Cradlepoint's acquisition of Pertino boosted its SD-WAN presence.
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In part1, we discussed some of the design decisions around uplink modes for VMware and a customer scenario I was working through recently. In this post, we’ll explore multi-chassis link aggregation (MLAG) in some detail and how active-active network fabrics challenge some of the assumptions made.
Disclaimer: What I’m going to describe is based on network switches running Cumulus Linux and specifically some down-in-the-weeds details on this particular MLAG implementation. That said, most of the concepts apply to similar network technologies (VPC, other MLAG implementations, stacking, virtual-chassis, etc.) as they operate in very similar ways. But YMMV.
I originally set out to write this as a single article, but to explain the nuances it quickly spiraled beyond that. So I decided to split it up into a few parts.
• Part1: Design choices – Which NIC teaming mode to select
• Part2: How MLAG interacts with the host (This page)
Part3: “Ships in the night” – Sharing state between host and upstream network
If the host is connected to two redundant switches (which these days is all but assumed), then MLAG (and equivalent solutions) is a commonly deployed option. In simple terms, Continue reading
Seriously.
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It also uses Masergy's security technology with machine learning capabilities.