Specifications

1145
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S2
Conditions: This symptom is observed on a serial interface of a PA-MC-8TE1+ when there is a
channel-group configuration for the interface.
Workaround: Remove the channel-group configuration for the interface.
• CSCin79436
Symptoms: A Cisco 12000 series does not fragment IP traffic while switching the traffic into the
MPLS core even when the size of the incoming IP packets exceeds the IP MTU of the egress
interface. This situation causes the traffic to be dropped on the next hop router.
Conditions: This symptom is observed in Cisco IOS Release 12.0(26)S or a later release when all of
the following conditions are present:
– The traffic leaves through an egress interface of an Engine-3 line card (on the MPLS core side).
– The imposed label stack contains only explicit null labels.
– The size of the incoming IP packets exceeds the IP MTU of the egress interface.
Workaround: Ensure that the IP MTU of the egress interface exceeds the maximum size of the
incoming IP packets.
• CSCin79899
Symptoms: When error recovery is performed on a 3-port Gigabit Ethernet (GE) line card that has
port 0 in the shutdown state, the 3-port GE line card stop passing traffic on all ports.
Conditions: This symptom is observed on a Cisco 12410 that runs Cisco IOS Release 12.0(23)S or
a later release and that is configured with an Engine 2 3-port line card.
Workaround: Reload the 3-port GE line card and leave port 0 in the up/down state.
• CSCin82862
Symptoms: Multicast traffic is not switched from a multilink interface on a Cisco 7500 series that
is configured for distributed multilink PPP (MLP).
Conditions: This symptom is observed when the router is reloaded or when the multilink interface
flaps.
Workaround: Enter the clear ip mds linecard * command on the Route/Switch Processor (RSP).
• CSCin83445
Symptoms: Incoming multicast traffic on a distributed MLP link is process-switched.
Conditions: This symptom is observed on a Cisco 7500 series that is configured for distributed MLP
after the router has been reloaded.
Workaround: Enter the shutdown interface configuration command followed by the no shutdown
interface configuration command on the affected multilink interface.
• CSCsa46154
Symptoms: A Route Processor (RP) failover occurred.
Conditions: This symptom occurred while using the show route-map command in one session and
removing several route-maps in rapid succession in another session.
Workaround: Do not use the show route-map command while removing route-maps in a concurrent
vty session.
• CSCuk52952
Symptoms: An Engine 3 ATM line card may continuously crash.