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Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(31)S4
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(31)S2.
Workaround: Bring up a second T1 link in the MLP bundle.
CSCsd30704
Symptoms: When you first enter the router isis area-tag command followed by the address-family
ipv6 command and then change the administrative distance for the address-family IPv6
configuration, the RP may crash.
Conditions: This symptom is observed on a Cisco 12000 series that runs the gsr-p-mz image of
Cisco IOS Release 12.0(30)S5, Release 12.0(31)S3, or Release 12.0(32)S1. The symptom may also
occur on other platforms.
Workaround: There is no workaround.
CSCsd38657
Symptoms: An RP crashes when a Gigabit Ethernet interface of a SPA is shut down. When this
situation occurs, the following error message and traceback is generated:
Unexpected exception to CPUvector 700, PC = 2CEE34
-Traceback= 2CEE34 4C40000 2D8958 2D8D2C 2C1164 14048C 2CFB4C
If a crashinfo file is generated, the last log message is the following:
%SYS-6-STACKLOW: Stack for process CEF process running low, 0/6000
On a router that is configured with two RPs that function in RPR+ mode, when the RP crashes, a
switchover occurs. However, the crashed RP does not come up and remains in standby mode.
Conditions: These symptoms are observed on a Cisco router when the recursive lookup on a static
MPLS route does not specify a next hop interface. For example, the symptom occurs when the ip
route destination-prefix mask next-hop1 command is enabled but does not occur when the ip
route destination-prefix mask interface1 next-hop1 command is enabled.
Workaround: Ensure that the interface argument is included in the static route, as in the following
command: ip route destination-prefix mask interface1 next-hop1.
Wide-Area Networking
CSCsc76188
Symptoms: Even though the show connection command may indicate that an MFR segment is in
the UP state, when you enter a more detailed command such as the show connection id ID
command, the connection state may show as INVALID and the segment states as unknown.
Conditions: This symptom is observed on a Cisco 7500 series that runs Cisco IOS
Release 12.0(31)S2 and occurs for both Frame Relay and MFR connections but not for ATM
connections. Note that the symptom does not occur on a Cisco 12000 series.
Workaround: There is no workaround.
CSCsd11874
Symptoms: When you enter the shutdown interface configuration command followed by the no
shutdown interface configuration command on an MFR interface when the bundle links are down,
the serial interfaces that are associated with the MFR interface remain in the IDLE state.
Conditions: This symptom is observed on a Cisco router that is configure for MFR.
Workaround: Enter the shutdown interface configuration command followed by the no shutdown
interface configuration command on each serial interface that is associated with the MFR interface.
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