The configurations of Switch B and Switch C are similar to the configuration of Switch A, and
are not mentioned here.
Step 2 Assign an IP address to each VLANIF interface.
[SwitchA] interface vlanif 10
[SwitchA-Vlanif10] ip address 1.1.1.1 24
[SwitchA-Vlanif10] quit
[SwitchA] interface vlanif 20
[SwitchA-Vlanif20] ip address 3.3.3.1 24
[SwitchA-Vlanif20] quit
The configurations of Switch B and Switch C are similar to the configuration of Switch A, and
are not mentioned here.
Step 3 Configure the basic OSPF functions. See Example for Configuring Basic OSPF Functions.
Step 4 Configure BFD for OSPF.
# Enable BFD globally on Switch A.
[SwitchA] bfd
[SwitchA-bfd] quit
[SwitchA] ospf
[SwitchA-ospf-1] bfd all-interfaces enable
[SwitchA-ospf-1] quit
# Enable BFD globally on Switch B.
[SwitchB] bfd
[SwitchB-bfd] quit
[SwitchB] ospf
[SwitchB-ospf-1] bfd all-interfaces enable
[SwitchB-ospf-1] quit
# Run the display ospf bfd session all command on Switch A or Switch B. You can see that the
BFD state is Up.
Take Switch A for example. The display is as follows:
[SwitchA] display ospf bfd session all
OSPF Process 1 with Router ID 1.1.1.1
Area 0.0.0.0 interface 3.3.3.1(Vlanif20)'s BFD Sessions
NeighborId:2.2.2.2 AreaId:0.0.0.0 Interface:Vlanif20
BFDState:up rx :1000 tx :1000
Multiplier:3 BFD Local Dis:8195 LocalIpAdd:3.3.3.1
RemoteIpAdd:3.3.3.2 Diagnostic Info:No diagnostic information
Area 0.0.0.0 interface 1.1.1.1(Vlanif10)'s BFD Sessions
NeighborId:3.3.3.3 AreaId:0.0.0.0 Interface:Vlanif10
BFDState:up rx :1000 tx :1000
Multiplier:3 BFD Local Dis:8194 LocalIpAdd1:1.1.1.1
RemoteIpAdd:1.1.1.2 Diagnostic Info:No diagnostic information
Step 5 Configure the BFD feature of interfaces.
# Configure BFD on VLANIF 20 of Switch A, set the minimum interval for sending the packets
and the minimum interval for receiving the packets to 100 ms, and set the local detection time
multiplier to 4.
[SwitchA] interface vlanif 20
[SwitchA-Vlanif20] ospf bfd enable
[SwitchA-Vlanif20] ospf bfd min-tx-interval 100 min-rx-interval 100 detect-
multiplier 4
[SwitchA-Vlanif20] quit
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.
181
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