Autonomous system number: the identifier of a BGP routing domain. In VCF, every NSX Tier-0 or VRF gateway peers with the physical fabric over eBGP using its own private ASN, which stops BGP loop prevention discarding its routes; an internet-facing gateway uses a public ASN instead.
Also called autonomous system number.
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Terms in this definition
- ASN
Short for autonomous system number, which identifies a BGP routing domain. Azure VPN gateways use 65515 by default, a reserved value on-premises peers must avoid; Defender EASM also discovers ASNs as an internet asset type.
- BGP
Dynamic routing protocol used with both ExpressRoute and VPN connections. On ExpressRoute private peering it is the only way to exchange routes, including a 0.0.0.0/0 default route for forced tunnelling.
- Geographic
A Traffic Manager routing method that picks the endpoint according to where the user is located geographically.
- Domain
A way of grouping workspaces by area of the business, in support of a data mesh approach. Items take on their workspace's domain, letting you filter the OneLake catalog by it, and certain tenant settings can be passed to domain admins; domains have no effect on access permissions.
- VMware Cloud Foundation
Broadcom's platform for private cloud. It unifies management of NSX, vSAN, vSphere, VCF Automation and VCF Operations as one fleet; VVF, by contrast, lacks automation and cloud management.
- NSX
Software that handles networking and security across VCF, covering firewalling, load balancing, NAT, VPCs, overlay segments and Tier-0/1 gateways.
- VRF
Separate routing tables kept inside a single router. In NSX these take the form of Tier-0 VRF gateways, each attached to a parent Tier-0.
- Physical
Describes the concrete, real-world parts that put a logical architecture into effect.