Specifications

72
Release Notes for Cisco IOS Release 12.0 S
78-7130-11 Rev. B0
Caveats
• CSCdr77472
When an online insertion and removal (OIR) is performed for a Switch Fabric Card (SFC) or Clock
and Scheduler Card (CSC) for a Cisco 12000 series Gigabit Switch Router (GSR), the
OLD-CISCO-CHASSIS-MIB and ENTITY-MIB do not reflect this OIR event, and a card that has
been removed still appears in both MIBs. There is no workaround.
• CSCdr80686
When a rate-limiting feature (for example, committed access rate (CAR)) or a QoS feature (for
example, access-control list (ACL)) is enabled on an interface of an Engine 0 or Engine 1 line card
on a Cisco 12000 series Gigabit Switch Router (GSR), the receive (RX) byte and packet counters
for that interface shows the net number of byte and packets that have been admitted to the interface.
In this situation, packets that are dropped at the interface because of CAR or ACL are excluded
from the RX byte and packet counters. There is no workaround.
• CSCdr80820
A Cisco 12000 series Gigabit Switch Router (GSR) that is configured for distributed IP multicast
might exhibit the following error messages:
SLOT 8:03:43:10: %ALIGN-3-SPURIOUS: Spurious memory access made at 0x402EB90C reading
0x0
SLOT 8:03:43:10: %ALIGN-3-TRACE: -Traceback= 402EB90C 402E779C 402E9AC4 402E9BA8
402E9388 4009B02C 4009B018 00000000
SLOT 8:03:43:10: %ALIGN-3-TRACE: -Traceback= 402EB910 402E779C 402E9AC4 402E9BA8
402E9388 4009B02C 4009B018 00000000
There is no workaround.
• CSCdr81857
If a QoS service-policy is configured on a channelized interface on a PA-MC-T/E1 or PA-MC-T/E3
port adapter, entering the microcode reload global configuration command under heavy traffic
might result in a failure to forward packets for the interface.
Workaround: Remove the service-policy before entering the microcode reload command, and then
reapply the policy.
• CSCdr83067
If the clear counters EXEC command is entered from a Secure Shell (SSH) connection on a router
with E1/T1 controllers, a "SYS-3-CPUHOG" error message might be exhibited. This condition
occurs when the clear counters command fails on more than one E1/T1 controller with a
"POT1E1-3-MBOXSEND" error.
Workaround: Clear each E1/T1 controller individually.
• CSCdr83141
Under certain circumstances, configuration on an ATM permanent virtual connection (PVC) might
fail with the following error message:
ATM hardware failed cannot update vc
If Operation, Administration, and Maintenance (OAM) is also configured, the router might reload
after the error.
Workaround: Do not enter the show policy interface global configuration command.
• CSCdr88949
The performance rate after traffic shaping on four-port OC-3 and single-port OC-12 line cards on
Engine 0 may degrade if distributed traffic shaping (DTS) is configured. There is no workaround.