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Generic Systems vs. External Generic Systems

Release: Juniper Apstra 4.2
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Change Release
date_range 07-Feb-24

When to use a generic system and when to use an external generic system:

Generic System

  • For attaching compute/storage
  • Can only be connected to a single rack
  • Appears in the topology as part of a rack

External Generic System

  • For middleware devices, such as firewalls, load balancers, external routers and so on*
  • Can be connected to multiple racks
  • Appears in the topology outside of racks for easier identification

* In many cases, middleware boxes only connect to a single border leaf pair in a rack, but configuring it as an external generic system allows it to be visually separated outside of the rack. However, if there is a requirement such as connecting to an external router (MX) via BGP and you want to provide rack redundancy, then you would use an external generic system to allow this multi-rack connectivity.

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