showdupesfromrepos=1 will let you see them all.

yum install some-specific-version-here will install that version (provided you don’t already have a newer version installed) However, yum update some-specific-version will probably not work.

ccna notes

http://www.industrialethernetu.com/ - STP, other ethernet technologies
http://learn-networking.com
http://www.cisco.com/web/learning/le3/current_exams/640-802.html
http://www.cisco.com/web/learning/le3/current_exams/640-822.html ICND1
http://www.cisco.com/web/learning/le3/current_exams/640-816.html ICND2
Multicast Overview
STP - Understanding STP, STP on Catalyst Switch example
cheap exam? - http://www.getcertify4less.com/cisco.asp

http://www.juniper.net/training/fasttrack/

GREAT - Juniper sample - forums - http://forums.juniper.net/

various info

http://cciepursuit.wordpress.com/category/training-materials/

http://www.trixbox.org/ - asterix
http://www.ethicalhacker.net/content/view/182/24/ - video cain and abel