Specifications

1317
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S3
Workaround: The potential workarounds include the following:
– Reduce the number of QoS policy attachments.
– Avoid polling the unsupported stats table(s).
– Reduce the polling frequency.
• CSCee90590
Symptoms: A 6-port OC-3 POS line card (ESR-6OC-3/P-SMI=) may go down unexpectedly, and
the following error messages may be logged (assuming that the line card is installed in slot 6 of the
router):
IPCOIR-4-REPEATMSG: IPC handle already exists for 6/0
IPCOIR-2-CARD_UP_DOWN: Card in slot 6/0 is down. Notifying 6oc3pos-1 driver.
C10K_ALARM-6-INFO: ASSERT CRITICAL slot 6 Card Stopped Responding OIR Alarm -
subslot 0
Conditions: This symptom is observed on a Cisco 10000 series that runs Cisco IOS
Release 12.0(27)S2 in a dual-PRE configuration when the CPU utilization on the active PRE is high.
The symptom may also occur in other 12.0 S releases.
Workaround: There is no workaround.
• CSCee90893
Symptoms: An RP may crash if a policy map matches a QoS group value that is greater than seven.
Conditions: This symptom is observed on an interface of a Cisco 12000 series Engine 4+ line card
when the interface is configured for shaping.
Workaround: Use a QoS group value in the range of one through seven in the policy map.
• CSCee93228
Symptoms: Under certain unknown circumstances, a traceroute may trigger a process watchdog.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(26)S2. However, the problem is not specific to a Cisco 12000 series or to Cisco IOS
Release 12.0S and may occur on other platforms and in Release 12.2T and Release 12.3.
Workaround; There is no workaround.
• CSCef01537
Symptoms: A VIP may reload because of a bus error when a corrupted FIBIDB is used unchecked
by the router.
Conditions: This symptom is observed rarely on a Cisco 7500 series when MQC is configured.
Workaround: Disable the MQC configuration.
• CSCef01689
Symptoms: Transient errors may be generated when you boot a 1-port channelized OC-48/STM-16
(DS3/E3, OC-3c/STM-1c, OC-12c/STM-4c) POS/SDH ISE line card. The errors disappear after
some time.
Conditions: This symptom is observed on a Cisco 12000 series when you boot the card line card by
reloading either the router or the line card itself. The symptom occurs only when the peer router
sends RIPv1 packets.
Workaround: There is no workaround.
• CSCef03176
Symptoms: A ping between two GRE interfaces may not work.