Cisco Cisco IOS Software Release 12.0 S Release Notes

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Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(26)S1
Resolved Caveats—Cisco IOS Release 12.0(26)S1
Cisco IOS Release 12.0(26)S1 is a rebuild of Cisco IOS Release 12.0(26)S. The caveats listed in this 
section are resolved in Cisco IOS Release 12.0(26)S1 but may be open in previous Cisco IOS releases. 
This section describes only severity 1 and 2 caveats.
Basic System Services
CSCea74631
Symptoms: A Route Switch Processor (RSP) that is acting as a slave may have complete packet 
switching activity interrupted for several minutes. This situation may cause the RSP to permanently 
pause.
Conditions: This symptom is observed on a Cisco 7500 series router that is running Cisco IOS 
Release 12.2(12d).
Workaround: There is no workaround. 
CSCeb22276
Symptoms: Some Simple Network Management Protocol (SNMP) packets may linger in the input 
queue while they are processed. However, the packets do drain on their own without any intervention 
from the user. This fix allows these packets to be removed from the queue more quickly.
Conditions: This symptom is observed on a device that runs Cisco IOS software and that supports 
SNMP operations. In addition, the SNMP request must contain a valid community string.
Workaround: Protect the SNMP community strings with good password management. Permit SNMP 
traffic only from trusted devices. 
CSCeb51200
Symptoms: If a switch has the nvram:ifIndex-table file in the wrong format, there is a problem at 
bootup. The following message is printed when this problem exists:
SYSTEM INIT: INSUFFICIENT MEMORY TO BOOT THE IMAGE!
Conditions: This problem is observed in Cisco IOS Release 12.1(13)EW and Release 12.1(19)EW.
Workaround: Do not create a file called ifIndex-table in NVRAM.
Note
If the nvram:ifIndex-table file is created by software (because of the snmp-server ifindex 
persist
 configuration command), there should be no problem in the format of the file. There is 
no need to delete the file if you see it and if the switch is running and booting smoothly.
CSCeb66973
Symptoms: A Cisco router or switch may reload when it attempts to read the ifIndex information 
from an NVRAM file during the bootup process.
Conditions: This symptom is observed when the NVRAM file is corrupt.
Workaround: Disable the ifIndex persistence. 
CSCec20791
Symptoms: You may not be able to copy an image to an Advanced Technology Attachment (ATA) 
disk.
Conditions: This symptom is observed on a Performance Route PRocessor (PRP) of a Cisco 12000 
series Internet router.