Polling Elasticsearch Queries through SNMP
We’ve got a technical problem that sounds simple to fix – what traffic levels are we seeing from a specific set of sources? This traffic passes through a firewall (Sonicwall) appliance and even as...
D/Line Radio Blog
VXLAN Puppet Module
If you’ve done any work with OpenStack or VMware NSX, you’ve likely come across VXLAN. It’s an encapsulation protocol that allows you to wrap layer 2 traffic in unicast UDP packets for traversal over...
MPLS in a Full Mesh Core with Dual Homed CE Routers
We’re making a fairly substantial change to our core network in the New Year. It’s seeing us move from a flat, L3 routed network to an MPLS fabric. This option was chosen over VRF...
Single vs Multi Channel Architectures for WiFi
Almost every area of IT has its holy wars. Whether it’s processors and AMD vs Intel vs ARM, GPU with AMD vs NVidia or even operating systems with Linux, Windows and even BSD in...
L3 MPLS VPN on Brocade Ironware
This might seem a bit of an odd post to be making. Not just because the MLXe router we’re using will probably be painted a very fetching shade of purple in future editions, but...
Moving Zones Between Views in Infoblox
It turns out that moving zones between views in Infoblox is a surprisingly hard thing to do. The challenge ended up on my desk after we made the decision to operate a separate external...
Compression, Loudness and Coverage – A Trade Off
It was always touted as the thing you wanted to be – the loudest on the dial. It was even said on occasion that it could help improve your coverage in rough patches. This...
Modern Protocol Problems with an Old Firewall
Legacy systems are part of any mature technical environment. While I was a combination of both impressed and shocked when recently presented with a SunOS 5.7 box (OS dated 1998!) I had to assist...
Reading Cart Chunk with PowerShell
Look at the audio files in any professional radio playout system. They’ll likely be linear WAVE files with the associated metadata stored in the cart chunk format. With this information it’s usually enough to...
NATing (well, PATing) Specific Address Ranges on a Fortigate
It’s a simple little thing I struggled to find any real documentation on but can entirely be done on Fortigate firewalls. The challenge was simple – take a network of made of globally routable...
First Steps into OpenDaylight with Brocade
It’s not often that catch-up meetings with vendors lead to anything particularly exciting but a recent one I attended with Brocade was a little different. While Brocade have had Openflow support for a very...
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