What is the difference and connection between MSAP and MSTP?

We can also understand from the literal that MSAP tends to be connected, while MSTP tends to be transmitted. Among them, MSAP is the enhancement and integration of MSTP, and there is no major difference in technical conditions.
The main MSTP device of the MSTP link connects two-layer switches (Extended ports) to the Ethernet port, and then one pair to the user end through the optical transceiver. MSAP integrates branch MSTP devices, L2 switches, optical transceiver (data center end), and uplink main SDH or MSTP devices through MSAP devices. The carrier data center resources are greatly integrated at the data center end. For users, the link does not pass through the switch, which reduces the possibility of port mirroring and improves the link security.
MSAP has gradually been accepted by the domestic banking industry. For example, ICBC requires that all its business links use MSAP links.
 
 
Bare Optical Fiber service: it refers to the use of optical fiber as the transmission media between the local terminal and the user or within the user. In the broadband network construction, the distance between the three kilometers is generally connected by optical fiber.

Bare Optical Fiber leasing services are provided for special users or other carriers within the man to meet their own backbone network needs. Bare optical fiber connections can carry high-speed broadband of 10 Mbps, 100 Mbps and Mbps, the company ensures response within 2 hours during line maintenance. It is mainly applicable to commercial group users and smart community infrastructure.

 

Business features

Long Transmission Distance: the optical fiber connection distance can reach 70 kilometers.

Fast transmission: Optical Fiber supports high-speed bandwidth of 10 Mbps, 100 Mbps, and Mbps.

Low Loss: Because the manufacturing purity of the optical fiber medium is extremely high, the loss of the optical fiber is extremely low. In this way, the number of trunk stations can be reduced in the communication line, improving the communication quality.

Strong anti-interference ability: Because the optical fiber is non-metallic media, the optical fiber is used as the conducting medium without electromagnetic interference, which is beyond the reach of other cables.
 
The following are common terms:
These are communication technology concepts.
Let me roughly classify them.
Function: transmission access (MSAP, MSTP, SDH, EPON, WDM, TDM, DDN)
Assurance Technology: QOS
Network: PLAN LAN WAN

MSAP: Integrated Service Access System (derived from SDH technology)
MSTP: Integrated Service Transmission System (derived from SDH technology and added Ethernet processing and other functions)
SDH: Synchronous Digital System (PDH technology evolved over. Including TDM Service Processing)
EPON: Ethernet Passive Optical Network (GPON: Gigabit passive optical network. All of them are from PON technology)
WDM: wavelength division multiplexing (DWDM: High Density Wavelength Division Multiplexing Technology)
TDM: time division multiplexing (common technical means of digital communication)
DDN: digital data network, public network ddnleased line, 2 M

QOS

PLAN: local network of a personal computer
LAN: LAN
WAN: WAN

From the perspective of network applications, the general network uses a layered structure, the lowest layer is the access layer application PDH, MSAP, PON, SDH technology; the middle layer is the aggregation layer, using MSTP technology; the top backbone layer adopts MSTP and WDM technologies.

Several confusing concepts:
MSTP and MSAP: the two concepts A and T are easy to distinguish. MSTP focuses on transmission, and MSAP focuses on

For the difference between SDH and PDH, the difference between MSTP and WDM, you can refer to the "optical network basis", there are detailed instructions, these technologies are gradually evolved over, that is, PDH---SDH---MSTP/MSAP---WDN, in addition, the PON technology is independent and is the "Last Mile" popular technology. It has many branches, including EPON and GPON.

The specific differences between different networking technologies are complicated. If you are interested, you can leave a message to discuss them.
This article is from the "network planner review materials" blog