Configuring The Association Between Bfd Status And Interface Status - Huawei NetEngine80E Configuration Manual - Reliability

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
Applicable Environment
When a transport device exists on the link and a fault occurs on a link, the routers on both ends
of the link need a long time to detect the fault. This is because although the two routers are
directly connected, the actual physical path is segmented by the transport device.
Figure 5-3 Networking diagram of devices between the both end routers
RouterA
To solve the problem, the NE80E/40E implements the association between BFD status and
interface status. The change of the BFD session status affects the protocol status of the interface.
Fast convergence of routes is thus triggered.
After the association between BFD status and interface status is configured, the BFD session
becomes Down when it detects a fault, and the corresponding interface status becomes
BFD_Down. When the interface is BFD_Down, the direct route of this interface is deleted from
the routing table; however, the forwarding of BFD packets is not affected.
Pre-configuration Tasks
Before configuring the association between BFD status and interface status, you need to
complete the task of
Data Preparation
To configure the association between BFD status and interface status, you need the following
data.
No.
1
5.4.2 Configuring the Association Between BFD Status and
Interface Status
By being associated with the interface status, a BFD session can affect the interface protocol
status after the BFD session status changes, which triggers fast route convergence.
Issue 02 (2011-09-10)
5.2 Configuring Single-hop
NOTE
Only the one-hop BFD session to which the default multicast IP address is bound can implement the
association between BFD status and interface status. You can run the
ip interface interface-type interface-number [ source-ip source-ip ] command to set up a BFD session.
Data
BFD configuration name
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RouterB
BFD.
bfd cfg-name bind peer-ip default-
5 BFD Configuration
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