Specifications

1217
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S
– An Engine 4 plus GE linecard is present in the path before the packets reach the Engine 4 plus
POS line card.
Workaround: There is no workaround.
• CSCed22224
Symptoms: On a Cisco 10000 series with a 4-Port Channelized STM-1/OC-3 or 1-Port Channelized
OC-12/STM-4 line card, when you enter the shutdown command followed by the no shutdown
command on the SONET controller, the serial interfaces that are configured under this controller
stay down until you enter the no shutdown command on each individual serial interface.
Conditions: This symptom is observed when the line card has au-4-tug3 controllers configured. The
au-3 mapping appears to work correctly.
Workaround: There is no workaround. Bring up the serial interfaces by entering the no shutdown
command on each individual serial interface.
Further Problem Description: The symptom also occurs when you enter the shutdown command on
the au-4-tug3 controller.
• CSCed22358
Symptoms: A Cisco 12000 series that is running Cisco IOS Release 12.0(26)S with an Engine 3
POS line card (OC48X/POS-SR-SC), and possibly other Engine 3 line cards, may forward packets
out of an incorrect interface. This behavior can been seen by looking at the hardware CEF entry on
this input line card:
execute-on slot x show ip hardware-cef a.b.c.d
where a.b.c.d is the destination ip
The output will look similar to this, where the CEF lookup is null:
LC-Slot0#sh ip hardware-cef a.b.c.d
Leaf FCR 2 0x784C6FC0 found 2 deep
alpha ip loadbalance: 0x78198D00 - lbl not equal. cef lookup NULL
After clearing the route:
LC-Slot0#sh ip hardware-cef "a.b.c.d"
Leaf FCR 4 0x784C6FC0 found 2 deep
Fast Adjacency:
alpha adjacency: 0x701E8280
[0-7] oi 0x4019100 oq 4000 in 15 ab 0 hl 20 gp 11 tl 0 loq BC01 15/0 mtu 4470
packets 1750013440 bytes 776867999767
Output Queue / Local Output Queue Bundle:
[0-7] output queue 0x4000 local output queue 0xBC01
This problem can lead to packets being dropped due to the creation of a loop and the TTL expiring
on the packets.
Conditions: This symptom is observed on a Cisco 12000 series that is running Cisco IOS
Release 12.0(26)S with an Engine 3 POS line card (OC48X/POS-SR-SC).
Workaround: Change the routing so the packets do not enter via the Engine 3 line card or use a
different Engine line card. Clearing the route resolves the problem only temporarily.
• CSCed22582
Symptoms: The cbQosPoliceStatsTable MIB objects of the QOS-MIB may be missing.
Conditions: This problem affects QoS statistics that are defined in the
CISCO-CLASS-BASED-QOS-MIB
Workaround: There is no workaround.