Specifications

65
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(8)
• CSCdk43155
After upgrading to Cisco IOS Release 11.3, you might occasionally experience the following error
message:
%X25-3-X25INT: Interface ?, X.25 internal error Invalid lock operation on an X.25 route
-Process= “X.25 Background”, ipl= 2, pid= 69
Workaround: Remove the route entry associated with the destination from the X.25 routing table,
and then add it back again.
• CSCdm02785
Entering the x25 map cmns global configuration command causes a Cisco 2600 series router
running Cisco IOS Release 11.3 to reload with a SegV exception.
Workaround: Use the equivalent x25 route global configuration command.
• CSCdp36081
A Cisco 3640 router that is running Cisco IOS Release 12.0(7), might experience memory
corruption and not be able to access core files. There is no workaround.
• CSCdm37706
When standby time arrives on a BRI that is used for backup of a serial interface, a disconnect on
q931 is never sent. The ISDN switch needs to declare remote terminal equipment out of order.
There is no workaround.
• CSCdm45948
An RSP4 and a Cisco 7500 series router that are running Cisco IOS Release 12.0(4a) might reload
at “set_if_input.”
Workaround: Disable Cisco Express Forwarding (CEF).
• CSCdm46165
A Cisco router might display a “%TCP-2-INVALIDTCPENCAPS” message, but the system does
not lock. There is no workaround.
• CSCdm66787
The Link Access Procedure, Balanced (LAPB) module will retransmit any outstanding
unacknowledged frames when the remote device reports “Receiver Ready” after previously
reporting “Receiver Not Ready.” If the T1 timer has not expired while the remote device was not
ready, the outstanding unacknowledged frames should still be considered outstanding, and the
LAPB should not retransmit them. There is no workaround.
• CSCdm67523
A Cisco 7507 router with an ATM Interface Processor (AIP) installed might reload with the
following error and not come back up unless the AIP is removed:
%DBUS-3-CXBUSERR: Slot 1, CBus Error
%RSP-3-ERROR: CyBus0 error 10
%RSP-3-ERROR: command/address mismatch
%RSP-3-ERROR: bus command write 4bytes (0xE)
%RSP-3-ERROR: address offset (bits 3:1) 4
%RSP-3-ERROR: virtual address (bits 23:17) 000000
There is no workaround.
• CSCdm79305
A Protocol Translation that is configured with Virtual Async and is running over an X.25
connection might not transmit a full packet when the X.25 output maximum packet size is set to
512 bytes and above. There is no workaround.