Specifications

1125
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S2
Miscellaneous
• CSCeb52181
Symptoms: A Cisco platform that accesses the “system:/vfiles/tmstats_ascii” virtual file (for
example, via “more system:/vfiles/tmstats_ascii”) may crash because of bus error.
Conditions: This symptom is observed under normal working conditions when no configuration
changes are made on a Cisco platform that runs Cisco IOS Release 12.0 S, 12.1 E, 12.2 or 12.3.
When the “system:/vfiles/tmstats_ascii” virtual file is not used, the symptom does not occur.
Workaround: There is no workaround.
• CSCed20839
Symptoms: After an interface flaps or when you enter the shutdown interface configuration
command followed by the no shutdown interface configuration command on an interface that is
configured for Hot Standby Router Protocol (HSRP), a virtual HSRP address may not respond to
pings.
Conditions: This symptom is observed on a Cisco router that is configured with a 2-port Fast
Ethernet Inter-Switch Link (ISL) port adapter (PA-2FEISL) that has at least one Fast Ethernet
interface configured for HSRP.
The symptom occurs because the Fast Ethernet interface that is configured for HSRP is not switched
to promiscuous mode when the HSRP group becomes active, preventing packets that are addressed
to the HSRP virtual MAC address from being received by the interface. The output of the show
controllers fastethernet user EXEC or privileged EXEC command displays whether the
promiscuous mode is enabled or disabled.
Reboot the router to restore the router to proper operation.
Workaround: To prevent the symptom from occurring, enter the standby use-bia interface
configuration command on the Fast Ethernet interface that is configured for HSRP.
Further Problem Description: This caveat only effects Fast Ethernet port adapters and network
modules that use the AMDP2 chipset (for example, the PA-2FEISL). When you use such a port
adapter or network module with HSRP configured and the interface goes down, HSRP does no
longer function when the interface comes back up.
• CSCed47560
Symptoms: The native Gigabit Ethernet ports of a Cisco 7200 series NPE-G1 or a Cisco 7301 may
stop forwarding traffic.
Conditions: This symptom is observed in a stress situation when bursty traffic is received.
Workaround: There is no workaround.
• CSCed79218
Symptoms: A Cisco 7200 series router with a PA-2CT3+ or PA-CT3 port adapter does not provide
the configured minimum bandwidth guarantees.
Conditions: This behavior appears to be limited to the multichannel T3 family of port adapters and
appears consistently upon the configuration of CBWFQ.
Workaround: There is no workaround.
• CSCed81317
Symptoms: When an import map is configured on a VPN Routing/Forwarding (VRF) instance, the
CE-learned routes are filtered out, preventing them from appearing in the VRF routing table.