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Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(31)S5
CSCsc94359
Symptoms: The BGP table and CEF forwarding table may have mismatched labels for prefixes that
are learnt from a remote PE router.
Conditions: This symptom is observed on a Cisco router that functions as a PE router when an eBGP
session flap or route flap occurs on the remote PE router. A new label for the prefix is learnt from
the remote PE router, but forwarding may not be updated properly.
Workaround: There is no workaround. When the symptom has occurred, and to correct the situation,
enter the clear ip route vrf vrf-name network command on the PE router that has mismatched labels.
CSCsd11646
Symptoms: On a router that runs Multiprotocol Label Switching (MPLS), the
"%SYS-3-OVERRUN:" and "%SYS-6-BLKINFO" error messages may be generated and a
software-forced crash may occur on the router.
Conditions: This symptom is observed when you enter the show mpls ldp discovery command
under the following condition:
There are multiple LDP adjacencies configured through one interface.
The adjacencies between peers through this interface have not been fully established for some
peers.
The unestablished LDP adjacencies are coming while you enter the show mpls ldp discovery
command.
Workaround: Do not enter the show mpls ldp discovery command while multiple LDP adjacencies
are coming up. Rather, enter the show mpls ldp neighbor [detail] command while multiple LDP
adjacencies are coming up.
CSCsd12941
Symptoms: The CPU usage may remain at 99 percent for a long time when NMS polls the
ipRouteTable via the SNMP protocol.
Conditions: This symptom is observed on a Cisco router that runs Cisco IOS Release 12.0(28)S or
Release 12.0(31)S when there is a large number of routes in the routing table. The symptom may
also occur in other releases.
Workaround: Exclude the ipRouteTable from the SNMP view.
CSCsd20210
Symptoms: The PXF engine of a Cisco 10720 may crash.
Conditions: The symptom is observed when you modify an existing access control list (ACL) that
is attached to an interface.
Workaround: Do not modify an ACL that is attached to an interface. If you cannot remove the ACL
from the interface, create a new ACL and apply it to the interface.
CSCsd23189
Symptoms: The ip helper-address command does not function on a 4-port Gigabit Ethernet ISE line
card (4GE-SFP-LC).
Conditions: This symptom is observed on a Cisco 12000 series when the Gigabit Ethernet interface
is configured for VRF forwarding.
Workaround: There is no workaround.
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