Cisco Cisco IOS Software Release 12.2

CSCec41364

Symptoms: A Cisco IOS Network Access Server (NAS) may send incorrect port information in 
accounting records.

Conditions: This symptom is observed when performing callback without peer authentication.

Workaround: There is no workaround. 

Cisco IOS Release 12.2(19c) is a rebuild release for Cisco IOS Release 12.2(19). The caveats in this 
section are resolved in Cisco IOS Release 12.2(19c) but may be open in previous Cisco IOS releases.

The following information is provided for each caveat:

Symptoms: A description of what is observed when the caveat occurs. 

Conditions: The conditions under which the caveat has been known to occur. 

Workaround: Solutions, if available, to counteract the caveat. 

CSCdz32659

Symptoms: Many memory allocation failure (MALLOCFAIL) messages may occur for a Cisco 
Discovery Protocol (CDP) process:

%SYS-2-MALLOCFAIL: Memory allocation of -1732547824 bytes failed from x605111F0, pool 

Processor, alignment 0 -Process= "CDP Protocol", ipl= 0, pid= 42 -Traceback= 602D5DF4 

602D78A0 605111F8 60511078 6050EC88 6050E684 602D0E2C 602D0E18

Conditions: The symptom is observed on a Cisco 7513 that runs Cisco IOS Release 12.0(17)ST. The 
symptom may also occur on other Cisco 7500 series routers that run Release 12.0 S, 12.2 S, 12.3, 
or 12.3 T.

Workaround: To prevent the symptom from occurring again, disable CDP by entering the no cdp 
run global configuration command. 

CSCec25430

Symptoms: A Cisco device reloads on receipt of a corrupt CDP packet. One possible scenario is:

Reloading a faulty Cisco IP conference station 7935 or 7936 may cause a connected Cisco switch 
or router to reload. A CDP message may appear on the terminal, such as the following one:

%CDP-4-DUPLEX_MISMATCH duplex mismatch discovered on FastEthernet5/1 (not half 

duplex), with SEP00e0752447b2 port 1 (half duplex).

Conditions: This symptom is observed when an empty “version” field exists in the output of the 
show cdp entry * command for at least one entry.

Workaround: Disable CDP by entering the no cdp run global configuration command.

First Alternate Workaround: Disable CDP on the specific (sub-)interface(s) whose corresponding 
neighbor(s) has or have an empty “version” field in the output of the show cdp entry * command.

Second Alternate Workaround: Disconnect the 7935 or 7936 phone, in the case of the specific 
symptom that is described above.