Specifications

1308
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S3
• CSCee31618
Symptoms: Buffer leakage could occur when a high load of traffic is sent to an interface that has a
service policy enabled. This could result in ping failures or very long packet delay.
Conditions: The problem is observed with an MC-T3+ interface that is configured in unchannelized
mode, and the traffic consists only of small packets such a 64-byte packets.
Workaround: Manually configure the tx-ring-limit command to lower the number of packets that
can be placed on the transmission ring.
• CSCee32208
Symptoms: After a circuit bounces, traffic stops being passed on a VC when using a VC bundle.
Other VCs on the same subinterface still work. The switch on the other side of the VC does not show
any received cells from the VC.
In addition, the show atm vc command does not work because even after the VC is recovered, the
command output still does not show any traffic.
Conditions: These symptoms are observed on a Cisco 12000 series.
Workaround: Enter the shutdown command followed by the no shutdown command on the affected
subinterface.
• CSCee32484
Symptoms: After performing a manual switchover on a dual-RP router that functions in RPR+ or
SSO mode, the following error message may be seen on an 8xOC3ATM line card, and the line card
may stop forwarding traffic:
%QM-4-STUCK: Port 0 Queue mask 0x80
Conditions: This symptom is observed on a Cisco 12000 series that is running the gsr-p-mz image
of Cisco IOS Release 12.0(28)S.
Workaround: Perform a microcode reload on the line card.
• CSCee34474
Symptoms: OSPF peers are mapped to the wrong sub-interfaces.
Conditions: This symptom occurs after a HA switch over the ATM interfaces were up and appear to
be operational with OSPF adjacencies formed.
Workaround: There is no workaround.
• CSCee36050
Symptoms: A VIP crashes with the following error message:
VIP-3-SYSTEM_EXCEPTION: VIP System Exception occurred sig=10, code=0x10
Conditions: This symptom is observed on a Cisco 7500 series when you re-use a channel group (or
subinterface) that was previously configured with a Frame Relay DLCI “set” service policy.
Workaround: Remove the “set” service-policy before you remove the channel group (or
subinterface).
• CSCee38324
Symptoms: A VIP may crash.
Conditions: This symptom is observed on a Cisco 7500 series when QoS is configured on the
interface of the VIP and traffic is flowing.
Workaround: There is no workaround.