Specifications

6
Caveats for Cisco IOS Release 12.0
78-6455-12
EXEC and Configuration Parser
The complete advisory is available at
http://www.cisco.com/warp/public/707/ioshttpserverquery-pub.shtml.
• CSCds46280
TFTP will not transfer a file greater then 16 MB to or from a Cisco router.
Workaround: Use remote copy protocol (RCP) or File Transfer Protocol (FTP) to transfer the file.
• CSCds57060
Tracebacks appear when fair queueing is configured on an ATM interface. There is no workaround.
EXEC and Configuration Parser
• CSCds11268
Under certain circumstances, the CPU utilization for the process corresponding to the EXEC
session on a Cisco AS5300 series universal access server increases to more than 90 percent if a
dialup EXEC session pauses indefinitely. There is no workaround.
IBM Connectivity
• CSCdp19205
If you connect a Route Switch Module (RSM) to a PIX Firewall in a multiring environment and
configure the RSM using the multiring trcrf-vlan interface configuration command and the
multiring all interface configuration command, the RSM might lose the connection to the PIX
Firewall. In this situation, the RSM cannot ping the PIX Firewall. A sniffer trace reveals that the
RSM is sending the Address Resolution Protocol (ARP) request as a single route explorer and that
the PIX Firewall is answering with a directed frame. However, the control byte in the Routing
Information Field (RIF) of this directed response is set to 46 instead of 06 (where 6 is the length of
the RIF), and the RSM discards the packet.
Workaround: Configure the RSM by entering the multiring all all-routes interface configuration
command. This command will instruct the RSM to send the initial ARP request as an all-route
explorer, and the PIX Firewall will respond with a directed frame that has the control byte in the
RIF set to 06. The RSM will accept this frame.
• CSCdp20000
A Cisco router that is running Cisco IOS Release 11.2(15a) or Cisco IOS Release 11.2(15a)P may
reload with a bus error. There is no workaround.
• CSCdp94309
A Cisco Route Switch Processor (RSP) that is running Cisco IOS Release 12.0(9) may reload with
a bus error when you use the debug fras state EXEC command. A Cisco RSP may also reload if
debug commands are not enabled. There is no workaround.
• CSCdr55235
In some circumstances, Frame Relay access support (FRAS) fails to get connected. The output of
the show llc command shows that the Logical Link Control (LLC) session remains in
Asynchronous Disconnect Mode (ADM).
Workaround: Remove the failing FRAS connection from the configuration and then add it back in
to remove the LLC session.