Specifications

1095
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S4
• CSCei31560
Symptoms: On a 6-port channelized T3 line card that has a multilink bundle configured, the delay
that occurs for traffic in a priority queue is about 12 to 14 milliseconds more than what you would
expect.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS Release 12.0S
that is configured with a multilink protocol such as MFR or MLP. These protocols and congestion
may cause excess delay for priority traffic.
Workaround: There is no workaround.
• CSCei33908
Symptoms: mVPN packets have corrupted encapsulation headers.
Conditions: This symptom is observed on a Cisco 12000 series that has a channelized ISE ingress
line card when packets are replicates to a VRF interface on the ingress line card, to a VRF interface
on another line card, and to a core interface on a third line card. This symptom occurs only after
some redundancy switchovers.
Workaround: Reload the line card.
• CSCei39383
Symptoms: Interface configuration parameters are not applied to the running configuration after an
RPR+ switchover.
Conditions: This symptom is observed intermittently on a Cisco 12000 series that is configured with
a 1-port CHOC-48 ISE line card but may also occur with other line cards.
Workaround: Apply the configuration manually to the affected interface.
• CSCei40506
Symptoms: Performance drops to 90 percent when the “N flag” is set incorrectly for the MDFS
process.
Conditions: This symptom is observed on a Cisco 12000 series that is configured for mVPN, that
uses an Engine 3 line card for imposition, and that uses an Engine 4+ line card for disposition.
Workaround: Reload the router.
• CSCei47377
Symptoms: On a 1-port channelized OC-12 ISE line card, the configuration of an interface that is
configured for MFR, MLP, and QoS may become lost during the switchover of an RP.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(28)S and that is configured with two RPs that have the redundancy mode set to RPR+.
Workaround: There is no workaround.
• CSCsa49906
Symptoms: When an attempt is made to remove a loopback from a T1 interface of a channelized T3
controller, the following warning message is generated and the loopback is not removed:
%Inband loopback is already running on T1 12. Only one code can be running per T3 at
a time
Conditions: The symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(27)S2 and that is configured with a 6-port channelized T3 line card.
Workaround: There is no workaround.