Cisco Cisco IOS Software Release 12.4(4)T
1325
Caveats for Cisco IOS Release 12.4T
OL-8003-09 Rev. Z0
Resolved Caveats—Cisco IOS Release 12.4(4)T2
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CSCeh18306
Symptoms: On a Cisco 2600-XM series that is configured with an AIM-ATM module, when one
PVC is configured for ABR and another PVC is configured for another ATM class, CRC errors occur
on the far end of the ATM link of the PVC that is configured for the other ATM class. This situation
may occur because the PVC that is configured for ABR sends two RM cells in a row and overwrites
some data of the PVC that is configured for the other ATM class
PVC is configured for ABR and another PVC is configured for another ATM class, CRC errors occur
on the far end of the ATM link of the PVC that is configured for the other ATM class. This situation
may occur because the PVC that is configured for ABR sends two RM cells in a row and overwrites
some data of the PVC that is configured for the other ATM class
Conditions: This symptom is observed on a Cisco 2651-XM that runs Cisco IOS Release 12.3 and
that is configured with an AIM-ATM module. However, the symptom may not be
platform-dependent and may occur on any platform that is configured with an AIM-ATM module.
that is configured with an AIM-ATM module. However, the symptom may not be
platform-dependent and may occur on any platform that is configured with an AIM-ATM module.
Workaround: Do not configure ABR on a PVC.
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CSCeh88604
Symptoms: One or more VIP slot controllers reset.
Conditions: This symptom is observed on a Cisco 7500 series when the ip nbar protocol-discovery
command is enabled. The symptom may not be platform-dependent and may also occur on other
platforms in a similar configuration.
command is enabled. The symptom may not be platform-dependent and may also occur on other
platforms in a similar configuration.
Workaround: Disable protocol discovery by entering the no ip nbar protocol-discovery command.
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CSCei24086
Symptoms: A Cisco AS5850 gateway that processes mixed traffic reloads unexpectedly after a few
minutes of functioning under stress.
minutes of functioning under stress.
Conditions: This symptom is observed on a Cisco AS5850 gateway that runs Cisco IOS interim
Release 12.4(1.8)T and that is configured with voice traffic (H.323 and SIP) with PRI and CAS, Fax
Relay T.38, and TDM Hairpinning.
Release 12.4(1.8)T and that is configured with voice traffic (H.323 and SIP) with PRI and CAS, Fax
Relay T.38, and TDM Hairpinning.
Workaround: There is no workaround.
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CSCei52546
Symptoms: The atm-ldp keyword in show mpls commands is not recognized.
Conditions: This symptom is observed on a Cisco 7200 series and Cisco 7500 series that is
configured with an RSP and that run Cisco IOS Release 12.4.
configured with an RSP and that run Cisco IOS Release 12.4.
Workaround: There is no workaround.
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CSCei75623
Symptoms: A Cisco router may not forward multicast traffic that is has received via a GRE tunnel
that belongs to a VRF.
that belongs to a VRF.
Conditions: This symptom is observed on a Cisco router that runs Cisco IOS Release 12.4 or
Release 12.4(2)T when CEF is enabled on the tunnel interface. The symptom does not occur with
unicast traffic.
Release 12.4(2)T when CEF is enabled on the tunnel interface. The symptom does not occur with
unicast traffic.
Workaround: Disable CEF on the tunnel interface.
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CSCei82163
Symptoms: A Cisco AS5400 might not release all voice resources for an MGCP call after it is
disconnected.
disconnected.
Conditions: This symptom is observed on both the Cisco AS5400 and Cisco AS5850 platforms but
is not platform dependent. The symptom is associated with the simultaneous disconnection of a
large number of calls.
is not platform dependent. The symptom is associated with the simultaneous disconnection of a
large number of calls.
Workaround: There is no workaround.