free Trainings for cisco R&S

CTT-TAC: Link Efficiency Mechanisms à Start Here

Developing an Optimum Design for Layer 2

http://www.cisco.com/web/learning/le31/le46/cln/qlm/CCDP/arch/layer-2-design-2/player.html

Describing & Implementing Spanning Tree Tutorial:

http://www.cisco.com/E-Learning/bulk/public/ccnp/QLM_STP/player.html

Understanding VLANs and Trunks

http://www.cisco.com/web/learning/le31/le46/cln/qlm/CCNA/icnd2/understanding-vlans-and-trunks/player.html

Introducing Access Control List Operation

http://www.cisco.com/web/learning/le31/le46/cln/qlm/CCNA/icnd2/introducing-access-control-list-operation/player.html

Introducing the OSPF Protocol

http://www.cisco.com/web/learning/le31/le46/cln/qlm/CCNP/bsci/Introducing-OSPF-AUG07/player.html

Introducing EIGRP Protocol

http://www.cisco.com/E-Learning/bulk/public/ccnp/EIGRP_QLM/player.html

Introducing BGP Considerations

http://www.cisco.com/web/learning/le31/le46/cln/qlm/CCIP/bgp/introducing-bgp-confederations-2/player.html

Introducing Traffic Policing and Shaping

https://www.cisco.com/web/learning/le31/le46/cln/qlm/CCNP/ont/Introducing-Traffic-Policing-and-Shaping/player.html

Explaining WLAN Technology and Standards

http://www.cisco.com/web/learning/le31/le46/cln/qlm/CCNA_Wireless/iuwne/Emerging-WLAN-Technology-Standards-BCMSN/player.html

Class-Based Weighted Fair Queuing (CBWFQ) and Low Latency Queuing (LLQ)

https://www.cisco.com/web/learning/le31/le46/cln/qlm/CCNP/ont/CBWFQ-and-LLQ_2/player.html

Congestion Management Configuring CBWFQ and LLQ

http://www.cisco.com/web/learning/le31/le46/cln/qlm/CCVP/qos/congestion-management-configuring-cbwfq-and-llq-2/player.html

Introducing VPNs

http://www.cisco.com/E-Learning/bulk/public/cln/qlm/ccip/mpls/MPLS-QLM-Intro-to-VPNs/player.html

Configuring Small-Scale Routing Protocols Between PE and CE Routers

http://www.cisco.com/web/learning/le31/le46/cln/qlm/CCIP/mpls/configuring-small-scale-routing-protocols-2/player.html

Understanding MPLS Traffic Engineering Concepts

http://www.cisco.com/web/learning/le31/le46/cln/qlm/CCIP/mpls/understanding-mpls-te-concepts/player.html