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1010
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(30)S
CSCef52974
Symptoms: An Engine 3 ingress line card crashes continuously with alpha errors and IPC errors
when it processes ingress multicast traffic.
Conditions: This symptom is observed on a Cisco 12000 series when you reload an Engine 3 ingress
line card that has 5000 (S,G) entries.
Workaround: There is no workaround.
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.)
Conditions: The symptom is observed in Cisco IOS Release 12.0(28)S and earlier releases.
Workaround: There is no workaround.
CSCef53109
Symptoms: When you enter the do command with arguments on an interface member of a
port-channel or pos-channel group, a message similar to the following one is displayed:
Command “do <arguments>” not allowed on link-bundle member interface
<interface-number>
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(28)S when the command is entered on an interface member of a port-channel or
pos-channel group.
Workaround: Enter the command directly on the interface that you are querying.
CSCef53169
Symptoms: An outbound ACL with a log/log-input keyword changes the IP destination address in
the packets. As the result, packets that should be permitted are incorrectly denied.
Conditions: This symptom is observed on a Cisco platform that runs Cisco IOS Release 12.0(29)S
when the incoming interface for the packets is a tag-switching interface. The symptom is observed
irrespective of whether the interface with this outbound ACL is a tag-switching interface or not.
Workaround: Do not use the log/log-input keyword in the ACL.
CSCef53475
Symptoms: Packet drops occur when traffic is sent below the shape rate that is defined in a service
policy.
Conditions: This symptom is observed on a Frame Relay interface when there are multiple DLCIs
that have service policies enabled. Each DLCI has a hierarchical policy with a shape rate in the class
default at the parent level and a child policy with LLQ and CBWFQ classes. When traffic to each
DLCI is just below the shape rate and the combined traffic through the interface is close to line rate,
packet drops occur on some DLCIs. The symptom does not occur when traffic is sent to one DLCI
at the time.
Workaround: Increase the shape rate to compensate for the scheduling inaccuracy.
CSCef53570
Symptoms: When IPv4 multicast is configured on an interface and when hardware forwarding is
enabled, the interface stops forwarding all unicast and multicast traffic.
Conditions: This symptom is observed only on Cisco 12000 series Engine 2 line cards.
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