
749
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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