Specifications

1392
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S
Conditions: These symptoms are observed on a Cisco 10000 series router that has a heavy load
(10,000 PPP over Ethernet [PPPoE] PPP terminated aggregation [PTA] sessions with 6000 PPPoA
sessions and 6000 active L2TP tunnels). Under these load conditions, when the 10,000 PTA sessions
are cleared, the router stays at 100 percent CPU utilization for approximately 10 minutes.
Workaround: There is no workaround.
• CSCec02935
Symptoms: A Cisco router that has Parallel Express Forwarding (PXF) enabled does not function
after it reloads.
Conditions: This symptom is observed on a Cisco 10720 that has PXF enabled and that applies the
weighted random early detection (WRED) configuration to multiple interfaces.
Workaround: Remove the WRED configuration on the interfaces.
• CSCec03392
Symptoms: Tracebacks may be observed when a 6-port OC-3 Packet over SONET (POS) line card
is configured with the encapsulation frame-relay interface configuration command.
Conditions: This symptom is observed on a Cisco 10000 series router.
Workaround: There is no workaround.
• CSCec03782
Symptoms: A memory allocation failure may occur on compiled access control list (ACL) tables.
There may be continued attempts to recompile the ACLs that fail.
Conditions: This symptom is observed when compiled ACLs are enabled by entering the access-list
compiled global configuration command, and the total number of ACL entries is relatively large
(over 1500 lines). Random or constantly changing traffic patterns may cause the compiled ACL
tables to grow to the point at which memory fragmentation causes the memory allocation failure.
Workaround: Disable and then reenable the compiled ACLs by entering the no access-list compiled
global configuration command followed by the access-list compiled global configuration
command.
Alternate Workaround: Completely disable the compiled ACLs.
Second Alternate Workaround: ACLs may sometimes be rearranged to make the list shorter or less
complex. This will reduce the memory requirements. Large ACLs used for Border Gateway Protocol
(BGP) route prefixes may be converted to use a prefix list configuration instead.
• CSCec03896
Symptoms: Large packets may not be fragmented when both Frame Relay fragmentation (FRF.12)
and a service policy are enabled on a channelized interface.
Conditions: This symptom is observed when the service policy is an output service policy that is
configured for Class-Based Weighted Fair Queueing (CBWFQ)/Low Latency Queueing (LLQ) or
fair queueing.
Workaround: There is no workaround. (Removing the service policy is not an acceptable
workaround.)