ISC DHCP Server (non kea)

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Various options I have used

Mitel

Classless static routes

This one was interesting in how the data was formatted. You first specify the subnet, then the destination, then the router. In the examples below we describe the option as "classless-routes", but I like the "rfc3442-classless-static-routes" description better as it better defines the "standard". In the global options define the classless route option 

option classless-routes code 121 = array of unsigned integer 8;

Then in the subnet options set your classless route 

option classless-routes 24, 192, 168, 100, 192, 168, 1, 2;
  • 24, = Defines this as a /24 subnet
  • 192, 168, 100, = Defines the subnet as 192.168.100.0 (we leave off zeros)
  • 192, 168, 1, 2 = Defines the gateway

[1][2][3][4][5]

  1. ↑ https://tools.ietf.org/html/rfc3442
  2. ↑ https://ercpe.de/blog/pushing-static-routes-with-isc-dhcp-server
  3. ↑ https://gauvain.pocentek.net/docs/dhcpd-push-routes/
  4. ↑ https://tmgblog.richardhicks.com/2009/01/08/using-dhcp-to-assign-static-routes/
  5. ↑ https://forums.freebsd.org/threads/40584/
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