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761
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
Workaround: Configure the police rate explicitly in bits-per-second.
CSCsc88057
Symptoms: Traffic forwarding stops on the Gigabit Ethernet modular baseboard
(EPA-GE/FE-BBRD) of a Modular GbE Engine 4+ line card.
Conditions: This symptom is observed on a Cisco 12000 series when you add an ACL to the 3-port
Gigabit Ethernet port adapter (EPA-3GE-SX/LH-LC) of the same Modular GbE Engine 4+ line card.
Workaround: Perform a microcode reload on the 3-port Gigabit Ethernet port adapter of the Modular
GbE Engine 4+ line card. Alternately, reload the router. However, note that both workarounds
interrupt the traffic flow.
CSCsc88940
Symptoms: After an RPF interface change occurs, the RPF check passes always on port 0 of an
Engine 2 line card. This situation causes non-RPF traffic to be forwarded via the RPF interface and
causes multicast traffic with a valid RPF (S,G) to be duplicated.
Conditions: This symptom is observed on a Cisco 12000 series and occurs because of an error during
the calculation of the RPF interface.
Workaround: Do not use port 0 of an Engine 2 line card for multicast traffic in a configuration in
which RPF interface changes may occur in such a way that port 0 receives non-RPF traffic.
CSCsc96691
Symptoms: L2TPv3 traffic may not recover.
Conditions: This symptom is observed on a Cisco 12000 series after you have deleted and added a
VLAN subinterface on a 4-port Gigabit Ethernet ISE line card (4GE-SFP-LC).
Workaround: Reload the router.
CSCsd02954
Symptoms: Some CEF entries are missing from some VRFs, as shown in the output of the show ip
cef inconsistency now command.
Conditions: This symptom is observed after an OIR or reload of a Cisco 12000 series GE ISE line
card.
Workaround: There is no workaround. When the symptom has occurred, enter the clear ip cef epoch
command to recover the CEF entries. If this does not recover the CEF entries, enter the clear ip
route vrf command.
Further Problem Description: So far, the symptom is observed for local “receive” entries, such as
/32 entries for a VRF loopback interface. However, the symptom may also occur for other types of
VRF FIB entries.
CSCsd03412
Symptoms: When you load a Cisco IOS software image, the interface-level uRPF configuration may
be lost.
Conditions: This symptom is observed on a Cisco 12000 series when the uRPF interface level
configuration has the allow-self ping keyword enabled in a command such as the ip verify unicast
source reachable-via allow-self-ping command before you the Cisco IOS software image.
A list of the affected releases can be found at
http://www.cisco.com/cgi-bin/Support/Bugtool/onebug.pl?bugid=CSCsd03412. Cisco IOS
software releases that are listed under the “All affected versions” link at this location are affected.
Cisco IOS software releases that are listed in the “First Fixed-in Version” field at this location are
not affected.
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