Vyacheslav

PCI Express ASPM

ASPM (Active-State Power Management) is used to manage the power consumption of PCI Express buses, even if the PCIe device is in use and may affect the device’s response delay.

Netplan. Adding Routes

I’ll give an example of adding routes in the Netplan configuration.

How to disable auto-update on Ubuntu 18

Sometimes on some servers it is extremely necessary to turn off automatic system updates, since services compiled from the source code for a specific kernel may not start after updating it, so I decided to write this article.

How to save IPTables rules

In this article, I will describe several options for saving IPTables rules so that they load when the operating system starts.

Solution: No /etc/rc.local file on Ubuntu 18

I once noticed that by default there is no /etc/rc.local file in Ubuntu 18, but it can be created.

How to restore BDCOM OLT configuration

Suppose you want to restore the BDCOM OLT configuration from a previously made backup.

BDCOM OLT Recovery

Once an incorrect firmware was loaded into one of the OLTs, because of this, it cyclically rebooted.

BDCOM OLT DDM SNMP OID

Once it was necessary to monitor the level of the optical signal to the BDCOM OLT P3310C and P3608-2TE, after the trunk cables of different quality could stretch in the summer, and thus we lost contact with one of the OLT, although this situation could be predicted and prevented.

VLAN Generation Script for Netplan

Once it was necessary to add several hundred VLANs without IP addresses to the Netplan configuration and in order to simplify the process, I came up with the following script:

Accel-ppp. error nl_modify: File exists

Once I noticed the following error in the /var/log/accel-ppp/accel-ppp.log: