Cisco OL-4015-08 Bedienungsanleitung Seite 63

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415
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(33)S3
CSCsv38557
Symptoms: POS interfaces run into a tx stuck condition, and heavy packet drops occur in the local
switching path. The VIP CPU runs high due to the Rx- Side Buffering mechanism that kick starts in
the local switching path in the VIP.
Conditions: This symptom is observed on a Cisco 7500 node with a VIP that has the POS interfaces
up and data traffic being locally switched between the POS interfaces. This symptoms is triggered
when a service policy is applied/removed followed by interface flaps.
Workaround: “test rsp stall” cleans up the Rx-Side buffered packets. Hence this could be considered
a workaround. However, this does not always help. Doing a soft OIR removal and insertion of the
LC always helps recover from this situation. The best workaround is to apply a service policy.
CSCsv57665
Symptoms: A router is not learning MAC addresses when unknown multicast traffic (packet size
greater than min_mtu for that VFI towards core) is sent.
Conditions: This symptom is observed when the MTU of the core-facing interface is changed to
some value less than the default value and then is increased back to the default. The min_mtu is stuck
on the lesser value.
Workaround: There is no workaround.
CSCsv66827
Symptoms: Clearing the SSH sessions from a VTY session may cause the router to crash.
Conditions: The symptom is observed when a Cisco 7300 series router is configured for SSH and
then an SSH session is connected. If the SSH session is cleared every two seconds using a script, the
symptom is observed.
Workaround: There is no workaround.
CSCsv73509
Symptoms: When “no aaa new-model” is configured, authentication happens through the local even
when tacacs is configured. This happens for the exec users under vty configuration.
Conditions: Configure “no aaa new-model,” configure login local under line vty 0 4, and configure
login tacacs under line vty 0 4.
Workaround: There is no workaround.
CSCsv74508
Symptom: If a linecard is reset (either due to error or a command such as hw-module slot reload) at
the precise time an SNMP query is trying to communicate with that LC, the RP could reset due to a
CPU vector 400 error.
Conditions: In order to experience these symptoms the linecard is reset (either due to error or a
command such as hw-module slot reload) at the precise time an SNMP query is received.
Workaround: There is no workaround.
CSCsv82120
Symptoms: A CHOC12 T1 continuously flaps when the T1 link that is connected to a third-party
CE router flaps. With the Cisco router, the same issue is not observed.
Conditions: This symptom is observed under the following conditions:
Cisco IOS Release 12.0(32)S11n
CHOC12 T1 links with a third-party CE router
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