Functions of interfaces ALMO1, ALMO2, ALMO3, and ALMO4

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Output and cascading interfaces (ALMO1 and ALMO2) generally transmit housekeeping alarm outputs to a PDF to display alarm information in a centralized manner. The interfaces can also be configured for other outputs.
The definitions for the pins of the ALM01 and ALM02 interfaces are the same, and the two interfaces are used for output/cascading, respectively. The definitions for the pins of the ALM03 and ALM04 interfaces are the same, and the two interfaces are used for output/cascading, respectively. For example, when the ALMO1 interface is used to output alarm signals, the ALMO2 interface can be used as an alarm cascading interface to connect to the ALMO1 interface in another subrack.
The OptiX OSN 8800 provides eight alarm outputs. The first three channels are defined as critical alarm, major alarm, and minor alarm by default, and the remaining five channels are reserved for future use. Alarm outputs can be cascaded.

Other related questions:
Electrical feature specifications of the ALMO1 and ALMO2 interfaces
Output and cascading interfaces (ALMO1 and ALMO2) generally transmit housekeeping alarm outputs to a PDF to display alarm information in a centralized manner. The interfaces can also be configured for other outputs. Alarm signals are output based on the open/closed status of the relay on the related board. When the relay is open, the resistance measured at the ALMO interface is less than 1 ohm. When the relay is closed, the resistance is infinite.

Functions of an interface module
An interface module has the following functions: The interface module interconnects a storage device and an application server.

What is the function of the tunnel interface (GRE interface)
The tunnel interface (GRE interface) encapsulates and decapsulates data packets using GRE. The tunnel interface that sends encapsulated packets is called the tunnel source interface, and the one that receives these packets on the peer end is called the tunnel destination interface. Generally, the local WAN interface is used as the tunnel source interface, and the peer WAN interface is used as the tunnel destination interface.

USM interface function of TE40
TE series endpoints can connect to a USB device through the USB port, such as a removable hard disk, USB flash drive, or data card. The endpoints can be configured through the configuration file in the USB device.

What is the function of interface priorities
The port priority command sets the interface priorities, that is, specifies the default priorities of incoming packets on the interface. AR series routers send packets to different queues based on the interface priority. By default, the AR interface does not trust packet priorities. Packets enter queues according to the interface priority.

If all packets enter queues according to the interface priority, all packets on an interface enter the same queue. Differentiated services cannot be provided. Using the trust command, you can specify the priority to be mapped for packets, that is, search for a priority mapping to the packet priority in the priority mapping table. -The AR120&AR150&AR160&AR200&AR500 series and AR1200 series send packets to different interface queues based on the mapped 802.1p priorities, and use the queue scheduling to provide services for packets with different priorities. -On AR2200 series, --From V200R001C00, the device sends packets to different interface queues based on the mapped 802.1p priorities, and use the queue scheduling to provide services for packets with different priorities. --From V200R003C00, the AR2204 or AR2220E sends packets to different interface queues based on the mapped 802.1p priorities, and use the queue scheduling to provide services for packets with different priorities. While the AR2201, AR2202, AR2220, AR2240C and AR2240 send packets to different interface queues based on the mapped local priorities, and use the queue scheduling to provide services for packets with different priorities. -The AR3200&AR3600 series send packets to different interface queues based on the mapped local priorities, and use the queue scheduling to provide services for packets with different priorities.


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