Cisco Cisco IOS Software Release 12.4(4)T
905
Caveats for Cisco IOS Release 12.4T
OL-8003-09 Rev. Z0
Resolved Caveats—Cisco IOS Release 12.4(15)T5
Resolved Caveats—Cisco IOS Release 12.4(15)T5
Cisco IOS Release 12.4(15)T5 is a rebuild release for Cisco IOS Release 12.4(15)T. The caveats in this
section are resolved in Cisco IOS Release 12.4(15)T5 but may be open in previous Cisco IOS releases.
section are resolved in Cisco IOS Release 12.4(15)T5 but may be open in previous Cisco IOS releases.
The following information is provided for each caveat:
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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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CSCek71254
Symptoms: The output of the show ipv6 eigrp neighbor command indicates that an IPv6 EIGRP
process is in SHUTDOWN state when it was previously configured with a no shutdown command
to activate the routing process.
process is in SHUTDOWN state when it was previously configured with a no shutdown command
to activate the routing process.
Conditions: Occurs after configuring redistribute eigrp number under an IPv6 routing protocol
instance, such as RIP or another EIGRP instance. The new IPv6 EIGRP process appears in the
running configuration but does not create a functioning routing process.
instance, such as RIP or another EIGRP instance. The new IPv6 EIGRP process appears in the
running configuration but does not create a functioning routing process.
Workaround: Enter the interface configuration mode and configure the ipv6 eigrp num command.
Then enter into the IPv6 EIGRP routing process using ipv6 router eigrp num and configure no
shutdown.
Then enter into the IPv6 EIGRP routing process using ipv6 router eigrp num and configure no
shutdown.
The problem does not occur if the IPv6 EIGRP process is configured first at interface configuration
level instead of entering the redisttribute eigrp num command.
level instead of entering the redisttribute eigrp num command.
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CSCek76062
Symptoms: A router crashes because of a block overrun (overwriting the memory block).
Conditions: This symptom is observed only when templates are exported in the export pak, which
is used only in version 9 version of exporting.
is used only in version 9 version of exporting.
Workaround: Version 5 could be used for exporting.
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CSCsg64163
Symptoms: Cisco IOS does not handle packet fragments for port specific NAT rules like:
ip nat inside source static udp 192.168.21.2 500 interface FastEthernet0/0 500 ip nat
inside source static udp 192.168.21.2 4500 interface FastEthernet0/0 4500
Only first fragment is being translated, others are not. This symptom remains even if the ip
virtual-reassembly command is active on interfaces.
virtual-reassembly command is active on interfaces.
Conditions: This symptom has been observed on Cisco IOS Release 12.4 and Release 12.4T.
Workaround: There is no workaround.
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CSCsg85810
Symptoms: Cisco 2801 router crashes when the no crypto engine aim 0 command is entered.
Conditions: Occurs when shutting down the AIM-VPN/EPII-Plus card on a Cisco 2801 when there
is an active IPSec tunnel.
is an active IPSec tunnel.
Workaround: Disable the onboard crypto engine before using AIM/VPN/EPII-Plus card.
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CSCsh12493