Specifications

1219
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S
Conditions: When a VC is created, if the VC goes down or is inactive during the first 60 secs, the
flowbit information may not be updated correctly on the line card.
Workaround: Create another VC. This will cause IOS to go through all of the active VCs and update
all their flowbit information.
• CSCed25921
Symptoms: Traffic loss and tracebacks may occur on an Engine 2 (E2) 4xOC12 line card when
diagnostics are run on the backup clock scheduler card (CSC).
Conditions: This symptom is observed on a Cisco 12012 router when the backup CSC is in slot 17
of the router.
Workaround: There is no workaround.
• CSCed26242
Symptoms: An Engine 3 QOC12 LC configured with multicast VPNs may drop or punt traffic to the
RP. This may happen when the mdt data group-address-range wildcard-bits threshold
threshold-value command is configured in VRF configuration mode.
Conditions: This symptom is observed on a Cisco 12000 series.
Workaround: Remove the mdt data group-address-range wildcard-bits threshold threshold-value
command from the VRF configuration.
• CSCed26664
Symptoms: The output packet counters on an interface may be incorrect. Depending on the
Cisco IOS release, they may show either a very large or unexpected value.
Conditions: The output packet counters get corrupted by clearing the interface counters followed by
reloading the PXF microcode. The commands are the clear counters command followed by the
microcode reload pxf command.
Workaround: Issue another clear counters command.
• CSCed28122
Symptoms: An ATM interface configuration may become corrupted.
Conditions: This problem may be encountered when ATM subinterfaces are deleted and
subsequently reenabled or when an interface is unplugged and then reinserted.
Workaround: There is no workaround.
• CSCed28565
Symptoms: OAM cells are not sent when you configure the oam-pvc manage command on a PVC.
Conditions: This symptom is seen on a 4 port OC-3 ATM ISE line card when distributed OAM is
enabled (which is the default mode of operation).
Workaround: Disable distributed OAM by entering the no atm oam distributed interface
configuration command.
• CSCed28604
Symptoms: Enabling autonegotiation on an E1 Gigabit Ethernet interface causes the standby route
processor (RP) to fail.
Conditions: This symptom is observed on a Cisco 12000 series router that is running Cisco IOS
Release 12.0(26)S.
Workaround: Stop the traffic, enter the shutdown command on the interface, configure
autonegotiation on the interface, enter the no shutdown command on the interface, and resume the
traffic.