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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(30)S4
Conditions: This symptom is observed on a Cisco router that integrates the fix for caveat
CSCef16096 when the following conditions are present:
The router is configured for OSPF and MPLS traffic engineering (TE).
The interfaces, OSPF adjacencies, and TE tunnels are flapping.
There are more than 300 OSPF interfaces (in any state, including administratively down) in the
OSPF area that is configured for MPLS TE.
You can check the number of interfaces by entering the show ip ospf or show ip ospf interface brief
command. Note that all interfaces that are covered by network statements are included in the
command output, even those that are in the administratively down state.
A list of the affected releases can be found at
http://www.cisco.com/cgi-bin/Support/Bugtool/onebug.pl?bugid=CSCef16096. Cisco IOS
software releases that are not listed in the “First Fixed-in Version” field at this location are not
affected.
Workaround: There is no workaround.
CSCsa84587
Symptoms: A 6PE router crashes during an IPv6 ping to another PE router at the far side of the
network.
Conditions: This symptom is observed when you enter the no mpls ipv6 source-interface command
followed by no interface type number command in which the type number argument represents the
IPv6 source interface that was configured in the mpls ipv6 source-interface command.
Workaround: When you want to disable the IPv6 source interface, first enter the no interface type
number command in which the type number argument represents the IPv6 source interface that is
configured in the mpls ipv6 source-interface command and then enter the no mpls ipv6
source-interface command.
CSCsa88340
Symptoms: Unicast traffic that travels over an ATM subinterface between a PE router and a CE
router stops.
Conditions: This symptom is observed on a Cisco 12000 series that functions as a PE router and that
is configured with an ATM ISE line card when the following conditions are present:
Remove the VRF that has only the ATM subinterface associated to it.
Define a new VRF and remap the ATM subinterface to this new VRF.
Enable RPF on the ATM subinterface.
Workaround: Enter the shutdown interface configuration command followed by the no shutdown
interface configuration command on the ATM subinterface or remove and re-add the ATM
subinterface configuration.
CSCsb05218
Symptoms: An IPv6 ACL configuration may be lost or incorrect after an SSO switchover.
Conditions: This symptom is observed when a Cisco 12000 series performs IPv6 ACL filtering and
when the ACL is modified.
Workaround: There is no workaround.
CSCsb14703
Symptoms: The PXF engine of a Cisco 10000 series crashes.
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