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1019
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
priority-group VC priority queueing
traffic-rate VC traffic rate
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS Release 12.0S.
Workaround: There is no workaround.
CSCef87309
Symptoms: A basic back-to-back ping fails on an Engine 4+ line card.
Conditions: This symptom is observed on a Cisco 12000 series that runs the c12kprp-p-mz image of
a Cisco IOS interim release for Release 12.0(30)S. However, this caveat is resolved in
Release 12.0(30)S.
Workaround: There is no workaround.
CSCef89192
Symptoms: A self-ping may not function on a Cisco 12000 series and traffic may stop.
Conditions: This symptom is observed on a Cisco 12000 series after you remove and reconfigure a
port-channel subinterface.
Workaround: Remove the member interfaces from the channel group and add them again. Doing so
enables traffic to resume.
CSCef89925
Symptoms: IPv4 multicast traffic may be punted to the CPU of the RP, causing a throughput of only
700 pps.
Conditions: This symptom is observed on a Cisco 12000 series that runs the gsr-p-mz image of
Cisco IOS Release 12.0(30)S.
Workaround: There is no workaround.
CSCef91030
Symptoms: After the default route is received from a remote PE for a VRF, communication stops for
traffic via the default route in this VRF on a Cisco 12000 series that functions as a PE router in an
MPLS VPN environment. The packets are switched out of the core MPLS interface untagged as
native IPv4 packets instead of with MPLS and BGP labels.
Conditions: This symptom is observed when the traffic is received from VRF interfaces on an
Engine 2 line card that is installed in a Cisco 12000 series that functions as a PE router.
The symptom occurs in Release 12.0(27)S2, Release 12.0(27)S3, and interim releases for Cisco IOS
Release 12.0(30)S. Other releases may be affected too. The symptom does not occur in
Release 12.0(24)S2.
The symptom occurs when the VRF ingress interface is configured on an Engine 2 3-port GE line
card or Engine 2 1-port OC-48 POS line card. Other line cards may be affected too. The symptom
does not occur when the VRF ingress interface is configured on an Engine 0 4-port OC-3 POS line
card or 4-port GE ISE line card.
Workaround: There is no workaround.
CSCef92153
Symptoms: When a VRF VLAN subinterface punts a packet such as an ARP or ICMP packet to the
CPU of the line card, the main interface is unable to process a packet such as ICMP packet that is
destined for the main interface. When BGP packets enter and leave via the main interface, a BGP
neighbor may go down.
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