Thursday, October 21, 2021

Circular Dependencies Considered Harmful

A while ago my friend Nicola Modena sent me another intriguing curveball:

Imagine a CTO who has invested millions in a super-secure data center and wants to consolidate all compute workloads. If you were asked to run a BGP Route Reflector as a VM in that environment, and would like to bring OSPF or ISIS to that box to enable BGP ORR, would you use a GRE tunnel to avoid a dedicated VLAN or boring other hosts with routing protocol hello messages?

While there might be good reasons for doing that, my first knee-jerk reaction was:



source https://blog.ipspace.net/2021/10/circular-dependencies-considered-harmful.html?utm_source=atom_feed

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