Cisco Cisco IOS Software Release 12.0 S

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Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
  Caveats
Resolved Caveats—Cisco IOS Release 12.0(33)S7
2. Apply BT QoS (parent with dummy child) on the main interface. 
3. Apply flat policy (with priority + police) on the subinterface. 
4. Remove flat policy from the subinterface.
Workaround: Apply, again, policies to the main and subinterface. Remove the BT QoS from the 
main interface first and then remove the policy from the subinterface. 
CSCti55312
Symptoms: When multilink interfaces (connected to CE device) are flapped on a Cisco 12000, the 
Cisco 12000 hardware does not set the HW adjacency correctly. It happens because LDP assigns 
imp-null instead of a real local label after multilink comes up.
Conditions: Static route pointing to multilink interfaces.
Workaround: Force LDP to assign a real local label instead of an imp-null after multilink comes up 
with shut/no shut on affected multilink interface.
Further Problem Description: Hardware CEF adjacency is NULL at ingress LC, for few static route 
prefixes going through multilink interfaces. It seems to occur when LDP does not assign a real label 
for a prefix, but this is a coincidence, not the root cause of the HW IP entry being NULL. 
CSCti88244
Symptoms: Frequent flapping of Serial interfaces (E1) that are part of an MLPPP bundle may cause 
a PLIM Cause 0 reset. After the PLIM RESET recovery, some interfaces remain in the Up/Down 
state.
Conditions: Frequent flapping of Serial links that are part of an MLPPP bundle in Cisco IOS 
Release 12.0(33)S6.
Workaround: A PLIM RESET due to cause 1 is a recovery mechanism to reset the PLIM 
provisioning ASIC from its stuck condition. For interfaces that are in the Up/Down state after the 
PLIM recovery, a shut/no shut on Serial interfaces has to be done to recover the interfaces to 
operational status. 
Resolved Caveats—Cisco IOS Release 12.0(33)S7
All the caveats listed in this section are resolved in Cisco IOS Release 12.0(33)S7. This section 
describes only severity 1, severity 2, and select severity 3 caveats.
CSCsv73754
Symptoms: A router crashes during VRF configuration. A traceback decode points to a function 
bgp_vpn_impq_add_vrfs_cfg_changes.
Conditions: The symptom is observed while unconfiguring VRFs. It is most likely to be seen when 
100 VRFs or more are unconfigured.
Workaround: There is no workaround. 
CSCsw63003
Symptoms: Memory increase occurs in “BGP Router” process due to BGP path attributes. Memory 
used by this process increase every day and so do the BGP path attributes while the number of routes 
is not increasing.