Specifications

Caveats for Cisco IOS Release 12.0

78-6455-12

Resolved Caveats—Cisco IOS Release 12.0(6)

Timeout 04:00:00 Last input 00:00:09, output 00:01:45, output hang never Last clearing

of “show interface” counters 00:03:17 Queueing strategy: fifo Output queue 40/40, 42

drops; input queue 0/75, 0 drops

%PQUICC_ETHER-5-COLL: Unit 0, excessive collisions. Retry limit 15 exceeded

There is no workaround.

• CSCdm44772

If the show running-config or write terminal commands are issued at the same time from two

different virtual terminals (vtys), one session might finish before the other and damage a variable

that the first session needs to use. This can cause the router to reload.

Workaround: Do not issue the show running-config or write terminal commands at the same time

from two different vtys.

• CSCdm45096

A Cisco 1600 R router reloads with a bus error after you issue the show line 1 command. There is

no workaround.

• CSCdm45254

If per-user configuration commands are downloaded from a AAA server, a Cisco AS5800 access

server might reload or record spurious access errors.

Workaround: Disable the per-user configuration commands or disable AAA authorization.

• CSCdm45535

A Cisco 7500 series router can erroneously detect output stuck conditions. This condition causes

interfaces to reset or perform CBus restarts for no apparent reason, causing all IPs in the router to

reset. There is no workaround.

• CSCdm50432

If you configure a Cisco MC3810 multiservice access concentrator Multiflex E1 interface for ATM,

the interface might handle traffic-shaping parameters incorrectly. The generic cell rate algorithm

(GCRA) schedules cells too aggressively, leading to usage parameter control (UPC) drops on the

ATM switch even if double maximum burst size (MBS) values are provisioned. There is no

workaround.

• CSCdm51380

If more than one ipIcmpEcho probe is defined to begin at the same time, the responses can be mixed

because the ID field in the ICMP header for both packets defaults to 1.

Workaround: Change the ID field to a random number.

DECnet

• CSCdk23805

When DECnet accounting is implemented, a Cisco router might reload due to a large number of

connections. There is no workaround.