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NA remember - Coggle Diagram
NA remember
SDN
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intent bassd networking
Simply put, administrators can send a request to tell the network what outcome they want (their intent) instead of needing to code and execute individual tasks manually
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day 1
cable
fibre
micro & macrobend
2.Macrobend
A macrobend refers to the specified minimum bending radius. The cable manufacturer should specify the minimum bending radius.
When it is installed, particularly in buildings, fiber cable must be bent around corners. The installer must not exceed the specified minimum bending radius by making a still sharper bend than the specification calls for.
We might expect a typical bending radius of a fiber optic cable to be between 10 cm (4 inch) and 30 cm (11 inch), depending to a certain degree on the fiber count in the cable. Bending a fiber optic cable tighter than the specified bending radius can cause damage, even break the fiber carried in the cable. It can also cause a dramatic increase in fiber attenuation
Microbend-induced loss is a function of mode-field diameter, cable design, and cable construction. Losses due to microbend-induced attenuation consistently decrease with mode-field diameter.
A microbend
is a fiber imperfection. Microbends cause an increase in cable loss. This loss can result in an excessively large loss in excess of 100 dB/km in some cases. A major cause of this loss occurs during cable manufacture.This happen when the fiber is pressed against a surface that is not perfectly smooth.
Core: This is the light transmission area of the fiber, either glass or plastic. The larger the core, the more light that will be transmitted into the fiber.
Cladding: The function of the cladding is to provide a lower refractive index at the core interface in order to cause reflection within the core so that light waves are transmitted through the fiber.
Coating: Coatings are usually multi-layers of plastics applied to preserve fiber strength, absorb shock and provide extra fiber protection. These buffer coatings are available from 250 microns to 900 microns
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conenctor
sc
Designation for an optical connector featuring a 2.5mm physically contacting ferrule with a push-pull mating design. . This type of optical fiber connector is identified by the square cross-section of its plastic housing. Some people call this "snap and click" or "stick and click" because you press it into a device until you hear the click.
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MT-RJ
A small form factor fiber connector that features a high-density design and RJ45-type locking mechanism. From AMP / Siecor (now Corning Cable Systems).
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evolution of device mgmt
library
configuration data, documentation, help data, message templates, pre-written code and subroutines, classes, values or type specifications.
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diff betw put and post
PUT method is called when you have to modify a single resource while POST method is called when you have to add a
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