Specifications

108
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(4)
Basic System Services
• CSCdj84652
The maximum transmission unit (MTU) size of interfaces that use the encryption service adapter
(ESA) is 16 Kbytes.
Workaround: Configure the MTU to be no larger than 16K (16384) bytes on all interfaces that use
ESA.
• CSCdk28278
Currently generic traffic shaping and Frame Relay traffic shaping are not supported with turbo
(optimum/Cisco Express Forwarding [CEF]) switching modes.
Workaround: Disable these turbo switching modes to make traffic shaping work over the interface.
This workaround allows turbo switching modes to coexist with traffic shaping.
• CSCdk48207
A Cisco 1601 router that is configured to do async MPPP dial-in might reload. This is an indication
of memory corruption. The condition occurs when running Cisco IOS Release 11.2(15a)P. Router,
DRAM, and Flash memory replacements did not prevent the router from reloading. There is no
workaround.
• CSCdk58782
A Cisco 7200 series router that is connected to a Catalyst 5000 series switch sends a CDP packet
on TrBRF VLAN with the Bridge Protocol Data Unit (BPDU) bit set when the subinterface is shut
down. This situation can cause a loop if the Catalyst 5000 series switch is connected to other
switches. (See caveat CSCdk57646.) There is no workaround.
• CSCdk66827
When a Cisco MC3810 multiservice access concentrator is configured for CCS cross-connect, calls
might not get connected after a period of time. There is no workaround.
• CSCdk66863
A Cisco router might reload in “net_periodic.” There is no workaround.
• CSCdk81949
The entire cpmDS0UsageTable (mib oid .1.3.6.1.4.1.9.10.19.1.1.1.1.5) is not being populated
correctly when the following configuration is used:
Controller T1 0 clock source line primary cas-group 0 timeslots 1-24 type
fxs-groud-start
Controller T1 1 clock source line secondary cas-group 0 timeslots 1-24 type
fxs-groud-start
Among the 24 channels, only entries for the first channel of each of the two DS-1s are populated.
There is no workaround.
• CSCdk84420
The write core command does not dump the I/O memory on Cisco 3600 series routers. There is no
workaround.
• CSCdk93279
A Cisco AS5800 access server with TACACS+ might restart with the following error:
System was restarted by bus error at PC 0x60446D10, address 0x1C
This occurs when the Cisco AS5800 is near T3 capacity, with users dialed in, and when the
TACACS+ server that the access server is pointing to has to be changed. There is no workaround.