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[Archive] How does VSYS affect routing?



Article ID: KB5289 KB Last Updated: 02 Oct 2020Version: 4.0
Points to consider when using the VSYS.
Virtual System (VSYS) configured Overlapping subnets VSYS routing table
What is the routing behavior for a VSYS?
How does VSYS affect routing?
It is important to know the following points when dealing with routing on NetScreen devices that support Virtual Systems (VSYS):
  1. NetScreen devices that support Virtual Systems (VSYS) have a global routing table
  2. Each VSYS also has its own routing table
  3. VSYS in NAT mode will NOT import routes into the global route table
  4. A VSYS in route mode will import all known routes to the global route table
  5. Overlapping subnets are not supported unless the VSYS is in NAT mode
Modification History:
2020-09-27: Archived.
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