
434
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(33)S2
Conditions: This issue is sporadic in nature and is sometimes seen with QoS configurations although
QoS is not the cause of the issue. The issue is due to an extra interrupt, which is confusing the driver
if it expires before the FIFO reaches the low point. For example, if the FIFO goes full but is filled
with large packets, then it is possible that the no traffic timer will expire before the tx packets have
emptied. It is a communication issue between the hardware and the driver code.
Workaround: There is no workaround.
• CSCsq45502
Symptom: Serials that are part of MLPPP/MFR remain in a down state.
Conditions: This symptom is observed when T1 controllers remain down.
Workaround: There is no workaround.
• CSCsq49823
Symptoms: MDFS may get disabled in a scaled mVPN environment that has many global mroutes.
Once disabled, it may keep on changing between the “active” and “disabled” states. Linecard CPU
utilization may also go high.
Conditions: This symptom is observed with a Cisco IOS Release 12.0(32)S10 image.
Workaround: There is no workaround.
• CSCsq52048
Symptoms: Router crashed while running the show vpdn tunnel all command.
Conditions: When there are thousands of L2TP tunnels coming up, going down, running the show
vpdn tunnel all command may result in a crash.
Workaround: There is no workaround.
• CSCsq55258
Symptoms: After a router reloads, sometimes the configuration for the gigE and POS OC12 SPA is
lost from the running configuration.
Conditions: This symptom is observed when the router is reloaded.
Workaround: There is no workaround.
• CSCsq58341
Symptoms: If both L2 and L3 services co-exist on the same interface, you can no longer configure
urpf on the L3 subinterface after the fix for CSCsl09772. After the router reloads, the urpf command
will be erased from the L3 subinterface. You have to use the workaround to reapply the urpf
command.
Conditions: This symptom is observed when both L2 and L3 services are configured on the same
interface.
Workaround: Do the following:
1. Remove the L2 connection.
2. Add urpf on the L3 subinterface.
3. Re-add the L2 connection.
• CSCsq62703
Symptoms: Intermediate System-to-Intermediate System (IS-IS) tries to access invalid memory
address and may cause router to stop working.
Conditions: Occurs when a switch over happens and standby router becomes active.
Kommentare zu diesen Handbüchern