Specifications

Release Notes for Cisco IOS Release 12.0 S

78-7130-11 Rev. B0

Caveats

• CSCds09570

A Cisco 12000 Gigabit Switch Router (GSR) line card might reload if input MAC accounting is

configured on a Gigabit Ethernet (GE) port on a 3-port GE line card. There is no workaround.

• CSCds11405

When encapsulation Frame Relay is enabled on a Packet-over-SONET (POS) interface with

multiple subinterfaces, the following error message may be seen in the log:

SLOT 5:21:43:50: %LC-3-OUTINFO: Adj/midb(MDS 224.0.0.2): incorrect output_info=0

-Traceback= 40318D38 40368518 403643AC 403666C4 403667B0 40365F88 4009C074 40090 Slot

5 is where the OC3 is doing frame relay encapsulation.

There is no workaround.

• CSCds12065

A Cisco 12008 Gigabit Switch Router (GSR) that is running the gsr-k4p-mz image in Cisco IOS

Release 12.0(11)S may display the following error message without any debug enabled:

%GRP-3-IFCON: TOO MANY QUEUED MESSAGES

There is no workaround.

• CSCds12078

A Cisco 7200 series router with a NPE-200 Network Processing Engine and a PA-2FEISL port

adapter might experience spurious memory access while Cisco Express Forwarding (CEF) is

enabled.

Workaround: Disable CEF.

• CSCds13541

Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN) traffic may be dropped in

a Provider core network that has MPLS traffic engineering tunnels configured. This situation occurs

when the dropped traffic follows a path through the core network that traverses an MPLS traffic

engineering tunnel interface on which IP Label Switching has been configured. This situation only

occurs on Cisco routers that are running Cisco IOS Release 12.0 S and acting as MPLS Traffic

Engineering (TE) head end routers that are carrying packets that are already labeled, such as MPLS

VPN traffic.

Workaround: After a traffic engineering tunnel interface comes up on a Provider core router, enter

the following command sequence:

configure terminal

interface Tunnel tunnel-number

no tag-switching ip

tag-switching ip

• CSCds16875

Traffic might fail to be forwarded into Multiprotocol Label Switching (MPLS) tunnels after the

tunnel has been dynamically rerouted. There is the possibility that after the tunnel has been rerouted

to a different interface, probably because of a change in the network topology, that traffic might be

lost when forwarded to the tunnel.

Workaround: Shutdown the tunnel interface by entering the shutdown command and then bring up

the interface a few seconds later by entering the no shutdown command.