Specifications

Caveats for Cisco IOS Release 12.0

78-6455-12

Resolved Caveats—Cisco IOS Release 12.0(5)

• CSCdm10184

A Cisco router might send an information frame with the poll bit set and then send a relative rate

(RR) with the poll bit set. This causes the end station to send a window of information frames twice.

There is no workaround.

• CSCdm12293

In Cisco IOS Release 12.0(3.5), Release 11.3(8.5), and Release 11.3(9), features that use SDLC do

not work. There is no workaround.

• CSCdm13939

If you use a combination of DLSw with Ethernet 80d5 frame processing and Cisco IOS

Release 11.3, DLSw will not forward response Logical Link Control (LLC) protocol data units

(PDUs).

Workaround: Hardcode all the service access points (SAPs) with the source-bridge sap-80d5

command.

• CSCdm14582

A router running Advanced Peer-to-Peer Networking (APPN) might reload with a SegV exception.

The following stacktrace is created:

0x606C30CC:process_purged_ips(0x606c3060)+0x6c 0x606C3024:hsp04(0x606c2dd0)+0x254

0x606C2DAC:hsp00(0x606c2d80)+0x2c

There is no workaround.

• CSCdm14583

If a Berkeley Internet Name Domain (BIND) arrives at a Cisco network node/DLUR, and is

destined for a secondary logical unit (SLU) beneath that DLUR, and the primary logical unit (PLU)

name is not qualified, you reject the BIND with sense code 0x0835001B. The “1B” is the offset

into the BIND of the PLU name field. There is no workaround.

• CSCdm19563

If you use data-link switching (DLSw) or Qualified Logical Link Control (QLLC) with PVC

configured, when you upgrade to Cisco IOS Release 11.3(8), the VMAC generated by QLLC is set

to 0000.0000.0000. In the lab environment the circuit connected properly, but this might not be the

case if an access list is implemented.

Workaround: Use the latest release of Cisco IOS Release 11.2.

• CSCdm20764

An Advanced Peer-to-Peer Networking (APPN) router might create a topology storm over the

status of a Branch (Extender) transmission group (TG). The router’s Branch Awareness function

(APPN option set 1120) is inadequate. There is no workaround.

• CSCdm21529

The Channel Port Adapter (CPA) does not recover from a fatal error reload. This requires the user

to manually reload the microcode for this card. If the user enters the show running-config or write

terminal commands while in this mode, the console will lock up and display the

“SCHED-3-THRASHING” error message.

Workaround: If the card does not restart after a CPA fatal error, issue a

microcode reload [ecpa | pcpa] slot n command to reload the microcode for the problematic card.

If you get the “SCHED-3-THRASHING” error message, Telnet to the router on a different vty and

perform the microcode reload there.