Specifications

1395
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S
• CSCec15733
Symptoms: A Cisco router that is running IP over Multiprotocol Label Switching (MPLS) may
reload when the Label Distribution Protocol (LDP) responds to the creation of a new session.
Conditions: This symptom is observed when the router is operating under extremely stressful
conditions that cause the CPU utilization to be close to 100 percent. This situation rarely occurs.
Workaround: There is no workaround.
• CSCec16666
Symptoms: Two channel group interfaces on a 1-port multichannel STM-1 port adapter
(PA-MC-STM-1) may receive the same ifIndex. This can be observed in the following command
output:
show snmp mib ifmib ifindex serial X/X/X:0
Interface = SerialX/X/X:0, Ifindex = 496
show snmp mib ifmib ifindex serial Y/Y/Y:0
Interface = SerialY/Y/Y:0, Ifindex = 496
Conditions: This symptom is observed when some of the E1 interfaces are deleted and recreated.
Workaround: Do not delete any of the E1 interfaces.
• CSCec17262
Symptoms: In a Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN), if a router
receives an MPLS packet with an IP version 4 (IPv4) option underneath, and the MPLS packets have
two or more labels, when the router tries to untag all labels, Parallel Express Forwarding (PXF)
stops.
Conditions: This symptom is observed on a Cisco 10720 router that acts as an MPLS VPN provider
edge (PE) router.
Workaround: There is no workaround. The symptom has not been observed in a basic MPLS
network without VPN (this means there is only one label).
• CSCec18181
Symptoms: A Cisco 7200 series may reload when you enter the show pas i82543 interface
gigabitEthernet number mta privileged EXEC command.
Conditions: This symptom is observed on a Cisco 7200 series that is configured with a Network
Processing Engine G-1 (NPE-G1).
Workaround: There is no workaround.
• CSCec21012
Symptoms: After a manual switchover is performed on a dual Route Processor (RP) router that is in
Stateful Switchover (SSO) mode, a secondary RP may reload.
Conditions: This symptom is observed on a Cisco 12000 series router with an 8x OC3 ATM line card
that is running the gsr-p-mz image of Cisco IOS Release 12.0(26.1)S.
Workaround: There is no workaround.
• CSCec21999
Symptoms: A port on an OC-3 ATM line card may display an LCD alarm when the router reloads.
This alarm may bring down the controller and interface. The far end functions properly but is unable
to pass traffic because of the downed interface.