Specifications

117
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(4)
• CSCdk88225
An RSP might reload by software forced error when you use one the no mls rp ip or
no interface FastEthernet commands. There is no workaround.
• CSCdk89651
You might not be able to make two consecutive asynchronous calls from a Cisco AS5300 access
server that runs Cisco IOS Release 11.3(7)T. The problem occurs whenever NFAS is configured.
The problem goes away when NFAS is removed. With NFAS configured and only one controller
up, there is no problem dialing out. There is no workaround.
• CSCdk89833
After a reload, ATM PVCs disappear from the running configuration.
Workaround: Configure PVCs after the reload.
• CSCdk89721
The show isdn history command does not show any information. There is no workaround.
• CSCdk90213
When a Cisco router tries to get a Certificate Revocation List (CRL) from the public key
infrastructure (PKI) as part of Internet Key Exchange (IKE) setup, the router reloads. This happens
just after the CRL has been requested. There is no workaround.
• CSCdk92381
TCP/IP traffic that is routed between a TR-ISL subinterface and an Ethernet ISL subinterface might
not be fragmented correctly.
Workaround: Keep the TR-ISL subinterface MTU to 1500, or move the TR-ISL subinterfaces to
another hardware interface.
• CSCdk93443
With distributed CEF, the clear cef linecard command can sometime cause CEF to be disabled on
some slots.
Workaround: A microcode reload of the slot will reenable CEF.
• CSCdm00582
The PA-A3 RX port adapter will stall after a reload.
Workaround: Issue the clear interface command.
• CSCdm03143
Configuring a Fast Ethernet interface for full duplex does not take the device to full-duplex mode.
Also, late collisions are observed. The fix for a previous caveat (CSCdk81069) modified the amdfe
driver to logically “or” the existing contents of the PHY control register with the duplex settings.
As the autonegotiation enable bit in the control register is set (as the device was autonegotiating
before the duplex change), the duplex settings do not take effect. If the device was previously in
half duplex, it continues to be in half duplex.
Workaround: To manually configure speed/duplex on the PHY, autonegotiation needs to be
disabled.
• CSCdm05324
A Cisco router converts a requested TFTP filename request to lower case during an SNMP
netConfigSet. If the configuration filename is mixed or uppercase in the tftpboot directory, the file
will not be found on a UNIX-based TFTP server.
Workaround: Use an all-lowercase filename.