Specifications

12
Caveats for Cisco IOS Release 12.0
78-6455-12
Miscellaneous
• CSCdk18888
A VIP Token Ring interface does not encrypt or decrypt IP packets containing a Routing
Information Field (RIF), even though the initial encryption connection setup with the remote router
is successful. Encryption and decryption for Token Ring IP packets without a RIF continue to
function normally. There is no workaround.
• CSCdm01831
A timing problem exists that is specific to the Route Switch Module (RSM). If an interface MAC
address changes, the code may not perform all of the bring-up functions, such as enabling IPX
routing on the interface. In this case, issuing the show ipx route user command in EXEC mode
shows that the problem VLAN network is not in the routing table.
Workaround: Go to the interface and deconfigure the IPX network, and then reconfigure the IPX
network.
• CSCdm81058
A Cisco 3640 router may reload with a bus error at PC 0x603DFF38, address 0xAC, and stack
decode show the following:
[fcp_transmit_on_mgmt_idbs [fcp_transmit_shm_msg [fcp_reenable_learning
[fcp_process_sh_ack_msg [fcp_input [fcp_process [r4k_process_dispatch
[r4k_process_dispatch
There is no workaround.
• CSCdm87751
If integrated routing and bridging (IRB) is being used between an Ethernet Interface and a Token
Ring Interface, the Bridge Group Virtual Interface (BVI) may not respond to any IP frames
originating on the Token Ring. This condition occurs if the BVI is sharing the MAC layer address
of the Token Ring interface.
Workaround: Change the MAC layer address of the BVI to a different LAN interface that is
participating within the same bridge group. Enter the mac-address interface configuration
command on the BVI interface, or reload the router, which will use the first active LAN interface
within the bridge group.
• CSCdp03254
Cisco routers running IP Security (IPSec) may reload if certificates are enrolled with a fully
qualified domain name (FQDN) identity that has no IP address or router serial number. The FQDN
of the router is changed, and certificates are reenrolled with the new FQDN identity (no IP address
or router serial number).
Workaround: Include the IP address and the router serial number in the second enrollment request.
• CSCdp05975
On a Cisco LightStream 1010 that is running Cisco IOS Release 11.3 or Cisco IOS Release 12.0,
virtual circuit (VC) merge does not work properly. Several cyclic redundancy check (CRC) errors
appear when VC merge is active and traffic is present. There is no workaround.
• CSCdp55089
Cisco 2600/3600 series routers may get a spurious access error while using the no form of the smds
dxi interface configuration command. There is no workaround.
• CSCdp86385
A Cisco RSP4 Route Switch Processor (RSP) that is running Cisco IOS Release 12.0(9) may reload
when you reboot. There is no workaround.