Specifications

114
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(4)
ISO CLNS
• CSCdk00465
If you convert from DECnet phase IV to DECnet phase V with multiple paths, you might
experience routing loops.
Workaround: Configure equal metrics for all paths.
Miscellaneous
• CSCdj22429
Under rare circumstances, the Cisco AS5200 access server might issue the following message:
%SYS-3-BADMAGIC: Corrupt block at 20000000 (magic xxxxxxxx)
The Cisco AS5200 crashes with a software forced error. There is no workaround.
• CSCdk32594
Initializing a BRI that is connected to a Siemens HICOM PABX fails, leaving the Layer 1 Status
in ACTIVE_ErrorInd.
Workaround: Disable Cisco Discovery Protocol (CDP) on the interface.
• CSCdk58181
Packets are decrypted when received from an input interface, and then encrypted again before being
forwarded to the output interface. There is no workaround.
• CSCdk60886
After you place a fax call to the Public Switched Telephone Network (PSTN) from a remote Foreign
Exchange Office interface (FXO) port using connection trunk, the call never disconnects properly.
You must issue the shut command followed by the no shut command to bring the port back into
operation.
Workaround: Use the private line auto ringdown (PLAR) connection, or nothing at all.
• CSCdk65092
When you use the RSP platform with ESA installed, crypto sessions might stop encrypting data,
but the access lists continue to see matches. A show crypto engine connections slot command
shows the interface as “???” instead of the physical interface through which the packets should be
going. The symptom is that although the crypto session appears to be up according to the
sh crypto conn command, you are unable to send any data to the other side if it is to be encrypted
according to the crypto map.
Workaround: Remove the crypto map from the interface and then remove the corresponding
sequence number from the crypto map. Re-create the sequence into the map (using the same
configuration commands) and apply it back to the interface.
• CSCdk65594
In certain configurations, CEF drops every other outgoing packet on an ATM interface. The
problem occurs with RFC 1577 SVCs, and with RFC 1483 PVCs that use Inverse ARP.
Workaround: Disable CEF on the affected ATM interface with the no ip route-cache cef command.