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Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(32)S3
Conditions: This symptom is observed when PMTUD is enabled over parallel links with different
MTUs and when the paths in each direction use different links. Some other conditions may also
apply, such as CEF and load-balancing being enabled.
Workaround: Enter the ip tcp mss command to configure the MSS to be less than the MTUs of all
possible egress interfaces, or configure the MTUs of all possible egress interfaces to be same as the
MSS.
• CSCek12203
Symptoms: When you enter the copy ftp disk command, the copy operation may fail and cannot be
terminated, further copy commands may fail, and a TCP vty session for the purpose of
troubleshooting the situation may fail and cannot be terminated.
Conditions: These symptoms are observed on a Cisco platform when the FIN flag is set in the initial
ESTAB message from a neighbor. You must reload the router to recover from the symptoms.
Workaround: Do not enter the copy ftp disk command. Rather, enter the copy tftp disk command.
Wide-Area Networking
• CSCse75229
Symptoms: Frame Relay LMI crashes due to Address Error (load or instruction fetch) exception.
Conditions: The crash may occur when a Cisco type LMI packet is received which contains an
invalid DLCI value.
Workaround: Use q933a or ANSI type LMI.
• CSCse81327
Symptoms: On a Cisco router when a main interface is configured for frame-relay encapsulation
with sub-interfaces, when a sub-interface is deleted and re-added, the DLCI information is not
re-added to the running configuration and no error message is sent to the CLI to indicate an error.
Conditions: This only occurs if the main interface is shut down. If the main interface is
administratively up, this does not occur in our testing. This symptom was introduced between
Cisco IOS Release12.0(30)S and Release 12.0(31)S.
Workaround: Do not provision and rollback sub-interfaces on main interfaces that are shut down.
This may not be possible without re-writing customer automated provisioning systems.
Resolved Caveats—Cisco IOS Release 12.0(32)S3
Cisco IOS Release 12.0(32)S3 is a rebuild of Cisco IOS Release 12.0(32)S. The caveats listed in this
section are resolved in Cisco IOS Release 12.0(32)S3 but may be open in previous Cisco IOS releases.
This section describes only severity 1, severity 2, and select severity 3 caveats.
Basic System Services
• CSCeg11566
Symptoms: Intensive SNMP polling may cause the I/O memory of a router to be depleted.
Conditions: This symptom is observed in rare situations.
Workaround: Reduce the SNMP polling interval, frequency, or rate.
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