Example For Configuring Bfd For Ospf - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing

5.16.8 Example for Configuring BFD for OSPF

This section provides an example for configuring BFD for OSPF, including networking
requirements, configuration roadmap, configuration procedure, and configuration files.
Networking Requirements
OSPF enables the router to periodically send Hello packets to a neighboring router for fault
detection. Detecting a fault takes more than 1s. With the development of technologies, voice,
video, and other VOD services are widely used. These services are quite sensitive to packet loss
and delays. When traffic is transmitted at gigabit rates, long-time fault detection will cause packet
loss. This cannot meet high reliability requirements of the carrier-class network. BFD for OSPF
is used to resolve the problem. After BFD for OSPF is configured, the link status can be rapidly
detected and fault detection can be completed in milliseconds. This speeds up OSPF convergence
when the link status changes.
For example, as shown in
link Router A -> Router C -> Router B are deployed on the network. Traffic is transmitted on
the primary link normally. When the primary link becomes faulty, the Router is expected to
rapidly detect the fault and switch traffic to the secondary link.
You can configure BFD for OSPF to detect the OSPF neighbor relationship between Router A
and Router B. When the link between Router A and Router B fails, BFD can rapidly detect the
failure and report it to OSPF. Traffic is then switched to the secondary link.
Issue 02 (2014-09-30)
#
sysname RouterE
#
router id 5.5.5.5
#
multicast routing-enable
#
interface GigabitEthernet1/0/0
undo shutdown
ip address 10.0.3.2 255.255.255.0
pim sm
#
interface GigabitEthernet2/0/0
undo shutdown
ip address 192.168.3.1 255.255.255.0
pim sm
#
interface LoopBack0
ip address 5.5.5.5 255.255.255.255
pim sm
#
ospf 1
area 0.0.0.0
network 10.0.3.0 0.0.0.255
network 192.168.3.0 0.0.0.255
network 5.5.5.5 0.0.0.0
#
return
Figure
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5-13, the primary link Router A -> Router B and the secondary
5 OSPF Configuration
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