IP Routing Protocols Commands
http://www.net130.com/technic/ciscotech/5riprout.pdf
Cisco IOS
IP
Command Reference, Volume 2 of 3:
Routing Protocols
http://www.cisco.com/c/en/us/td/docs/ios/12_2/iproute/command/reference/fiprrp_r.pdf
Cisco IOS Cisco Discovery Protocol Command Reference
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/cdp/command/cdp-cr-book.pdf