---
title: "Vladimir Grozdanovic (@vlada) | Hashnode"
description: "Vladimir Grozdanovic (@vlada) writes on Hashnode. Read their latest articles and follow their work."
url: "https://hashnode.com/@vlada"
---

@vlada

# Vladimir Grozdanovic

@vlada · Joined June 2023

### [Rogue ONU](https://vladimirgrozdanovic.hashnode.dev/rogue-onu?utm_source=hashnode&utm_medium=feed)

Hello, everyone! In this article, I will write about rogue ONU. Let's see! Context FTTx PON networks use the P2MP (Point to Multipoint) architecture. In downstream, OLT works in broadcast mode, which means that OLT sends downstream frames to all ONUs...

4 min read · [vladimirgrozdanovic.hashnode.dev](https://vladimirgrozdanovic.hashnode.dev/rogue-onu?utm_source=hashnode&utm_medium=feed)

[Jun 24, 2023](https://hashnode.com/posts/rogue-onu/6496dbc02f636b7ffd82671c)

### [How to Upgrade OLT Firmware](https://vladimirgrozdanovic.hashnode.dev/how-to-upgrade-olt-firmware?utm_source=hashnode&utm_medium=feed)

Hello everyone! In this article, I will briefly present the process of upgrading the firmware of Huawei OLT in seven steps. Manufacturers are constantly improving their firmware, thus enabling better device operation. In some situations, the upgrade ...

2 min read · [vladimirgrozdanovic.hashnode.dev](https://vladimirgrozdanovic.hashnode.dev/how-to-upgrade-olt-firmware?utm_source=hashnode&utm_medium=feed)

[Jun 24, 2023](https://hashnode.com/posts/how-to-upgrade-olt-firmware/6496d954656c94d162da5d8c)