Specifications

70
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(7)
IP Routing Protocols
• CSCdk52593
An external SPF calculation might be triggered every 35 to 40 seconds if there is an OSPF external
link-state advertisement (LSA) containing a forwarding address that OSPF has no route for and if
there is a static route to this forwarding address pointing to an OSPF enabled interface.
Workaround: Remove the static route, or prevent the unreachable forwarding address from being
included in the external LSA. To avoid the unreachable forwarding address, make sure that any
autonomous system boundary routers (ASBRs) redistributing between different OSPF domains
have the fix for CSCdi63983.
• CSCdm51483
Entering the show ip igmp group command might cause a bus error reload if an IGMP entry is
deleted during the command execution. This condition occurs intermittently. There is no
workaround.
• CSCdm67167
A Cisco 8540 Multiservice Switch Router might reload if you use a prefix list with range entries
when entering the route-map command for default origination.
Workaround: Use an access-list rather than a prefix list when entering the route-map command for
default origination, or avoid using range entries in a prefix list.
• CSCdm70876
A router with IP Protocol Independent Multicast (PIM) enabled might reload when you enter the
no ip sdr command. This condition occurs under the following conditions:
– The subject router is the Internet Group Management Protocol (IGMP) querier.
– There are a large number of external IGMP reporters.
– Session Directory Protocol (SDR) is the last group locally joined at the subject router’s subject
interface.
– You enter the no ip sdr command shortly after entering the no ip pim command.
There is no workaround.
ISO CLNS
• CSCdm46511
A Cisco router using Connectionless Network Service (CLNS) over X.25 encapsulation might
reload and exhibit the following error message:
%SYS-3-INVMEMINT: Invalid memory action (free) at interrupt level
-Traceback= ........ ........ ........ ........ ........ ........ ........
%SYS-3-INVMEMINT: Invalid memory action (malloc) at interrupt level
-Traceback= ........ ........ ........ ........ ........ ........ ........
%SYS-2-MALLOCFAIL: Memory allocation of 48 bytes failed from 0x........, pool Processor,
alignment 0 -Process= “{interrupt level}”, ipl=3
-Traceback= ........ ........ ........ ........ ........ ........ ........
Workaround: Turn off the generation of CLNS error protocol data units (PDUs) on all interfaces by
entering the no clns send-erpdu command. In addition, you should investigate and resolve any
X.25 encapsulation problems.