Specifications

1179
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S1
• CSCee73410
Symptoms: When you enter the redundancy force-switchover command, IPC messages and
tracebacks may be generated on an Engine 2 3-port GE line card.
Conditions: The symptom is observed on a Cisco 12000 series that runs Cisco IOS Release 12.0S
and that has dual PRPs.
Workaround: There is no workaround.
• CSCee74419
Symptoms: When L3 VPN routes flap, the PLU utilization on line cards in a PE router may increase
to and remain at 99 percent.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(28)S and that functions as a PE router when L3 VPN routes flap in an L3 VPN network
that has a large number of VPN routes.
Workaround: There is no workaround.
• CSCee74886
Symptoms: After you enter the microcode reload pxf command or after a PXF crash occurs,
EoMPLS packets that should be encapsulated with EoMPLS encapsulation are treated as if they are
normal IP packets, and are likely to be dropped by the router.
Conditions: This symptom is observed on a Cisco 10720 router when an SRP (sub)interface is used
as the EoMPLS backbone interface to transport EoMPLS packets to other EoMPLS PE routers and
when the (sub)interface has the xconnect destination-address vc-id encapsulation mpls command
enabled.
Workaround: Remove the xconnect destination-address vc-id encapsulation mpls command from
the (sub)interface that connects to a customer device, and reconfigure it on the (sub)interface.
• CSCee75225
Symptoms: High CPU utilization may cause interfaces to flap, and the following spurious memory
access messages may be generated:
%ALIGN-3-SPURIOUS: Spurious memory access made at 0x603C2724 reading 0x194
%ALIGN-3-TRACE: -Traceback= 603C2724 601D2888 601D40B4 00000000 00000000 00000000
00000000 00000000
Conditions: This symptom is observed on a Cisco 7500 series that runs Cisco IOS
Release 12.0(23)S when you the clear cef linecard command.
Workaround: There is no workaround.
• CSCee76306
Symptoms: A Cisco router crashes during a period of high routing protocol activity.
Conditions: This symptom is observed on a Cisco 10720 that runs Cisco IOS Release 12.0(21)SP or
a later release or Release 12.0(22)S or a later release.
The crash is most likely to occur when the router holds a large number of IPv4 prefixes in its routing
table and when there is a lot of turnover in the routing table, that is, prefixes are added and deleted
on a rapid basis.
Workaround: There is no workaround.
• CSCee76476
Symptoms: A Cisco 12000 series equipped with Engine 4 or Engine 6 line cards may crash because
of an unexpected exception to CPU vector 300 when the CISCO-CLASS-BASED-QOS-MIB is
queried via SNMP.