Specifications

1137
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S2
Workaround: There is no workaround.
• CSCef78098
Symptoms: An Engine 1 or Engine 2 Gigabit Ethernet (GE) line card may stop switching traffic even
though the line protocol is up. Pings and routing do not work, and traffic does not go through.
Conditions: This symptom is observed a Cisco 12000 series after error recovery and when the
negotiation auto command is not configured for the interface of the GE line card.
Workaround: Enter the shutdown interface configuration command followed by the no shutdown
interface configuration command on the affected interface of the line card.
• CSCef80260
Symptoms: IP packets with an IP length that is smaller than 64 bytes and that have the More
Fragments (MF) flag set to 1 do not go through a Cisco 12000 series.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(27)S3 or Release 12.0(28)S1 and that is configured with a 2-port OC-48 DPT Engine
4+ ingress line card.
Workaround: There is no workaround.
• CSCef80349
Symptoms: An MPLS traffic engineering (TE) tunnel may not come back up after a link flaps.
Conditions: This symptom is observed when the headend of the TE tunnel is a third-party router that
has the no cspf command configured for the label switched path (LSP) and when the tunnel midpoint
is a Cisco router that runs Cisco IOS Release 12.0(25)S1. The symptom occurs when the link
downstream (that is, towards the tailend of the tunnel) on the Cisco router fails because the interface
on either side of the link is shut down.
In addition, note that the third-party router does not increment the LSP ID when it receives a
message, nor does it send a PathTear message in response to a PathErr message.
Possible Workaround: Use an explicit path on the third-party router but without the no cspf
command enabled.
• CSCef81555
Symptoms: The running configuration does not show the correct policing rate if the rate is
configured to be larger than 4,200,000,000 bps.
Conditions: This symptom is observed on a Cisco 12000 series that runs an interim release for
Cisco IOS Release 12.0(30)S.
Workaround: There is no workaround.
• CSCef82700
Symptoms: A 4-port Gigabit Ethernet (GE) line card generates TCAM errors when a large QoS
configuration is applied. The following messages are generated:
%QM-2-TCAM_ERROR: TCAM pgm error(8): ACL Merge Failed
%QM-4-SW_SWITCH: Interface GigabitEthernet2/0 routed traffic will be software
switched in egress direction(s)
In addition, when you modify the policy map while it is still attached to the interface of the 4-port
GE line card, the TCAM utilization goes up drastically; however, when you remove the policy map
from the interface, the TCAM utilization is not brought back to zero.
Conditions: These symptoms are observed on a Cisco 12000 series when a child policy map with 75
or more customers is applied and when each child policy has at least 6 queues.