Resiliency Enhancement for IPv4 and IPV6 Static Routes

The ExtremeXOS Resiliency Enhancement feature provides a resilient way to use Equal-Cost Multi-Path (ECMP) to load balance IPv4 traffic among multiple servers or other specialized devices. ExtremeXOS automatically manages the set of active devices using ECMP static routes configured with ping protection to monitor the health of these routes. Such servers or specialized devices do not require special software to support Bidirectional Forwarding Detection (BFD), or IP routing protocols such as OSPF, or proprietary protocols to provide keepalive messages. ExtremeXOS uses industry-standard and required protocols ICMP/ARP for IPv4 to accomplish the following automatically:

• Initially verify devices and activate their static routes, without waiting for inbound user traffic, and without requiring configuration of device MAC addresses.
• Detect silent device outages and inactivate corresponding static routes.
• Reactivate static routes after device recovery, or hardware replacement with a new MAC address.