Configuring Bfd Support For Is-Is - Cisco Catalyst 9500 series Configuration Manual

How to Configure Bidirectional Forwarding Detection
Step 5
Step 6
Step 7

Configuring BFD Support for IS-IS

This section describes the procedures for configuring BFD support for IS-IS so that IS-IS is a registered
protocol with BFD and will receive forwarding path detection failure messages from BFD. There are two
methods for enabling BFD support for IS-IS:
• You can enable BFD for all of the interfaces on which IS-IS is supporting IPv4 routing by using the bfd
all-interfaces command in router configuration mode. You can then disable BFD for one or more of
those interfaces using the isis bfd disable command in interface configuration mode.
• You can enable BFD for a subset of the interfaces for which IS-IS is routing by using the isis bfd
command in interface configuration mode.
To configure BFD support for IS-IS, perform the steps in one of the following sections:
Prerequisites
IS-IS must be running on all participating routers.
The baseline parameters for BFD sessions on the interfaces that you want to run BFD sessions to BFD neighbors
over must be configured. See the Configuring BFD Session Parameters on the Interface section for more
information.
Note Output from the show bfd neighbors details command shows the configured intervals. The output does
not show intervals that were changed because hardware-offloaded BFD sessions were configured with
Tx and Rx intervals that are not multiples of 50 ms.
Routing Configuration Guide, Cisco IOS XE Everest 16.6.x (Catalyst 9500 Switches)
10
Command or Action
end
Example:
Device(config-router) end
show bfd neighbors [details]
Example:
Device# show bfd neighbors details
show ip eigrp interfaces [type number]
[as-number] [detail]
Example:
Device# show ip eigrp interfaces
detail
Configuring Bidirectional Forwarding Detection
Purpose
Exits router configuration mode and returns the
router to privileged EXEC mode.
(Optional) Verifies that the BFD neighbor is active
and displays the routing protocols that BFD has
registered.
(Optional) Displays the interfaces for which BFD
support for EIGRP has been enabled.