Networking
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How to Configure Untangle site to site VPN
In working on a DR project utilizing two Untangle virtual appliances, I had the need to setup a site to site VPN connection between the Untangle firewalls. The OpenVPN documentation is fairly decent on the Untangle site, however, the information…
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Create LACP LAG between Extreme and Enterasys switches
A late breaking project I was involved with recently with a client was adding 10G port count to an environment that had simply outgrown the number of 10G ports that were being used. Another ESXi host was being added to scale…
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Cisco Meraki MR18 install review
I was excited recently to get my hands on a Cisco Meraki MR18 and wanted to share with you all some thoughts and opinions of the product after having installed, configured, and worked with it for a few days. The…
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Stretch layer 2 with OTV
Lately, in looking at different ways to stretch layer 2 with various technologies, I have been proof of concepting various ways to do this in router labs. In a recent post Stretch VLANs across routers L2TPv3, we see how to utilize L2TPv3…
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Stretch VLANs across routers L2TPv3
Recently, I have been working a good bit with DR network connectivity and other DR DCI concerns. A typical scenario today has a virtual environment in one Site as production and another virtual environment in another site, Site B, as…
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TCP Auto-tuning slow network performance
Starting with Windows Vista, there were improvements made to the network stack including a little known feature called TCP Window Auto-tuning. The auto-tuning feature allows newer versions of Windows to be able to adjust the RWIN value automatically on the…
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Design Considerations LACP LAG
Link Aggregation Groups are multiple connections between two switches that allow the switch to aggregate links/bandwidth between them. LAG’s are typically dumb in themselves without using Link Aggregation Control Protocol, LACP, on top. In fact, for instance, a (4) link…
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Cisco VIRL 1.1.1 Upgrade
Well after running Cisco VIRL for a while it has definitely grown on me and with each release it gets better. I have been meaning to upgrade to the latest version that was announced/released just a few days ago –…
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Glasswire Windows 10 Network Monitor and Firewall
If you are looking for a great, versatile and useful network monitor and firewall for Windows 10 besides the builtin functionality provided in the box with Windows 10, meet Glasswire. Glasswire provides a really neat concept of a timeline for…
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Cisco VIRL Review
After using Cisco VIRL for a few days now, I wanted to write up a post on my thoughts and maybe even calling it a pseudo Cisco VIRL review of sorts. However, I will keep this post updated as to…
