Hello, welcome HongTelecom
Huawei USG9580 Heat Dissipation System Details
As a world leading Huawei networking products supplier, Hong Telecom Equipment Service LTD(HongTelecom) keeps regular stock of Huawei router and switch and all cards at very good price, also HongTelecom ship to worldwide with very fast delivery.

For related articles, visit the HongTelecom Blog and HongTelecom WordPress.

For real pictures of related product, visit the HongTelecom Gallery.

To buy related product, visit the HongTelecom Online Shop.

Introduction to the USG9000

At present, the USG9000 can work in three modes: routed mode, transparent mode, and composite mode.
  • routing mode In routing mode, the USG9000 uses the layer 3 for external connections, and all interfaces must be assigned with IP addresses. When the USG9000 is located between the internal network and the external network, you need to configure the interfaces, through which the USG9000 is connected with the internal network and the external network, with IP addresses on different network segments and re-plan the network topology. In this case, the USG9000 serves as a router. As shown in Figure 2-1, the USG9000 is connected with the internal network through an interface in the Trust zone, while it is connected with the external network through an interface in the Untrust zone. Note that the interface in Trust zone and the interface in Untrust zone reside in different two subnets.
    Figure 2-1  Networking in routing mode
    When working in routing mode, the USG9000 can complete ACL packet filtering. However, network topology needs to be changed. For example, internal network users need to change their gateways and routers’ routing configurations need to be changed.
  • transparent mode In transparent mode, the USG9000 uses the layer 2 for external connections, and none of the interfaces can be assigned with IP addresses. In this case, the USG9000 is transparent to users in subnets and routers. That is, users do not feel the existence of the USG9000. As shown in Figure 2-2, the USG9000 is connected with the internal network through interfaces in the Trust zone, while it is connected with the external network through interfaces in the Untrust zone. Note that the internal network and the external network must reside in the same subnet.
    Figure 2-2  Networking in transparent mode
    If the USG9000 works in transparent mode, you do not need to change network topology. In transparent mode, you only need to place the USG9000 in the network like placing a bridge without need of modifying any existing configuration. Similar to the routing mode, IP packets also need to be filtered and checked in transparent mode, and internal users can be protected by the USG9000.
  • composite mode If there are both interfaces working in routing mode (such interfaces have IP addresses) and interfaces working in transparent mode (such interfaces have no IP address) in the USG9000, the USG9000 is working in composite mode. Composite mode is applied in the case of dual-system hot backup with transparent mode. The interface on which VRRP is enabled needs to be configured with an IP address, and other interfaces do not. Figure 2-3 shows a typical networking in composite mode.
    Figure 2-3  Networking in composite mode
    Master and backup USG9000s are connected with the internal network through interfaces in the Trust zone, while they are connected with the external network through interfaces in the Untrust zone. In addition, master and backup USG9000s connect each other and perform hot standby through VRRP. Note that the internal network and the external network must reside in the same subnet.

    System Air Channel

    This section describes the USG9580’s system air channel. The USG9580 has three air channels. The upper and lower chassis have separate air channels that draw air from the front and exhausts air from the rear. The air filters are installed over the air intake vents. Each filter has a curved face, large area, and small windage resistance. These features help to improve heat dissipation efficiency. Air filters on the upper and lower chassis are identical. The air channel in the SFU slot area is located on the left of the chassis. The depth of the air filter is the same as that of an SFU and the height of the air filter is four times the height of the an SFU. The USG9580 is divided into an upper chassis and a lower chassis; it draws in air from the front and exhausts air from the rear. The air intake vent on the upper chassis is located above the board area on the front chassis; the air exhaust vent is located above the board area on the rear chassis. The lower chassis and the upper chassis are opposites. The upper chassis and the lower chassis also have separate heat dissipation systems. The middle area of the USG9580 is for SFU slots. The air intake vent of this area is located on the left of the chassis. Two upper SFU slots in the area draw in air from the left. When flowing to the right, the air joins the air from the upper chassis. Two lower SFU slots in the area also draw in air from the left. When flowing to the right, the air joins the air from the lower chassis. Figure 1 shows the air flow in the USG9580.
    Figure 1 Air flow in the USG9580 
Close Menu
×
×

Cart