Configuring Dynamic BFD for IPv6 IS-IS

BFD provides link failure detection featuring light load and high speed (within milliseconds). With dynamic BFD, routing protocols can dynamically trigger the establishment of BFD sessions.

Usage Scenario

If the network requires zero packet loss and fast convergence when the link status changes, you can configure dynamic BFD on IS-IS links.

BFD needs to be configured based on the actual network environment. If the time parameters are set improperly, network flapping may occur.

Pre-configuration Tasks

Before configuring dynamic BFD for IPv6 IS-IS, complete the following tasks:

Configuring BFD Globally: Before configuring dynamic BFD for IS-IS, enable BFD globally.

Configuring BFD for an IS-IS IPv6 Process: By configuring BFD for an IPv6 IS-IS process, you can set parameters for dynamic BFD sessions and enable dynamic BFD for IPv6 IS-IS on all IPv6 IS-IS interfaces in the process.

(Optional) Preventing an IPv6 Interface from Dynamically Establishing BFD SessionS: This section describes how to disable an IS-IS IPv6 interface from dynamically establishing BFD sessions.

(Optional) Configuring BFD on a Specified IPv6 Interface: You can configure dynamic BFD session parameters for a specified IPv6 interface.

Verifying the Configuration: After configuring dynamic IPv6 BFD for IS-IS, check information about the BFD session and dynamic BFD for IS-IS on an interface.