The following table describes potential failure scenarios that can occur on Cloud Interconnect and how they can affect you. The failure scenarios described assume that you follow Best practices for Cloud Interconnect.
| Failure type and description | Worst case scenario | Best case scenario |
|---|---|---|
| Link failure
A physical link failure between the Google edge router and your on-premises router. |
You experience a minor service interruption with an estimated duration of several minutes. | Traffic is disrupted for several seconds with alternate paths available for traffic. |
|
Google edge router failure
A device failure that affects the connection between Cloud Router and your on-premises router. |
You experience a minor service interruption with an estimated duration of several minutes. | Traffic is disrupted for several seconds with alternate paths available for traffic. |
|
Cloud Router failure
Typically a Cloud Router maintenance event that usually takes less than 60 seconds. |
No impact expected with graceful restart enabled. | No impact expected with graceful restart enabled. For more information about graceful restart, see Graceful restart and BFD |
|
On-premises router control plane failure
Your on-premises router experiences a control plane failure. |
A brief service interruption with an estimated duration of several minutes. | A short pause in service. |
Next steps
- Implement Cloud Interconnect Best practices.