Specifications

1382
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S
Workaround: Remove the ACL configuration from the interface that you delete before you add a new
interface.
• CSCeb21537
Symptoms: When multicast is enabled, a Fast Ethernet (FE) egress interface may fail to function.
Although the mroute table appears to be correct, packets are not forwarded from the FE interface.
Conditions: This symptom is observed on a Cisco 10000 series.
Workaround: There is no workaround.
• CSCeb23201
Symptoms: An Any Transport over Multiprotocol Label Switching (AToM) virtual circuit (VC) may
become stuck and not respond to changes in the state of its attachment circuit.
Conditions: This symptom is observed on a Cisco Catalyst 6000 series or Cisco 7600 series that is
configured for Ethernet over MPLS (EoMPLS) in VLAN mode.
Workaround: There is no workaround.
• CSCeb27452
Symptoms: A Cisco router that functions in a Multiprotocol Label Switching (MPLS) environment
may reload unexpectedly with a bus error.
Conditions: This symptom is observed under rare circumstances when the router attempts to send
an Internet Control Message Protocol (ICMP) packet that was triggered by an MPLS packet.
Workaround: There is no workaround.
• CSCeb34203
Symptoms: A Cisco router may experience output queue packet drops on the priority queue before
the interface is congested on an E1 serial interface on a PA-MC-E3.
Conditions: This symptom is observed on a Cisco 7200 series router that is running Cisco IOS
Release 12.1(18)E. The symptom may also occur in other releases.
Workaround: Enter the tx-ring-limit interface configuration command to increase the value of the
drivers transmitted on the queue. see the following document for additional information:
http://www.cisco.com/warp/customer/121/txringlimit_6142.html
• CSCeb35205
Symptoms: A Cisco router may reload when a subdirectory is created on an Advanced Technology
Attachment (ATA) Flash disk.
Conditions: This symptom is observed when the ATA Flash disk space that is allocated to the
subdirectory contains data from previously deleted files.
When a subdirectory is created or extended, it is given space on the ATA Flash disk. If this space
contains zeros, the symptom does not occur. However, if the space was previously used, the space
does contain data bytes from the previous file, and these data bytes may confuse the file system. This
situation may cause the router to reload.
Workaround: Do not create subdirectories on the ATA Flash disk.
• CSCeb36929
Symptoms: When a Cisco router is performing tag imposition, it may reload because of a bus error.
Conditions: This symptom is observed when you create a new generic routing encapsulation (GRE)
tunnel after the router has booted up and when GRE packets are received through this GRE tunnel
and forwarded as Multiprotocol Label Switching (MPLS) packets.