as i known the subscriber sessions limit at 32k per NPU. A9K-24X10GE-SE have 8 NPU // 8X32 = 256k so, If i have ASR-9912 and Add 3*A9K-24X10GE-SE can i reach to 768K sessions?, if not, why?   

Hi All... how can I get CRC Error from interfaces router per interface show interface xxx ! 5574 input errors, 3734 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort I´m using the OID 1.3.6.1.4.1.9.2.2.1.1.12.xxx for 7609 platform to get CRC Error, but, ...