What is a Spoke Gateway?
It is a software appliance that is part of Aviatrix secure cloud networking control and d data plane working as a tunnel between networks.
As of today, Aviatrix software version 6.8 does not support scale groups or scale sets.
The Controller monitors the spoke gateways, detects problems, and handles fail-over automatically. There are two options to choose from:
- High Availability Peering: it provides a recovery time of ~30 seconds using a second gateway to form an HA pair.
- Single AZ: The recovery time for this option is approximately 4-5 minutes. As the name suggests, a second gateway is not deployed.
Those times can be tuned and they depend on the CSP as well.
The gateway sends periodic keep-alive messages to the Controller:
A gateway is considered in healthy state if controller receives at least 2 messages between two consecutive health checks.
There are three speeds:
- fast: gateway sends keep-alive every 3 seconds and controller checks health every 7 seconds. This option provides a detection time of 14 seconds.
- medium: gateway sends keep-alive every 12 seconds and controller checks health every 60 seconds. This option provides a detection time of 120 seconds.
- slow: gateway sends keep-alive every 60 seconds and controller checks health every 300 seconds. This option provides a detection time of 600 seconds.
I’m testing the Single AZ shutting down the gateway from the portal:
In this simple test 53 pings were lost.