I have a doubt and wondering if someone can help me understand this piece of modern networking as I am lacking filed experience (considering everything is supported remote) . Here goes the question:-
starting from Fiber to a router's interface , there are multiple things that come in to picture now a days and they all have different names. if someone can give me a brief description of below items , how they fall in between a fiber ------router. like how these things are inter-connected.
fiber optics
POS
SPA
SIP
DWDM
POS interface : I understand POS is packet over sonet but when we use term "POS interface" - Are they like Ethernet interface that connect fiber optical cable to a router ?
SPA : its a module that hosts interfaces but what kind of interfaces it can host ? can it host Ethernet / optical interface also ?
last Q : if I have a fiber coming down from my service provider and I have a Cisco High end router at my end - what all physical component i need to have in between and on my router for a successful physical connectivity ?
