Huawei Transport Network

Optical Fibers and Optical Modules

Optical fiber transmission is a kind of optical waveguide made of glass or other materials. The basic principle of light transmission in an optical fiber is total reflection. When light is incident from a light-density medium (with a relatively high refractive index) to a light sparse medium (with a relatively...

What is DCN?

Hello friends, do you know what DCN is? Let's see it. Data center networks are the infrastructure of data center services, requiring computer systems, storage systems, communications systems, communication connections, and management and monitoring systems. Enterprises or organizations can store, manage, and advertise information in data centers. The CE series switches...

Cross-connect capacity of the OptiX OSN 3500

This time, I will share with you a case about the Cross-connect capacity of the OptiX OSN 3500 Different cross-connect boards have different cross-connect capacities. lists the cross-connect boards and the corresponding cross-connect capacities supported by the OptiX OSN equipment.   Board Higher Order Cross-Connect Capacity Lower Order Cross-Connect Capacity Access Capacity of a Single Subrack Remarks N1GXCSA 40...

What is dispersion?

Hello, everyone! This post shares your knowledge about dispersion. I hope you like it! Chromatic Dispersion (CD) A form of dispersion where optical pulses are spread because different wavelengths are transmitted at different speeds in optical fibers and the periods for different wavelengths to traverse the same distance are different. Polarization Mode Dispersion...

Optix OSN 500 node is isolated

Issue Description Alarm Information We can not login on the NE after node had been configured. Handling Process 1. checked the current alarms on the optical level on the neighbors. The optical level was ok. 2. connect through Navigator on the one P.Victoriei node, checked NE configuration and collect the "oplog" 3. Checked in U2000 the...

How to Install SLQ4 board on slot 1 to slot 4 in OSN 3500

Issue Description SLQ4 board is hardly fully utilize in slot 1 to slot 4 in OSN 3500 although the slot capacity can support until 5G. NG-SDH manual: When the cross-connect capacity is 80 Gbit/s or 200 Gbit/s(S/I XCS), for the board housed in any of slots 1–4 and 15–16, two optical interfaces can be configured. For the board housed in any...

The EGS4 single board feature prevents LACP protocol packets from being transparently transmitted

Problem Description The link aggregation function is activated between two switches in a certain office. One port uses the dedicated line service configured by EGS4 and EGS2 of OSN3500, and the other port uses optical fiber to connect directly. When the switch starts manual aggregation (without LACP protocol), the service...

MA5608T – Hardening how to harden our GPON configuration in a way that flooding (multicast, broadcast, icmp, dhcp etc.) from GPON to Network/Backbone could not happen

Issue Description MA5608T – Hardening how to harden our GPON configuration in a way that flooding (multicast, broadcast, icmp, dhcp etc.) from GPON to Network/Backbone could not happen Customer had the issue that IPv6 DHCP requests from one of their customers flooded their network. Customer is connected with a ONT Huawei...