Specifications

32
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(12)
DECnet
• CSCdr02921
A Cisco router that is running Cisco IOS Release 12.0(8) might experience an unexpected system
reload when you use the clear decnet accounting EXEC command or the no decnet accounting
interface configuration command.
This situation will only occur if DECnet accounting has been enabled on at least one interface and
DECnet traffic is being forwarded by the router at that point in time. This situation is more likely
to occur if the following error message has been logged:
%SCHED-2-EDISMSCRIT:Critical/high priority process DECnet Input may not dismiss.
-Process= “DECnet Input”, ipl= 0, pid= 74
Workaround: Do not enable DECnet accounting on any interface.
IBM Connectivity
• CSCdm78843
A Cisco router might reload if there are a large number of Native Client Interface Architecture
(NCIA) clients with heavy NCIA traffic because of a watchdog timer. There is no workaround.
• CSCdr41479
When remote source route bridging (RSRB) is configured on two Cisco 4500 series routers that are
connected by an ATM network, and RSRB is configured with an encapsulation type of Fast
Sequenced Transport (FST), some frames might not be forwarded. This situation might result in a
data-link connection (DLC) session not being established through the RSRB peers.
Workaround: Either change the RSRB encapsulation from FST to TCP, or configure data-link
switching (DLSw) as the transport.
• CSCdr49638
A Dependent Logical Unit Requester (DLUR) router with High-Performance Routing (HPR) might
log the following error messages:
%SYS-2-MALLOCFAIL: Memory allocation of 276 bytes failed from 0x60336D28, pool I/O,
alignment 32
The Systems Network Architecture (SNA) client will not be able to connect to HOST. According
to the output of the show memory EXEC command, both the processor memory and I/O memory
are reduced. There is no workaround.
IP Routing Protocols
• CSCdr11784
If you configure Protocol Independent Multicast (PIM) or Hot Standby Router Protocol (HSRP) on
an ATM-LANE interface, the CPU of the Route Switch Processor (RSP) might reach 99 percent.
This situation only occurs when Open Shortest Path First (OSPF) is enabled on more than 12
interfaces in combination with ATM-LANE. This situation does not occur on an RSP that is running
Cisco IOS Release 12.0 S or Release 11.2 GS. There is no workaround.
• CSCdr45560
A Cisco nondesignated router on a multiaccess interface creates state for (S, G) with the Olist
populated when receiving a multicast packet. This situation causes a periodic assert every three
minutes. There is no workaround.