Key terms
This page provides important terms that apply to Cloud Router.
Review these terms to better understand how Cloud Router works.
For more information, see the Cloud Router overview
.
Border Gateway Protocol (BGP) terms
The following terminology applies to the Border Gateway Protocol (BGP)
,
which Cloud VPN and Cloud Interconnect use for dynamic routing.
Border Gateway Protocol (BGP)
An exterior gateway routing protocol standardized by the Internet Engineering
Task Force (IETF) in RFC 1722
.
BGP automatically exchanges routing and reachability information among autonomous
systems on the internet. Your device is BGP-capable if it can perform BGP
routing, which means that you can enable the BGP protocol on it and assign it a
BGP IP address and an autonomous system number. To determine if your
device supports BGP, see the vendor information for your device or contact your device's vendor.
autonomous system (AS)
A collection of connected IP routing prefixes under the control of a single
administrative entity or domain that presents a common routing policy to the
internet, such as an internet service provider (ISP), a large company,
or a university.
autonomous system number (ASN)
A unique identifier allocated to each autonomous system that uses BGP routing.
For more information, see RFC 7300
.
MD5 authentication
A method of BGP peer authentication that uses the MD5 message-digest algorithm. When you
use this approach, BGP peers must use the same authentication key, or a connection cannot be
established between them. Later, every segment routed between the peers is verified. For
more information about MD5 authentication, see RFC 2385
. To
find out whether your device supports MD5 authentication, see the vendor information for the
device or contact the vendor. To get support with using Cloud Router MD5 authentication,
see Support
.
Google Cloud terms
The following terminology applies to Google Cloud and its features.
Google Cloud
Google Cloud is a suite of public cloud computing services offered by Google.
For more information, see Google Cloud products
.
project ID
The ID of your Google Cloud project. A project contains networking
resources such as networks, subnets, and Cloud VPN gateways as described
in the VPC network overview
. For a
description of the difference between project name
, project ID
, and project
number
, see Identifying projects
.
You can view the project ID in the Google Cloud console
.