Networking
-
Troubleshooting VMware Workstation Network connectivity
Typically, I use VMware Workstation every day running work VMs and performing other testing. I also troubleshoot VMware Workstation for other users as well. From time to time, I have seen issues with VMware Workstation network connectivity either in Bridged…
-
Configure Dell Nseries switch stack
A quick little how to post on creating a stack between Dell Nseries switches. For the purposes of this post, the stack was created using (2) Dell Nseries 4032F 10G switches. There is just a small amount of configuration that…
-
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…
-
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…
-
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…
-
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…
-
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…
-
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…
-
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…
-
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 –…
