In this post, I'll take some time to mention the books necessary to brush your concepts. For R&S, I would highly recommend the following.
1) CCIE Routing And Switching Exam Certification Guide Third Edition
2) Routing TCP/IP Volume I
3) Routing TCP/IP Volume II
4) Cisco LAN Switching
5) Cisco QoS certification Guide
6) Developing IP Multicast Networks
7) Cisco Self-Study: Implementing Cisco IPv6 Networks
1) CCIE Routing And Switching Exam Certification Guide Third Edition
2) Routing TCP/IP Volume I
3) Routing TCP/IP Volume II
4) Cisco LAN Switching
5) Cisco QoS certification Guide
6) Developing IP Multicast Networks
7) Cisco Self-Study: Implementing Cisco IPv6 Networks
I have started reading (1), I am yet to buy the rest, which I will as I complete (1).
Internetwork Expert provides a more complete recommended reading list. However, depending on your proficiency, you may choose to purchase those books covering concepts you need to understand further. I havent decided on which book I'd choose for MPLS.
The hard part ofcourse is reading, dedicating the necessary hours. It's definitely not easy preparing while having a full time job. However, if you're working in a related field you may be able to quickly absorb things (this is where your industry experience comes in handy).
Internetwork Expert provides a more complete recommended reading list. However, depending on your proficiency, you may choose to purchase those books covering concepts you need to understand further. I havent decided on which book I'd choose for MPLS.
The hard part ofcourse is reading, dedicating the necessary hours. It's definitely not easy preparing while having a full time job. However, if you're working in a related field you may be able to quickly absorb things (this is where your industry experience comes in handy).