After aplly the configuration, errors appeared in ACE
“jul 10 2012 19:44:21 : %ace-1-106028: warning: unknown error X while processing merged list. incomplete rule is currently applied on interface vlan120. configuration on this interface needs to be manually reverted”
“config application in progress. this command is queued to the system”
The configuration caused service break of several network components for no apparent reason. During about 10 minutes, which was not possible to perform configuration or rollback.
Here you have the explanation of the logging message:
Error Message %ACE-1-106028: String Incomplete rule is currently applied on
interface interface-name. Manual rollback to a previous access rule configuration
on this interface is needed.
Explanation Possible String values are:
•WARNING: Access rules memory exhausted while processing component
•WARNING: Unknown error while processing component
Possible values for component are
WARNING: Unknown error while processing service-policy. Incomplete rule is currently applied on interface VLAN100. Manual roll back to a previous access rule configuration on this interface is needed.
The access control list (ACL) compilation process has run out of memory, which does not allow new ACL entries to be applied to the specified interface. The ACL configuration downloaded in hardware for that interface may not be in a known state because of this failure.
Recommended Action The ACL configuration downloaded to the network processors is incomplete. Remove and recreate the affected interface to recover to a known state. If the message is "Access rules memory exhausted," either allocate more memory to that context or remove some of the access group or service policy configuration to reduce the memory usage. If the message is "Unknown error," then there may be an issue with the configuration manager or the ACL merge process.
In order to make sure about what might have happened, then it might be required to replicate the issue and then run some debugs to get more useful data and a #show tech-support
Also, there are some bugs which are also related to the syslog message which you are reporting.
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