Prefix Set#

Routing Policies → PSPrefix Sets

The PrefixSet resource is used to check whether a route belongs to a logical group of prefixes. It is used in the match criteria of a routing Policy to take an action on an imported or exported route, such as preventing the route from being advertised, adding an internal Tag, or modifying its BGP Communities.

Each PrefixSet contains prefix entries. Each entry consists of an IP subnet and, optionally, a prefix-length range for matching more-specific routes.

Example 1: matching all point-to-point subnets#

The following PrefixSet matches any IPv4 /30 or /31 subnet:

apiVersion: routingpolicies.eda.nokia.com/v1
kind: PrefixSet
metadata:
  name: point-to-points
  namespace: eda
spec:
  prefixes:
    - endRange: 31
      prefix: 0.0.0.0/0
      startRange: 30

Example 2: matching all routes to private IP ranges#

The following PrefixSet matches any route in the private IPv4 address space defined in RFC 1918.

apiVersion: routingpolicies.eda.nokia.com/v1
kind: PrefixSet
metadata:
  namespace: eda
  name: private-ip-subnets
spec:
  prefixes:
    - prefix: 10.0.0.0/8
      startRange: 8
      endRange: 32
    - prefix: 172.16.0.0/12
      startRange: 12
      endRange: 32
    - prefix: 192.168.0.0/16
      startRange: 16
      endRange: 32

Example 3: matching the exact route to a subnet#

The following PrefixSet matches the route to a particular subnet. It does not match routes with shorter or longer prefix lengths.

apiVersion: routingpolicies.eda.nokia.com/v1
kind: PrefixSet
metadata:
  namespace: eda
  name: management-subnet
spec:
  prefixes:
    - prefix: 10.10.10.0/24
      exact: true

Dependencies#

This resource does not have any dependencies.

Referenced resources#

This resource does not reference any other resource.

Examples#

apiVersion: routingpolicies.eda.nokia.com/v1
kind: PrefixSet
metadata:
  namespace: eda
  name: private-ip-subnets
spec:
  prefixes:
    - prefix: 10.0.0.0/8
      startRange: 8
      endRange: 32
    - prefix: 172.16.0.0/12
      startRange: 12
      endRange: 32
    - prefix: 192.168.0.0/16
      startRange: 16
      endRange: 32

cat << 'EOF' | kubectl apply -f -
apiVersion: routingpolicies.eda.nokia.com/v1
kind: PrefixSet
metadata:
  namespace: eda
  name: private-ip-subnets
spec:
  prefixes:
    - prefix: 10.0.0.0/8
      startRange: 8
      endRange: 32
    - prefix: 172.16.0.0/12
      startRange: 12
      endRange: 32
    - prefix: 192.168.0.0/16
      startRange: 16
      endRange: 32
EOF

Custom Resource Definition#

To browse the Custom Resource Definition go to crd.eda.dev.