IT Blog

The screen lights up on Xiaomi smartphones

I noticed one night on the Xiaomi Redmi 10 phone that the screen often lights up, while there were no sounds or vibrations.

Configuring ETP48100-B1 with Huawei OLT

In this article I will show how I connected the ETP48100-B1 power supply to Huawei MA5608T.
Huawei ETP48100-B1 is very powerful and heavier than similar models, it is 48V 50A, but from the minuses – batteries cannot be connected to it, that is, it does not have a UPS function.

Zabbix: icmpping “Ping item must have target or host interface specified”

Once I upgraded Zabbix to version 6.4 and noticed that the “Template ICMP Ping” template stopped working on new devices, it continued to work on old ones, but if you add a new device, a warning was displayed:

Zabbix. Upgrading the database to primary keys

Starting with Zabbix 6.0, primary keys are used for all tables in new installations, but since I upgraded Zabbix server to version 6.4, I had to manually update the tables after the upgrade.

Before updating, first of all, open the menu “Report” – “System Information” and make sure that the keys are not used, this will be indicated by the entry – “Database history tables use primary key – No”, if the keys are used, then this entry simply will not be.

How to add EPON ONT on MA5608T

In this article, I will show an example of adding EPON ONT on Huawei MA5608T.
I will use ONT from different manufacturers, EPON board H803EPFD for 16 ports.

Restricting access to management on Huawei S2326TP-EI

I will give an example of setting up an ACL to restrict access to Telnet, SSH, SNMP on Huawei S2300 series switches.

Setting up ETP4830 A1 with Huawei OLT

For example, I will take the ETP4830 A1 power supply at 48V 15A (there is a model for 30A) and connect it to the MA5608T so that I can monitor the percentage of battery charge, set the correct parameters for charging batteries (default 53.5V floating and 56.5V accelerated) their capacity (the default is 40Ah or 65Ah), etc.