Configuring IPv6 Static Route Detection

Usage Scenario

Unlike dynamic routes, static routes do not have a detection mechanism. As a result, administrator intervention is required if a fault occurs on the network. To prevent the need for administrator intervention, deploy IPv6 static route detection to implement automatic rapid link switchover if a link failure occurs. IPv6 static route detection prevents lengthy service interruptions.

The following IPv6 static route detection methods are available:

• BFD for IPv6 static routes: After BFD for IPv6 static routes is configured, each static route can be bound to a BFD session. BFD for IPv6 static routes implements millisecond-level detection. BFD is classified as static BFD or dynamic BFD.
• Network quality analysis (NQA) for IPv6 static routes: Although BFD for IPv6 static routes implements fast link fault detection, it cannot be deployed in some scenarios (when Layer 2 devices exist on the network, for example) because both ends of the link must support BFD. NQA for IPv6 static routes, however, can monitor the link status of a static route even when only one end supports NQA. NQA for IPv6 static routes implements second-level detection.
  

  Only one of the IPv6 static route detection methods can be deployed. Therefore, choose one based on the live network requirements.

Pre-configuration Tasks

Before configuring IPv6 static route detection, configure link-layer protocol parameters and IPv6 addresses for interfaces to ensure that the link layer protocol of each interface is Up.