4.9.2 Configuring BFD for OSPF in a Specified Process
Configuring BFD for OSPF in a specified process helps the system to rapidly detect the link
status and speeds up OSPF convergence in the case of a link failure.
Context
After BFD for OSPF is configured, when detecting a link fault, BFD rapidly notifies the
switches on both ends of the link of the fault, triggering rapid OSPF convergence. When the
OSPF neighbor relationship goes Down, the BFD session will be dynamically deleted.
Before configuring BFD for OSPF, enable BFD globally.
Perform the following steps on the switches between which a BFD session is to be created.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
bfd
BFD is globally configured.
Step 3 Run:
quit
Return to the system view.
Step 4 Run:
ospf [ process-id ]
The OSPF process view is displayed.
Step 5 Run:
bfd all-interfaces enable
BFD for OSPF is configured. The default parameter values are used to create a BFD session.
If all the interfaces in a certain process are configured with BFD and their neighbor relationships
are in the Full state, OSPF creates BFD sessions with default parameter values on all the
interfaces in the process.
Step 6 (Optional) Run:
bfd all-interfaces { min-rx-interval receive-interval | min-tx-interval transmit-
interval | detect-multiplier multiplier-value | frr-binding }
*
BFD session parameters are modified.
You can skip this step. The default interval at which BFD packets are transmitted and the default
detection multiplier are recommended.
The parameters are configured based on the network status and network reliability requirements.
A short interval at which BFD packets are transmitted can be configured for a link that has a
higher requirement for reliability. A long interval at which BFD packets are transmitted can be
configured for a link that has a lower requirement for reliability.
S6700 Series Ethernet Switches
Configuration Guide - IP Routing 4 OSPF Configuration
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
122
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