Specifications

1090
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S4
• CSCeh20156
Symptoms: When the working link flaps with two to three second intervals on CHOC12 Internet
Services Engine (ISE) line cards that are configured for automatic protection switching (APS), some
T1 links may remain down.
Conditions: This symptom is observed on a Cisco 12000 series.
Workaround: Reload he line card(s).
• CSCeh23047
Symptoms: After a manual SSO switchover, traffic in the tag switching-to-IP switching direction
between an egress 1-port 10-Gigabit Ethernet Engine 4+ line card and an ingress 4-port Gigabit
Ethernet ISE line card does not recover.
Conditions: This symptom is observed on a Cisco 12000 series that runs the gsr-p-mz image of
Cisco IOS Release 12.0(31)S. However, the symptom is platform-independent and may also occur
on other platforms that function in a similar configuration and that run other releases.
Workaround: Reload microcode onto the 4-port Gigabit Ethernet ISE line card.
• CSCeh25739
Symptoms: High jitter occurs on a 1-port channelized OC-12/STM-4 (DS1/E1) ISE line card when
when many (168) MLP interfaces are congested with real-time and normal data traffic.
Conditions: This symptom is observed on a Cisco 12000 series.
Workaround: There is no workaround.
• CSCeh35422
Symptoms: A PRP switchover causes “%SYS-2-NOTQ” and “%SYS-2-LINKED” error messages
and some tracebacks to be generated on a 1-port channelized OC-12c/STM-4 (DS1/E1) ISE line
card, the serial interfaces of the line card flap, and eventually the line card resets.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(28)S or Release 12.0(30)S, that is configured with two PRPs, and that has the
redundancy mode set to SSO.
Workaround: There is no workaround.
• CSCeh39904
Symptoms: After removing a large number of Frame Relay subinterfaces, the following log is
displayed:
SYS-3-CPUHOG: Task ran for 38160 msec (3/2), process = MDFS LC Process, PC = 41129150
Conditions: This symptom is observed on a Cisco 12000 series that is configured for Multicast VPN.
Workaround: There is no workaround.
• CSCeh46072
Symptoms: When the following sequence if performed on a Cisco router, multiple subinterfaces
receive the same ifIndex number, causing incorrect CEF entries:
1. Create a serial subinterface (channelized).
2. Delete the same subinterface.
3. Create an ATM subinterface.
4. Re-create the serial subinterface.
Conditions: This symptom is observed on a Cisco 12000 series when the above-mentioned or a
similar sequence of adding and deleting subinterfaces is performed.