Literature on backbone networks?

Question

Computer networks

Good day!
Prompt, please, what literature can be read on global backbone networks? SDH, WDH, PDN are empty words for me so far ... I have an idea about ethernet, I would like to expand my knowledge.

Answer 1

they are now all ethtrent 10-100 gb + there can be mpls
sdh and wdn, pdn for me, too, empty words
dwdm nothing else

Answer 2

At one time he worked at VimpelCom. Asked the same questions. Searched for a long time without success. Here are links from my bookmarks of that time:
kunegin.narod.ru/ref1/sdh/
www.olifer.co.uk/articles/kakustSDH/kakustSDH.htm
also recommend books:
SDH Synchronous Digital Networks. Slepov N.N.
Fundamentals of SDH. Khmelev K.F.

Answer 3

What level are you? Construction - in fact, the organization of the physical level, or operational (channel and above)?

Answer 4

Exploitation if possible.