Specifications

Release Notes for Cisco IOS Release 12.0 S

78-7130-11 Rev. B0

Caveats

• 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 erro 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.

• CSCdr91303

When attaching and removing a QoS service-policy under a heavy traffic load on a channelized

interface on a MC-T/E1 or MC-T/E3 port adapter, packets might stop forwarding out of the

interface.

Workaround: Enter the microcode reload global configuration command.

• CSCdr91482

The Cisco 12000 series Gigabit Switch Router (GSR) will incorrectly increment the input drops

counter because of an accounting issue. This action might not correctly reflect packets dropped

because of congestion. This sitution might be seen on all GSR interfaces, but has no effect on

service or functionality of the interfaces. There is no workaround.

• CSCdr95090

When a policy map is attached to an interface on a Cisco 7200 series router, the router experiences

spurious memory access at the function hqf_get_policymap(). There is no workaround.

Wide-Area Networking

• CSCdr43764

Extracting 64-bit Simple Network Management Protocol (SNMP) counters for the Frame Relay

interface on a Packet-over-SONET (POS) interface might not work. This condition applies to both

the relevant IF-MIB counters and the Cisco-specific 2 x 32-bit counters in

CISCO-C12000-IF-HC-COUNTERS-MIB and relates only to the Frame Relay 64-pit permanent

virtual connection (PVC) counts when a Frame Relay encapsulated interface is added to a POS

interface. The main POS interface counters are not affected and continue to function properly.

Workaround: Upgrade to an image that contains this patch.