How To Organize Cables In Rack Cabinet?

In our daily work, due to personnel changes and network adjustments ，our cabinets will become very messy over time. The placement of equipment in the cabinet, the introduction of power cords, and the management of network cables and communication lines are very troublesome. This increases the difficulty of management and also affects network quality.
So how to organize the rack cabinet to make it orderly?

Wiring skills

How to properly route the cabinet cables is largely determined during the cabinet structure design stage.The wiring of general cabinets has the following skills:

(1) Use a cable tray. the cabling rack of the cabinet is a 1U or 1SU sheet metal piece with multiple teeth. The length of the teeth varies depending on the size of the network equipment and the turning radius of the cable used.

(2) Use a wire bridge. The so-called line bridge is a radius-shaped structure that protrudes like a small bridge in the cabinet. It can be understood as the protruding place on the cabinet board where the cable can be tied. Generally, the cable bridge will appear in the following places: the compartment partition of the cabinet, the column, the square hole strip for the installation of the equipment panel, etc.

(3) Use a spool. This is the same as the cabling rack, which is generally used for optical fiber arrangement of communication equipment.

(4)Flexible use of incoming spools. The so-called incoming spool refers to the place where the wires are routed on the sub-cabin partition when the wires need to be routed in different sub-cabins. Generally, the incoming spool appears in two compartments that need to be isolated from each other, such as between the equipment compartment and the battery compartment.

(5)Use cable ties and labels. This is also mentioned in the basic method above. It is very important. The cable tie is simple and flexible to use, and the label makes it easy to identify after wiring, reducing the difficulty of maintenance.

Wiring specifications between rack cabinet

The same IDC, the same specification rack, the wiring method should be the same overall, which is convenient for daily operation and maintenance. The core network equipment, internal network access equipment, management network access equipment and other network equipment of different roles should be neatly wired. Optical fibers and network cables should not block the air inlet and outlet of network equipment, and it is not appropriate to reserve too long at the bottom of the rack. Optical fibers and network cables The label should be clear. The way of inserting optical fibers and network cables on the front of the network equipment should be as consistent as possible. Ensure that the power cables and network cables at the back of the network device are neat and tidy, and the strong and weak cables are separated and have a sense of integrity.

1. Wiring specifications for core equipment

IDC core network equipment, especially the internal network core equipment, because there are more interconnections with TOR, so there will be more optical fibers. The optical fiber layout of the core network equipment must be neat and not interspersed horizontally and vertically. Beautiful wiring in the cabinet is one of the key points in the wiring specifications of network devices.The optical fiber layout diagram:

The optical fibers are routed vertically from the left or right side of the device, and the place where it is laid cannot block the air inlet and outlet of the network device. The optical fibers are bound with Velcro straps at intervals (note: white fixing straps cannot be used), but they should not be tied too tightly and the bending degree should not be too large. Between 100 degrees and 130 degrees, usually about 110 degrees (the same below) ), you must be able to put it freely, stick the label, try not to block the label after plugging it into the device port, and leave a certain length of space to facilitate the removal and insertion of the optical fiber.

2. Wiring specifications for Intranet access

The internal network access switch is located at the top of the rack, the internal network TOR switch 40G MPO fiber is connected to the internal network core, and the 10G-AOC cable is connected to the server. The 1G or 10G port of the ILO switch is connected to the core of the management network, and the Gigabit port is connected to the server. The two cabinets in the computer room share an intranet TOR and an ILO access switch (5m cables are used in this cabinet, cross-phase Adjacent cabinets use 8m cables), and roughly 18 servers are placed in each cabinet. Schematic diagram of optical fiber and network cable layout:

The cables laid out by the internal network access switch are organized by a cable organizer. On the cable organizer, each 4 network cables are bound with a cable tie. Each network cable is marked with a unique label, and the other end is placed in the rack. The lowering length of the optical fiber does not need to be too long, and the bending degree cannot be too large. The optical fibers that are labeled and connected to different cores should be distinguished by labels of different colors as much as possible.

3. Wiring specifications in the bridge

The interconnection cables between the network devices in the computer room need to be routed through the bridge (except in a single cabinet). The schematic diagram of fiber layout in the bridge:

4. Wiring specifications in the rack cabinet

Inside the cabinet (ordinary server cabinet) there are mainly intranet AOC cables and ILO management network cables, as well as power cables. Therefore, there will be more cables in a single cabinet, and each type of cable needs to be bundled and laid inside the cabinet. As shown below

5. Cable label specification

Core-Intranet TOR label: Because a single TOR has 4 MPO lines to connect to 4 intranet cores respectively, the label color is used to distinguish the uplink to different intranet cores, such as red, yellow, blue, and green respectively. Intranet core 1,2,3,4; the label format is uniformly used in “cabinet A~cabinet B#number” mode, such as XX machine room-02-01~XX machine room-01-08#1. According to custom, cabinet A is the core cabinet and cabinet B is the non-core cabinet.