Before you can use your Cross-Site Interconnect connections, Google must verify that your connections to Google's edge network are working. To do this, Google sends you an IP address configuration that you must apply to your on-premises routers.
The test described on this page helps you ensure that your connection is successfully installed and connects the Cross-Site Interconnect port to your on-premises router port.
For definitions of terms used on this page, see Cloud Interconnect key terms.
To help you solve common issues that you might encounter when using Cross-Site Interconnect, see Troubleshooting.
Test a connection
- Google polls its edge device every 24 hours, checking for light on the port to your on-premises router. Receiving light indicates that your connection is installed. After detecting this light, Google sends you an email containing a link-local IP address that Google uses to ping your on-premises router to test the circuit.
Configure the interface of your on-premises router with the correct link-local IP address.
The following example shows an IP address configuration similar to the one that Google sends you for the test. Replace these values with the values that Google sends you for your network.
Google's link-local IP address Your router's link-local IP address Subnet size 169.254.0.1 169.254.0.2 /30 Apply the test IP address that Google sends you to the interface of your on-premises router that connects to Google. For testing, you must configure this interface in access mode with no VLAN tagging.
Google tests your connection by pinging the link-local IP address. Google tests once, 30 minutes after detecting light, and then every 1 hour thereafter.
- After a successful test, Google sends you an email notifying you that your connection is ready to use.
- If a test fails, Google automatically retests the connection once an hour for 30 days.
To fix issues, see the guidance for single-link bundles in Troubleshooting.
Use your Cross-Site Interconnect connection
After all tests have passed, your Cross-Site Interconnect connection is ready to use, and Google starts billing for it. To view the status of your connection, see View connection details.
At this stage, remove the test IP addresses from the interface or interfaces on your on-premises routers. To reconfigure your router for production, see Configure on-premises routers.
Your connection can now carry traffic, and you can create your cross-site networks.