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Phil's Blog

The thoughts and ramblings of an Engineer

Author: Phil Lavin

I’m an Engineer, working for Vonage. I write about stuff that interests me - primarily Networks, Software Engineering, VoIP and Electronics. It exists in the hope that someone may learn from my thoughts and ramblings. I'm on GitHub! I'm also currently fairly active on Twitter and LinkedIn.
Juniper MX 80
24 May, 2019 Blog

Juniper JunOS: Difference between rib-groups and instance-import

Both rib-groups and instance-import allow you to selectively (or non-selectively) import routes into one VRF from another. I won’t go

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Juniper QFX 5110
12 April, 2019 Blog

Juniper MX204 – Enabling 100G ports

This was far more difficult than it should be so it’s worth writing down… First, check the Juniper Port Checker to

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Juniper QFX 5110
20 March, 2019 Blog

JunOS error: In routing-instance default-switch interface ae3.0 has vlan and vxlan mixed which is not supported

You might see this error when using VXLAN on Juniper kit after you set an interface to be a member

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9 February, 2018 Blog

Installing Debian 9 (Stable) on Dell Gen 14 servers with Perc H740P RAID Controllers

Dell’s 14th Generation servers have the option of shipping with Perc H740P RAID controllers. These are stonkingly good, as compared

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31 December, 2017 Blog

Proxmox: Shrinking disk of an LVM backed container

First, shut down the container and ensure it’s not running. List out the LVM logical volumes: Choose the disk you

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29 December, 2017 Blog

Proxmox Containers: Manage network interfaces file yourself

Proxmox will manage the network interfaces file (/etc/network/interfaces on Debian) for you, on containers. This is sometimes annoying – for

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28 December, 2017 Blog

Hetzner: Routing IPv6 through a firewall such as pfSense

Hetzner offer very well specified physical servers at extremely low prices. I’ve used them for many years and they’ve proved

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Postfix Logo
26 December, 2017 Blog

Postfix: Blocking senders by reverse DNS hostname

Postfix has an option for smtpd_recipient_restrictions called check_client_access. According to the Postfix manual, this: You can use it to block specific domains, as

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Outlook Logo
19 August, 2017 Blog

Fixed: Outlook 2016 not synchronizing Inbox from IMAP after upgrade from 2013

After upgrading from Outlook 2013 to 2016, I found that new e-mails were not being downloaded from IMAP into the

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6 August, 2017 Blog

Fixed: Plex with Sonos – Unable to play – Unable to connect to Plex

This problem bugged me for a long time. I could list the contents of the Plex library in the Sonos

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