Specifications

1175
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S1
Conditions: This symptom is observed on a Cisco 12016 that runs Cisco IOS Software 12.0(25)S2
when you enter the hw-module slot 17 shutdown command to shut down the master scheduler card.
Workaround: Do not shut down the master scheduler card.
• CSCee55457
Symptoms: When a channel group (for example, channel +1) is removed from a controller, the
class-default queue gets stuck on the next time slot/channel.
Conditions: This symptom is observed on a Cisco 10000 series that is configured with 24-port
channelized E1/T1 line cards and that has a high traffic rate on the removed channel.
Workaround: Enter the shutdown interface configuration command followed by the no shutdown
interface configuration command.
• CSCee56199
Symptoms: An egress IPv6 QoS policy does not work after a Cisco 12000 series reboots.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS Release 12.0 S
when the following conditions are met:
– An IPv6 ACL is used to match traffic.
– UDP ACEs are used in the IPv6 ACL.
– Matching UDP traffic is sent.
Note that matching TCP traffic works fine.
Workaround: There is no workaround.
• CSCee56225
Symptoms: A Cisco router may experience alignment errors involving MPLS and BGP, and the
output of the show alignment command may show the following information:
Total Spurious Accesses 1, Recorded 1
Address Count Traceback
C 1 0x612EE93C 0x60BD2894 0x60BD2F0C 0x60B8C2DC
Conditions: This symptom is observed on a Cisco router that is configured for MPLS and BGP.
Workaround: There is no workaround. However, note that the symptoms are of a transient nature and
do not affect the functionality of the router.
• CSCee57438
Symptoms: The second port pair (interface SRP x/1) of an Engine 4+ 4-port OC-48 DPT line card
is unable to forward traffic (including pings) at layer 3. The first port is also damaged (interface SRP
x/0); a portion of its forwarding capabilities is damaged. The layer 2 SRP protocol operates
correctly.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(27)S1 and does not require any specific trigger: the symptom is always there.
Workaround: There is no workaround.
• CSCee57485
Symptoms: There are two symptoms:
– Packets with explicit null labels may be dropped from an Engine 4+ POS line card.
– CEF may become disabled on an Engine 4+ POS line card.
Conditions: These symptoms are observed on a Cisco 12000 series under the following conditions: