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This is the second part of a series of posts highlighting the best practices for customers who require highly resilient networks in Network Edge. This entry highlights how to build resilient Device Link Group (DLG) connections. For more information on Device Link Resiliency please refer to the Equinix docs page here.
Each device will build connections to the Plane to which it is connected as shown here:
The next post will cover the best practices for creating resilient EVP-LAN connections. You can read the first part of this series here.
Thank you @MasonHarris for this detailed presentation!
When you say "Local DLGs do not traverse the Equinix Fabric and aren’t susceptible to Fabric switch outages ", is there an outage scenario where VNF1 and VNF2 connected by a Local DLG would stay up, but the Local DLG would go down? In other words, does a Local DLG traverse a piece of infrastructure independent from VNF1 or VNF2?
Hi @marek_moszynski thanks for the question--i can't think of a scenario where VNF1 and VNF2 in the same metro connected via a local DLG would be up and the DLG would be down. At least in my knowledge this has never occurred. The point I was trying to make it that local DLGs (same metro) don't go out to the Fabric (Primary or Secondary) and therefore are not susceptible to the same resiliency scenarios as remote DLGs, EVP-LANs and VCs. We do get customers asking if they should build redundant local DLGs and, while we don't restrict it (and there is no charge), we don't see the benefit as the cabling between the computes is already redundant and in the same cage. I hope that clarifies please let me know if you have more questions.
crystal clear, thanks for the confirmation!
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