Specifications
1283
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S4
Conditions: This symptom is observed on a Cisco 12012 that is configured for SSH but may occur
on any Cisco platform that is configured for SSH.
Workaround: There is no workaround.
• 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.
• 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.
Workaround: Disable hardware forwarding.
• CSCef54779
Symptoms: Under a rare condition, when a main interface switches over to a backup interface on
4-port GE line card, a ping to another neighboring interface that is not at all related to the backup
interface fails. A sniffer trace shows that the Src/Dst MAC address in the ICMP reply is that of the
backup interface.
Conditions: This symptom is observed on a Cisco 12000 series when you repeatedly disable the
main interface that is associated with a backup interface.
Workaround: Enter the shutdown interface configuration command followed by the no shutdown
interface configuration command on the affected interface.
• CSCef67078
Symptoms: A PXF buffer leak occurs on an L2TPv3 decapsulation router, which van be observed in
the output of the show hardware pxf cpu buffer command:
router#show hardware pxf cpu buffer
FP buffers
pool size # buffer available allocate failures low buffer drops
----------------------------------------------------------------------------
0 9344 1293 1293 0 0
1 1664 12930 12930 0 0
2 640 26746 127 0 77165
3 256 34072 34072 0 0
4 128 59934 59934 0 0
Depending on the packet size, the buffer leak can occur in different pools.
Conditions: The symptom is observed on a Cisco 10720 in the following two scenarios:
- An MPLS-enabled interface is the network backbone for L2TPv3 tunnels.
- An 802.1q interface is the network backbone for L2TPv3 tunnels and an input security ACL with
more than 400 lines is configured on the 802.1q backbone interface.
Workaround: There is no workaround.