Specifications

Caveats for Cisco IOS Release 12.0

78-6455-12

Open Caveats—Cisco IOS Release 12.0(14)

This section describes possibly unexpected behavior by Cisco IOS Release 12.0(14). All the caveats

listed in this section are open in Cisco IOS Release 12.0(14). This section describes severity 1 and

2 caveats and select severity 3 caveats.

AppleTalk

• CSCds04435

A Cisco 3640 router running Cisco IOS Release 12.0(12) reloads in atroute_GetValidEqualPath

when enabling switched virtual circuits (SVCs). There is no workaround.

Basic System Services

• CSCdj14601

When hardware compression is enabled, packets are normally fast-switched. If you disable fast

switching and then enable fast switching again, fast switching remains disabled.

Workaround: Reconfigure hardware compression by entering the no compression command

followed by the compression stac command.

• CSCdm36098

On a Versatile Interface Processor (VIP) with PA-4T+ port adapter and compression service adapter

(CSA) that are configured with distributed weighted fair queueing (dWFQ), a severe performance

degradation will occur that you can diagnose by the numerous packet drops. This situation occurs

when the interface is under heavy traffic.

Workaround: Always enable the CSA first, and then enable dWFQ.

• CSCdm69245

A Cisco router may reload because of a timer corruption. There is no workaround.

• CSCdm71775

If you issue the write erase command which erases the configuration in NVRAM, the boot

variables are not changed.

Workaround: Change the boot configuration and configuration register, and then save the

configuration before erasing NVRAM.

Release Notes for the Cisco AS5300 for

Cisco IOS Release 12.0

Release 12.0(14) November 6, 2000

Release Notes for the Cisco AS5800 for

Cisco IOS Release 12.0

Release 12.0(1) October 26, 1998

Release Notes for Cisco uBR7200 Series

for Cisco IOS Release 12.0

Release 12.0(3) February 8, 1999

Release Notes Cisco IOS Release Revision Date