Specifications

152
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(2)
• CSCdk50099
Packets larger than 1010 bytes fail to be transmitted on the BRI interface of a Cisco 7200 series
router when WFQ is enabled (default queuing).
Workaround: Enable FIFO queuing on the interface.
• CSCdk50394
If an Ethernet or FDDI interface goes down for any reason other than administrative shutdown (for
example, a cable is pulled), when the interface comes up, CEF adjacencies that existed before the
down event do not come up. This results in dropping packets.
Workaround: Clear the ARP table.
• CSCdk51089
The router might reload when using the default state-table or no state-table commands. There is
no workaround, besides avoiding using these commands. Also, confirm the existence of a particular
state-table before deleting it.
• CSCdk51554
Router displays an error message:
42-1-NO_RING_DESCRIPTORS: No more ring descriptors available on 3 slot.
Afterwards, ports on the VPM are no longer usable.
• CSCdk51931
When trying to configure a multipoint ATM-DXI interface, the router only allows one atm-dxi map
statement per VPI. For instance, if two ATM-DXI PVCs are defined on a multipoint interface
(VPI/VCI 0/50 and 0/51), the router only allows one atm-dxi map command for VPI 0. The error
message “Address already in map” appears when the second map command is entered.
• CSCdk53083
Packets coming in on a tunnel interface from a Token Ring interface on a Cisco 2500 or 4000
platform are duplicated.
Workaround: Disable fast switching on outgoing interface of unencapsulated packet.
• CSCdk53597
Online insertion/removal (OIR) of a linecard caused the router to fail.
• CSCdk54004
HSRP uses an incorrect MAC address to refresh the CAM on a switch or the MAC cache on a
learning bridge. This can lead to loss of connectivity or possibly duplicate packets.
• CSCdk54291
A router running lots of subinterfaces and distributed-CEF, might experience memory
fragmentation problems due to excessive fibidb/fibhwidb download to linecards.
• CSCdk54652
Connected host prefixes could remain in the linecard as invalid entries even when the interface is
shutdown. This could happen if the interface down event was preceded by a full CEF download.
Workaround: Issue the clear cef linecard command.