Cisco Cisco IOS Software Release 12.4(4)T
1419
Caveats for Cisco IOS Release 12.4T
OL-8003-09 Rev. Z0
Resolved Caveats—Cisco IOS Release 12.4(2)T1
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Symptoms—A description of what is observed when the caveat occurs.
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Conditions—The conditions under which the caveat has been known to occur.
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Workaround—Solutions, if available, to counteract the caveat.
Basic System Services
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CSCeh82694
Symptoms: A router crashes when an snmpwalk is performed on the ifTable.
Conditions: This symptom is observed when an interface that is registered for high capacity (HC)
counters deregisters directly.
counters deregisters directly.
Workaround: Disable SNMP or do not poll the ifTable through SNMP.
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CSCei61732
Cisco IOS may permit arbitrary code execution after exploitation of a heap-based buffer overflow
vulnerability. Cisco has included additional integrity checks in its software, as further described
below, that are intended to reduce the likelihood of arbitrary code execution.
vulnerability. Cisco has included additional integrity checks in its software, as further described
below, that are intended to reduce the likelihood of arbitrary code execution.
Cisco has made free software available that includes the additional integrity checks for affected
customers.
customers.
This advisory is posted at
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CSCsb03401
Symptoms: You cannot open a specific port on a Cisco IOS IP SLA responder.
Conditions: This symptom is observed on a Cisco router that runs Cisco IOS Release 12.3(14)T1
when you attempt to open a specific port on the responder instead of using normal control protocol.
The symptom may also occur in Release 12.4 or Release 12.4T.
when you attempt to open a specific port on the responder instead of using normal control protocol.
The symptom may also occur in Release 12.4 or Release 12.4T.
Workaround: Use normal control protocol.
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CSCsb49500
Symptoms: SNMP traps do not function, preventing an SNMP notification view from being properly
associated with a default group that was created via the snmp-server host command.
associated with a default group that was created via the snmp-server host command.
Conditions: This symptom is observed on a Cisco platform that runs Cisco IOS Release 12.4(2)T.
Workaround: Enter the show snmp view command to obtain the SNMP notification view and then
apply this view to the default group that was created via the snmp-server host command.
apply this view to the default group that was created via the snmp-server host command.
Interfaces and Bridging
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CSCei08289
Symptoms: The transmit rate is higher than the configured committed information rate (CIR),
causing the network to drop frames.
causing the network to drop frames.
Conditions: This symptom is observed only when traffic is process-switched and when software
payload compression and header compression are configured.
payload compression and header compression are configured.
Workaround: Enable either CEF or fast-switching. If process-switching must be used, add a
compression adaptor and configure FRF9 data compression instead of packet-by-packet payload
compression. You can enable FRF9 data compression in the following ways:
compression adaptor and configure FRF9 data compression instead of packet-by-packet payload
compression. You can enable FRF9 data compression in the following ways:
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On a point-to-point interface, enter the following command in interface configuration mode: