Cisco OL-4015-08 Bedienungsanleitung Seite 95

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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(33)S1
Conditions: Occurs on a Cisco Catalyst 6509.
Workaround: There is no workaround.
CSCsj12867
Symptoms: The following message can be seen after executing the write memory command, even
though the version has not been changed.
Router# write memory
Warning: Attempting to overwrite an NVRAM configuration previously written by a different
version of the system image. Overwrite the previous NVRAM configuration?[confirm]
The router then restarts with the following traceback:
-Traceback= 6067F3DC 6067FB38 605E3FE8 60686384 605E3FE8 605188BC 60518830
605444D4 60539164 6054719C 605AB65C 605AB648
Conditions: This symptom is observed on a Cisco 7206 VXR (NPE-400) with
C7200-IO-FE-MII/RJ45= or C7200-I/O= running the Cisco IOS Release 12.2(24a) interim build.
Workaround: There is no workaround.
CSCsj21785
Symptoms: A Traffic Engineering (TE) tunnel does not re-optimize to explicit path after an MTU
change.
Conditions: The TE tunnel is operating via explicit path. The MTU on outgoing interface is changed.
OSPF is flapped, and it does not come up as there is MTU mismatch (MTU is not changed on peer
router). Meanwhile the TE re- optimizes to a dynamic path-option as expected. Now the MTU is
reverted back to the previous value, and the OSPF adjacency comes up. The TE tunnel does not
re-optimize to explicit path. Manual re-optimization of the TE tunnel fails as well, and the TE tunnel
sticks to the dynamic path.
Workaround: Enter the shutdown command followed by the no shutdown command on the
particular interface.
CSCsj68299
Symptoms: The line card crashes when the interface MTU is changed.
Conditions: This symptom is observed when having both ingress and egress E0 cards with MPLS in
the core and when an ATOM tunnel is configured on the egress line card.
Workaround: Before changing the MTU, stop the traffic across all the E0 line card interfaces. You
can resume traffic after changing the MTU.
CSCsj74173
Symptoms: Egress E0 - Two ports OC3 channelized to DS1/E1 are crashing continuously just as
traffic starts.
Conditions: E0 - In an IP->Tag fragmentation case with E4/E4P/E6 POS cards as the ingress and E0
as the egress card, for certain frame sizes larger than the egress MTU, the E0 egress card crashes.
This happens only with the E0 card as egress.
Workaround: Make sure that the packets sent are less than the egress MTU of the E0 linecard to
avoid any fragmentation.
CSCsj99269
Symptoms: With some VPN configurations, such as configurations with a multipath import or an
import map, the CPU usage of the router may be very high for a long time, even after BGP
convergence has occurred.
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