Cisco Cisco IOS Software Release 12.4(23) Notas de publicación

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Caveats for Cisco IOS Release 12.4
OL-7656-15 Rev. J0
  Resolved Caveats—Cisco IOS Release 12.4(3b)
CSCsc41694
Symptoms: A router hangs while unconfiguring the BGP no router bgp command. 
Conditions: This symptom has been observed in Cisco AS5400 and Cisco AS5850 routers having 
the image c5400-js-mz.123-16.15 
Workaround: There is no workaround.
Miscellaneous
CSCec16597
Symptoms: Cisco CallManager controlled MGCP gateways configuration download function 
always configures “mgcp fax t38 inhibit”. If this is changed manually in the Cisco IOS CLI, the 
configuration download facility will change it back to “mgcp fax t38 inhibit”. 
This DDTS removes the code that automatically configures this line. 
If customers are using CCM MGCP fax relay between gateways that are running older Cisco IOS 
versions, and the Cisco IOS 12.4T version with this change, the fax connections originating from 
the gateways that are running previous Cisco IOS versions and terminating on the Cisco IOS 
Release 12.4T gateway will fail unless “mgcp fax t38 inhibit” is configured on the Cisco IOS 
Release 12.4T gateway. 
If all gateways in the customer network are running the new Cisco IOS 12.4T version with this fix, 
then they may configure which ever mode as desired. 
With the fix to 
CSCec16597
, the configuration utility will neither add nor remove this CLI 
statement. 
Conditions: There are no conditions. 
Workaround: Use the following command to enable and disable Cisco fax relay: 
[no] ccm-manager fax protocol cisco
CSCed94829
Multiple Cisco products contain vulnerabilities in the processing of IPSec IKE (Internet Key 
Exchange) messages. These vulnerabilities were identified by the University of Oulu Secure 
Programming Group (OUSPG) “PROTOS” Test Suite for IPSec and can be repeatedly exploited to 
produce a denial of service.
Cisco has made free software available to address this vulnerability for affected customers. Prior to 
deploying software, customers should consult their maintenance provider or check the software for 
feature set compatibility and known issues specific to their environment.
This advisory is posted at 
CSCef84174
Symptoms: PPP forwarding may fail between two virtual access interfaces.
Conditions: This symptom is observed on a Cisco AS5850 but is not platform-dependent.
Workaround: Disable PPP multilink on the asynchronous interfaces. 
CSCeh09198
Symptoms: A Cisco gateway that has the garbage detector (a tool that is used for debugging memory 
leaks) enabled may hang indefinitely.