Region properties

Every region maintains a set of properties that are shared by all intents within that region. Region properties lists these properties.

Table 1. Region properties
Property

Description

Name The text string that identifies this fabric in the UI.
Description The text string that is displayed in the Additional information panel for a region.
Location The physical location represented by the region.
System IP Pool Pool name: set as "default" and cannot be changed.
IP Type: set as "IPv4" and cannot be changed.

IP Blocks: Contains one or more CIDR blocks representing IP addresses that can be assigned to the management interfaces of devices managed by the system. Enter these blocks using CIDR notation; for example, 1.1.1.1/24.

If you need more IP addresses for devices in your fabrics than the current CIDR blocks support, you can modify the region to add more CIDR blocks to the System IP pool.

Inter Switch Link IP Pool Pool name: set as "default" and cannot be changed.
IP Type: set as "IPv4" and cannot be changed.
IP Blocks: Contains one or more CIDR blocks representing IP addresses that can be assigned to inter-switch links between devices in real (not Digital Sandbox) fabric intents throughout this region. Enter these blocks using CIDR notation. For example: 1.1.1.1/24.
Note: Each link within a fabric intent requires two IP addresses from this block; one for each endpoint.

From the set of links that are possible with the IP addresses in the specified CIDR block, two are reserved for use by the system to represent the network IP address and the broadcast address. These are unavailable for inter-switch links. For example, a CIDR block ending in /26 that can support up to 32 links will in fact support up to 30 links within the fabric intents in this region.

If you create a fabric intent that requires more links than are available with the current pool, fabric generation fails. The event log for the fabric intent indicates that there are insufficient IP addresses for the required links, and shows the number of addresses required versus the number available.

Should you need more IP addresses available to your fabrics than the current CIDR blocks support, you can modify the region to add more CIDR blocks and thereby support additional links.

Out of Band Management IP Pool Pool name: set as "default" and cannot be changed.
IP Type: set as "IPv4" and cannot be changed.
IP Blocks: Contains one or more CIDR blocks representing IP addresses that can be assigned to the primary loopback interface of a device. A router ID can then be derived from the same set of allocated IP addresses. Enter these blocks using CIDR notation; for example: 1.1.1.1/24.
Note: From the set of links that are possible with the IP addresses in the specified CIDR block, two are reserved for use by the system to represent the network IP address and the broadcast address. These are unavailable for the out-of-band management IP pool.

Should you need more links in your fabrics than the CIDR blocks you specified here support, you can modify the region to add more CIDR blocks to this pool.

BGP ASN Numbers First: the lowest permissible value in a range of Autonomous System Numbers (ASNs) that uniquely identify a network with a unique routing policy. The ASN must be unique so that IP address blocks appear to originate from a unique location to which BGP can determine a route.

Default value: 400

Last: the highest permissible value in a range of ASNs, as described above.

Default value: 500

Digital Sandbox DHCP Configuration Digital Sandbox DHCP CIDR: the CIDR block use to assign IP addresses for the SR Linux container nodes within the Fabric Services System Digital Sandbox. For more information about the Digital Sandbox, see Digital Sandbox.
Route Target Global Index: an underlay service parameter set when workloads are created, which ensures that services created as part of a workload are unique within a region and across multiple regions.
EVPN Profile Control Plane: the control plane type to use throughout the region. Supported values are:
  • None: no EVPN peering
  • eBGP
  • iBGP

Default value: none

Protocol authentication BGP: Enabled or Disabled

Enabling BGP protocol authentication causes the Fabric Services System to create a unique MD5 authentication key. This encrypted key is required to authenticate communication between eBGP peers.

No user action is required to create the authentication key or to incorporate eBGP authentication requiring this key into subsequent node configurations. These actions are handled internally by the system.