Performance Tables

http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf
http://www.cisco.com/web/partners/downloads/765/tools/quickreference/switchperformance.pdf
http://www.cisco.com/web/partners/downloads/765/tools/quickreference/vpn_performance_eng.pdf

CRC Errors

Cisco definition:
http://www.cisco.com/en/US/docs/internetworking/troubleshooting/guide/tr1904.html

CRC: Indicates that the cyclic redundancy checksum generated by the originating LAN station or far-end device does not match the checksum calculated from the data received. On a LAN, this usually indicates noise or transmission problems on the LAN interface or the LAN bus itself. A high number of CRCs is usually the result of collisions or a station transmitting bad data.or 

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