Create a VLAN Pool and External Routed Domain

Create a VLAN pool to allocate VLANs to the firewall as you attach interfaces to the infrastructure to support the EPGs in your ACI fabric. You should use a static VLAN range for the firewall.
Additionally, you must create a physical domain to map the VLANs to the EPGs. The following procedure creates a physical domain dedicated to the firewall.
  1. Create a VLAN pool.
    1. Log in to your APIC.
    2. Select
      Fabric
      Access Policies
      Pools
      VLAN
      .
    3. Right-click
      VLAN
      and select
      Create VLAN Pool
      .
    4. Enter a descriptive
      Name
      for your VLAN pool.
    5. Select
      Dynamic Allocation
      for Allocation Mode.
    6. Click the plus (+) button to the right of
      Encap Blocks
      .
    7. Enter your VLAN range in the
      VLAN Range
      field.
    8. Select
      Static Allocation
      form the Allocation Mode drop-down.
    9. Click
      OK
      .
    10. Click
      Submit
      .
  2. Create an external routed domain.
    1. Select
      Fabric
      Access Policies
      Physical and External Domains
      External Domains
      .
    2. Right-click
      External Routed Domain
      and select
      Create Layer 3 Domain
      .
    3. Enter a descriptive
      Name
      for your physical domain.
    4. Select the VLAN pool you created in the previous procedure from the VLAN Pool list.
    5. Click
      Submit
      .

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