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DHCP scopes#

The DHCP scopes category records the address ranges that a DHCP service hands out inside a network. Adding scopes makes the IP-address table visually group dynamic ranges, and feeds the In DHCP scopes / Not in DHCP scopes breakdown in the Network detail page usage panel.

Where it lives#

DHCP scopes are a category of the Network class. They show up in two places:

Both surfaces show the same data and offer the same actions.

Scope attributes#

DHCP scopes category on a Network object: the category sidebar with All categories (DHCP scopes selected) on the left, a DHCP scopes table in the centre with columns Title, IP range, and DHCP entry type, plus New entry, Delete, Columns, and Filters controls above it, and the right Widgets pane with the suite plus jump widget, Information, and History.

Every scope has these attributes:

Attribute Notes
Title Free-text name of the scope (for example Clients or Phones). Two scopes with the same range type but different titles stay in separate groups in the IP table.
IP range Start and end addresses of the scope (for example 10.0.0.1, 10.0.0.20).
DHCP entry type The role of the range, e.g. Reserved, Excluded, or Dynamic.

Add a DHCP scope#

  1. Open a Network object.
  2. Go to the DHCP scopes category (sidebar) or the DHCP scopes tab on the Network detail page.
  3. Click Add + above the table.
  4. Fill in Title, IP range, and DHCP entry type.
  5. Save.

The new scope appears in the table and the IP-addresses table groups any addresses inside the range under the scope title.

Edit or delete a scope#

  • Edit: hover the row and click the pencil in the Actions cell.
  • Delete: tick the row and click Delete above the table, then confirm.

Effect on IP usage#

The Usage details panel on the Network detail page splits IPv4 (and IPv6) addresses into:

  • Total: the size of the network.
  • In DHCP scopes: every address that falls inside any DHCP scope you created here.
  • Not in DHCP scopes: the remainder.

Adding or removing scopes immediately updates the breakdown and the donut chart.

Further readings#