Cisco Cisco Broadband Access Center for Cable 4.1 Release Notes

Cisco BAC 4.1.0.1 supports the block size between 8K to 64K for the database files and database log 
files under ZFS.

The EMIC feature is enhanced to support the implementation as specified in the CableLabs 
specification: CM-SP-MULPIv3.0-I13-100611.

The Extended CMTS MIC Configuration Setting parameter is a multi-part encoding that configures how 
the CMTS performs message integrity checking. This is used to detect unauthorized modification or 
corruption of the CM configuration file, using more advanced hashing techniques, or requiring different 
TLVs to be included in the HMAC calculation. In addition, Admin UI and DPE CLI support is provided 
for EMIC framework. The EMIC support has been tested with CMTS version IOS12.2(11)CX. 

The Cisco BAC 4.1.0.1 Licensing feature supports combining the evaluation license with the permanent 
license and vice versa for both DPE and service license.

The Berkeley DB used in the Cisco BAC 4.1.0.1 is upgraded to 5.1.19 from 4.1.25 which was used in 
Cisco BAC 4.0.1. This upgrade helps in bug fixes and out of disk space handling, and provides better 
performance, improved feature support, improved caching efficiency and faster database recovery.

Review the following information before you begin to install Cisco BAC 4.1.0.1.