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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)S
Workaround: There is no workaround.
Further Problem Description: The fix for this caveat determines whether the RAM parity errors are
real or false.
CSCsa55048
Symptoms: The content of the CEF table may be incorrect, causing less than optimal traffic
conditions.
Conditions: This symptom is observed when a static route is configured in one VRF and exported
with an export map into another VRF and when this static route is added on two separate PE routers.
Workaround: Do not configure the static router on both PE routers. If this is not an option, there is
no workaround.
CSCsa56032
Symptoms: Packets are dropped on a CE router in an MPLS VPN network.
Conditions: This symptom is observed when a connected Cisco 10720 that functions as the PE router
shows a “bad ip checksum” counter in the output of the show hardware pxf cpu statistics interface
interface detail command for its Parallel Express Forwarding engine. The PE router has the mpls
ldp explicit-null command configured and has both input and output service policies.
Workaround: Remove the mpls ldp explicit-null command from the PE router.
CSCsa56142
Symptoms: Entering the no export map VRF configuration mode command has no effect.
Conditions: This symptom is observed on a Cisco router that is configured for RPR+ or SSO when
the you take the following steps:
1. You enter the no export map VRF configuration mode command on the active RP.
2. You enter the write memory command.
3. You initiate an RPR+ or SSO switchover.
After these steps, the export map is still configured on the new active RP, while it should no longer
be present.
Workaround: Manually remove the export map from the new active RP.
CSCsa56415
Symptoms: A router may pause indefinitely or reload unexpectedly.
Conditions: This symptom is observed while deleting or recreating policing access control lists
(ACLs) or shaping ACLs via a script.
Workaround: Update the access control list (ACL) rather than delete it.
CSCsa59002
Symptoms: IP fragments with a User Datagram Protocol (UDP) protocol identifier may be
improperly denied on an Engine 3 line card that has an outbound access control list (ACL) that
denies specific UDP ports.
Conditions: This symptom is observed only for outbound ACLs on an Engine 3 line card on a
Cisco 12000 series. The following is an example of an ACL statement for which the symptom may
occur:
access-list 100 deny udp any any eq 0 <<< this line may accidently deny IP fragments
for UDP access-list 100 permit ip any any
Workaround: Use the following ACL instead of the above-mentioned example:
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