I noticed once in one common network jumps in broadcast traffic, I was able to detect naturally quickly, since I had previously set up monitoring via graphs and triggers using Zabbix. I looked at the graphs of broadcast traffic from the ports of the main switch, from here it was clear where he started to go, and so we determined the chain to the client switch and port. In the Zabbix monitoring system, it is convenient to configure triggers that trigger when the limit of broadcast traffic is exceeded and report this on the screen, email to the administrator, etc.
Continue reading “How to catch broadcast flood on D-Link switches”Author Archives: Vyacheslav
Triggers in MySQL
MySQL triggers are procedures that fire when certain events occur, such as inserting, deleting, changing a string.
Continue reading “Triggers in MySQL”Configuring Foxgate S6208
On the test I will configure the Foxgate S6208-S1 (R2.0) switch.
Continue reading “Configuring Foxgate S6208”Configuring Link Aggregation on HP 5800
I will give an example of aggregation of two links into one on the HP 5800, in order to increase throughput. 1 Gbit/s + 1Gbit/s = 2Gbit/s. In the test on VLAN 400 without a tag, the Internet comes, and on a VLAN with tags other services.
Continue reading “Configuring Link Aggregation on HP 5800”Hard reset LG L Bello D335
First, I will describe how to reset the settings through the phone menu:
Continue reading “Hard reset LG L Bello D335”Backup to Yandex disk
I will give an example of a script for creating backup copies to Yandex drive.
Continue reading “Backup to Yandex disk”Backing up the BDCOM P3310 configuration
I wrote a script for automatic backup of the BDCOM P3310C-2AC EPON configuration.
Continue reading “Backing up the BDCOM P3310 configuration”cPanel. Solving the Failed to find user “” from expanded string
Once on the same server as cPanel, after changing the settings in the WHM menu “Server Configuration” – “Settings”, email stopped working, I found the following error in the logs:
Continue reading “cPanel. Solving the Failed to find user “” from expanded string”How to configure BDCOM P3310
Configured the next EPON OLT BDCOM P3310B-2AC and P3310C-2AC.
Continue reading “How to configure BDCOM P3310”How to solve Cpanel::MailAuth: cphulk blocked login for user to access service ‘mail’
I noticed somehow that mail from Cpanel does not open through the Web Roundcube, SquirrelMail, Horde, and also you can’t connect to mail from PHP scripts.
Continue reading “How to solve Cpanel::MailAuth: cphulk blocked login for user to access service ‘mail’”