Cisco Cisco IOS Software Release 12.4(23)

CSCse05736

Symptoms: A router that is running RCP can be reloaded by a specific packet.

Conditions: This symptom is seen under the following conditions:

The router must have RCP enabled.

The packet must come from the source address of the designated system configured to send RCP 
packets to the router.

The packet must have a specific data content.

Workaround: Put access lists on the edge of your network blocking RCP packets to prevent spoofed 
RSH packets. Use another protocol such as SCP. Use VTY ACLs. 

CSCek59078

Symptoms: An L2TPv3 session is established when voluntary tunneling is configured and both peers 
have corresponding configurations. However, after you configure a pseudowire on a virtual PPP 
interface on one of the peers, the session on this peer is up but the line protocol is down, an a 
“virtual-PPP1 is up, line protocol is down” error message is generated.

Conditions: This symptom is observed when the virtual PPP interface is first deleted via the no 
interface virtual-ppp number command and then reconfigured via the interface virtual-ppp 
number command before you configure a pseudowire on the virtual PPP interface.

Workaround: Before you configure a pseudowire on the virtual PPP interface, ensure that the virtual 
PPP interface has never been unconfigured via the no interface virtual-ppp number configuration 
command. 

CSCsb24255

Symptoms: A router may generate the following error message and a MALLOC failure may occur:

flex_dsprm_voice_connect: voice tdm connect failed

Conditions: This symptom is observed on a Cisco router that processes a large number of calls with 
a short call duration via an E1 PRI.

Workaround: There is no workaround. 

CSCsc39890

Symptoms: A router that is running Cisco IOS may reload unexpectedly. 

Conditions: For this symptom to occur, the router must be configured for ISDN. One possible trigger 
is when using SNMP to poll information about calls while the calls are in the process of completing.

Workaround: There is no workaround. 

CSCsf30493

Symptoms: When a T.37 onramp call is made, the following error message may be generated:

%CSM-3-NO_VDEV: No modems associated

Conditions: This symptom is observed on a Cisco AS5850 that runs Cisco IOS interim Release 
12.4(10.7). The symptom may not be platform-specific.