Cisco Cisco IOS Software Release 12.4(4)T

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Symptoms: A router that is configured for QoS may reload unexpectedly or other serious symptoms 
such as memory corruption may occur.

Conditions: This symptom is observed on a Cisco router that has a cable QoS profile with a name 
that has a length that is greater than 32 characters as in the following example:

cable qos profile 12 name g711@10ms_for_any_softswitch_Traa^C

                          00000000011111111111222222222333^ 

                          12345678901234567890123456789012|

                                                          |

                                                       PROBLEM

                                                      (Variable Overflowed).

Workaround: Change the name of the cable QoS profile qos profile to a length that is less than 32 
characters. 

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Symptoms: A Cisco 10000 series may lose the PVC configurations for several subinterfaces and 
high CPU usage may occur. When you attempt to reconfigure the PVCs, error messages similar to 
the following may be generated:

Router#pvc 35/134 Unable to create PVC 35/134 on ATM1/0/0.10350134. Possibly multiple 

users configuring IOS simultaneously Further info about other user: Process id: 42, 

Process: Slot 1/0 CMD Process, TTY: 0, Location: Console Router(config-subif)#

Conditions: This symptom is observed on a Cisco 10000 series that runs Cisco IOS 
Release 12.2(7)XI1 or Release 12.2(27)SBB.

Workaround: Reload the router. 

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Symptoms: The ip auth-proxy command may not take effect when it is configured on VLAN 
interfaces, and the following error message may be generated:

“Auth-Proxy not configured on interface FastEthernet0/0/0”.

(This error message is generated when an IP phone is connected to port Fa0/0/0.)

Conditions: This symptom is observed only on a router that is configured with switchport interfaces.

Workaround: Configure the ip auth-proxy command on the ingress interface. If this is not an option 
because the ip auth-proxy command must be configured on VLAN interfaces, there is no 
workaround. 

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Symptoms: If a default metric and a redistribution metric are configured under EIGRP, the 
redistributed routes are sometimes removed from the EIGRP topology table. Occurs with the 
following configuration:

router eigrp 1 redistribute ospf 100 metric 1544 10 255 1 1000 network 1.0.0.0 network 4.0.0.0 
default-metric 100 100 100 100 100 auto-summary eigrp event-logging

Conditions: Occurs after the default metric statement is removed.

Workaround: Add the default metric statement back into the configuration, or remove and re-apply 
the explicit redistribute statement for the donor protocol (OSPF in the above example). 

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Symptoms: A router may not clear BGP routes when you enter the clear bgp ipv6 unicast * 
command.