Some or all of the information on this page might not apply to Trusted Cloud by S3NS.
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.
Trusted Cloud by S3NS terms
The following terminology applies to Trusted Cloud by S3NS and its features.
Trusted Cloud by S3NS
Trusted Cloud is a suite of public cloud computing services offered by Google.
For more information, see
Trusted Cloud products.
project ID
The ID of your Trusted 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
Trusted Cloud console.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-07-02 UTC.
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