Datasheet

283
Release Notes for Cisco IOS Release 12.1E on the Catalyst 6500 and Cisco 7600 Supervisor Engine and MSFC
OL-2310-11
Caveats
• After a system reset, the Layer 2 global aging timer value is reset to the default value of 300 seconds
even though the startup configuration has the correct values.
Workaround: Reconfigure the Layer 2 aging timer after a reset. This problem is resolved in
Release 12.1(11b)E. (CSCdv21825)
• Jumbo frame support is incompatible with the IS-IS routing protocol. Leave the MTU size at the
default value on any interface where IS-IS provides routing. This problem is resolved in
Release 12.1(11b)E. (CSCdu09773, CSCdu48660)
• The ciscoFlashDeviceInitTime CISCO-FLASH-MIB object does not return the correct device
initialization (insertion or removal) time stamp for the flash devices on a redundant supervisor
engine. If you use applications that depend on ciscoFlashDeviceInitTime, take care not to remove a
redundant supervisor engine or a Flash PC card from slave-slot0 when the applications are
performing flash file operations. This problem is resolved in Release 12.1(11b)E. (CSCdp98597)
• Gigabit Ethernet ports might drop packets. The show interfaces command shows the dropped
packets by displaying an incrementing overrun count. (CSCdy46165)
Note CSCdy46165 is not observed with later releases.
Resolved Caveats in Release 12.1(8b)E20
• Cisco IOS may permit arbitrary code execution after exploitation of a heap-based buffer overflow
vulnerability. Cisco has included additional integrity checks in its software, as further described
below, that are intended to reduce the likelihood of arbitrary code execution.
Cisco has made free software available that includes the additional integrity checks for affected
customers.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20051102-timers.shtml.
This problem is resolved in Release 12.1(8b)E20. (CSCei61732)
• Receipt of a Border Gateway Protocol (BGP) Autonomous System (AS) path with a length that is
equal to or greater than 255 might reset the BGP session. This problem is resolved in
Release 12.1(8b)E20. (CSCeh13489)
Resolved Caveats in Release 12.1(8b)E19
• When fragmenting MPLS traffic, a reload might occur after display of a “SYS-2-GETBUF”
message. This problem is resolved in Release 12.1(8b)E19. (CSCeb16876)
• Receiving CDP packets with a host name that is 256 or more characters long might cause a memory
leak in the CDP process. This problem is resolved in Release 12.1(8b)E19. (CSCin67568)
• With certain configurations, a reload might occur when you enter the show cdp entry * protocol
command. This problem is resolved in Release 12.1(8b)E19. (CSCed40563)
• Many memory allocation failure (MALLOCFAIL) messages might 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
This problem is resolved in Release 12.1(8b)E19. (CSCdz32659)