Specifications

1279
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S4
Workaround: Run LDP in the MPLS core for all interfaces that have auto-tunnel traffic engineering
configured.
• CSCee32365
Symptoms: When a single bundle link associated with a Multilink Frame Relay (MFR) interface is
brought up, LMI exchanges over the MFR interfaces may not happen.
Conditions: This symptom is observed on a Cisco 7500 series that is configured for MFR.
Workaround: There is no workaround.
• CSCee34622
Symptoms: Neighbor adjacencies for the IS-IS, OSPF, or other routing protocol may bounce during
a Nonstop Forwarding (NSF) switchover.
Conditions: This symptom is observed when you enable a routing protocol for NSF and you enter
the external overload signalling router configuration command. The following configuration
illustrates this situation for IS-IS:
router isis area-tag nsf [cisco | ietf] external overload signalling
Workaround: Disable the external overload signalling router configuration command.
• CSCee47026
Symptoms: The ATM HA process may crash.
Conditions: This symptom is observed on a Cisco router that has VCS configured with local
switching.
Workaround: There is no workaround.
• CSCee49862
Symptoms: A Cisco 7500 series multichannel T3 port adapter (PA-MC-2T3+) may not provide a
two-second delay before bringing down the T3 controller.
Conditions: This symptom is observed when an alarm as defined in the ANSI T1.231 specification
occurs.
Workaround: There is no workaround.
• CSCee51909
Symptoms: An Engine 3 channelized (OC-48 to DS3) line card that processes traffic crashes.
Conditions: This symptom is observed when you change the MTU on the E4+ disposition line card.
Workaround: There is no workaround.
• CSCee53458
Symptoms: After you boot a Cisco 12000 series, one of the members of a link bundle that has eight
members that are configured on an Engine 2 16-port O-C3 POS line card shows up in both the active
and passive lists.
Conditions: This symptom is observed on a Cisco 12000 series that runs an interim release of
Cisco IOS Release 12.0(28)S.
Workaround: There is no workaround.
Further Problem Description: Proper functionality is not impacted by this caveat.