Example For Configuring Association Between Bfd And Ethernet Interface Backup In Active/Standby Mode - Huawei AR530 Series Configuration Manual

Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Reliability
2.7.5 Example for Configuring Association Between BFD and
Ethernet Interface Backup in Active/Standby Mode
Networking Requirements
As shown in
RouterA->RouterC->RouterD is the backup link.
Devices are required to monitor the primary link status within 50 ms. When the primary link is
faulty, the backup link is started to transmit services to reduce the impact of the primary link
fault on service transmission.
Figure 2-15 Networking of association between interface backup and BFD
HostA
192.168.1.1/24
Configuration Roadmap
The configuration roadmap is as follows:
1.
2.
3.
4.
Configuration Procedure
1.
Issue 01 (2014-11-30)
Figure 2-15, the link RouterA->RouterB->RouterD is the primary link and the link
GE1/0/0
10.1.2.1/24
RouterA
GE2/0/0
10.1.3.1/24
Configure an IP address for each interface and a static route to ensure connectivity at the
network layer.
Configure a BFD session on RouterA and RouterD to monitor the primary link status.
Configure association between interface backup and BFD on backup interface GE2/0/0 of
RouterA. When the BFD session detects a fault on the primary link, traffic can be rapidly
switched to the backup interface.
Configure association between interface backup and BFD on GE2/0/0 of the RouterD.
When the BFD session detects the primary link fault, traffic can be rapidly switched to the
backup link. This ensures that traffic sent from RouterA to RouterD and traffic sent from
RouterD to RouterA use the same route.
Configure connectivity at the network layer.
# Assign an IP address to each interface. Use RouterA as an example.
<Huawei> system-view
[Huawei] sysname RouterA
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
GE1/0/0 GE2/0/0
10.1.2.2/24 10.1.4.1/24
RouterB
RouterC
GE1/0/0 GE2/0/0
10.1.3.2/24 10.1.5.1/24
2 Interface Backup Configuration
GE1/0/0
10.1.4.2/24
RouterD
GE2/0/0
10.1.5.2/24
192.168.2.1/24
HostB
Primary link
Backup link
BFD packets
35