Примечания к выпуску для Cisco Cisco ACE Application Control Engine Module

The ACE30 running ACE software version A4(1.0) or later releases and installed in a Catalyst 6500 
series switch running Cisco IOS release 12.2(33)SXI4 or later releases support the Virtual Switching 
System (VSS). VSS is a system virtualization technology that allows the pooling of multiple Catalyst 
6500 switches into a single virtual switch for increased operational efficiency by simplifying the 
network. Inter-chassis Supervisor switchover (SSO) boosts non-stop communication. For more 
information about VSS, see the Cisco IOS Version 12.2(33)SXI4 Configuration Guide. 

Note the following ACE module support for Route Health Injection (RHI) with the A5(1.x) software 
releases:

With software release A5(1.2), the ACE module operating with the Catalyst 6500 series switch 
supervisor engine supports both IPv6 and IPv4 routes for Route Health Injection (RHI) with Cisco 
IOS release 12.2(33)SXJ2 or later releases. 

With software releases A5(1.0) and A5(1.1), the ACE module operating with the Catalyst 6500 
series switch or Cisco 7600 series router supervisor engine supports only IPv4 routes for Route 
Health Injection (RHI) with Cisco IOS release 12.2(33)SXI4 or later releases. RHI for IPv6 routes 
is not supported at this time. You will not encounter this issue with RHI for IPv4 routes. See 
CSCtr14599, CSCtr24875, CSCtr33704 in this release note for additional A5(1.0)-related 
information on this issue.

The ACE operating considerations are as follows:

Starting with software version A4(1.0), the default connection inactivity timeout settings for the 
ACE have changed to the following values:

ICMP—2 seconds

TCP—3600 seconds (1 hour)

HTTP/SSL—300 seconds

UDP—10 seconds 

The default HTTP and SSL ports (80 and 443) now have a default inactivity timeout of 300 seconds.

Starting with software version A4(1.0), it is no longer necessary to configure a resource class in the 
Admin context to allocate resources for stickiness. You can still allocate sticky resources if you 
wish, but skipping this step will not affect sticky functionality.

In a redundant configuration, dynamic incremental sync is a form of config sync that copies 
configuration changes that you make on the active ACE to the standby ACE when the two ACEs are 
running the same version of software and when both ACEs are up. When you upgrade from one 
major release of ACE software to another major release (for example, from A2(3.0) to A4(1.0) or 
later, bulk sync, dynamic incremental sync, and connection replication are automatically disabled 
only while the active ACE is running software version A4(1.0) or later and the standby ACE is 
running software version A2(3.0). See