Specifications

1177
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S1
• CSCee65004
Symptoms: A 1-port 10-Gigabit Ethernet line card (1X10GE-LR-SC) may crash, reporting
%TX192-3-CPUIF errors.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(27)S1 when you shut down the 10GE port of a 4-port 10 Gigabit Ethernet module
(WS-X6704-10GE) that is installed in a Cisco 7609 at the other side of the connection.
Workaround: There is no workaround.
• CSCee66206
Symptoms: When you boot a Cisco 7200 series that is configured with an NPE-300 or NPE-400 and
that runs a c7200-js-mz image, the router may crash with a traceback.
Conditions: This symptom is observed when the c7200-kboot-mz image is the bootloader and when
the router runs Cisco IOS interim Release 12.1(22.3)E1. The symptom may also occur in other
releases such as 12.0 S, 12.2 S, and 12.3.
Workaround: There is no workaround.
• CSCee67207
Symptoms: A public recursive route is not labeled.
Conditions: This symptom is observed on a Cisco router that functions as a BGP peer and that has
the neighbor name send-label command enabled as part of an IPv4 address family, which is
required for Inter-AS configurations. The symptom affects routers that perform MPLS forwarding
using ASICs such as some Cisco 7200 series routers, the Cisco 7304, the Cisco 10000 series, the
Cisco 12000 series, and the Cisco RPM-XF. (This list may not be exhaustive.)
Workaround: There is no workaround. Note that the symptom does not occur if the neighbor name
send-label command is enabled as part of an IPv4 address family VRF.
• CSCee68666
Symptoms: It may take up to 1 second for a line card to notify the RP about a physical layer failure
alarm. This situation prevents fast sub-second IGP convergence.
Conditions: This symptom is observed in a non-FRR and non-APS configuration.
Workaround: There is no workaround.
• CSCee69861
Symptoms: When a host sends a path MTU discovery packet into a L2TPv3 tunnel, a Cisco 10720
returns an ICMP unreachable packet, indicating that the path MTU is “MTU-32byte (L2TPv3
header)-(layer2 header of customer packets),” which is incorrect. This situation causes TCP
communications such as FTP or HTTP downloads over the L2TPv3 tunnel to fail. For example, 26
bytes (outer IP + L2TPv3 header sizes) may be missing.
Conditions: This symptom is observed on a Cisco 10720 that functions as a PE router.
Workaround: If this is an option, set an MTU with a small size at the server side. If this is not an
option, there is no workaround.
• CSCee69887
Symptoms: A dual SRP ring fails to become active completely due to an is-type mismatch. The
output of the show clns neighbors command indicates that a certain system interface remains in the
“Init” state indefinitely, although the output of the show ip interface brief command shows that this
interface is up.
Conditions: This symptom is observed when a dual SRP ring is configured on three routers that run
Cisco IOS Release 12.2S. The symptom may also occur in other releases.