Specifications

1189
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S1
• CSCef42849
Symptoms: Timing violation occurs in the PRE2/PRE1 temperature sensor routine. Since the
temperature sensor routines violate timing requirements, the temperature reading fails in new device
from a new vendor.
Conditions: The failure occurs only in new temperature sensor from new vendor. All old type of
sensors are not effected.
Workaround: There is no workaround.
• CSCef44154
Symptoms: When an MPLS packet that enters through an SRP or Ethernet interface contains an
L2TP or UTI packet and this MPLS packet is processed by the RP instead of the PXF engine (for
example, when the IP header in the MPLS packet contain options and the MPLS TTL equals 0 or 1),
the SRP or Ethernet interface stops receiving packets.
Conditions: This symptom is observed on a Cisco 10720 that runs Cisco IOS Release 12.0S.
Workaround: There is no workaround.
• CSCef44274
Symptoms: The per-WRED-class drop counters are not incremented under show queueing output
even though the aggregate WRED drops are non-zero.
Conditions: The symptom is specific to the legacy random-detect command enabled under the main
interface.
Workaround: Attach a policy-map to the interface with random-detect enabled.
• CSCef48573
Symptoms: An Engine 3 Quad OC-12 line card that is configured with multicast VPNs may punt
traffic to the Route Processor (RP).
Conditions: This symptom is observed on a Cisco 12000 series that runs the gsr-p-mz image of a
Cisco IOS interim release for Release 12.0(30)S. Note, however, that this caveat is resolved in
Release 12.0(30)S.
Workaround: There is no workaround.
• CSCef52419
Symptoms: In Cisco IOS software versions prior to Cisco IOS Release 12.0(27)S3,
Release 12.0(28)S1, and Release 12.0(30)S, the Cisco 10720 router CPU utilization is high
(x%/y%), where y is greater than 60%, and is reporting continuous BGP and LDP flapping. The
show interface counters are showing a large number of drops and the show buffers command shows
a large number of cache misses for the private IBC buffer pools.
Conditions: The Cisco 10720 router is in a broadcast ARP storm environment and the interface
holdq <queue length> in queue length is not the default of 75 packets for any one of the router's
interfaces (for example, it is 2048).
Workaround: Revert the holdq <queue length> in and holdq <queue length> out to the default
setting by using the default holdq in and default holdq out commands on all interfaces with
non-default hold queues.
• CSCef53085
Symptoms: The rates that are specified in MQC wrongly include the L1 overhead. For example, if
you configure the bandwidth 100 command, 100 Kbps of L3 + L1 is guaranteed, excluding the L2
overhead. The throughput of L3 is therefore less than 100 kbps. (Note that the L2 overhead is not
supposed to be included.)