Cisco Cisco IOS Software Release 12.4(23)
501
Caveats for Cisco IOS Release 12.4
OL-7656-15 Rev. J0
Resolved Caveats—Cisco IOS Release 12.4(8b)
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CSCse29428
Symptoms: A crash is seen with %ALIGN-1-FATAL after showing %SYS-2-
CHUNKEXPANDFAIL and %SYS-2-MALLOCFAIL repeatedly.
CHUNKEXPANDFAIL and %SYS-2-MALLOCFAIL repeatedly.
Conditions: This symptom is observed on a Cisco 3725 router that is running Cisco IOS
Release 12.4(5a) with the c3725-advipservicesk9-mz image that is running IPSec VPN.
Release 12.4(5a) with the c3725-advipservicesk9-mz image that is running IPSec VPN.
Workaround: There is no workaround.
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CSCse56552
Symptoms: Connections fail through a router that uses CBAC. The pre-gen session is created, and
the download or transfer begins. The pre-gen session times out and gets deleted from the router.
Since the full session never gets established, the connection then times out on the host.
the download or transfer begins. The pre-gen session times out and gets deleted from the router.
Since the full session never gets established, the connection then times out on the host.
Conditions: This symptom is observed on a Cisco router that is running Cisco IOS Release 12.4(8)
and using CBAC outbound on the outside interface when policy based routing is applied.
and using CBAC outbound on the outside interface when policy based routing is applied.
Workaround: There is no workaround.
Further Problem Description: This bug is first seen in Cisco IOS Interim Release 12.4(7.24).
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CSCse58419
Symptoms: The memory consumption by the Chunk Manager process increases over time.
Conditions: This behavior is observed on certain occasions when NAT is configured. When NVI
with VRF is set in the system, the memory leaks rapidly. When NAT with VRF is set in the system,
plus there is embedded address translation needed or skinny protocol traffic, the memory leaks in a
slow pace.
with VRF is set in the system, the memory leaks rapidly. When NAT with VRF is set in the system,
plus there is embedded address translation needed or skinny protocol traffic, the memory leaks in a
slow pace.
Workaround: There is no workaround.
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CSCse98590
Symptoms: The router will display SYS-2-MALLOCFAIL messages on the console, and various
protocols will operate erratically as a result of a low memory condition.
protocols will operate erratically as a result of a low memory condition.
Conditions: When a router has to duplicate incoming IPv4 multicast packets for transmission on
multiple interfaces, and one of those interfaces is a GRE tunnel operating in GRE IPv6 mode, then
memory used to duplicate that packet stream will not be freed. As a result, the router will soon
exhaust all available memory.
multiple interfaces, and one of those interfaces is a GRE tunnel operating in GRE IPv6 mode, then
memory used to duplicate that packet stream will not be freed. As a result, the router will soon
exhaust all available memory.
Workaround: The router will not exhaust memory if packets do not need to be duplicated (for
example, if they enter on one interface and only exit the box through another interface), or if they
do not need to duplicate to a tunnel interface that is running GRE over IPv6 (for example, tunnel
mode GRE IPv4 does not have this problem).
example, if they enter on one interface and only exit the box through another interface), or if they
do not need to duplicate to a tunnel interface that is running GRE over IPv6 (for example, tunnel
mode GRE IPv4 does not have this problem).
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CSCsf27220
Symptoms: A Cisco 7500 series router with any ATM Port Adapter may crash.
Conditions: This symptom is observed when a router is configured with the Next Hop Resolution
Protocol (NHRP) feature. When sending traffic, the router will crash.
Protocol (NHRP) feature. When sending traffic, the router will crash.
Workaround: There is no workaround.
ISO CLNS
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CSCse85158
Symptoms: Locally advertised networks that are configured for the NSAP address- family under
BGP will not be readvertised once they have been cleared from the BGP table.
BGP will not be readvertised once they have been cleared from the BGP table.