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426
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(33)S2
Conditions: Large amount of traffic, which could exhaust the NetFlow cache.
Workaround: There is no workaround.
CSCsj30417
Symptoms: In Eng3 ATM, when a subinterface flaps, traffic to certain destinations is forwarded to
the wrong subinterface.
Conditions: This symptom is observed in Cisco IOS Release 12.0(32)S05 and 12.0(32)S06. The
symptom is not found in Cisco IOS Release 12.0(31)S2.
Workaround: There is no workaround; however, reloading the line card solves the problem.
CSCsj36133
Symptoms: A BGP neighbor may send a notification reporting that it received an invalid BGP
message with a length of 4097 or 4098 bytes.
Conditions: The problem can be seen for pure IPv4 BGP sessions (no MP-BGP in use) when the
router that is running the affected software generates a large number of withdraws in a short time
period and fills an entire BGP update message (up to 4096 bytes normally) completely with
withdraws. Because of a counting error, the router that is running the affected software can generate
an update message that is 1 or 2 bytes too large when formatting withdraws close to the 4096 size
boundary.
Workaround: The issue is not seen when multiple address families are being exchanged between
BGP neighbors.
CSCsj49293
Symptoms: The interface output rate (214 Mb/s) is greater than the interface line rate (155 Mb/s).
Conditions: This symptom is observed with a Cisco 7600/7500/7200-NPE400 and below. That is,
PA-POS-2OC3/1OC3 (PULL mode).
Workaround: There is no workaround.
Further Problem Description: From the Ixia, packets are transmitted at 320 Mb/s. On the UUT
(Cisco 7600), the outgoing interface (POS-Enhanced Flexwan) shows the output rate as 200 Mb/s.
But the interface bandwidth is 155 Mb/s.
CSCsk68742
Symptoms: The show ip mds stats linecard command shows MDFS reloads on all line cards.
Conditions: This symptom is observed when multicast distributed routing is added on a VRF
through the configuration of the ip multicast-routing vrf vpn distributed command.
Further Problem Description: Note that while the MDFS reload is a real reload, it is without a
preceding clear, so it will not generally cause traffic interruption because it merely causes the same
information to be downloaded to the line cards again. However, in a highly scaled system that is
running close to the limit, the additional load introduced by a full MDFS reload of every line card
may cause additional failures owing to maxing out of the CPUs.
CSCsk69194
Symptoms: The shape average percent calculation is wrong.
Conditions: This symptom is observed on a Cisco 7500 router that is configured for dLFIoLL. The
policy is attached to ATM and multilink interfaces.
Workaround: Use only absolute values in the shape policy.
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