H3C Technologies H3C S12500 Series Switches - Manual (Page 213)

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Associating Track with BFD
IMPORTANT:
When associating Track with BFD, do not configure the virtual IP address of a VRRP group as the local or
remote address of a BFD session.
BFD supports the control packet mode and echo mode. Only echo-mode BFD can be associated with a
track entry.
After being associated with a track entry, the BFD informs the track entry of link failures, and then the
Track module sets the track entry to the Negative state. If the BFD detects the link is normal, the Track
module sets the track entry to the Positive state. For more information about BFD, see "Configuring BFD."
Configuration prerequisites
Before you associate Track with BFD, configure the source address of the BFD echo packets.
Configuration procedure
To associate Track with BFD:
Step Command Remarks
1. Enter system view. system-view N/A
2. Create a track entry,
associate it with the BFD
session, and specify the delay
time for the Track module to
notify the associated
application module when the
track entry status changes.
track track-entry-number bfd echo interface
interface-type interface-number remote ip
remote-ip local ip local-ip [ delay { negative
negative-time | positive positive-time } * ]
No track entry is created
by default.
Associating Track with interface management
The interface management module monitors the physical status or network-layer protocol status of the
interface. After being associated with a track entry, when the physical or network-layer protocol status of
the interface changes to up, the interface management module informs the Track module of the change
and the Track module sets the track entry to Positive. When the physical or network-layer protocol status
of the interface changes to down, the interface management module informs the Track module of the
change and the Track module sets the track entry to Negative.
To associate Track with interface management:
Step Command Remarks
1. Enter system view. system-view N/A