Cisco OL-4015-08 Bedienungsanleitung PDF herunterladen (Seite 206)

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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(32)S8

Miscellaneous

• CSCef68324

Cisco Internetwork Operating System (IOSÆ) Software is vulnerable to a Denial of Service (DoS)

and potentially an arbitrary code execution attack from a specifically crafted IPv6 packet. The

packet must be sent from a local network segment. Only devices that have been explicitly configured

to process IPv6 traffic are affected. Upon successful exploitation, the device may reload or be open

to further exploitation.

Cisco has made free software available to address this vulnerability for all affected customers.

More details can be found in the security advisory that is posted at:

http://www.cisco.com/warp/public/707/cisco-sa-20050729-ipv6.shtml

• CSCek37068

Symptoms: Engine 5 Line card crashes due to IMEM SBE

Conditions: SBE in IMEM

Workaround: There is no workaround.

• CSCek42390

Symptoms: The output of "show ip mds forwarding vrf <X> <group>" command (executed on E3

Line cards) would normally show both the slowpath entries as well as the hardware switching

entries. However, after upgrade to 32S2 nightly of 04/28, some of the mVRFs show only the

slowpath entries for this command.

Conditions: First reported on 32S2 nightly image of 4/28. However, it could have existed before that.

Workaround: None is required. The hardware entries are still properly programmed and can be still

seen using "show ip hardware-m rx vrf <X> <group>" command.

Further Problem Description: The main concersns are: - Output of the command is not consistent

for different vrfs even on the same Cisco IOS image. This can lead to confusion or incorrect

interpretation while troubleshooting problems. - Its not clear if the lack of hardware entries in the

output of the command should be treated as normal or not. - The "expected" output of this command

needs to be documented. It is suggested that this bug be used to document the ’normal’/’expected’

output of the command (i.e whether hardware entries should be expected or not).

• CSCek61276

Symptoms: IPv6 traffic stops.

Conditions: This symptom is observed on a Cisco router when you first disable and then re-enable

IPv6 on an interface.

Workaround: Enter the shutdown interface configuration command followed by the no shutdown

interface configuration command on the affected interface.

• CSCek69776

Symptoms: Ethernet frames with layer 2 header comprised of BEEFF00D are sent out of an MPLS

TE tunnel during MPLS TE tunnel reconvergence.

Conditions: This symptom has been observed on an Engine 3 Gigabit Ethernet line card of a Cisco

12000 series router. The symptom was not present on POS line cards of the same engine.

Symptom has been observed between the time when reconvergence of all tunnels is triggered and

the time when reconvergence of the particular tunnel is completed.

Workaround: There is no workaround.

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