-incremental
eigrp from the IPX interfaces.
Protocol Translation
• CSCdk51046
A Cisco router running Cisco IOS Releases 11.3 or 12.0 might fail with bus error if the X.25
interface is congested and the PAD Virtual Circuit (VC) is cleared.
• CSCdk51892
When using VTY-async interfaces, a new connection might be closed immediately after being
accepted on the VTY.
TCP/IP Host-Mode Services
• CSCdk45442
Issuing the command privilege exec level level debug ip tcp packet causes the router to fail if the
commands show running-config or write terminal are issued.
Wide-Area Networking
• CSCdj35436
A VIPs CPU load might go to 99% after an online insertion/removal (OIR) event. Only a system
reload or microcode reload clears the problem.
• CSCdk26814
Conditions under which the problem occurs: Any event that generates a media_hw_reset() such as
changing an MTU size or clearing the ATM interface
Signalling or ATM SVC applications such as LANE or static map refuse to create an SVC because
they think it still exists. Clearing the ATM interface does not fix the problem.
Workaround: Issue the commands shutdown followed by no shutdown, to clear all the state
information at the signalling layer of the interface.
• CSCdk27818
Voice over IP calls cause the router to reload if PPP Multilink is enabled on the BRI interface.
Workaround: Force a UDP checksum on the dial peer, or remove the PPP Multilink.
• CSCdk28918
MS Callback server functionality in Cisco access servers is not working with configurations
involving async/ISDN interfaces configured with dialer profiles.